摘要
在射流冲蚀装置中研究了等离子渗氮Ti合金基体上的TiN涂层在砂浆介质中的冲蚀行为。砂浆冲击速度为 6 .4～ 1 5.2m s。结果表明 :在低冲击速度下 ,TiN涂层具有很高的抗冲蚀性能。随着砂浆速度的提高 ,TiN涂层被砂浆击穿甚至开裂 ,对基体的保护作用降低。涂层穿孔后 ,位于冲蚀区中部显露的渗氮基体形成塑性形变条片 ,边缘区则由于砂浆对基体的切削作用而被冲蚀。
The slurry erosion behavior of TiN coatings on plasma-nitrided Ti alloy substrate in aqueous silica slurry has been investigated using a jet in slit rig. Erosion tests were performed with slurry jet velocities between 6.4 and 15 2 m·s -1 . The results indicated that the TiN coatings deposited on nitrided Ti alloy substrate presented high slurry erosion resistance. With increasing slurry velocity, perforation and fragmentation of the hard TiN coatings occurred and the protection effect to the substrates of the coating layer reduced. After coating perforation, the surfaces of the substrates were eroded by flaking deformation on the center section of the erosion scars while cutting occurred at the outer regions of the erosion scars.
出处
《材料热处理学报》
EI
CAS
CSCD
北大核心
2001年第3期79-82,共4页
Transactions of Materials and Heat Treatment
