引用本文:张佳平1,王 璐1,杨中元2,陶 凯2,袁福河1,林 锋2.超音速火焰喷涂含氟化物的碳化铬/镍铬涂层结构及性能[J].中国表面工程,2011,24(2):46~50
ZHANG Jia–ping1, WANG Lu1, YANG Zhong–yuan2, TAO Kai2, YUAN Fu–he1, LIN Feng2.Microstructure and Properties of Fluoride Containing Cr3C2/NiCr Coating Sprayed by HVOF Technique[J].China Surface Engineering,2011,24(2):46~50
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超音速火焰喷涂含氟化物的碳化铬/镍铬涂层结构及性能
张佳平1,王 璐1,杨中元2,陶 凯2,袁福河1,林 锋21,2
1. 中航工业沈阳黎明航空发动机(集团)有限责任公司技术中心 冶金所,沈阳110043;2. 北京有色金属研究院 有研粉末新材料有限公司,北京 100095
摘要:
采用超高真空热丝化学气相沉积(HFCVD)系统,以甲烷和氢气为反应气体,在高速钢W18Cr4V基体上利用3种不同的过渡层(WC、Cr、WC/Cr)制备金刚石薄膜。采用场发射扫描电子显微镜(FE–SEM)、X射线衍射仪(XRD)、显微激光拉曼光谱仪(Raman)以及洛氏硬度计对过渡层和金刚石薄膜进行检测分析,研究了不同过渡层对金刚石薄膜形貌质量和附着性能的影响。结果表明,3种过渡层均可以有效减少钢基中Fe对金刚石薄膜的负面影响,提高金刚石的形核率;其中,采用WC/Cr过渡层时膜基间残余应力最小,仅为0.25 Gpa,附着性能最好。
关键词:  超音速火焰喷涂  碳化铬/镍铬涂层  刷式密封  自润滑
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基金项目:
Microstructure and Properties of Fluoride Containing Cr3C2/NiCr Coating Sprayed by HVOF Technique
ZHANG Jia–ping1, WANG Lu1, YANG Zhong–yuan2, TAO Kai2, YUAN Fu–he1, LIN Feng21,2
1. Technical Centre of AVIC Shenyang Liming Aero–engine (Group) Corporation LTD, Shenyang 110043;2. General Research Institute For Nonferrous Materials, Beijing 100095
Abstract:
Barium and calcium fluorides containing nickel chrome/chrome carbide coatings were sprayed by high velocity oxygen fuel technique to develop self–lubricating and wear resistant coatings for brush sealing system of aero–engines. The microstructure of the coating was examined and its tensile bond strength, thermal shock and wear resistance, microhardness properties were tested and discussed. The result shows that the coating properties of Barium and calcium fluorides containing nickel chrome/chrome carbide coatings sprayed by high velocity oxygen fuel technique are excellent,which can be as a seal coating for brush sealing system.
Key words:  high velocity oxygen fuel  nickel chrome/chrome carbide coating  brush seal  self–lubricating
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