牛少鹏,邓畅光,张吉阜,周宏明,王斌.超音速火焰喷涂碳化铬基涂层的高温摩擦磨损性能研究[J].表面技术,2012,(6):10-13,17.
NIU Shao-peng,NIU Shao-peng,NIU Shao-peng,NIU Shao-peng,NIU Shao-peng.Study on High Temperature Friction and Wear Performance of Chromium Carbide Based Coatings Sprayed by HVOF[J].Surface Technology,2012,(6):10-13,17
超音速火焰喷涂碳化铬基涂层的高温摩擦磨损性能研究
Study on High Temperature Friction and Wear Performance of Chromium Carbide Based Coatings Sprayed by HVOF
投稿时间:2012-08-03  修订日期:2012-12-20
DOI:
中文关键词:  超音速火焰喷涂  碳化铬基涂层  BaF2·CaF2 共晶  自润滑  高温摩擦磨损
英文关键词:HVOF  chromium carbide based coatings  BaF2 ·CaF2 eutectic  self-lubricating  high temperature friction and wear
基金项目:
作者单位
牛少鹏 中南大学材料科学与工程学院, 长沙410083 
邓畅光 广州有色金属研究院, 广州510651 
张吉阜 广州有色金属研究院, 广州510651 
周宏明 中南大学材料科学与工程学院, 长沙410083 
王斌 中南大学材料科学与工程学院, 长沙410083 
AuthorInstitution
NIU Shao-peng School of Materials Science and Engineering, Central South University, Changsha 410083, China 
NIU Shao-peng Guangzhou Research Institute of Non-ferrous Metals, Guangzhou 510651, China 
NIU Shao-peng Guangzhou Research Institute of Non-ferrous Metals, Guangzhou 510651, China 
NIU Shao-peng School of Materials Science and Engineering, Central South University, Changsha 410083, China 
NIU Shao-peng School of Materials Science and Engineering, Central South University, Changsha 410083, China 
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中文摘要:
      利用超音速火焰喷涂方法制备出NiCr/ Cr3C2 和NiCr/ Cr3C2-BaF2 ·CaF2 两种涂层,?炝肆街滞坎愕淖橹?测定了两种涂层在650 ℃和800 ℃下的摩擦磨损性能,进而分析了BaF2 ·CaF2 共晶相对涂层的润滑减摩作用,讨论了两种涂层的适用范围。结果表明,NiCr/ Cr3C2-BaF2 ·CaF2 涂层在800 ℃展现出优异的耐磨自润滑效果,摩擦系数最低,仅为0. 2644,磨损率也较小,为5. 88×10-6 mm3 / (N·m);而NiCr/ Cr3C2 涂层在650℃的磨损率更小,仅为3. 66×10-6 mm3 / ( N·m)。两种涂层在不同温度下表现出不同的摩擦磨损机制:NiCr/Cr3C2 涂层在650 ℃和800 ℃均表现为典型的粘着磨损,但在650 ℃时有疲劳迹象,在800 ℃时则发生严重塑性变形;NiCr/ Cr3C2-BaF2·CaF2 涂层在650 ℃以磨粒磨损为主,在800 ℃时,由于氟化物润滑膜的作用,仅发生轻微的粘着剥落。
英文摘要:
      Two coatings, NiCr/ Cr3 C2 and NiCr/ Cr3 C2 -BaF2·CaF2 , were prepared by means of high velocity oxy-fuel spraying (HVOF). After that, by observing the microstructure and detecting the friction wear performances of the two coatings, the lubricating and friction-lessen role which BaF2·CaF2 eutectic played in the coating were analyzed. In addition, the applicable range of two coatings was discussed as well based on the experimental result. It is found that NiCr/ Cr3 C2 -BaF2·CaF2 coating which got the lowest friction coefficient (0. 2644) and lower wear rate (5. 88×10-6 mm3·N-1·m-1 ), possessed excellent wear-resistant and self-lubricating performances at 800 ℃; The most antiwear coating is NiCr/ Cr3 C2 , which had the even lower wear rate, only 3. 66×10-6 mm3 / N·m. The coatings behaved differently under two temperatures on friction and wear mechanisms. Typical adhesive wear dominated in NiCr/ Cr3 C2 coating under both temperatures. Besides, the coating was found some signs of fatigue at 650 ℃, while severe plastic flow at 800 ℃. In contrast, the main abrasion mode of NiCr/ Cr3 C2 -BaF2·CaF2 coating was the micro-cutting wear at 650 and only some minor adhesive spalling occurred on the surface at 800 ℃ due to the function of the fluoride film.
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