Dr. Dimitar S. Stoychev
Institute of Physical Chemistry

Bulgarian Academy of Sciences

tel:
(+359 2) 979-2529

CV  
Dr. Dimitar S. Stoychev is a Professor at the Institute of Physical Chemistry - Bulgarian Academy of Sciences – Head of Electrocrystallization and Functional Galvanic Coatings Lab. He was born in the town of Rila, Bulgaria where he attended the polytechnic high school. Then he graduated from the St.Petersburg Institute of Technology (Russia) in 1969, receiving diploma in electrochemical engineering (MS degree). In the same year he joined the Institute of Physical Chemistry at the Bulgarian Academy of Sciences in Sofia. He got his Ph.D. degree in 1980 from IPC BAS with a thesis entitled "On the Electrochemical Deposition of Copper Coatings from Sulphuric-Acid Electrolytes in the Presence of Brightener Agents”. In 2000 he received his D.Sc. degree from IPC-BAS on the base of doctoral dissertation entitled “Immersion Treatment of Aluminum and Electrodeposition of Copper Coatings with Definite Properties”.

In 1972 he specialized for three months in the Institute of Chemistry and Chemical Technology of Professor Yu. Matulis at the Lithuanian Academy of Sciences in Vilnius, Lithuania. In the early years of his research work, he was a essential member of the collaborating team of the Institute of Physical Chemistry and the Institute of Organic Chemistry of BAS in the development of high effective technologies for electrodeposition of bright, high leveled, free of internal stress and ductile copper coatings used in the automobile and electronic   industries. As a result of these investigation efforts a number of patents were claimed, which were applied successfully in the industry. They were used in the production of more than 1,5 mil cars per year and more than 200 000 square meters of printed circuit boards per year for almost two decades in a several European countries. In this period he visited Scientific institutes, High tech companies and Factories in these countries, where he gave lectures and presented these scientific achievements.
Latter he broadened the scope of his scientific interests in the area of  electrodeposition of:  bright copper layers with heightened microhardness and wearresistance (the developed technology for production of cylinders for intaglio printing has been introduced and used for more than ten years in the U.K.);  multilayer protective-decorative and functional metal and oxide systems on Al and its alloys; as well as in the field of electrodeposition of oxide and metal layers of rear earth and tungsten metals for catalytic and protective applications. In the period 1998-2002 he is one of the main researcher in two projects financed by the EU (in collaboration with the Universities in Sevilla, Spain and Lyon and Montpellier, France) and NATO (in collaboration with Aristotle’s University, Thessalonica, Greece), where he was visiting scientist. Subject of interest are creation and characterization of oxide layers of Zr, Ce, La, Al and their mixes on stainless steel substrates, as well as the influence of the size of the crystallites of electrodeposited thin layers of  Pt, Au, Cu, Co and Ni on their catalytic activity.

The research interests of D.Stoychev include the electrodeposition (initial and advanced stages of electrocrystallization) of metals and oxide layers, their structure and properties, corrosion resistance, methods for chemical and electrochemical passivation and protection of metal surfaces using environment-friendly chemical solutions, protective-decorative and functional composite coatings. He has authored and coauthored more than 150 papers and reports and he is holder of more than 25 patents. He is Head of Laboratory “Electrocrystallization and Functional Galvanic Coatings”. He is a co-recipient (with his collaborator Assoc.Professor Dr.M.Aroyo and Dr.N.Tzonev) of the ABNER BRENNER AWARD WITH GOLD MEDAL of the American Electroplaters and Surface Finishers Society and of the International Technical/Educational Society for Surface Finishing for the best paper published in “PLATING AND SURFACE FINISHING “during the year 1998. He taught graduate courses in “Chemistry of constructive and exploitation materials” at the Technical University of Sofia during 15 years and has (with co-authors) a Textbook on this coarse. He has number of graduated and PhD students.
List of selected publications  


Electrodeposition of Oxide Layers on Stainless Steels

"Effects of organic additives on alumina coatings on stainless steel obtained by spray pyrolysis"
N.Radic, B.Grbic, L.Rozic, T.Novakovic, S.Petrovic, D.Stoychev, P.Stefanov
J. Non-Crystalline Solids, DOI: 10.1016/j.jnoncrysol.2011.07.006

