摘要
用焊接热模拟、Ｘ－射线衍射、电化学测试等技术对喷瓷管道焊接热影响区的耐蚀性进行了研究。结果表明，焊接热循环改变了瓷层的相结构，温度低于１２００℃时瓷层相结构主要为玻璃态，有少量晶相Ｎａ２ＭｏＯ４（ＭｏＯ３）ｙ析出，峰温为１３５０℃时瓷层全部转变为玻璃态。随峰值温度的改变，瓷层的耐蚀性发生变化，峰温１３５０℃时耐蚀性最好，１２００℃时耐蚀性最差。
Abstract The corrosion resistance of heat affected zone of procelain sprayed pipe was
investigated by XRD, welding simulation and electrochemical techniques. The results showed the
structure of enamel coating at 1 350 ℃ was examined as full vitrescence,while the structure after
cyclic heating at low peak temperature was mainly vitrescence together with Na 2MoO 4 (MoO 3) y
crystalline phase.
出处
《材料保护》
CAS
CSCD
北大核心
1999年第3期15-16,共2页
Materials Protection
基金
山东省自然科学基金
