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.

Ablation Behavior of Low Pressure Plasma Sprayed TiB2-MoSi2 Composite Coatings

2016 ◽  
Vol 697 ◽  
pp. 685-688
Author(s):  
Li Ping Huang ◽  
Ya Ran Niu ◽  
Hong Li ◽  
Mu Su Ren ◽  
Xue Bin Zheng ◽  
...  
Keyword(s):  
Phase Composition ◽  
Composite Coatings ◽  
Great Influence ◽  
Low Pressure ◽  
Plasma Flame ◽  
Pressure Plasma ◽  
Ablation Resistance ◽  
Low Pressure Plasma Spray ◽  
Low Pressure Plasma ◽  
Plasma Sprayed

In this work, TiB2-MoSi2 composite coatings with various contents of MoSi2 (20 vol. % and 40 vol. %, respectively) were fabricated on SiC coated C/C substrates by low pressure plasma spray (LPPS) technique. The microstructure and phase composition of the coatings were characterized. The ablation behaviors of the composite coatings were evaluated and compared with the pure TiB2 coating using a plasma flame of about 2200°C. The results showed that MoSi2 was uniformly distributed in the TiB2 matrix. All the coatings kept intact after the ablation for 60s - 180s, indicating their excellent ablation resistance. The addition of MoSi2 had great influence on the ablation behavior of the composite coatings. The TiB2 coating gained mass after the ablation. The mass of the TM20 coating increased firstly (60s and 120s) and then decreased at 180 s. Mass loss was observed for the TM40 coating during the whole procedure of ablation test.

scholarly journals Fabrication of TiB2 Dispersed Fe-Cr Composite Coatings by Low Pressure Plasma Spray and Evaluation of Its Property

Shinku ◽  
2007 ◽  
Vol 50 (5) ◽  
pp. 394-397
Author(s):  
Masahiro FUKUMOTO ◽  
Takurou HAMADA ◽  
Motohiro YAMADA ◽  
Tosiaki YASUI
Keyword(s):  
Plasma Spray ◽  
Composite Coatings ◽  
Low Pressure ◽  
Pressure Plasma ◽  
Low Pressure Plasma Spray ◽  
Low Pressure Plasma

Dense ZrB2–MoSi2 composite coating fabricated by low pressure plasma spray (LPPS)

2013 ◽  
Vol 39 (8) ◽  
pp. 9773-9777 ◽  
Author(s):  
Yaran Niu ◽  
Hongyan Wang ◽  
Hong Li ◽  
Xuebin Zheng ◽  
Chuanxian Ding
Keyword(s):  
Composite Coating ◽  
Plasma Spray ◽  
Low Pressure ◽  
Pressure Plasma ◽  
Low Pressure Plasma Spray ◽  
Low Pressure Plasma ◽  
Mosi2 Composite

Fabrication and Ablation Behavior of Plasma Sprayed ZrC-W Composite Coatings

2014 ◽  
Vol 602-603 ◽  
pp. 552-555
Author(s):  
Dan Lu ◽  
Ya Ran Niu ◽  
Xue Lian Ge ◽  
Xue Bing Zheng ◽  
Guang Chen
Keyword(s):  
Thermal Conductivity ◽  
Thermal Shock ◽  
Plasma Spray ◽  
Composite Coatings ◽  
Lamellar Microstructure ◽  
Atmospheric Plasma Spray ◽  
Atmospheric Plasma ◽  
Plasma Flame ◽  
Plasma Sprayed ◽  
Zrc Coating

In this work, atmospheric plasma spray (APS) technology was applied to fabricate ZrC-W composite coatings. The microstructure of the composite coatings was characterized. The influence of W content on the ablation-resistant and thermal shock properties of ZrC-W composite coatings was evaluated using a plasma flame. The results show that the ZrC-W composite coatings had typically lamellar microstructure, which was mainly made up of cubic ZrC, cubic W and a small amount of tetragonal ZrO2. The ZrC-W coatings had improved ablation resistant and thermal shock properties compared with those of the pure ZrC coating. It was supposed that the improved density, thermal conductivity and toughness of the composite coatings contributed to this phenomenon.

Preparation and characterization of aluminum-based coatings deposited by very low-pressure plasma spray

2019 ◽  
Vol 380 ◽  
pp. 125034 ◽  
Author(s):  
Xiujuan Fan ◽  
Geoffrey Darut ◽  
Marie Pierre Planche ◽  
Chen Song ◽  
Hanlin Liao ◽  
...  
Keyword(s):  
Plasma Spray ◽  
Low Pressure ◽  
Pressure Plasma ◽  
Low Pressure Plasma Spray ◽  
Low Pressure Plasma

Microstructure of 316L Stainless Steel Coating Deposited by the Low Pressure Plasma Spray

2014 ◽  
Vol 644-650 ◽  
pp. 4888-4891
Author(s):  
De Ming Yang ◽  
Bo Han Tian
Keyword(s):  
Stainless Steel ◽  
Plasma Spray ◽  
316L Stainless Steel ◽  
Low Pressure ◽  
Air Plasma ◽  
Pressure Plasma ◽  
Optical Micrograph ◽  
Low Pressure Plasma Spray ◽  
Low Pressure Plasma ◽  
Stainless Steel Coatings

Original equiaxed 316L stainless steel coatings were successfully deposited by the low pressure plasma spray. For comparison, the coatings of 316L stainless steel with normal lamellar structure were also prepared by the air plasma spray (APS). The microstructures were investigated using optical micrograph (OM). The results show that the microstructures of LPPS 316L stainless steel coatings reveal the fine equiaxed microstructures like the solidified stainless steels,which are significantly different from that of APS coatings with lamellar structures.

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