李海蘭1，劉明朗1， 朱小武1
( 1. 蘭州理工大學(xué) 甘肅省有色金屬新材料省部共建國家重點實驗室， 蘭州 730050；
2. 蘭州理工大學(xué) 機(jī)電工程學(xué)院， 蘭州 730050；
3. 中國科學(xué)院 蘭州化學(xué)物理研究所
固體潤滑國家重點實驗室， 蘭州 730000)
摘 要: 對新型高強(qiáng)度、 高耐磨鋁青銅合金（代號HSWAB）在潤滑條件下的摩擦性能進(jìn)行了分析。結(jié)果表明， HSWAB合金的高耐磨性主要取決于其顯微組織，在潤滑條件下磨損失效形式主要為磨粒磨損與粘著磨損。 由于HSWAB合金基體強(qiáng)度高，強(qiáng)化相呈彌散分布， 在潤滑摩擦過程中形成高強(qiáng)度的骨架和光滑的支撐面， 磨粒細(xì)小、 圓整、 數(shù)量少； 在潤滑及骨架與光滑面的支撐作用下， 粘著磨損不能進(jìn)一步發(fā)展，并且合金在摩擦過程中無氧化與裂紋現(xiàn)象產(chǎn)生。
關(guān)鍵字: 鋁青銅； 摩擦性能； 潤滑條件
WANG Zhi-ping1, LI Hai-lan1,
LIU Ming-lang1, ZHU Xiao-wu1
（ 1. State Key Lab of Gansu New Non-ferrous Metal Materials,Lanzhou University of Science and Technology, Lanzhou 730050, China;
2. College of Mechanic-Electronic Engineering,
Lanzhou University of Science and Technology, Lanzhou 730050, China;
3. State Key Lab of Solid Lubrication, Lanzhou Institute of Chemical Physics,Chinese Academic of Sciences, Lanzhou 730000, China）
Abstract: The friction properties and friction mechanism of a new high strength and wear-resistant aluminum bronze named HSWAB alloy were analyzed in detail under lubrication condition. The results show that the high wearability of HSWAB alloy primarily depends on its microstructure. The major wear mechanisms are attrition wear and adhesive wear when HSWAB alloy against 45# steel under lubrication condition. Because HSWAB alloy has high hardness metal matrix and small dispersion strengthening phases, in lubrication friction, the matrix and some strengthening phases become a high-strength skeleton body and smooth bearing plate, another strengthening phase becomes abrasive particles that are small, near-spherical and their number is small. Because of lubrication oil, supporting effect of skeleton body and smooth bearing plate, the adhesive wear can’t further develop. The oxidization phenomenon and crack initiation on wear surface of HSWAB alloy were not found.
Key words: aluminum bronze; friction performance; lubrication condition
