恒电位脉冲法检测汽轮机转子钢的敏化  

Potentiostatic Pulse Test for Detecting Sensitization of Steam Turbine Rotor Stainless Steel

作　　者：张胜寒[1] 丁兆勇[1] 王秀梅[2] 

机构地区：[1]华北电力大学环境科学与工程学院,保定071003 [2]华北电力大学机械工程学院,保定071003

出　　处：《汽轮机技术》2007年第4期312-313,共2页Turbine Technology

摘　　要：采用恒电位脉冲技术(Potentiostatic Pulse Test,简称PPT)对转子钢的敏化进行检测,并与传统的动电位再活化(Electrochemical Polarization Reactivation,简称EPR)法进行了比较。由于转子钢敏化度有的较高,经过双环EPR实验后在电极表面发生较严重的孔蚀,这必然使得EPR法测定不准确,而经恒电位脉冲法实验后的同一电极则未发现明显的孔蚀现象,从而保证了检测方法的准确性。并且恒电位脉冲法具有测定速度快、对试样损伤小,测定结果更准确等特点。Use potentiostatic pulse technique to detect the sensitization of steam turbine rotor stainless steel, and do a compare with EPR technique. Due to many rotor stainless steels are highly sensitized, pitting may happen when adopting EPR experiment, unavoidably that the outcome is inaccurate. So by PPT, we can get perfect results.

关 键 词：汽轮机转子 恒电位脉冲技术 动电位再活化法 敏化 转子钢 

分 类 号：TK263.61[动力工程及工程热物理—动力机械及工程]