含W元素与含P元素铁基非晶合金涂层耐蚀性能的对比研究  

Corrosion Resistance Study on Fe-based Amorphous Alloy Coatings Containing W or P

作　　者：侯伟骜[1,2] 崔崇[1,2] 国俊丰[1,2] 万伟伟[1,2] 

机构地区：[1]北京矿冶研究总院,北京100160 [2]北京市工业部件表面强化与修复工程技术研究中心,北京100160

出　　处：《热喷涂技术》2012年第4期42-45,共4页Thermal Spray Technology

摘　　要：本文采用两种Fe基非晶合金粉末,通过大气等离子喷涂工艺制备非晶涂层。其中一种含有10%P元素(编号Fe-P),另一种含有10%W元素(编号Fe-W),且二者其他化学成分相同。通过电化学工作站对涂层分别在酸、碱、盐腐蚀介质中的耐蚀性能进行了研究。研究表明,Fe-W与Fe-P涂层在1mol/LH2SO4溶液中的耐蚀性能相当,而在10%NaOH溶液中Fe-W涂层的自腐蚀电位提高了135mV;在3.5%NaCl溶液中Fe-W涂层的自腐蚀电位提高了358mV,并且产生了耐氯离子腐蚀的钝化膜,耐腐蚀能力优于Fe-P涂层。In this work, two kinds of Fe-based amorphous alloy powders were deposited by atmospheric plasma spray （APS）. One of the powders contains W by 10%, the other contains P by 10%, and the remaining elements are the same. The corrosion resistance was studied through electrochemical work station. Research showed that the corrosion resistance of Fe-W is equivalent with Fe-P in lmol/L H2SO4 solution. But, the corrosion potential of Fe-W in NaOH and NaC1 corrodents were increased by 135mV and 358 mV, respectively. Fe-W coatings could establish a stable passivation membrane in NaCI solution, the corrosion resistance is better than Fe-P coatings.

关 键 词：FE基非晶合金 等离子喷涂 腐蚀 W元素 

分 类 号：TG174.4[金属学及工艺—金属表面处理]