Friction and wear behavior of Cu–Cr–Zr alloy lubricated with acid rain. Issue 3 (8th April 2014)

• Record Type: Journal Article
• Authors: Jia, Zhengfeng; Su, Yuchang; Xia, Yanqiu; Shao, Xin; Song, Yanxin; Ni, Junjie
• Is Part Of: Industrial lubrication and tribology. Volume 66:Issue 3(2014)
• Page Start: 473
• Page End: 480
• Publication Date: 2014-04-08
• Subjects: Wear -- Friction -- Acid rain -- Cu–Cr–Zr alloy -- XPS; Lubrication and lubricants -- Periodicals; Tribology -- Periodicals; 621.89
• DOI: 10.1108/ilt-02-2012-0015
• Languages: English
• ISSNs: 0036-8792

Abstract

Abstract : Purpose: – The purpose of this paper is to investigate the tribological properties of a Cu–Cr–Zr alloy lubricated with acid rain. Design/methodology/approach: – The Cu 2.5 weight per cent–Cr-0.08 weight per cent–Zr alloy was produced in a vacuum induction furnace. The H2 SO4 + H2 O, HNO3 + H2 O and H2 SO4 + HNO3 + H2 O mixtures with pH of 5 were used as acid rain. Pure water was used as rain. The friction and wear properties of Cu–Cr–Zr alloy/American Iron and Steel Institute (AISI) 52100 steel couples lubricated with acid rain were investigated using a reciprocating ball-on-disc friction and wear tester (Optimol SRV, Germany). For investigating the properties of the alloy and wear scars, scanning electron microscopy, X-ray diffraction microscopy, energy dispersive X-ray spectrum, transmission electron microscopy and X-ray photoelectron spectroscope were used. Findings: – The wear rate of the Cu–Cr–Zr alloy lubricated with H2 O containing HNO3 (pH = 5) was larger than pure water under the same conditions. The tribofilms containing Cu, Cr, Zr, S and N formed during sliding with acid rain, but corrosion also took place at that time. Originality/value: – The wear rate of the Cu–Cr–Zr alloy lubricated with H2 O containing HNO3 (pH = 5) was larger than pure water, the wear and corrosion took place during sliding. As the trolley wires, the life of the Cu–Cr–Zr alloy was influenced by the environment.