%0 Journal Article
%T THE NATURE OF SULFIDE SCALES ON TWO-PHASE Fe-Cu ALLOYS<br>两相Fe—Cu合金铁硫化腐蚀特性
%A 牛焱
%A 吴维tao
%J 腐蚀科学与防护技术
%D 1999
%I 
%X The sulfidation of two-phase Fe-Cu alloys containing 25, 50 and 75 wt % cop-per has been studied at 500 and 600 C under sulfur pressures higher than those for the disso- ciation of iron and copper sulfides. A special attention has been devoted to the examination of the microstructure of the scales. Fe-25Cu sulfidized at the slowest rates, whereas Fe-50Cu corroded more rapidly than the other two alloys. The scales contained an outer layer of a mixture of two Cu-Fe double sulfides (Cu,FeS, and CuFeS,), plus an inner region of sulfida- tion concerning mainly the Cu-rich P-phase and also of some Fe-rich a-phase forming Cu,FeS, plus large voids, possibly due to outward diffusion of metal cations. The depth of this zone increased with temperature and iron content. Moreover, pure copper metal particles formed at the scale/subscale, as whiskers protruding out of the external scale surface. The results obtained are examined with special reference to the two-phase nature of these alloys.
%K sulfidation
%K Fe-Cu alloys
%K two-phase<br>双相合金
%K 硫化
%K 高温
%K 腐蚀
%K Fe－Cu合金
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=AB188D3B70B071C57EB64E395D864ECE&jid=9F6E6EC8BA5BB62698F6640073DDD6E1&aid=6FB4B2DD84E58FF88E45958116006A18&yid=B914830F5B1D1078&vid=708DD6B15D2464E8&iid=0B39A22176CE99FB&sid=8BD23BD67BF01A5C&eid=AA76E167F386B6B3&journal_id=1002-6495&journal_name=腐蚀科学与防护技术&referenced_num=0&reference_num=8