journal article·2022-01-02

Ablation behaviour of coated Al 2 O 3f /Al 2 O 3 composites under oxyacetylene torch flame

Wen Jin, Xiang Yang, Zhang Wen, Zhu Cheng-xin, Wang Yi, Cao Jie, Ma Yin-wei, Cao Jian-hui

Advances in Applied Ceramics· Volume 121· Issue 1
Publisher page

Abstract

Oxide fibres have attracted considerable attention as protective layers for alumina composites. In this study, alumina (Al2O3f/Al2O3) matrix composites reinforced with continuous fibres were fabricated by a sol–gel process and were coated with Y2O3 or ZrO2 to improve their ablation resistance. The ablation behaviour of the coated composites was analysed under the oxyacetylene torch flame test. The results suggested that the Y2O3 and ZrO2 coatings as sacrificial barrier layers could protect the integrity of the composites. The linear ablation rate and mass ablation rate of composites with Y2O3 coating were 0.00251 mm s−1 and 0.00143 g s−1, respectively; the linear ablation rate and mass ablation rate of composites with ZrO2 coating were 0.00142 mm s−1 and 0.00112 g s−1, respectively. After a 120 s ablation test at 2200°C, the coatings still showed a stable structure and a high protection performance.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Advanced ceramic materials synthesis · Energetic Materials and Combustion · Flame retardant materials and properties

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Hunan Provincial Key Laboratory of Fine Ceramics and Powder Materials, Hunan University of Humanities, Science and Technology, Loudi, Hunan, People’s Republic of China

Science and Technology on Advanced Ceramic Fibers and Composites Laboratory, College of Aerospace Science and Engineering, National University of Defense Technology, Changsha, Hunan, People’s Republic of China

Unit 96901 of People’s Liberation Army, Beijing, People’s Republic of China

Beijing Aerospace Technology Institute, Beijing, People’s Republic of China

Xinxing Electron Ceramics Co., Ltd., Xinhua, Hunan, People’s Republic of China

Funding

National Science Foundation of China · Hunan Natural Science Foundation · Key Laboratory Fund

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