Elevated temperature oxidation behavior of HVOF sprayed TiB_2 cermet coating
Elevated temperature oxidation behavior of HVOF sprayed TiB_2 cermet coating作者机构:Department of Materials EngineeringFaculty of EngineeringShahid Chamran UniversityAhvazIran
出 版 物:《Transactions of Nonferrous Metals Society of China》 (中国有色金属学报(英文版))
年 卷 期:2010年第20卷第2期
页 面:243-247页
核心收录:
学科分类:080503[工学-材料加工工程] 0806[工学-冶金工程] 08[工学] 0818[工学-地质资源与地质工程] 0815[工学-水利工程] 0805[工学-材料科学与工程(可授工学、理学学位)] 0813[工学-建筑学] 0703[理学-化学] 0814[工学-土木工程] 0702[理学-物理学]
主 题:金属陶瓷涂层 高温氧化行为 TiB2涂层 喷涂技术 超音速 火焰 氧化层厚度 扫描电子显微镜
摘 要:Oxidation behaviors of Ni(Cr)-TiB2 coating deposited by HVOF technique were studied at 800,900 and 1 000℃in air. The microstructures of as-sprayed and oxidized coatings were characterized by X-ray diffractometry(XRD)and scanning electron microscopy(SEM).After oxidation at 800℃,a thin and adherent oxide layer was formed on the surface of the *** increasing exposure temperature,the thickness of the oxide layer increased;and at 1 000℃the oxide layer separated from the *** of the kinetics of oxidation by using the thermogravimetric analysis(TGA)technique shows a parabolic oxidation rate.