无机盐溶液中Cr_2O_3涂层磨损机理的研究  

Wear Mechanism of Cr_2O_3 Coating in Inorganic Salt Solutions

作　　者：魏建军[1] 薛群基[1] 

机构地区：[1]中国科学院兰州化学物理研究所固体润滑开放实验室,730000

出　　处：《无机材料学报》1993年第1期105-110,共6页Journal of Inorganic Materials

摘　　要：作者在环-块试验机上考察了 Cr_2O_3 涂层在无机盐溶液中的摩擦磨损性能,并对其磨损表面进行了形貌和组成分析.结果表明,各种无机盐溶液摩擦系数的差异归因于盐溶液在 Cr_2O_3 涂层表面上不同的润湿性,Cr_2O_3 涂层在无机盐溶液中的磨损机理包含磨粒磨损、微观断裂和摩擦化学磨损等几种磨损形式.The friction and wear properties of Cr_2O_3 coating in inorganic salt solutions were studiedby using a block-on-ring tester at ambient condition.The friction coefficient is ranked fromhighest to lowest in the order:NaCl,NaNO_3,Na_2SO_4,Na_2B_2O_7,Na_3PO_4,for Na salt solutions;NaCl,MgCl_2,ZnCl_2,AlCl_3,for chloride salt solutions.The wear volume of the block isranked in descending order as follows:NaCl,Na_2B_2O_7,Na_3PO_4,NaNO_3,Na_2SO_4,for Nasalt solutions;NaCl,AlCl_3,MgCl_2,ZnCl_2,for chloride salt solutions.The optical micrographsand XPS analyses of the worn surfaces indicate that the wear mechanism of Cr_2O_3 coatingin inorganic salt solutions is a combination of several wear modes involving microfracture,tribochemical and abrasive wear.

关 键 词：涂层 无机盐溶液 磨损机理 氧化铬 

分 类 号：TH117.1[机械工程—机械设计及理论]