用电化学方法和表面分析技术对铝青铜的脱成份腐蚀行为进行研究.结果表明,铝青铜系合金中亚稳态的β相与α相基体相比,具有明显的优先腐蚀倾向,这主要是亚稳的β相组织的含Al量高于α相造成的.在阳极活性溶解区,由于β相中的Al元素溶解造成合金表面产生了点蚀坑,在阳极活化-钝化转化区β相中的Al元素大量溶解,β相腐蚀严重.β相溶解电位正移接近α相溶解电位,α相开始发生腐蚀,在极限电流区,材料表面α相成为富铝相(即阳极区),也发生严重的脱铝腐蚀,α相和β相中的其它合金元素也发生腐蚀脱落.
参考文献
| [1] | Ateya B G .Corrosion of α Al - bronze in saline water[J].Journal of the Electrochemical Society,1994,14(01):71. |
| [2] | Lorimer G W;Hasan F;Iqbal J .Observation of microstructure and corrosion behavior of some aluminum bronzes[J].British Corrosion Journal,1986,21(04):244. |
| [3] | Ateya B G;Ashour E A;Sayed S M .Stress corrosion behavior of α - aluminum bronze in saline water[J].Corrosion,1994,50(01):20. |
| [4] | Brunoro G;Laguzzi G;Luvidi L .Corrosion evaluation of artificially aged 6 wt% tin bronze[J].British Corrosion Journal,2001,36(03):227. |
| [5] | Pryor M J;Fister J C .The mechanism of dealloying of copper solid solutions and intermetallic phases[J].Journal of the Electrochemical Society,1984,131(06):1230. |
| [6] | A. Al-Hashem;P-G- Caceres;W.T. Riad .Cavitation Corrosion Behavior of Cast Nickel-Aluminum Bronze in Seawater[J].Corrosion: The Journal of Science and Engineering,1995(5):331-342. |
| [7] | 徐海波;付洪田;赵广宇 等.铜阳极活性区溶解机制的电化学研究[J].中国腐蚀与防护学报,1999,19(01):27. |
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