Influence of in-flight particle characteristics and substrate temperature on the formation mechanisms of hypereutectic Al-Si-Cu coatings prepared by supersonic atmospheric plasma spraying

2021 ◽  
Author(s):  
Peng-fei He ◽  
Guo-zheng Ma ◽  
Hai-dou Wang ◽  
Ling Tang ◽  
Ming Liu ◽  
...  
Keyword(s):  
Substrate Temperature ◽  
Plasma Spraying ◽  
Atmospheric Plasma Spraying ◽  
Atmospheric Plasma ◽  
Formation Mechanisms ◽  
Particle Characteristics ◽  
Supersonic Atmospheric Plasma Spraying

scholarly journals Ablation mechanism and morphology evolution of the HfC-SiC coating for C/C composites deposited by supersonic atmospheric plasma spraying

2019 ◽  
Vol 28 ◽  
pp. 096369351986994 ◽  
Author(s):  
Yang Yang ◽  
Kezhi Li ◽  
Chun Zhao
Keyword(s):  
Plasma Spraying ◽  
Atmospheric Plasma Spraying ◽  
Atmospheric Plasma ◽  
Carbon Composites ◽  
X Ray Diffraction ◽  
Ablation Resistance ◽  
Ablation Mechanism ◽  
Coated Carbon ◽  
Supersonic Atmospheric Plasma Spraying ◽  
New Phase

HfC-SiC protective coating was deposited on the surface of SiC-coated carbon/carbon composites by supersonic atmospheric plasma spraying due to the high arc temperature and the efficient deposition rate. The morphology and microstructure of the HfC-SiC coating were analyzed by X-ray diffraction and scanning electron microscopy. The results showed that Hf and Si elements distributed uniformly in the coating and the coating was dense without crack. Ablation resistance test was processed by oxyacetylene torch. During the ablation process, the sintering rate of HfO2 was slow, and more oxygen diffused into the internal coating, which caused the oxidation of the internal coating and damaged the structure of internal coating in the ablation center region. In addition, during cooling process, a new phase HfSiO4 was generated by the reaction between HfO2 and SiO2, which acted as a pinning agent to prevent the further expansion of the crack.

Lanthanum hydride doped tungsten-based coating fabricated by supersonic atmospheric plasma spraying

2016 ◽  
Vol 299 ◽  
pp. 153-161 ◽  
Author(s):  
Qing Yu Hou ◽  
Lai Ma Luo ◽  
Zhen Yi Huang ◽  
Ping Wang ◽  
Ting Ting Ding ◽  
...  
Keyword(s):  
Plasma Spraying ◽  
Atmospheric Plasma Spraying ◽  
Atmospheric Plasma ◽  
Supersonic Atmospheric Plasma Spraying
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