Ablation Behaviors of ZrC-20vol.%MoSi2 Composite Coating under Different Heat Fluxes

T. Liu; Ya Ran Niu; Chong Li; Li Ping Huang; Xue Bin Zheng; Chuan Xian Ding

doi:10.4028/www.scientific.net/SSP.281.516

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HomeSolid State PhenomenaSolid State Phenomena Vol. 281Ablation Behaviors of ZrC-20vol.%MoSi2 Composite...

Ablation Behaviors of ZrC-20vol.%MoSi₂ Composite Coating under Different Heat Fluxes

Abstract:

ZrC-20vol.%MoSi₂ (ZM) composite coating was fabricated by vacuum plasma spray and the ablation resistance was assessed using plasma flame under low (1.94 MW/m²) and high (3.01 MW/m²) heat fluxes, respectively. Results showed that the ultimate surface temperatures of ZM coating were about 2100 °C and 2400 °C, respectively. ZM coating exhibited good ablation resistance at low heat flux, which benefited from the low evaporation of SiO₂ and the diffusion of Si derived from MoSi₂ decomposition. However, bubble-burst event took place under high heat flux. The different ablation behaviors of ZrC-MoSi₂ coating were analyzed, which might contribute to the application of ultra-high temperature ceramic coatings.

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Periodical:

Solid State Phenomena (Volume 281)

Pages:

516-521

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.281.516

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Online since:

August 2018

Authors:

T. Liu, Ya Ran Niu*, Chong Li, Li Ping Huang, Xue Bin Zheng, Chuan Xian Ding

Keywords:

Ablation Behaviors, Heat Flux, Vacuum Plasma Spray, ZrC-20vol.%MoSi₂

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