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利用失重法、X射线衍射分析、扫描电镜与能谱分析等手段研究了Cu-Zn-Al-Ni-B-Ce合金在自来水和去离子水配置的NaCl(35g/L)+NH4Cl(26.75g/L)腐蚀液中的耐腐蚀性能及其腐蚀行为。结果表明:该合金在溶液中的腐蚀产物均主要为稀土氧化物(Ce4O7)、铜的碱式氯化物(Cu(OH)Cl)和铜氨络合物的水合物(Cu(OH)2NH3.H2O);在去离子水溶液中合金的腐蚀速率为1.60×10-3mm/a,在自来水溶液中的腐蚀速率达到了7.51×10-2mm/a;合金在两种腐蚀液中均有沿晶界腐蚀现象,合金在自来水溶液中的腐蚀产物厚度10~20μm,远大于合金在去离子水中的腐蚀产物厚度1μm左右,且经去离子水溶液腐蚀后的合金表面比经自来水溶液腐蚀后的平滑。
The effects of NaCl (35g / L) + NH4Cl (26.75g) on the performance of Cu-Zn-Al-Ni-B-Ce alloy in tap water and deionized water were investigated by weight loss method, XRD, SEM and EDS. / L) corrosive solution corrosion resistance and corrosion behavior. The results show that the corrosion products of the alloy are mainly rare earth oxides (Ce4O7), basic copper chloride (Cu (OH) Cl) and Cu (OH) 2NH3. H2O). The corrosion rate of the alloy in deionized water solution was 1.60 × 10-3mm / a and the corrosion rate in tap water solution reached 7.51 × 10-2mm / a. The corrosive phenomenon is that the thickness of the corrosion product of the alloy in the tap water solution is 10-20 μm which is much larger than the thickness of the corrosion product of the alloy in the deionized water about 1 μm and the corrosion of the alloy surface by the deionized water solution is smoother than that after the corrosion by the tap water solution.