“Corrosion stability of stainless steel, modified electrochemically with Ce2O3–CeO2 films, in 3.5% NaCl media”
D. Guergova, E. Stoyanova, D. Stoychev, I. Avramova, G. Atanasova, P. Stefanov
Bulgarian Chemical Communications, 43 (1), 155-162 (2011)

“A Study of the Kinetics of the Electrochemical Deposition of Ce3+/Ce4+ oxides”
I.Valov, D.Guergova, D.Stoychev
“Nanotechnological Bases for Advanced Sensors”, NATO Science for Peace and Security Series-B: Physics and Biophysics, Chapter No17, pp.167-172, Eds. J.Reithmaier, P.Paunovic, W.Kulisch, Published by Springer, The Netherlands (2011), Library of Congress Control Number: 2011926454; ISBN 978-94-007-0905-8 (PB), DOI 10.1007/978-94-007-0903-4

“Passivity of OC404 steel modified electrochemically with Ce2O3-CeO2 oxide layers in sulphuric acid media”
E.Stoyanova, D.Guergova, D.Stoychev, I.Avramova, P.Stefanov
Electrochim. Acta”, 55(5), 1725-1732 (2010)
 « Protective effet in sulphuric acide media of alumina and ceria oxide layers electrodeposited on stainless steel « 
D.Nickolova, E. Stoyanova, D. Stoychev, I.Avramova, P. Stefanov
Surface & Coatings Technology, 202, 1876-1888 (2008).

“The thermal stability of porous alumina/stainless steel catalyst support obtained by spray pyrolysis”
T.Novakovic, N.Radic, B.Grbic, V.Donodur, M.Mitric, D.Randjelovic, D.Stoychev, P.Stefanov
Appl.Surf.Sci., 255, 3049-3055 (2008)

“Influence of Calcination of SS OC 4004 with Alumina or Ceria Layers on Their Passive State in Different Acid Media”
D. Guergova, E. Stoyanova, D. Stoychev, G.Atanasova, I.Avramova, P. Stefanov
Bulgarian  Chemical Communications, 40(3), 227-232 (2008)

“Preparation of ZrO2 and Al2O3 thin films on stainless steel by spray pyrolysis”
T.Novakovic, N.Radic, B.Grbic, D.Stoychev, P.Stefanov, T.Marinova
Materials Science Forum, 555, 321-326 (2007)

“Characterization of thin CeO2-ZrO2-Y2O3 films electrochemical deposited on stainless steel “
I.Avramova, D. Stoychev and Ts. Marinova
Appl.Surf.Sci., 253, 1365-1370 (2006)

“Effect of Al and Ce oxide layers electrodeposited on OC4004 stainless steel on it’s corrosion characteristics in acid media”
E. Stoyanova D. Nikolova, , D. Stoychev, P. Stefanov, Ts. Marinova
Corrosion Sci., 48(12), 4037-4052 (2006)

“Characterisation of Mixed Yttria and Zirconia Thin Films”,
Ts. Marinova, A. Tsanev and D. Stoychev
 Mater. Sci. Eng: B, 130 (1-3), 1-4 (2006)

“Anode behaviour of stainless steel covered with an electrochemically deposited Ce2O3 – CeO2 film”
D. Nikolova, E. Stoyanova, D. Stoychev, P. Stefanov and Ts. Marinova
Surface and Coatings Technology, 201, 1559-1567 (2006)

“Characterization and catalytic activity of Cu-Co spinel thin film catalysts”
P. Stefanov, I. Avramova, D. Stoychev, N. Radic, B. Grbic, Ts. Marinova  
Appl. Surf. Sci. 245, 65 – 72(2005)

“Influence of manganese oxide on the activity of Pt/Al2O3 catalysts for CO and n-hexane oxidation”
B. Grbić, N. Radić, P. Stefanov, D. Stoychev, Ts. Marinova
Applied Catalysis B: Environmental, 64, 51-56 (2005)

