Synthesis of SiC/Ni Composite Coatings by Laser Cladding and Property of Erosion Resistance

2008 ◽  
Vol 35 (1) ◽  
pp. 147-150
Author(s):  
徐斌 Xu Bin ◽  
楼白杨 Lou Baiyang ◽  
白万金 Bai Wanjin ◽  
董刚 Dong Gang
Keyword(s):  
Laser Cladding ◽  
Erosion Resistance ◽  
Composite Coatings

Laser cladding Ni-base composite coatings reinforced by in-situ synthesized multiple carbide particles

2008 ◽  
Author(s):  
Ruiquan Kang ◽  
Mingxing Ma ◽  
Wenjin Liu ◽  
Minlin Zhong ◽  
Yide Kan ◽  
...  
Keyword(s):  
Laser Cladding ◽  
Composite Coatings ◽  
Base Composite ◽  
Carbide Particles

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.

Phase transformation and tribological properties of Ag-MoO 3 contained NiCrAlY based composite coatings fabricated by laser cladding

2017 ◽  
Vol 93 ◽  
pp. 79-86 ◽  
Author(s):  
Lingqian Wang ◽  
Jiansong Zhou ◽  
Benbin Xin ◽  
Youjun Yu ◽  
Shufang Ren ◽  
...  
Keyword(s):  
Phase Transformation ◽  
Laser Cladding ◽  
Tribological Properties ◽  
Composite Coatings

scholarly journals Microstructures and Properties of Laser Cladding Al-TiC-CeO2 Composite Coatings

Materials ◽  
2018 ◽  
Vol 11 (2) ◽  
pp. 198 ◽  
Author(s):  
Xing He ◽  
Dejun Kong ◽  
Renguo Song
Keyword(s):  
Laser Cladding ◽  
Composite Coatings
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