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NiCr/Cr_3C_2-BaF_2·CaF_2高温自润滑耐磨涂层的制备与摩擦磨损特性
黄传兵; 杜令忠; 张伟刚
2009
Source Publication摩擦学学报
Issue01Pages:68-74
Abstract采用加压氢气还原和固相合金化技术,以BaF2.CaF2共晶、Cr3C2颗粒为核心,制备了NiCr合金包覆的NiCr/Cr3C2-BaF2.CaF2复合粉末,采用大气等离子喷涂技术制备相应涂层.采用扫描电子显微镜、X射线衍射和SRV摩擦磨损试验机等分析测试技术,研究了涂层组成、结构以及从室温到500℃涂层的摩擦磨损性能.研究结果表明:研制的NiCr/Cr3C2-BaF2.CaF2复合涂层是一种性能优良的高温自润滑耐磨涂层,表面包覆的致密NiCr层抑制了喷涂过程中颗粒的氧化、脱碳和烧蚀,涂层的显微硬度和结合强度较高;涂层在室温下的摩擦系数为0.74±0.02,随温度升高摩擦系数逐渐降低,500℃时降低为0.38±0.03,涂层和对偶球Si3N4的磨损率与室温相比显著下降.摩擦机理研究发现,高温下BaF2.CaF2共晶软化,导致涂层剪切强度比室温时明显变低,在摩擦表面形成了连续的BaF2.CaF2润滑膜.
Keyword包覆粉末 等离子喷涂 Nicr/cr3c2-baf2.caf2涂层 摩擦磨损性能
Indexed ByCSCD
CSCD IDCSCD:3523304
Citation statistics
Cited Times:9[CSCD]   [CSCD Record]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/9967
Collection研究所(批量导入)
Recommended Citation
GB/T 7714
黄传兵,杜令忠,张伟刚. NiCr/Cr_3C_2-BaF_2·CaF_2高温自润滑耐磨涂层的制备与摩擦磨损特性[J]. 摩擦学学报,2009(01):68-74.
APA 黄传兵,杜令忠,&张伟刚.(2009).NiCr/Cr_3C_2-BaF_2·CaF_2高温自润滑耐磨涂层的制备与摩擦磨损特性.摩擦学学报(01),68-74.
MLA 黄传兵,et al."NiCr/Cr_3C_2-BaF_2·CaF_2高温自润滑耐磨涂层的制备与摩擦磨损特性".摩擦学学报 .01(2009):68-74.
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