TY  - CONF
AU  - Dimitrijević, Silvana
AU  - Rajčić-Vujasinović, Mirjana
AU  - Dimitrijević, Stevan
AU  - Trumić, Biserka
AU  - Ivanović, Aleksandra
PY  - 2017
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6983
AB  - The aim of this work was to investigate the stability of the gold complex based on mercaptotriazole at optimum pH value of nine in the electrolyte with gold concentration of 1.5 g/dm3. Investigations were performed by visual monitoring and electrochemical characterization of electrolytes over the period of four months. The first visible signs of the decomposition of the complex were appeared one month after synthesis. Electrochemical characterization of gold complex base on mercaptotriazole performed by the open circuit potential measurement, cycling voltammetry method, and recording the polarization curves, with pH of the electrolyte measurement before and after each electrochemical experiment, showed that all the recorded characteristics remained almost unchanged for a period of four months.
PB  - Bor : University of Belgrade, Technical Faculty
C3  - Proceedings / 49th international october conference on mining and metallurgy - IOC 2017, Bor lake, Serbia, october 18-21, 2017
T1  - Stability of gold complex based on mercaptotriazole with gold concentration lower than optimal
EP  - 407
SP  - 404
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6983
ER  - 

@conference{
author = "Dimitrijević, Silvana and Rajčić-Vujasinović, Mirjana and Dimitrijević, Stevan and Trumić, Biserka and Ivanović, Aleksandra",
year = "2017",
abstract = "The aim of this work was to investigate the stability of the gold complex based on mercaptotriazole at optimum pH value of nine in the electrolyte with gold concentration of 1.5 g/dm3. Investigations were performed by visual monitoring and electrochemical characterization of electrolytes over the period of four months. The first visible signs of the decomposition of the complex were appeared one month after synthesis. Electrochemical characterization of gold complex base on mercaptotriazole performed by the open circuit potential measurement, cycling voltammetry method, and recording the polarization curves, with pH of the electrolyte measurement before and after each electrochemical experiment, showed that all the recorded characteristics remained almost unchanged for a period of four months.",
publisher = "Bor : University of Belgrade, Technical Faculty",
journal = "Proceedings / 49th international october conference on mining and metallurgy - IOC 2017, Bor lake, Serbia, october 18-21, 2017",
title = "Stability of gold complex based on mercaptotriazole with gold concentration lower than optimal",
pages = "407-404",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6983"
}

Dimitrijević, S., Rajčić-Vujasinović, M., Dimitrijević, S., Trumić, B.,& Ivanović, A.. (2017). Stability of gold complex based on mercaptotriazole with gold concentration lower than optimal. in Proceedings / 49th international october conference on mining and metallurgy - IOC 2017, Bor lake, Serbia, october 18-21, 2017
Bor : University of Belgrade, Technical Faculty., 404-407.
https://hdl.handle.net/21.15107/rcub_technorep_6983

Dimitrijević S, Rajčić-Vujasinović M, Dimitrijević S, Trumić B, Ivanović A. Stability of gold complex based on mercaptotriazole with gold concentration lower than optimal. in Proceedings / 49th international october conference on mining and metallurgy - IOC 2017, Bor lake, Serbia, october 18-21, 2017. 2017;:404-407.
https://hdl.handle.net/21.15107/rcub_technorep_6983 .

Dimitrijević, Silvana, Rajčić-Vujasinović, Mirjana, Dimitrijević, Stevan, Trumić, Biserka, Ivanović, Aleksandra, "Stability of gold complex based on mercaptotriazole with gold concentration lower than optimal" in Proceedings / 49th international october conference on mining and metallurgy - IOC 2017, Bor lake, Serbia, october 18-21, 2017 (2017):404-407,
https://hdl.handle.net/21.15107/rcub_technorep_6983 .

TY  - CONF
AU  - Dimitrijević, Silvana B.
AU  - Rajčić-Vujasinović, Mirjana M.
AU  - Jančić-Heinemann, Radmila M.
AU  - Bajat, Jelena B.
AU  - Trujić, Vlastimir K.
AU  - Trifunović, Dejan D.
PY  - 2012
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6920
AB  - The aim of this work was to investigate the effect of current density on thickness, surface roughness, visual
appearance and morphology of electrochemically deposited gold decorative coating obtained from
conventional cyanide electrolyte (AUROCIN DPB) and organic electrolyte, based on merkaptotriasole (AuMT). Mechanically and chemically prepared brass samples are first nickeled from acidic electrolyte. Nickel
was a substrate deposit and, then the decorative gold coatings were deposited from two types of electrolytes
at different current densities, at room temperature. Increase of current density has a positive effect on
thickness of decorative gold coatings obtained from both electrolytes, for cyanide electrolyte (at D=0.1
A/dm2
 b=0.080.12m, at D=0.4 A/dm2
 b=0.040.11m and at D=1 A/dm2
 b=0.080.12 m) and for
electrolyte based on merkaptotriasole (at D=0.1 A/dm2
 b=0.030.11m, at D=0.5 A/dm2
 b=0.040.11m,
D=0.83 A/dm2
 b=0.050.11 m, D=1 A/dm2
 b=0.080.12 m and at D=1.7 A/dm2
 b=0.040.11m). In
cyanide electrolyte, the surface roughness of gold coating is smallest for gold coating obtained at D=1 A/dm2
(Ra=0.082 m at 0.1 A/dm2
, Ra =0.628 m at 0.4 A/dm2
 and Ra=0.052 m at 0.1 A/dm2
). Increasing the
current density of Au-MT results in increasing of the surface roughness of gold coating (Ra =0.076 m at 0.1
A/dm2
, Ra=0.581 m at 0.5 A/dm2
, Ra=0.100 m at 0.83A/dm2
, Ra=0.066 m at 1 A/dm2
 and Ra=0.053 m
at 1.7 /dm2
). The best coating roughness profiles are obtained at current density of 1 A/dm2
 for both types of
electrolyte. The coating thickness is measured using the apparatus type UPA XRF 200 A by X-rays
reflection from gold atoms. Surface roughness is measured with a device TR 200 Surface Roughness Tester.
Roughness parameters were computer readings. This was done using software :TR 200 Time Data View.
Roughness is measured over a distance of 3.98 mm. The morphology of gold deposits, obtained from both
electrolytes, was studied using the scanning electron microscope (SEM model: JOEL JSM-6610LV).
PB  - Skopje : Society of chemists and technologists of Macedonia
C3  - Book of abstracts / XXIIth Congress of chemists and technologists of Macedonia (with internation participation), September 05 - September 09 2012, Lake Resort Metropol, Ohrid, R. Macedonia
T1  - Current density effect on the surface roughness of decorative gold coatings
SP  - 166
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6920
ER  - 

