材料研究学报  2004, Vol. 18 Issue (3): 246-250

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三元青铜/环境界面上物质转移的化学行为

王菊琳;许淳淳;吕国诚

王菊琳北京化工大学 100029

Chemical behavior of mass transfer at the bronze/environment interface

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王菊琳北京化工大学 100029

王菊琳; 许淳淳; 吕国诚 . 三元青铜/环境界面上物质转移的化学行为[J]. 材料研究学报, 2004, 18(3): 246-250.

摘要 参考文献 相关文章 Metrics 全文: PDF(1649 KB)   摘要: 用模拟闭塞电池法(O.C.) 研究了青铜在模拟环境介质0.028 mol$\cdot$L$^{-1}$ NaCl + 0.01 mol$\cdot$L$^{-1}$ Na$_{2}$SO$_{4}$ + 0.016 mol$\cdot$L$^{-1}$NaHCO$_{3}$ 中的局部腐蚀孔内或裂纹内的化学变化. 通电32 h后闭塞区内溶液的pH值由7.00降至5.02, 与此同时Cl$^{-}$和SO$^{2-}_{4}$向闭塞区内迁移, 其浓集倍数分别是6.31和2.93; 测定了闭塞区内外Cu、Sn、Pb金属离子的浓度, 据此计算出溶解因子$f_{\rm Sn/Cu}$小于1, $f_{\rm Pb/Cu}$大于1, 表明青铜中各元素选择性腐蚀的顺序为Pb$>$Cu$>$Sn, 腐蚀速度Pb$>$Cu$>$Sn; 用XRD分析了腐蚀产物的组成, 解释了青铜文物表面腐蚀产物的分层现象, 即从里到外为CuCl, CuCl和Cu$_{2}$O, Cu的二价化合物. 关键词 ： 金属材料,  青铜,  环境,  溶解因子,  XRD     Abstract：A simulated occluded cell (O.C.) was used on the study of chemical changes in the local corrosion pits or crevices of archaeological bronze in simulated environment medium (0.028 mol$\cdot$L$^{-1}$ NaCl + 0.01 mol$\cdot$L$^{-1}$ Na$_{2}$SO$_{4}$ + 0.016 mol$\cdot$L$^{-1}$ NaHCO$_{3}$). It is found that the pH value decreases from 7.00 to 5.02 as anodic current passes the cell for 32 hours, meanwhile Cl$^{-}$ and SO$^{2-}_{4}$ migrate into the O.C. and their concentrate rate reachs 6.31 and 2.93, respectively. The metallic ion concentrations of Cu, Sn, and Pb in the O.C. and bulk solution were measured which were used to calculate the dissolution factors, $f_{\rm Sn/Cu}$ and $f_{\rm Pb/Cu}$. The results of $f_{\rm Sn/Cu}<$1 and $f_{\rm Pb/Cu}>$1 indicate that the selective dissolution order and corrosion rates are Pb$>$Cu$>$Sn. The composition of corrosion products was analyzed and how the products are layered on bronze surface is explained. The corrosion products from inner to outer are CuCl, CuCl and Cu$_{2}$O, cupric compounds respectively. Key words： metallic materials    bronze    environment    dissolution factor    XRD 收稿日期: 2004-07-19      ZTFLH:  TG174   服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 王菊琳 许淳淳 吕国诚 44.8K 链接本文: https://www.cjmr.org/CN/Y2004/V18/I3/246 1 Yoichiro Ichikawa,Yasumasa Akagawa,Hirosama Nikai and Hiromichi Tsuru,Tissue compatibility and stability of a new zirconia ceramic in vivo,The Journal of Pros- thetic Dentistry,68(2),322(1992) 2 WANG Dalin,LIU Ling,Review on application for dental ceramics,Foreign Medicine Sciences:Fascicule of Biomed- ical Engineering,20(2),97(1997) (汪大林，刘玲，牙科陶瓷材料应用研究现状，国外医学(生物医学工程分册)，20(2)，97(1997)) 3 R.H.J.Hannink,P.M.Kelly,B.C.Muddle,Transformation toughening in zirconia-containing ceramics,Journal of American Ceramic Society,83(2),461(2000) 4 Massimiliano Guazzato,Kaarel Proos,Linda Quach and Michael Vincent Swain,Strength,reliability and mode of fracture of bilayered porcelain/zirconia(Y-TZP)dental ceramics,Biomateriais,25(20),5045(2004) 5 AndréR.Studart,Frank Filser,Peter Kocher and Ludwig J.Gauckler,Fatigue of zirconia under cyclic loading in water and its implications for the design of dental bridges, Dental Materials,23(1),106(2007) 6 Harry P.Papanagiotou,Steven M.Morgano,Russell A. 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