达克罗涂层的腐蚀动力学行为研究

The corrosion kinetics behavior of Dacromet coating was studied by potentiodynamic scan,galvanostatic charge and fast triangular voltage methods.The corrosion kinetics parameters were calculated and the semiconductor conductivity of the coating was investigated.The superior anticorrosive effect of the coating can be attributed to the multilayer inactivation that greatly increases the breakthrough potential and prolongs the breakdown time.On the other hand,the conductivity of the coating could allow the metal powder within the coating displaying sacrificial protection effect at the expense of anade controllably for steel substrate in salt water environments.The coating formed by substituting boric acid for a part of chromic anhydride in the coating solution,contained more charge carriers and showed more negative corrosion potential,so that the coating still effectively displayd such protection effect even in fresh water.

多相混输技术研究现状及发展趋势

近年来,多相混输技术研究有了较大的进展。本文结合作者进行的研究工作,总结和回顾了这一领域的进展,其中包括:多相混输增压泵、多相流工艺计算、段塞流及段塞捕集器设计、水化物形成与防护、管道内壁腐蚀等。

发电厂锅炉水冷壁鼓包爆管的原因及处理措施

分析了锅炉水冷壁鼓包爆管的原因是由于 pH不合格、溶解氧合格率低、凝气器多次泄漏 ,一些杂质进入锅炉导致坑下腐蚀所至 ,并提出了防止鼓包爆管的措施。