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Heavy Haul Railway Thermit Welding Joints5p.- Aiming to the study of inclusion defects of 75 kg/m rail thermit
welding joints, a defect sample had been knocked apart to have a clear scanning by SEM on its feature section,while EDS analysis of the typical impurities on the surface had also been carried.
300
panmeirong 发布于3415天之前
激光熔覆含SiCp添加物的CoSiC涂层的组织与性能4p.- 利用 5 kW 连续波 CO2激光器在 16M n 钢基材表面对预置的添加 20vol% SiCP的 Co 基合金粉末进行激光熔覆得到Co基SiC合金涂层(Co SiC)。研究了合金涂层的组织形貌及相结构, 并与激光熔覆钴基合金涂层(Co55)进行了显微镜硬度及滑动磨损性能的对比试验。
200
panmeirong 发布于3418天之前
The Formation of Free Carbon and Higher Partial Pressure9p.- Temperature is an important parameter for both systems,the optimum of which is essential to obtaining high purity silicon carbide,hydrogen prevents the formation of free carbon and higher partial pressure is benefitial for high purity of SiC product.
100
liting 发布于3424天之前