欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
以常规和纳米团聚体ZrO2—7％YzO3（质量分数）陶瓷粉为原料，采用等离子喷涂工艺在TiAl合金表面制备热障涂层；用扫描电镜和显微硬度计分析了涂层形貌、显微结构及显微硬度，并对涂层的摩擦学特性及抗高温氧化性能进行了研究。结果表明：常规陶瓷涂层呈典型的层状堆积特征；纳米结构涂层呈纳米颗粒完全熔化后重结晶得到的基体相和未完全熔化的纳米颗粒嵌入组成的两相结构；纳米结构涂层的表面硬度较高为1267．6HV，摩擦因数较低为0．8，850℃氧化100h的质量增加仅为2．64mg·cm^-2。
英文摘要：
The thermal barrier coatings （TBCs） were prepared on TiA1 alloy surface by plasma spraying using conventional and nanostructure agglomerates ZrO2-7wt% Y2O3 ceramics powders as raw materials. The morphology, microstructure and microhardness of the coatings were investigated by means of scanning electron microscopy and microhardness tester. The tribological propereies and high-temperature oxidation resistance of the coatings were analyzed. The results show that the conventional ceramic coatings had a typical lamellar stacking characteristics. The nanostructure coatings exhibited two-phase structure, including the matrix phase recrystallized after nano particles completely melting and the embedded phase with partial melting nano particles. The surface hardness of nanostructure coating was 1 267. 6 HV, and the friction coefficient was 0. 8. The mass gain of the coating after oxidation at 850℃ for 100 h was 2. 64 mg·cm^-2.
同期刊论文项目
同项目期刊论文
期刊信息
位置：