%0 Journal Article
%T Effect of Sn on the Color and Tarnishing of Cu-Mn-Zn Alloys
%A Yuping ZHANG
%A Jinxu ZHANG
%A Jiansheng WU
%A <br>JianshengWU
%A YupingZHANG
%A JinxuZHANG
%J 材料科学技术学报
%D 2003
%I 
%X The effect of Sn on the color and tarnishing of Cu-Mn-Zn alloys is investigated quantitatively. Using the CIE LAB color system, color parameters such as L*, a* and V are selected to describe the surface color of atloys while the color difference (AB*) is used to evaluate the color stability. The results show that with the increase of Sn, the color change of Cu-Mn-Zn alloys is greatly reduced and the corrosion resistance in the synthetic sweat is improved dramatically. However, up to 4.4 wt pct Sn does not change the color of Cu-Mn-Zn alloys much. XPS and AES are employed to analyze the tarnished surface. It is proved that a Sn enriched film is formed and Sn takes the form of Sn oxide. This thin and protective oxide film can prevent alloy from further tarnishing.
%K Sn
%K Cu-Mn-Zn alloys
%K Color
%K Tarnishing<br>锡
%K Cu-Mn-Zn合金
%K 色彩稳定性
%K 腐蚀抵抗力
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=84529CA2B2E519AC&jid=324DC3CAB22330DB19158AE0A9B7BFA5&aid=8B498E2DBC56690B99B71C3B0079F7E7&yid=D43C4A19B2EE3C0A&vid=2A8D03AD8076A2E3&iid=0B39A22176CE99FB&sid=3986B25773CB6C30&eid=A020552C37306588&journal_id=1005-0302&journal_name=材料科学技术学报&referenced_num=0&reference_num=15