“Application of electrochemically deposited alumina films as catalyst support”
P. Stefanov, A. Mihaylova, D. Stoychev, B. Grbić, N. Radić, Ts. Marinova
Compt. Rend. Acad. Bulg. Sci., 58 (No10), 1183-1186 (2005)

“Characterization of nanocomposite CeO2-Al2O3 coatings electrodeposited on stainless steel”
I. Avramova, P. Stefanov, D. Nicolova, D. Stoychev, Ts. Marinova
Composites Science and Technology, 65, 1663-1667 (2005)

“Characterization and reactivity of Pt/Al2O3/SS thin films”
A.Michaylova, A.Tsanev, P.Stefanov, D.Stoychev, Ts.Marinova
React.Kinet.Catal.Lett., 84 (No1), 121-127 (2005)

“Compositional and structural characterization of alumina coatings deposited electrochemically on stainless steel”
P.Stefanov, D.Stoychev, A.Aleksandrova, D.Nikolova, G.Atanasova, Ts.Marinova
Appl. Surf. Sci., 235, 80-85 (2004)

“Electrochemical deposition of CeO2 on ZrO2 and Al2O3 thin films formed on stainless steel”
P.Stefanov, G.Atanasova, D.Stoychev, Ts.Marinova
Surface and Coatings Technology, 180-181, 446-449 (2004)

“Preparation of Al2O3 thin films on stainless steel by electrochemical deposition”
D.Stoychev, P.Stefanov, D.Nikolova, A.Aleksandrova, G.Atanasova, Ts.Marinova
Surface and Coatings Technology, 180-181, 441-445 (2004)

“Electrochemical growth of thin La2O3 films on oxide and metal surfaces”
D. Stoychev, I. Valov, P. Stefanov, G. Atanasova, M. Stoycheva, Ts. Marinova,
Materials Science and Engineering C, 23, 123-128 (2003)

“Thin-film coating Cu-Co oxide catalyst on lantana/zirconia films electrodeposited on stainless steel”
G.Tyuliev, D.Panayotov, I.Avramova, D.Stoychev, Ts.Marinova
Mater.Sci.Eng.C, 23/1-2, 117-121 (2002)

“Chemical Composition and Corrosion Resistance of Passive Chromate Films Formed on Stainless Steeles 616L and 1,4301”
D.Stoychev, P.Stefanov, D.Nikolova, I.Valov, Ts.Marinova
Mater.Chem.Phys., 73, 252-258 (2002) 

“Study of the kinetics of processes during electrochemical deposition of zirconia from nonaqueous electrolytes”
I.Valov, D.Stoychev, Ts.Marinova
Electrochimica Acta, 47, No28, 4419-4431 (2002)
 
“Investigation of the structure, content and anodic behaviour of electrochemically formed oxide layers on stainless steel 316 L”
D.Stoychev
Acta Mechanica Slovaca, 6, No2, 155-160 (2002)
 
“Characterisation of the Structure and Composition of Stainless Steel 316L after Electrochemical Roughening”
D.Stoychev, P.Stefanov, M.Stoycheva, D.Nikolova, Ts.Marinova
Trans.Inst.Metal Finishing (England), 78, No2, 67-70 (2000)

“Additional oxidation and decorative roughening of stainless steel”
D.Stoychev
Acta Mechanica Slovaca, 3, No3, 165-168 (2000)

”Electrochemical Deposition of Thin Zirconia Films on Stainless Steel 316 L”
P.Stefanov, D.Stoychev, I.Valov, A.Kakanakova-Georgieva, Ts.Marinova
Mater.Chem.Phys., 65, 222-225 (2000)

“Chromium Oxide Eilms Chemically Formed on Stainless Steel 316L”
P.Stefanov, D.Stoychev, M.Stoycheva, Ts.Marinova
Mater.Chem.Phys., 65, 212-215 (2000)

”Surface Modification of Porous Zirconia Layers by Electrochemical Deposition of Small Amounts of Cu, Co and Co+Cu”
D.Stoychev, J.Ikonomov, K.Robinson, M.Stoycheva, Ts.Marinova
Surface and Interface Analysis, 30, 69-73 (2000)