@conference{
author = "Dimitrijević, Silvana B. and Rajčić-Vujasinović, Mirjana M. and Jančić-Heinemann, Radmila M. and Bajat, Jelena B. and Trujić, Vlastimir K. and Trifunović, Dejan D.",
year = "2012",
abstract = "The aim of this work was to investigate the effect of current density on thickness, surface roughness, visual
appearance and morphology of electrochemically deposited gold decorative coating obtained from
conventional cyanide electrolyte (AUROCIN DPB) and organic electrolyte, based on merkaptotriasole (AuMT). Mechanically and chemically prepared brass samples are first nickeled from acidic electrolyte. Nickel
was a substrate deposit and, then the decorative gold coatings were deposited from two types of electrolytes
at different current densities, at room temperature. Increase of current density has a positive effect on
thickness of decorative gold coatings obtained from both electrolytes, for cyanide electrolyte (at D=0.1
A/dm2
 b=0.080.12m, at D=0.4 A/dm2
 b=0.040.11m and at D=1 A/dm2
 b=0.080.12 m) and for
electrolyte based on merkaptotriasole (at D=0.1 A/dm2
 b=0.030.11m, at D=0.5 A/dm2
 b=0.040.11m,
D=0.83 A/dm2
 b=0.050.11 m, D=1 A/dm2
 b=0.080.12 m and at D=1.7 A/dm2
 b=0.040.11m). In
cyanide electrolyte, the surface roughness of gold coating is smallest for gold coating obtained at D=1 A/dm2
(Ra=0.082 m at 0.1 A/dm2
, Ra =0.628 m at 0.4 A/dm2
 and Ra=0.052 m at 0.1 A/dm2
). Increasing the
current density of Au-MT results in increasing of the surface roughness of gold coating (Ra =0.076 m at 0.1
A/dm2
, Ra=0.581 m at 0.5 A/dm2
, Ra=0.100 m at 0.83A/dm2
, Ra=0.066 m at 1 A/dm2
 and Ra=0.053 m
at 1.7 /dm2
). The best coating roughness profiles are obtained at current density of 1 A/dm2
 for both types of
electrolyte. The coating thickness is measured using the apparatus type UPA XRF 200 A by X-rays
reflection from gold atoms. Surface roughness is measured with a device TR 200 Surface Roughness Tester.
Roughness parameters were computer readings. This was done using software :TR 200 Time Data View.
Roughness is measured over a distance of 3.98 mm. The morphology of gold deposits, obtained from both
electrolytes, was studied using the scanning electron microscope (SEM model: JOEL JSM-6610LV).",
publisher = "Skopje : Society of chemists and technologists of Macedonia",
journal = "Book of abstracts / XXIIth Congress of chemists and technologists of Macedonia (with internation participation), September 05 - September 09 2012, Lake Resort Metropol, Ohrid, R. Macedonia",
title = "Current density effect on the surface roughness of decorative gold coatings",
pages = "166",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6920"
}

Dimitrijević, S. B., Rajčić-Vujasinović, M. M., Jančić-Heinemann, R. M., Bajat, J. B., Trujić, V. K.,& Trifunović, D. D.. (2012). Current density effect on the surface roughness of decorative gold coatings. in Book of abstracts / XXIIth Congress of chemists and technologists of Macedonia (with internation participation), September 05 - September 09 2012, Lake Resort Metropol, Ohrid, R. Macedonia
Skopje : Society of chemists and technologists of Macedonia., 166.
https://hdl.handle.net/21.15107/rcub_technorep_6920

Dimitrijević SB, Rajčić-Vujasinović MM, Jančić-Heinemann RM, Bajat JB, Trujić VK, Trifunović DD. Current density effect on the surface roughness of decorative gold coatings. in Book of abstracts / XXIIth Congress of chemists and technologists of Macedonia (with internation participation), September 05 - September 09 2012, Lake Resort Metropol, Ohrid, R. Macedonia. 2012;:166.
https://hdl.handle.net/21.15107/rcub_technorep_6920 .

Dimitrijević, Silvana B., Rajčić-Vujasinović, Mirjana M., Jančić-Heinemann, Radmila M., Bajat, Jelena B., Trujić, Vlastimir K., Trifunović, Dejan D., "Current density effect on the surface roughness of decorative gold coatings" in Book of abstracts / XXIIth Congress of chemists and technologists of Macedonia (with internation participation), September 05 - September 09 2012, Lake Resort Metropol, Ohrid, R. Macedonia (2012):166,
https://hdl.handle.net/21.15107/rcub_technorep_6920 .