Influence of alternative magnetic field on macro morphology and microstructure of laser cladding Fe-based composite coating

2012 ◽  
Vol 20 (11) ◽  
pp. 2402-2410 ◽  
Author(s):  
刘洪喜 LIU Hong-xi ◽  
蔡川雄 CAI Chuan-xiong ◽  
蒋业华 JIANG Ye-hua ◽  
张晓伟 ZHANG Xiao-wei ◽  
王传琦 WANG Chuan-qi
Keyword(s):  
Magnetic Field ◽  
Composite Coating ◽  
Laser Cladding ◽  
Alternative Magnetic Field

Microstructure and property of Ni60CuMoW composite coating treated prepared with magnetic field and laser cladding process

2012 ◽  
Vol 24 (12) ◽  
pp. 2901-2905 ◽  
Author(s):  
刘洪喜 Liu Hongxi ◽  
纪升伟 Ji Shengwei ◽  
蒋业华 Jiang Yehua ◽  
张晓伟 Zhang Xiaowei ◽  
王传琦 Wang Chuanqi
Keyword(s):  
Magnetic Field ◽  
Composite Coating ◽  
Laser Cladding ◽  
Laser Cladding Process

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

Effect of magnetic field on crack control of Co-based alloy laser cladding

2021 ◽  
Vol 141 ◽  
pp. 107129
Author(s):  
Kang Qi ◽  
Yong Yang ◽  
Rui Sun ◽  
Guofang Hu ◽  
Xin Lu ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Laser Cladding ◽  
Crack Control

scholarly journals Isothermal Oxidation Performance of Laser Cladding Assisted with Preheat (LCAP) Tribaloy T-800 Composite Coatings Deposited on EN8

Coatings ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 843
Author(s):  
Sipiwe Trinity Nyadongo ◽  
Sisa Lesley Pityana ◽  
Eyitayo Olatunde Olakanmi
Keyword(s):  
Iron Oxide ◽  
Composite Coating ◽  
Laser Cladding ◽  
Composite Coatings ◽  
Parabolic Rate Constant ◽  
Mass Gain ◽  
Isothermal Oxidation ◽  
Operational Parameters ◽  
Temperature Oxidation ◽  
Service Environments

It is anticipated that laser cladding assisted with preheat (LCAP)-deposited Tribaloy (T-800) composite coatings enhances resistance to structural degradation upon exposure to elevated-temperature oxidation service environments. The oxidation kinetics of LCAP T-800 composite coatings deposited on EN8 substrate and its mechanisms have not been explored in severe conditions that are similar to operational parameters. The isothermal oxidation behaviour of the T-800 composite coating deposited on EN8 via LCAP was studied at 800 °C in air for up to 120 h (5 × 24 h cycles) and contrasted to that of uncoated samples. The mass gain per unit area of the coating was eight times less than that of the uncoated EN8 substrate. The parabolic rate constant (Kp) for EN8 was 6.72 × 10−12 g2·cm−4·s−1, whilst that for the T-800 composite coating was 8.1 × 10−13 g2·cm−4·s−1. This was attributed to a stable chromium oxide (Cr2O3) layer that formed on the coating surface, thereby preventing further oxidation, whilst the iron oxide film that formed on the EN8 substrate allowed the permeation of the oxygen ions into the oxide. The iron oxide (Fe2O3) film that developed on EN8 spalled, as evidenced by the cracking of oxide when the oxidation time was greater than 72 h, whilst the Cr2O3 film maintained its integrity up to 120 h. A parabolic law was observed by the T-800 composite coating, whilst a paralinear law was reported for EN8 at 800 °C up to 120 h. This coating can be used in turbine parts where temperatures are <800 °C.

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