CAJ | 학술논문

采用腐蚀失重法与显微镜技术，研究了电气化铁路接触网热浸镀锌部件材料在模拟典型大气环境(海洋环境、工业环境、城市环境)介质中的腐蚀及其形貌。结果表明，热浸镀锌材料在模拟城市大气环境介质中的腐蚀最为严重，工业环境次之，海洋环境腐蚀最轻。二次加工与成型会引起镀锌层局部破损致使基材局部暴露与镀锌层形成电偶对，会加重热浸镀锌部件的腐蚀，且破损面积越大腐蚀越严重。同样，热浸镀锌部件与不锈钢紧固件耦接会形成电偶腐蚀，也会加重热浸镀锌部件的腐蚀。建议针对电气化铁路各段不同的大气环境，选择不同的接触网零部件材料、或者采用相应的防腐措施。在接触网构件加工和装配过程中，建议改进加工工艺程序，避免热浸镀锌部件的二次加工或者成型；建议采用绝缘措施，以达到热浸镀锌部件与不锈钢紧固件之间的绝缘耦接，避免电偶腐蚀发生。
채용부식실중법여현미경기술，연구료전기화철로접촉망열침도자부건재료재모의전형대기배경(해양배경、공업배경、성시배경)개질중적부식급기형모。결과표명，열침도자재료재모의성시대기배경개질중적부식최위엄중，공업배경차지，해양배경부식최경。이차가공여성형회인기도자층국부파손치사기재국부폭로여도자층형성전우대，회가중열침도자부건적부식，차파손면적월대부식월엄중。동양，열침도자부건여불수강긴고건우접회형성전우부식，야회가중열침도자부건적부식。건의침대전기화철로각단불동적대기배경，선택불동적접촉망령부건재료、혹자채용상응적방부조시。재접촉망구건가공화장배과정중，건의개진가공공예정서，피면열침도자부건적이차가공혹자성형；건의채용절연조시，이체도열침도자부건여불수강긴고건지간적절연우접，피면전우부식발생。
In this work, the corrosion and morphology of galvanized carbon steel parts, which is used as the fitting material of overhead contact system in the media simulating atmospheric environments (marine environment, industry environment, urban environment) have been studied by weight-loss method in conjunction with Microscopy technique. The results show that the corrosion rate of galvanized carbon steel in the medium simulating urban atmospheric environment is highest, higher in the medium simulating industry atmospheric environment and lower in the medium simulating marine atmospheric environment. Secondary processing and formation caused local damages of galvanized layer, resulting in serious corrosion of galvanized carbon steel parts. The larger the damage area is, the more serious the corrosion is. Similarly, galvanized carbon steel parts fixed with threaded bolt made of stainless steel would form a galvanic corrosion, which also can aggravate the corrosion of galvanized carbon steel parts. It was suggested different materials or corrosion protection measures should be used for the fitting of overhead contact system in different atmospheric environment. Meanwhile, the secondary processing of galvanized carbon steel parts should be avoided. Insulation measures should be taken to avoid galvanized carbon steel parts to be directly fixed with threaded bolt made of stainless steel.