氧乙炔与等离子烧蚀试验的系统评价研究

doi:10.11896/cldb.21020107

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Abstract Aiming to evaluate the ablation performance of aerospace composite materials, a heat flux testing device for oxyacetylene and plasma ablation tests was established in this work. The main factors affecting the ablative heat flux were systematically evaluated, and the differences between oxyacetylene and plasma ablation tests were compared. Mathematical and physical models of heat flux as a function of ablation conditions were deducted, and the control strategy was proposed for oxyacetylene and plasma ablation tests. Results show that the heat flux for oxyacetylene and plasma ablation tests increases with the decrease of ablative distance, and shows a parabola relationship with the reciprocal of distance. The ablative heat flux of oxyacetylene is higher than that of plasma ablation at a longer distance, but becomes lower at a shorter distance. The heat flux for F4 plasma torch is similar to the 9M torch, but the change is more significant with the change of ablative distance, spraying current and auxiliary gas (H₂) flow rate. Moreover, the increase of auxiliary gas flow rate and the spraying current also enhances the heat flux of plasma ablation.

Key words： oxyacetylene ablation plasma ablation heat flux distance H₂ flow rate current

Published: Online: 2022-06-09

CLC number:

TB302

Fund:National Natural Science Foundation of China (51971013).

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	Articles by authors
	MA Kangzhi
	LI Chun
	NI Liyong
	YANG Zhenxiao
	QU Dong
	WEN Bo
	LI Wei

Cite this article:

MA Kangzhi,LI Chun,NI Liyong, et al. Research and Systematical Evaluation of Oxyacetylene and Plasma Ablation Tests[J]. Materials Reports, 2022, 36(11): 21020107-5.

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http://www.mater-rep.com/EN/10.11896/cldb.21020107 OR http://www.mater-rep.com/EN/Y2022/V36/I11/21020107

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