HP40合金在H2_O/H_2和空气中氧化行为的研究  

Oxidation Behavior of HP40 Alloy at H_2O/H_2 and Air Oxygen Condition

作　　者：任衍伦[1] 刘京雷[1] 颜磊[1] 张莉[1] 徐宏[1] 

机构地区：[1]华东理工大学机械与动力工程学院化学工程联合国家重点实验室,上海200237

出　　处：《化工技术与开发》2013年第9期1-4,7,共5页Technology & Development of Chemical Industry

基　　金：教育部博士点基金项目(20110074110009);上海市教委曙光跟踪计划项目

摘　　要：在H2O/H2和空气的状态下,HP40合金试样表面氧化出不同的复合氧化层,对比研究在不同的氧化条件下试件表面氧化物的组成。用XRD、EDS和SEM分别对两种环境下的试样表面氧化层的情况进行了对比分析。结果表明,在H2O/H2气氛下,试样表面生成了包含尖晶石的氧化层,随温度的升高,由针状变为颗粒状;在空气条件下,随着温度升高,形成了致密颗粒状富铬氧化物,并且逐渐长大,部分高温氧化下,试样表面氧化层出现了剥落。不同氧化对HP40钢表面氧化影响较大,不同金属氧化物在氧分压不同时,表现出稳定性不同。Different compound oxidation layers were prepared on the surface of HP40 alloy in different oxygen condition, and its surface mechanism of composition and formation were discussed. The oxidation layer of specimen surface in two situations were comparative analyzed by XRD and SEM, EDS. Results showed that the surface would generated containing spinel oxide layer, and the morphologies changed from acicular to compact and granulate as the increase of temperature. Specimen surface was formed a dense granular chromium- rich oxide and grew up as the temperature increases at air atmosphere, the specimen surface oxidation layer appeared spalling at high-temperature oxidation. Different oxygen content great influenced HP40 oxidation and different metal oxide had different stability.

关 键 词：HP40合金 H2O/H2 空气 氧化行为 

分 类 号：TG174.4[金属学及工艺—金属表面处理]