精密仪器用合金的耐腐蚀性能分析  

Analysis of Corrosion Resistance Properties of Precision Instruments Alloy

作　　者：李善林[1] 

机构地区：[1]山东英才学院

出　　处：《工具技术》2016年第5期60-62,共3页Tool Engineering

摘　　要：开发具有工程应用价值的Fe-Cr-Ni-Mo系精密仪器用新型合金并制备新型Fe-25Cr-22Ni-3.5Mo-3Ti合金,对合金的物相组成进行分析,进行电化学腐蚀和乙酸盐雾腐蚀试验。结果表明:新型合金由σ相(即(FeNi)x(CrMo)y相)、Ti Ni相组成。与常规Fe-25Cr-22Ni-3.5Mo合金相比,该新型合金的腐蚀电位正移194mV,乙酸盐雾腐蚀10天后的质量损失率减小77%,耐腐蚀性能得到显著改善。In order to develop the engineering application value of Fe - Cr - Ni - Mo department of precision instruments with new type of alloy, the preparation of new Fe -25Cr- 22Ni -3.5Mo -3 Ti alloy are analyzed with phase composition of alloy and the electrochemical corrosion and acetic acid salt spray corrosion test. Results show that the new type of alloy by sigma phase, i. e. , （FeNi）x （CrMo）y phase, the observatory phase composition. Comparing with conventional Fe - 25Cr- 22Ni- 3.5Mo alloy, the corrosion potential of the new type alloy is 194 mV, acetic acid salt spray corrosion mass loss decreases 77% after 10 days,corrosion resistant performance is improved significantly.

关 键 词：Fe-25Cr-22Ni-3.5Mo-3Ti合金 精密仪器 耐腐蚀性能 电化学腐蚀 乙酸盐雾腐蚀 

分 类 号：TG249.2[金属学及工艺—铸造] TH142.2[一般工业技术—材料科学与工程]