scholarly journals Mechanical features of copper coatings electrodeposited by the pulsating current (PC) regime on Si(111) substrate

2020 ◽  
pp. 12173-12191 ◽  
Author(s):  
Ivana O. Mladenović ◽  
Keyword(s):  
Copper Coatings ◽  
Pulsating Current

scholarly journals Determination of the absolute hardness of electrolytically produced copper coatings by application of the Chicot-Lesage composite hardness model

2021 ◽  
pp. 105-105
Author(s):  
Ivana Mladenovic ◽  
Jelena Lamovec ◽  
Dana Vasiljevic-Radovic ◽  
Vesna Radojevic ◽  
Nebojsa Nikolic
Keyword(s):  
Pause Duration ◽  
Atomic Force ◽  
Copper Coatings ◽  
The Absolute ◽  
Hardness Model ◽  
Composite Hardness ◽  
Pulsating Current ◽  
Good Agreement ◽  
Coating Hardness

In this study, a novel procedure based on application of the Chicot?Lesage (C?L) composite hardness model was proposed for determination of an absolute hardness of electrolytically produced copper coatings. The Cu coatings were electrodeposited on the Si(111) substrate by the pulsating current (PC) regime with a variation of the following parameters: the pause duration, the current density amplitude and the coating thickness. The topography of produced coatings was characterized by atomic force microscope (AFM), while a hardness of the coatings was examined by Vickers microindentation test. Applying the C?L model, the critical relative indentation depth (RID)c of 0.14 was determined, which is independent of all examined parameters of the PC regime. This RID value separated the area in which the composite hardness of the Cu coating corresponded to its absolute hardness (RID < 0.14) from the area in which application of the C?L model was necessary for a determination of the absolute coating hardness (RID ? 0.14). The obtained value was in a good agreement with the value already published in the literature.

scholarly journals Influence of parameters of the pulsating current (PC) regime on morphological, structural and hardness characteristics of copper coatings electrodeposited on Si(111)

2021 ◽  
Author(s):  
Ivana Mladenović ◽  
Nebojša Nikolić ◽  
Jelena Lamovec ◽  
Dana Vasiljević Radović ◽  
Vesna Radojević
Keyword(s):  
Copper Coatings ◽  
Pulsating Current

Aluminum and copper deposition through the process of thermal flame spray on polypropylene-pine wood fiber composite filaments and their applications

2021 ◽  
pp. 002199832110365
Author(s):  
Sônia MA Veroneze ◽  
Thais HS Flores-Sahagun ◽  
Ramón SC Paredes ◽  
Kestur Gundappa Satyanarayana
Keyword(s):  
Fiber Composite ◽  
Wood Fiber ◽  
Physical And Mechanical Properties ◽  
Heat Treating ◽  
Flame Spray ◽  
Pine Wood ◽  
Thermal Spray Process ◽  
Spray Process ◽  
Copper Coatings ◽  
Study Results

This paper presents a study about polypropylene-pine wood composites, both as filaments and products, coated with aluminum (Al) or copper (Cu), obtained through flame thermal spray process after subjecting the composites to thermal treatments in the second and third step of the study. Results revealed that a previous aluminum layer was needed in order to obtain copper coatings on the composites. The physical and mechanical properties of both metal coated composite filaments were also evaluated and compared with the uncoated composite filaments with and without heat treating these. Consequently, it was observed that the nature of the coating adhesion on the substrates was mechanical, and therefore abrasion blasting of filaments or the use of a higher wood fiber content in the composite improved the Al or Cu adhesion. Also, it was observed that extruded wood fiber/PP filaments should not be cooled in water because pieces might be molded directly once the moisture affects the metal coatings adhesion onto the substrates.

High-performance polyvinylpyrrolidone capped copper coatings via ultrasonic-assisted supercritical-CO2 electrodeposition: Electrochemical evaluation

2021 ◽  
Vol 409 ◽  
pp. 126926
Author(s):  
Sabarison Pandiyarajan ◽  
Po-Ju Hsiao ◽  
Ai-Ho Liao ◽  
Muthusankar Ganesan ◽  
Sheng-Tung Huang ◽  
...  
Keyword(s):  
Supercritical Co2 ◽  
High Performance ◽  
Copper Coatings ◽  
Ultrasonic Assisted ◽  
Electrochemical Evaluation

scholarly journals Application of the Composite Hardness Models in the Analysis of Mechanical Characteristics of Electrolytically Deposited Copper Coatings: The Effect of the Type of Substrate

Metals ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 111
Author(s):  
Ivana O. Mladenović ◽  
Nebojša D. Nikolić ◽  
Jelena S. Lamovec ◽  
Dana Vasiljević-Radović ◽  
Vesna Radojević
Keyword(s):  
Mechanical Characteristics ◽  
Dislocation Creep ◽  
Average Current Density ◽  
Fine Grained ◽  
Copper Coatings ◽  
Electrochemically Deposited ◽  
Composite Models ◽  
Average Current ◽  
Composite Hardness ◽  
Coating Hardness

The mechanical characteristics of electrochemically deposited copper coatings have been examined by application of two hardness composite models: the Chicot-Lesage (C-L) and the Cheng-Gao (C-G) models. The 10, 20, 40 and 60 µm thick fine-grained Cu coatings were electrodeposited on the brass by the regime of pulsating current (PC) at an average current density of 50 mA cm−2, and were characterized by scanning electron (SEM), atomic force (AFM) and optical (OM) microscopes. By application of the C-L model we determined a limiting relative indentation depth (RID) value that separates the area of the coating hardness from that with a strong effect of the substrate on the measured composite hardness. The coating hardness values in the 0.9418–1.1399 GPa range, obtained by the C-G model, confirmed the assumption that the Cu coatings on the brass belongs to the “soft film on hard substrate” composite hardness system. The obtained stress exponents in the 4.35–7.69 range at an applied load of 0.49 N indicated that the dominant creep mechanism is the dislocation creep and the dislocation climb. The obtained mechanical characteristics were compared with those recently obtained on the Si(111) substrate, and the effects of substrate characteristics such as hardness and roughness on the mechanical characteristics of the electrodeposited Cu coatings were discussed and explained.

Chloride Removal from Archaeological Cast Iron by Pulsating Current

2002 ◽  
Vol 47 (2) ◽  
pp. 117 ◽  
Author(s):  
F. Dalard ◽  
Y. Gourbeyre ◽  
C. Degrigny
Keyword(s):  
Cast Iron ◽  
Chloride Removal ◽  
Pulsating Current

Endogenous nitric oxide-generating surfaces via polydopamine-copper coatings for preventing biofilm dispersal and promoting microbial killing

2021 ◽  
pp. 112297
Author(s):  
Jayanti Mendhi ◽  
Srinivas Sulugodu Ramachandra ◽  
Indira Prasadam ◽  
Saso Ivanovski ◽  
Ying Yang ◽  
...  
Keyword(s):  
Nitric Oxide ◽  
Copper Coatings ◽  
Endogenous Nitric Oxide ◽  
Biofilm Dispersal
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