”XPS and SEM Characterisation of Zirconia Thin Films Prepared by Electrochemical Deposition”
P.Stefanov, D.Stoychev, M.Stoycheva, J.Ikonomov, Ts.Marinova
Surface and Interface Analysis , 30, 628-631 (2000)

“XPS and SEM characterization of electrodeposited transition metals on zirconia”
J.Ikonomov, D.Stoychev, Ts.Marinova
Appl.Surf.Sci., 161, 94-104 (2000)

“XPS, SEM and EM Characterisation of Stainless Steel 316 L Surfaces after Electrochemical Etching and Oxidizing”
P. Stefanov, D. Stoychev, M. Stoycheva, A. R. Gonzalez-Elipe and Ts. Marinova,  
Surf. Int. Anal., 28, 106-110 (1999)

 

Catalytic and electrocatalytic activity of electrodeposited functional layers

“ Catalytic activity of Pt catalysts promoted by MnOx for n-hexane oxidation”
M.Anić, N. Radić, B. Grbić, V. Dondur, L. Damjanović , D.Stoychev, P. Stefanov
Applied Catalysis B: Environmental, DOI: 10.1016/apcatb.2011.07.032

“Preparation and Characterization of Al2O3 Thin Films for Catalytic
Activity Studies”
G. Atanasova, D. Guergova, D. Stoychev, N.Radic, B. Grbic, P. Stefanov
Solid State Phenomena, 15991-96 (2010)

“Preparation and Characterization of Catalytic Thin Films for Exhaust
Emission Control”
G. Atanasova, D. Guergova, D. Stoychev, A. Naydenov, P. Stefanov
Reaction Kinetics, Mechanisms and Catalysis, 101, 397-406 (2010)

“Electrocatalytical activity of electrodeposited Zr-Ce-Y/Ni and Co/Zr-Ce-Y/Ni oxide systems at evolution of hydrogen and oxygen”
A.Tsanev, P.Iliev, K.Petrov, P.Stefanov, D.Stoychev
Bulgarian Chemical Communications, 40(3), 348-354 (2008).

“Electrocatalysts for bifunctional oxygen/air electrodes”
V.Nikolova, P.Iliev, K.Petrov, T.Vitanov, E.Zhecheva, R.Stoyanova, I.Valov, D.Stoychev
Journal of Power Sources, 185(2), 727-733 (2008)

“Electrocatalysts and electrode design for bifunctional oxygen/air electrodes”
V.Nikolova, P.Iliev, K.Petrov, T.Vitanov, E.Zhecheva, R.Stoyanova, I.Valov, D.Stoychev
NATO Science for Peace and Security Series-B: Physics and Biophysiscs, pp.305-310 (2008) Eds. E.Vaseashta, I.N.Mihailescu, Published by Springer, The Netherlands (2008)

“Oxidation of n-hexane over Pt and Cu-Co oxide catalysts supported on a thin-film zirconia/stainless steel carrier”
T.Novakovic, B.Grbic, N.Radic, B.Grbic, B. Markovic, T.Marinova, P.Stefanov, D.Stoychev
Catalysis Communications, 9(6), 1111-1118 (2008)

“Characterization and catalytic activity of Cu-Co spinel thin film catalysts”
P. Stefanov, I. Avramova, D. Stoychev, N. Radic, B. Grbic, Ts. Marinova  
Appl. Surf. Sci. 245, 65 – 72(2005)

“Influence of manganese oxide on the activity of Pt/Al2O3 catalysts for CO and n-hexane oxidation”
B. Grbić, N. Radić, P. Stefanov, D. Stoychev, Ts. Marinova
Applied Catalysis B: Environmental, 64, 51-56 (2005)

“Application of electrochemically deposited alumina films as catalyst support”
P. Stefanov, A. Mihaylova, D. Stoychev, B. Grbić, N. Radić, Ts. Marinova
Compt. Rend. Acad. Bulg. Sci., 58 (No10), 1183-1186 (2005)

“Characterization and reactivity of Pt/Al2O3/SS thin films”
A.Michaylova, A.Tsanev, P.Stefanov, D.Stoychev, Ts.Marinova
React.Kinet.Catal.Lett., 84 (No1), 121-127 (2005)

