韓 薇2
( 1. 沈陽造幣廠， 沈陽 110042；
2. 中國科學(xué)院金屬研究所 金屬腐蝕與防護(hù)國家重點(diǎn)實(shí)驗(yàn)室，
沈陽 110016)
摘 要: 通過氯化鈉鹽霧腐蝕實(shí)驗(yàn)，結(jié)合X射線衍射(XRD)和電子探針(EPMA)分析， 研究了銅合金及其復(fù)合材料在氯化鈉鹽霧中的腐蝕行為。結(jié)果表明： 在實(shí)驗(yàn)初期材料的腐蝕速度隨時(shí)間的延長而降低， 約96h以后腐蝕速度基本不再變化； BZn15-17與純鎳復(fù)合材料的耐蝕性最好；實(shí)驗(yàn)初期和后期的腐蝕產(chǎn)物組成基本相同， 2種白銅合金的主要腐蝕產(chǎn)物都是CuCl2·2H2O, 黃銅合金的主要腐蝕產(chǎn)物為CuCl， 其次為CuCl2·2H2O和(CuZn)2(OH)3Cl；腐蝕形貌變化較大。
關(guān)鍵字: 銅合金； 復(fù)合材料； 腐蝕行為； 氯化鈉鹽霧
GOU Jiu-bin1, YU Guo-cai2, LUO Bao-hua1, HAN Wei2
（ 1. Shenyang Mint, Shenyang 110042, China;
2. State Key Laboratory for Corrosion and Protection of Metal,
Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China）
Abstract: The corrosion behavior of copper alloys and its composites was studied by means of NaCl spray test, with the analysis of XRD and EPMA. It is found that the average corrosion rates of the tested materials in the initial stage decrease with increasing time, and it keep approximately constant after 96h. The composition of corrosion products is basically same during the whole experimental period, whereas the morphology of corrosion products changes. The main corrosion product of B25 and BZn15-17 is CuCl2·2H2O. And the main corrosion product of HSn72-1-1 is CuCl， subordination is CuCl2·2H2O and (CuZn)2(OH)3 Cl.
Key words: copper alloys; composite materials; corrosion behavior; NaCl salt spray
