磁控溅射法制备碳/碳复合材料 SiC/MoSi2-ZrB2 涂层的结构及抗氧化性能研究

Microstructure and Anti-oxidation Properties of SiC/MoSi2-ZrB2 Coating for Carbon/ Carbon Composites Prepared by Magnetron Sputtering

摘要:

通过磁控溅射法在碳/碳复合材料表面成功制得了SiC/MoSi2-ZrB2陶瓷涂层并对结构及其在高温有氧环境中的抗氧化性能进行了研究。结果表明制备的SiC/MoSi2-ZrB2陶瓷涂层呈柱状晶结构且均匀性良好，其在1273K和1773K的有氧环境中氧化60min失重率分别是5.6×10-2 g/cm2 和 6.3×10-2 g/cm2。

Abstract:

A SiC/MoSi2-ZrB2 ceramic coating was prepared by a magnetron sputtering method on carbon/carbon composites to protect it against oxidation. The microstructure of the coating was investigated, and its oxidation behavior at 1273K and 1773 K in air was also studied. The as-received coating exhibited outstanding uniformity in thickness and presented columnar structure. The coated C/C composites performed a superior oxidation resistance, and the weight loss of the samples after oxidation at 1273K and 1773 K for 60min in oxygen containing environment was 5.6×10-2 g/cm2 and 6.3×10-2 g/cm2 , respectively.