 

Electrodeposition of Metal Coatings in the Presence of Surfactants – Kinetics, Adsorption, Complexformation  

“Protective coatings of zinc and zinc alloys for industrial applications”
Y.Toshev, V.Mandova, N.Boshkov, D.Stoychev, P.Petrov, N.Tsvetkova, G.Raychevski, A.Gabev,      R.Velev, K.Kostadinov
Book of Second Inernat.Conference on Multi-material Micromanifactures, pp.323-326, Eds. W.Menz, B.Fillon, Elsevier Ltd.Publ. (2006), Minatec, European Centre for Micro and Nanotechnology, Grenoble, France., doi:10.1016/B978-008045263-0/50073-8
 

“Method for determination of the kinetics parameters in electrolytes containing surface-active substances, accounting for the influence of electrode potential on the changes of the free electrode surface”
V.Lazarov, D.Stoychev
Electroanalysis, 16, No3, 211-216 (2004)

“Влияние полиэтиленгликоля на кинетику электроосаждения меди из кислых сульфатных электролитов и физико-механические свойства осадков”(Review)
Ю.Д.Гамбург, Д.Стойчев, Н.Петкова
Коррозия: материалы, защита  (Рoссия), 2, No5, 40-48 (2004)

“Determination of kinetic parameters and the mechanism of electrodeposition of copper from sulphuric acid electrolytes in the presence/absence of surface-active substances”
V.Zh.Lazarov, D.S.Stoychev
Bulg.Chem.Commun., 35, No1, 65-73 (2003)

”Einflus Einiger Zusatze auf die elektrolytische Abscheidung von Messinguberzugen aus Athylendiaminelektrolyten”
S.Vitkova, V.Ivanova, D.Stoychev
Galvanotechnik , 90, No 2, 351-358 (1999)

”Electrodeposition of Brass from Ethylendiamine Electrolyte”
S.Vitkova, V.Ivanova, D.Stoychev
Compt.Rend.Acad.Bulg.Sci., 51, No 3-4, 43-46 (1998)

“Electrostatic Behaviour of Polyethylene Oxide”
I.Zhivkova, A.Zhivkov, D.Stoychev
European Polymer Journal, 34, No 3/4, 531-538 (1998)

“On the Role of Poly(Ethylene Glycol) in Deposition of Galvanic Copper Coatings” (Review)
D.Stoychev
Trans.Inst.Metal Finishing (England), 76, No2, 73-80 (1998)

“Electrophoretic Mobilityof Aluminium Oxide Particles in the Presence of Polyethylene Oxide”
I.Zivkova, A.Zhivkov, D.Stoychev
Compt. rend.Acad.bulg.Sci., 50, No 6, 71-74 (1997)
 
“Behaviour of Poly (Ethylen glycol) During Electrodeposition of Bright Copper Coatings in Sulphuric Acid Electrolytes”
D.Stoychev, Chr.Tsvetanov
J.Appl.Electrochem., 26, 741-749 (1996)

“Viscosimetric Study of High Molecular Weight Polyethylene Oxide”
I.Zivkova, A.Zhivkov, D.Stoychev
J.Mater.Sci.Lett., 15, 2115-2117 (1996)

”An Improwed Method for Kinetics Investigations of Electrochemical Reactions with Gas Evolution”
D.Popov, E.Stoyanova, D.Stoychev
J.Appl. Electrochem., 23, 760-763 (1993)

“The Influence of Some Derivatives of Dialyl- and Diaryldisulphides on Electrode Processes during Electrodeposition of Copper”
D.Stoychev, I.Vitanova, R.Boukliev, N.Petkova, I.Popova, I.Pojarliev
J.Appl.Electrochem., 22, 978-986 (1992)

“On the Mechanism of the Brightening and Levelling Effect of Some Additives During the Electrolytic Deposition of Copper Coatings from Sulphuric Acid Electrolytes” (Review)
S.Rashkov, D.Stoychev, L.Mirkova, I.Vitanova, T.Vitanov, Chr.Nanev
Commun.Dep.Chem., Bulg.Acad.Sci., 18, N2, 157-180 (1985)
 
