scholarly journals Possibilities of hardness measurement of composite coating based on ptfe with Al2O3 particles applied on aluminium substrate

2020 ◽  
Author(s):  
Jaroslava Svobodova ◽  
Irena Lysonkova
Keyword(s):  
Composite Coating ◽  
Hardness Measurement ◽  
Aluminium Substrate ◽  
Al2o3 Particles

Influence of Nano Al2O3 Particles on Morphology and Microstructure of Cu-Al2O3 Composite Coating by Jet Electrodeposition

2018 ◽  
Vol 764 ◽  
pp. 164-173 ◽  
Author(s):  
Hui Fan ◽  
Man Liu ◽  
Yang Pei Zhao ◽  
Shan Kui Wang
Keyword(s):  
Surface Morphology ◽  
Composite Coating ◽  
Current Density ◽  
Steel Substrate ◽  
Metal Layer ◽  
Xrd Analysis ◽  
304 Stainless Steel ◽  
Al2o3 Nanoparticles ◽  
Jet Electrodeposition ◽  
Al2o3 Particles

Jet electrodeposition process is a very promising method in fabricating metal matrix composites reinforced with ceramic particles. In use of this method, insoluble particles suspended in an electrolytic bath are impinged onto and embedded in a growing metal layer. This paper is focused on the investigations of the copper matrix nanocomposite coatings with hard Al2O3 nanoparticles, electrochemically deposited from jet-circulated baths on 304 stainless steel substrate. The Cu-Al2O3 composite coating was characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD) analysis. The effects of electrolyte jet velocity, current density, addition amount of Al2O3 in the electrolyte were analyzed on the microstructure change, surface morphology change as well as codeposited content of Al2O3 particles in the composite coating. It was found that increasing content of Al2O3 particles in electrolyte may improve composite coating surface morphology and increase the practical current density by exerting impingement effect on the cathode deposit surface, till excessive Al2O3 e.g.20g/L particles was added. Besides, appropriate amount of nanoparticles in the electrolyte also could offer grain refinement by providing nanocrystalline sized between 30~60 nm with current density in the range of 100~500 A/dm2.

Microstructure of SiC/Al composite coating by CO2 laser cladding

2004 ◽  
Author(s):  
Yang Xi-Chen ◽  
Li Hui-Shan ◽  
Wang Yun-Shan ◽  
Ma Bing ◽  
Yi Ying-Hui
Keyword(s):  
Composite Coating ◽  
Laser Cladding ◽  
Co2 Laser ◽  
Al Composite

Laser Cladding of Hard TiO xN y/Ti Composite Coating on Ti Alloy

2020 ◽  
Author(s):  
Yitian Zhao ◽  
Mingyuan Lu ◽  
Zhiqi Fan ◽  
Qiyang Tan ◽  
Han Huang
Keyword(s):  
Composite Coating ◽  
Laser Cladding ◽  
Ti Alloy

Electrochemical behaviour of chromium–graphene composite coating

RSC Advances ◽  
2016 ◽  
Vol 6 (67) ◽  
pp. 62083-62090 ◽  
Author(s):  
Rekha M. Y. ◽  
M. K. Punith Kumar ◽  
Chandan Srivastava
Keyword(s):  
Composite Coating ◽  
Zno Nanoparticles ◽  
Electrochemical Behaviour ◽  
Chromium Coating ◽  
Corrosion Resistant ◽  
Graphene Composite ◽  
Pure Chromium

This work illustrates the role of graphene in enhancing the corrosion resistant properties of chromium–graphene composite coating when compared to the corrosion resistant properties of pure chromium coating containing ZnO nanoparticles.

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