搪瓷设备鳞爆氢源探析  

Study on source of hydrogen for enamel burst cracking

作　　者：庞然[1] 左禹[1] 陈咏梅[1] 万平玉[1] 刘小光[1] 

机构地区：[1]北京化工大学,北京100029

出　　处：《现代化工》2007年第z1期301-303,共3页Modern Chemical Industry

基　　金：北京市教育委员会重点学科建设项目(XK100100643)

摘　　要：针对引起夹层式搪瓷反应釜在较高温度下发生鳞爆的原因提出如下假设:碳钢壁基体与夹层中的水发生反应产生氢原子,氢渗透至铁基体内,达到饱和之后在釉层和碳钢之间的界面上聚集,压力增大导致搪瓷鳞爆。通过碳钢和水在较高温度下反应生成氢气可能性的热力学计算,碳钢片在不同水热条件下阴极极化曲线测试以及水热条件下放置一段时间后中空碳钢试件中氢含量的测试结果证实了上述推测。A piece of supposal was put forward based on the reason that burst cracking occurred at higher temperature for jacketed enamel still.The basal body of the wall of carbon steel reacted with water in the inter layer,which generated hydrogen atom.Then hydrogen infiltrated through inner of the iron basal body and aggregated on the interface between the enamel layer and the carbon steel after it was being saturated.And then the pressure increased so much that the enamel burst.The above supposal has been proved by the thermodynamic calculation with regard to the possibility of generation of hydrogen through the reaction of carbon steel with water at higher temperature,which did agree with the results of the test of cathode polarization curve of the carbon steel flake at different hydrothermal conditions and the results of hydrogen content test in the test piece of hollow carbon steel at different hydrothermal conditions after deposited for a period of time.

关 键 词：搪瓷 鳞爆 氢气 

分 类 号：TG174.452[金属学及工艺—金属表面处理]