“Эëåêòðîëèò äëÿ ìåäíåíèÿ öèëèíäðîâ ãëóáîêîé ïå÷àòè”
Ä.Ñòîé÷åâ, È.Âèòàíîâà, È.Ïîæàðëèåâ, Ñ.Ðàøêîâ
Ïîëèãðàôèÿ (Russia), 9, 39-40 (1984)

”Òechnologie vylucovani lesklich medenich povlaku z kisele lazne B-72-11”
D.Stoychev, L.Mirkova, Cv.Dobrev
Chemicky prumisl (CSSR), roc.30/55, 7, 334-339 (1980)

“Herstelung und Struktur Glancender Kupferuberzuge aus Schwefelsaueren Elektrolyten”
S.Rashkov, D.Stoychev
Galvanotechnik (BRD), 71, N3, 225-230 (1980)

“The Relation Between the Adsorption of Surface-Active Additives and the Brightness of Electrolytically Deposited Copper Coatings”
D.S.Stoychev, I.B.Vitanova, T.Vitanov, S.Rashkov
Surf. Technology, 10, N3, 209-217 (1980)

“Adsorption  Behaviour of Some Brightening Agents Used in Electrolytic  Copper Deposition from Acid Solutions”
D.S.Stoychev, I.B.Vitanova, T.D.Vitanov, S.Rashkov
Compt. Rand. Acad. Bulg. Sci., 32, N11, 1515-1518 (1979)

“Determination of the Size of the Crystallites Building Up Bright Galvanic Copper Coatings”
D.Stoychev, I.Tomov, I.Vitanova, S.Rashkov
Surface Technology, 7, N6, 433-441 (1978)

“Adsorption of Substances Acting as Brightners in Electrolytic Deposition of Copper”
D.S.Stoychev, I.B.Vitanova, S.Rashkov, T.Vitanov
Surface Technology, 7, N6, 427-432 (1978)

"Uber die Elektrolytische Abscheidung, das Wachstum und die Struktur von Kupferuberzugen aus saueren Elektrolyt"
S.Rashkov,  D.Stoychev
Surface Technology, 7, N6, 155-177 (1978)

"Effect of Some Addends on the Electrolytic Deposition and Structure of Copper Coatings from Acid Solutions"
D.S.Stoychev, S.Rashkov
Compt.Rand.Acad.Bulg.Sci., 26, N2, 243-246 (1973)

”Influence of Current Density and Temperature on the Morphology and Preferred Orientation of Electrodeposited Copper Coatings”
S.Rashkov, D.Stoychev, I.Tomov
Electrochim.Acta, 17, 1955-1964 (1972)

 

Initial Stages of Electrocrystallization and Electrocatalysis

“Electrocrystallisation of metal catalysts: nucleation and growth of platinum on a titanium electrode”
A.Milchev, D.Stoychev, V.Lazarov, A.Papoutsis, G.Kokkinidis
J.Crystal Growth, 226, 138-147 (2001)

“Electroless deposition of Pt on Ti. Part II. Catalitic activity for oxygen reduction”
G.Kokkinidis, D.Stoychev, V.Lazarov, A.Papoutsis, A.Milchev
J.Electroanal.Chem., 511 (1-2), 20-30 (2001)

 “Electrochemical nucleation and growth of rhodium on gold substrates”
 M.Arbib, B.Zhang, V.Lazarov, D.Stoychev, A.Milchev, C.Buess-Herman
J.Electroanal.Chem., 510, 67-77 (2001)

“Electrodeposition of Platinum on Metallic and Non-metallic Substrates - Selection of Experimental Conditions”
D.Stoychev, A.Papoutsis, A.Kelaidopoulou, G.Kokkinidis, A.Milchev
Mater.Chem.Phys., 72, 360-365 (2001)

 “Electroless deposition of Pt on Ti - catalitic activity for the hydrogen evolution reaction”
G.Kokkinidis, A.Papoutsis, D.Stoychev, A.Milchev
J.Electroanalyt.Chem., 486, No1, 48-55 (2000)

“Galvanostatic Studies of the Nucleation and Growth Kinetics of Copper in the Presence of Surfactants”
M.Peykova, E.Michailova, D.Stoychev, A.Milchev
Electrochim.Acta, 40, No16, 2595-2601 (1995)

