摘要
Zn合金在耐磨零件方面应用广泛。本文利用SEM、EDS、A-200布洛维硬度计、JR-3激光导热仪、UMT-3摩擦试验机等试验手段,研究铁元素添加量对铸态ZA27合金摩擦磨损性能的影响,并探讨其磨损机理。结果表明,随着铁元素含量的增加,合金的硬度不断提高,导热系数降低。摩擦因数、质量磨损均随铁元素含量的增加呈现先升高后降低的趋势。摩擦过程中,合金摩擦表面层发生一系列的物理化学变化,逐渐形成摩擦层。铁含量为1.5%时,锌合金具有较好的耐摩擦磨损性能。
The application of Zn alloy in wear parts is very extensive. The hardness, thermal coefficient, friction wear properties of caststate ZA27 alloy with different Fe contents were investigated using A-200 Brinell sclerometer, JR-3 Laser thermal conductivity meter, UMT-3 friction testing machine, scanning electron microscope （SEM） and energy dispersive spectrometer （EDS）. The natures and mechanism of these characteristics were also analyzed. The results indicate that the hardness value of ZA27 alloy improves continuously, the thermal coefficient becomes lower, whereas, the friction coefficient and quality lose increase firstly then decrease with the increasing of iron content. During the friction process, the friction surface layer occurs a series of physical and chemical change, and the frictional layer gradually forms. When the content of Fe is 1.5%, ZA27 alloy has good comprehensive property.
出处
《粉末冶金材料科学与工程》
EI
北大核心
2012年第4期508-513,共6页
Materials Science and Engineering of Powder Metallurgy
基金
重点实验室资助课题
关键词
ZA27合金
硬度
导热系数
摩擦磨损性能
ZA27 alloy
hardness
thermal coefficient
friction and wear properties
