国防科技大学新型陶瓷纤维及其复合材料重点实验室,国防科技大学新型陶瓷纤维及其复合材料重点实验室,国防科技大学新型陶瓷纤维及其复合材料重点实验室,国防科技大学新型陶瓷纤维及其复合材料重点实验室
TB332
Science and Technology on Advanced Ceramic Fibres and Composites Laboratory,National University of Defense Technology,Science and Technology on Advanced Ceramic Fibres and Composites Laboratory,National University of Defense Technology,Science and Technology on Advanced Ceramic Fibres and Composites Laboratory,National University of Defense Technology,Science and Technology on Advanced Ceramic Fibres and Composites Laboratory,National University of Defense Technology
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本文通过在石墨基体涂覆前驱体料浆,在高温下烧结后得到TaC涂层。通过XRD和SEM对涂层形貌与结构进行表征,TaC涂层由平均尺寸为12μm的致密颗粒组成。涂层晶粒生长方式为自由取向生长,这种生长模式使得裂纹在扩展时会被钉扎在晶界连接处,而不会贯穿整个涂层。TaC涂层的硬度和弹性模量分别为15.35GPa 和 195.1GPa。
The TaC coatings were prepared by precursor slurry application and subsequent sintering processes on graphite substrate. The prepared coating were investigated with their phase composition and morphology, by means of XRD and SEM. The coating consisted of single-phase TaC and had a dense granular structure containing grain with the mean size of 12μm. The coating had an isotropic granular structure, which make the crack tip would be pinned at a grain boundary junction and would not fully penetrate the coating. The hardness and the plastic modulus of the coating are 15.35GPa and 195.1GPa, respectively.
引用本文
沈小松,王松,李伟,张健.湿粉末法制备TaC涂层[J].稀有金属材料与工程,2018,47(S2):13~16.[Xiaosong Shen, Song Wang, Wei Li, Jian Zhang. Preparation of TaC coatings via wet powder process[J]. Rare Metal Materials and Engineering,2018,47(S2):13~16.]
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- 收稿日期:2017-12-14
- 最后修改日期:2017-12-14
- 录用日期:2018-02-01
- 在线发布日期: 2018-11-01