”On the Role of Surface Active Agents in the Nucleation Step of Metal Electrodeposition on a Foreign Substrate”
E.Mihailova, M.Peykova, D.Stoychev, A.Milchev
J.Electroanalyt.Chem., 366, 195-202 (1994)

“Initial Stages of Copper Electrodeposition in the Presence of Organic Additives”
E.Michailova, I.Vitanova, D.Stoychev, A.Milchev
Electrochim.Acta, 38, No16, 2455-2458 (1993)

 

Physicomechanical and Physicochemical Properties of Electrodeposited Metal Coatings

“Experimental-numerical approach for characterization of mechanical properties of thin electrochemically deposited chromium and copper films”
 S. Cherneva, M. Yordanov, D. Stoychev, R. Iankov
SolidStatePhenomena, 159, 157-162 (2010)

“Characterization of mechanical properties of electrochemically deposited thin silver layers”
S. Cherneva ,R. Iankov, D. Stoychev
Transactions of the Institute of Metal Finishing (England), 88(4), 209-214 (2010)

“Finite-element modeling of micro indentation for determining the mechanical properties of electrochemically deposited thin nickel films”
S.Cherneva, R.Iankov, D.Stoychev
Journal of Materials Science and Technology  , 17(3), 240-248 (2009)

 “Determination of mechanical properties of  electrochemically deposited thin gold films”  
 S.Cherneva, R.Iankov, D.Stoychev
Journal of Theoretical and Applied Mechanics , 39(4), 65-72 (2009)

“Investigation of material properties of thin copper films through finit element modeling of microindentation test”
R.Iankov, S.Cherneva, D.Stoychev
Appl.Surf.Sci., 254(17), 5460-5469 (2008) 

“Numerical modeling of microindentation experiment for determination mechanical characteristics of metals and alloys”
S.Cherneva, R.Yankov, V.Kavarjikov, D.Stoychev
Journal of Theoretical and Applied Mechanics, 37(2), 45-58 (2007)

“Untersuchung des Korrosionsverhaltens von galvanischen Kupferueberzuegen”
D. Stoychev, M. Bratoeva und M. Stoycheva
Galvanotechnik , 90, No6, 1575-1582 (1999)

”Theoretical and Practical Aspects of Electrodeposition of Metal Coatings with Improved Properties”
M.Aroyo, D.Stoychev, N.Tzonev
Plating and Surf.Finishing, 85, No 9, 92-97 (1998)

“Effect of the Codeposited Carbon, Sulphur, Nitrogen and Hydrogen on the Microhardness of Bright Galvanic Copper Layers”
D.Stoychev
Trans.Inst.Metal Finishing (England), 76, No1, 26-28 (1998)

”The Influence of Pulse Frequency on the Hardness of Bright Copper Electrodeposits”
D.Stoychev, M.Aroyo
Plating and Surf.Finishing, 84, No 8, 26-28 (1997)

”Influence of the Nd-laser Irradiation on the Phase Composition and Structure of Iron Alloys”
D.Stoychev, M.Bratoeva, M.Stoycheva, S.Gurkovski
Trans.Inst.Metal Finishing (England), 74, No 5, 169-172 (1996)

“Modifizierung von eisenhaltigen metalloberflachen mit impulslaser”
D.Stoychev, M.Bratoeva, M.Stoycheva, S.Gurkovski
Galvanotechnik, 86, N5, 1760-1763 (1995)

“The Influence of the Character of some Organic Disulphides upon the Physico-mechanical Properties of Copper Platings”
D.Stoychev, I.Vitanova, R.Boukliev, I.Popova, N.Petkova, I.Pojarliev
J.Appl.Electrochem., 22, 987-990 (1992)

“Recovery and Recrystallization of Electrodeposited Bright Copper Coatings at Room Temperature.I.Microhardness in Relation to Coating Structure”
D.Stoychev, I.Tomov, I.Vitanova
J.Appl.Electrochem., 15, 879-886 (1985)

“Recovery and Recrystallization of Electrodeposited Bright Copper Coatings at Room Temperature.II. X-Ray Ivestigation of Primary Recrystallization”
I.Tomov, D.Stoychev, I.Vitanova
J.Appl.Electrochem., 15, 887-894 (1985)

 

Surface Treatment of Aluminium – Immersion Treatment and Deposition of Metal Layers

“Formation of Protective Films on Al in Electrolytes Containing no Cr6+ Ions”  
R.Lukanova, E.Stoyanova, M. Damyanov, D. Stoychev
Bulgarian Chemical Communications, 40(3), 340-347 (2008).

