4.7 Article

Evaluation of ablation resistant ZrC-SiC multilayer coating for SiC coated carbon/carbon composites under oxyacetylene and laser conditions

期刊

CORROSION SCIENCE
卷 205, 期 -, 页码 -

出版社

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2022.110427

关键词

Carbon; carbon composites; Plasma spraying; Multilayer coating; Laser irradiation; Oxyacetylene ablation

资金

  1. Innovation Foundation for Doctor Dissertation of Northwestern Polytechnical University [CX2021006]
  2. National Natural Science Foundation of China [91860203, 51727804]
  3. Natural Science Basic Research Plan in Shaanxi Province of China [2020JQ-175]
  4. Creative Research Foundation of Science and Technology on Thermo-structural Composite Materials Laboratory

向作者/读者索取更多资源

In this study, a multilayer coating based on ZrC-SiC system was successfully fabricated and its performance was evaluated through ablation tests. The results showed that the coating exhibited excellent ablation resistance, with only shallow ablation pit forming under laser irradiation.
In this work, a multilayer coating based on ZrC-SiC system was fabricated on SiC coated carbon/carbon composites by plasma spraying. Ablation tests were carried out using oxyacetylene torch (2.38 MW/m2) and laser irradiation (113.18 MW/m2). The maximum temperatures reached values over 2000 degrees C for oxyacetylene ablation and 2784 degrees C for laser ablation. Macroscopical survey showed an unbroken profile of the sample after 600 s ablation, though microstructural analysis revealed the formation of a sintered scale with delamination and depletion region. Furthermore, the coating behaved attractive ablation resistance under laser ablation, with only shallow ablation pit developing after 15 s irradiation.

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