期刊
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
卷 42, 期 15, 页码 6898-6907出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.jeurceramsoc.2022.07.045
关键词
TaC coating; Chemical vapor deposition; Crystal structure; Carbon; carbon composite; Ablation behavior
资金
- National Natural Science Foundations of China
- Creative Research Foundation of Science and Technology on Thermostructural Composite Materials Laboratory
- [51727804]
- [52130205]
- [91860203]
- [JCKYS2019607002]
TaC coatings with different crystal structures were prepared on carbon/carbon composites, and their ablative behaviors were investigated. The coatings with acicular crystal structure showed better ablation resistance, while the formation of lamella grains and porous middle layer resulted in coating damage and exfoliation.
TaC coatings with four kinds of crystal structures were prepared on carbon/carbon composites by chemical vapor deposition. The surface morphologies, microstructure transformation, and ablative behaviors of TaC coated C/C specimens were investigated. Results show that the coatings with acicular crystal structure exhibit better ablation resistance with lower ablation rates, especially the needle-piled sample. The bistratal structure composed of dense glass layer and compact TaC layer is beneficial for maintaining the integrity of acicular samples after ablation. But the formation of lamella grains and porous middle layer is the main factor for the damage and even exfoliation of the columnar specimens.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据