OXIDATION BEHAVIOR OF LASER CLADDED NI-SI-TI-C COATINGS AT 1100 °C
Waspaloy is a typical Ni-based superalloy that widely used for flue gas turbine blades, and its strengthening phase is Ni3(Al, ti). Laser cladding is one of the most effective methods for repairing damaged gas turbine blades. TiC particulate reinforced Ni3(Si, ti) intermetallic matrix composites (IMC) were laser cladded on Waspaloy using Ni-Si-Ti-C powder. The oxidation tests were performed at 1100 °C for 48 h and 95 h in air. The specimens before and after oxidation tests were studied using scanning electron microscopy (SEM), X-ray diffraction (XRD), and electron probe microanalysis (EPMA). Based on SEM and XRD results, the mechanisms of oxidation for the coatings were discussed.
Jianbin Zhang Yaoning Sun Ding Fan Zefeng Liang
State Key Lab. of Gansu Advanced Non-ferrous Metal Materials, Lanzhou University of Technology, Lanzhou 730050, China
国际会议
第三届太平洋国际激光与光学应用会议(PICALO 2008)
北京
英文
885-889
2008-04-16（万方平台首次上网日期，不代表论文的发表时间）