超音速火焰喷涂Ni基复合涂层的抗高温腐蚀性能  

High Temperature Corrosion Resistance of High Velocity Oxy-Fuel Sprayed Ni-Based Composite Coating

作　　者：罗靖川 杨冠军[1] 陈林[1] LUO Jing-chuan;YANG Guan-jun;CHEN Lin(State Key Laboratory for Mechanical Behavior of Materials,School of Materials Science and Engineering,Xi’an Jiaotong University,Xi’an 710049,China)

机构地区：[1]西安交通大学材料科学与工程学院金属材料强度国家重点实验室,陕西西安710049

出　　处：《材料保护》2022年第7期31-36,101,共7页Materials Protection

摘　　要：垃圾焚烧炉在工作时由于垃圾本身和焚烧产物的腐蚀,其零部件会遭受严重的高温腐蚀损伤。为了对抗焚烧炉的高温腐蚀问题,采用超音速火焰喷涂技术制备了Cr_(3)C_(2)-NiCr涂层,并研究了该涂层在高温环境下的抗腐蚀性能。将制备的涂层置入高温氧化、熔盐腐蚀和气氛腐蚀环境中开展试验,评估了该金属陶瓷涂层的腐蚀情况和产物。腐蚀试验结果表明:在高温氧化和熔盐腐蚀条件下,随着腐蚀温度从450℃升高至650℃,涂层的腐蚀速率增加。在气氛腐蚀条件下,随着腐蚀温度从550℃升高至650℃,涂层的腐蚀速率增加.Waste incinerator components suffer sever high temperature corrosion damage in working condition due to the corrosion of the waste and the corrosion of incineration products.In order to alleviate the high temperature corrosion of the incinerator,Cr_(3)C_(2)-NiCr coatings were deposited via high velocity oxy-fuel spraying method,and the high temperature corrosion resistance of the coatings was studied.The prepared coatings were tested under high temperature oxidation,molten salt corrosion and atmosphere corrosion environments,and both the corrosion behavior and corresponding products of the above-mentioned cermet coatings were evaluated.The corrosion test results showed that under the high temperature oxidation and molten salt corrosion conditions,with the increase of corrosion temperature from 450℃ to 650℃,the corrosion rates of the coatings increased.Under the atmosphere corrosion condition,the corrosion rates of the coatings increased with the rising of corrosion temperature from 550℃ to 650℃.

关 键 词：超音速火焰喷涂 金属陶瓷涂层 高温腐蚀 

分 类 号：TG174.442[金属学及工艺—金属表面处理]