热氧化温度对预喷丸R60702表面氧化层及耐蚀性影响研究  

Research on Effects of Thermal Oxidation Temperature on Surface Oxidation and Corrosion Resistance of Pre-shot Peened R60702

作　　者：解豪 牛靖[1] 王浩[2] 裴廷刚[2] 李宁 张建勋[1] XIE Hao;NIU Jing;WANG Hao;PEI Tinggang;LI Ning;ZHANG Jianxun(State Key Laboratory for Mechanical Behavior of Materials,Xi'an Jiaotong University,Xi'an 710049,China;No.1 Gas Production Plant of Changqing Oilfield Company,Yulin 718500,China;Xi'an United Pressure Vessel Co.,Ltd.,Xi'an 710201,China)

机构地区：[1]西安交通大学金属材料强度国家重点实验室,陕西西安710049 [2]中国石油长庆油田分公司第一采气厂,陕西榆林718500 [3]西安优耐特容器制造有限公司,陕西西安710201

出　　处：《热加工工艺》2023年第12期44-47,共4页Hot Working Technology

基　　金：十三五装备预研共用技术项目(41421080302)。

摘　　要：对预喷丸工业纯锆R60702分别在450、550、650和750℃进行2 h的空气热氧化处理后,测试了氧化层厚度、纳米硬度和在15wt%的H2SO4溶液中的电化学腐蚀行为。结果表明,氧化层厚度随温度的升高而逐渐增大;氧化层截面纳米硬度在650℃氧化温度下最高,可达17.98 GPa;与喷丸试样相比,预喷丸+热氧化试样在15wt%H2SO4溶液中表现出良好的耐腐蚀性能;650℃氧化2 h为工业纯锆R60702的最优热氧化工艺。The surface oxide film thickness,nano-hardness and electrochemical corrosion behavior in 15wt% H2SO4solution were tested for the pre-shot peened industrial pure zirconium R60702 treated by air thermal oxidation treatment at 450℃,550 ℃,650 ℃ and 750 ℃ for 2 h,respectively.The results show that the thickness of the oxide layer increases gradually with the increase of temperature.The nano-hardness of oxide layer section reaches 17.98 GPa at the oxidation temperature of650 ℃.Compared with shot peened sample,pre-shot peened+thermal oxidation sample shows better corrosion resistance in15wt% H2SO4solution,and the optimal thermal oxidation process of industrial pure zirconium R60702 is 650 ℃×2 h.

关 键 词：工业纯锆 预喷丸 热氧化 电化学腐蚀 

分 类 号：TG156.98[金属学及工艺—热处理] TG174.2[金属学及工艺—金属学]