“ Electrochemical Aspects of the Immersion Treatment of Aluminium”
E.A.Stoyanova, D.S.Stoychev
J. Appl.Electrochem., 27, 685-690 (1997)

”An Improwed Method for Kinetics Investigations of Electrochemical Reactions with Gas Evolution”
D.Popov, E.Stoyanova, D.Stoychev
J.Appl. Electrochem., 23, 760-763 (1993)

“On the Kinetics of the Formation of Immersional Platings on Aluminium and Its Alloys”(Review)
D.Stoychev, E.Stoyanova
Berichtsband uber den  3 EAST Kongress “Surface Treatment of Aluminium and Other Light Metals”, EAST-Report, Eugen G.Leuze Verlag, Saulgau/Wurt., Ed.Prof.Ch.Raub, p.36-47 (1992), Schwabisch Gmund, Germany.

”Relationship between the Adhesion and the Electrode Products during Immesion Stannate Processing”
E.Stoyanova, I.Hristova, D.Stoychev
Bulletin of Electrochemistry (India), 7, No 5, 215-221 (1991)

”Kinetics of the Anodic and Cathodic Processes During Immersion Treatment of Aluminium in Stannate Solution”
D.Stoychev, E.Stoyanova
Bulletin of Electrochemistry (India), 4, No7, 673-678 (1988)

“Deposition of Thin Tin Coatings on Aluminium Alloys”
D.Stoychev, E.Stoyanova, S.Rashk ov
Surface Technology, 23, 127-142 (1984)

 

Surface Treatment of Aluminium – Anodisation, Laser Irradiation, Conversion Treatment

“Formation of Protective Films on Al in Electrolytes containing no Cr6+ Ions” 
R.Lukanova, E.Stoyanova, M. Damyanov, D. Stoychev
Bulgarian Chemical Communications, 40(3), 340-347 (2008).

“Decorative and Corrosion Protective Effect upon Colouring Anodized Aluminium with Azodyes”
E.Stoyanova, Y.Takeva, Z.Kostov, D.Stoychev
Trans.Inst.Metal Finishing (England), 82 (5/6), 157-163 (2004)

“Formation of oxide films on aluminium in solution of phosphoric acid “
E.Stoyanova, D.Stoychev
Journal of the University of Chemical Technology and Metallurgy, XXXVIII, No2, 511-516 (2003)

”Schutzeigenschaften von anodischen Oxiduberzugen auf Aluminium-legierungen”
E.Stoyanova, D.Popov, D.Stoychev
Galvanotechnik, 92, No8, 2075-2079 (2001)

“Oberflachen-behandlung mit Laserbestrahlung. Einflus auf das Korrosionsverhalten von Kupfer und Aluminium”
M.Bratoeva, M.Stoycheva, S.Gurkovski, D.Stoychev
Metalloberflahe, 51, No 8, 594-597 (1997)

“Morphological peculiarities, phase composition and properties of Al-12.7% Si alloy after laser irradiation”
S.Gurkovsky, D.Stoychev, M.Bratoeva, E.Hristoskov
Lasers in Engineering, 5, 23-30 (1996) 

“Bildung und Schutzfahigkeit von Oxidschichten auf Aluminium AD-1 und Al-01915”
E.Stoyanova, D.Popov, D.Stoychev
Galvanotechnik, 85, N10, 3240-3247 (1994)

”Korrosions und Lichtsbestandgkeit von Anodisch Oxidierten und Geferbtem Aluminium”
D.Popov, E.Stoyanova, D.Stoychev
Metalloberflache, 47, No 6, 288-292 (1993)