Ablation Experimetns of Heat-Resisting Ceramics SiC and Si3N4 in High-Temperature Ar Plasma Free Jets : Heat Transfer, Power, Combustion, Thermophysical Properties

Hiroyuki SHIRAI; Katsuine TABEI; Syuichi AKIBA

doi:10.1299/jsme1987.30.945

Ablation Experimetns of Heat-Resisting Ceramics SiC and Si₃N₄ in High-Temperature Ar Plasma Free Jets : Heat Transfer, Power, Combustion, Thermophysical Properties

Hiroyuki SHIRAI, Katsuine TABEI, Syuichi AKIBA

著者情報

キーワード: Thermodynamics, Ablation, Fine Ceramics, Ar Plasma Jet, Ablation Material

ジャーナルフリー

1987 年 30 巻 264 号 p. 945-949

DOI https://doi.org/10.1299/jsme1987.30.945

詳細

抄録

Experimental measurements of the ablation properties of the fine ceramics SiC and Si₃N₄ are performed in an atmospheric high-temperature argon plasma jet. The effective heat of ablation is measured for the heat flux of 1.2∼2.6×10⁴ kW/m². It is found to be about 2×10⁴kJ/kg for Si₃N₄ and 5∼8×10⁴kJ/kg for SiC. In addition, features of the ablated surface of the materials are observed with the aid of an electron microscope, and on this basis, the mechanism of the ablation is discussed.

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