scholarly journals MICROSTRUCTURE AND PHASE COMPOSITION OF THE Ni-Si-B-Ag-BASED PLASMA SPRAY DEPOSIT

2016 ◽  
Vol 42 (2) ◽  
pp. 87
Author(s):  
Krysztof Ziewiec ◽  
Mirosława Wojciechowska ◽  
Marcin Jasiński ◽  
Dariusz Mucha ◽  
Marcin Lis
Keyword(s):  
Phase Composition ◽  
Plasma Spray ◽  
Spray Deposit

Microstructure and Ablation Property of TaC-SiC Composite Coatings

2016 ◽  
Vol 697 ◽  
pp. 535-538 ◽  
Author(s):  
Ya Ran Niu ◽  
Hui Pu ◽  
Li Ping Huang ◽  
Jun Zhao ◽  
Xue Bin Zheng
Keyword(s):  
Phase Composition ◽  
Mass Loss ◽  
Composite Coating ◽  
Plasma Spray ◽  
Composite Coatings ◽  
Plasma Flame ◽  
Ablation Resistance ◽  
Low Pressure Plasma Spray ◽  
Low Pressure Plasma ◽  
Ablation Property

TaC-based composite coatings containing different contents of SiC (5 vol.%, 10 vol.% and 15 vol.%, respectively) were fabricated by low pressure plasma spray (LPPS) technique. The phase composition and microstructure of the coatings were characterized. The ablation property of the TaC-SiC composite coatings was evaluated by a plasma flame over 2000 oC. The results showed that SiC was uniformly distributed in the composite coatings. The addition of SiC was good for the ablation-resistance of the composite coatings. The mass loss of the composite coatings decreased with increasing the amount of SiC. The mass loss of the TaC-15vol.%SiC composite coating was about 0.15 % after ablation for 60 s, which exhibited the best ablation-resistance among the three kinds of coatings. It was thought that the formed Ta2O5-SiO2 mixed layer on the coating surface contributed to the improved ablation resistance.

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