在高温硝酸与丙烷蒸气环境中R60702工业纯锆的腐蚀行为
Corrosion Behavior of R60702 Industrial Pure Zirconium in High TemperatureNitric Acid and Propane Vapor
摘 要
通过均匀腐蚀试验研究了R60702工业纯锆在高温硝酸和丙烷蒸气环境中的腐蚀行为。结果表明：R60702纯锆在260℃的硝酸与丙烷蒸气中的腐蚀速率极低，表面氧化膜较致密，厚度约为15 μm；在430℃的硝酸与丙烷蒸气中的腐蚀速率较高，表面氧化膜厚度约为50 μm，由外层疏松氧化膜和内层致密氧化膜组成，氧化膜中存在微裂纹，且部分氧化膜脱落；表面氧化膜均主要由单斜ZrO2和四方ZrO2组成；当温度为260℃时，致密氧化膜对基体起到保护作用；当温度为430℃时，氧化膜保护作用降低，氧化膜增厚并产生应力松弛，导致四方ZrO2转变为单斜ZrO2，氧化膜体积膨胀并产生微裂纹，裂纹扩展合并导致氧化膜脱落。
硝酸与丙烷蒸气
氧化膜
耐腐蚀性能
industrial pure zirconium
nitrous acid and propane vapor
oxide film
corrosion resistance
Abstract
The corrosion behavior of R60702 industrial pure zirconium in high temperature nitric acid and propane vapor was studied by uniform corrosion test. The results show that the R60702 pure zirconium had the very low corrosion rate in nitric acid and propane vapor at 260 ℃, and a dense oxide film with thickness of about 15 μm was formed on the surface. The corrosion rate in nitric acid and propane vapor at 430 ℃ was relatively high; the surface oxide film with thickness of about 50 μm consisted of an outer loose oxide film and an inner dense oxide film; there were micro-cracks in the oxide film and part of the oxide film peeled off. The surface oxide film was mainly composed of monoclinic ZrO2 and tetragonal ZrO2. When the temperature was 260 ℃, the dense oxide film protected the substrate. When the temperature was 430 ℃, the protective effect of the oxide film decreased, leading to the thickening of the oxide film and stress relaxation, which caused the transformation of tetragonal ZrO2 to monoclinic ZrO2, expansion of the oxide film volume and generattion of micro-cracks. The cracks expanded and merged, resulting in the peeling of the oxide film.
中图分类号 TG146.4 DOI 10.11973/jxgccl202007007
所属栏目 试验研究
基金项目
收稿日期 2019/12/27
修改稿日期 2020/6/3
网络出版日期
作者单位点击查看
备注张强(1987-),男,安徽合肥人,工程师,硕士
引用该论文: ZHANG Qiang,QI Shifeng,CHEN Hongfei,KONG Weihai,WAN Zhang,HU Pan,LIU Yan. Corrosion Behavior of R60702 Industrial Pure Zirconium in High TemperatureNitric Acid and Propane Vapor[J]. Materials for mechancial engineering, 2020, 44(7): 33～37
张强,齐世锋,陈鸿飞,孔韦海,万章,胡盼,刘燕. 在高温硝酸与丙烷蒸气环境中R60702工业纯锆的腐蚀行为[J]. 机械工程材料, 2020, 44(7): 33～37
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参考文献
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【2】高扬,沈艳祥,李哲.Zr-3的研究进展及应用前景[J].科技视界,2016(9):268.
【3】海敏娜,王文,黄帆,等.工业级锆及锆合金焊接研究进展[J].电焊机,2018,48(6):87-91.
【4】马帅,李强,梁雪,等. Zr-Cr合金的显微组织及腐蚀行为[J].上海金属,2018,40(4): 13-17.
【5】沈月锋.β相水淬及退火处理对Zr-4合金耐腐蚀性能的影响[D].上海:上海大学,2012.
【6】赵文金,苗志,蒋宏曼,等.Zr-Sn-Nb合金的腐蚀行为研究[J].中国腐蚀与防护学报,2002, 22(2):124-128.
【7】胡旭坤,徐滨,杨晶,等.国产R60702(Zr-3)工业锆板材性能及应用[J].山东化工, 2019, 48(5): 111-113.
【8】叶昕宁.工业纯锆R60702激光焊工艺及接头性能表征[D].镇江:江苏科技大学,2018.
【9】刘志颖,晏阳阳,郭小辉,等.锆R60702等离子弧焊接头组织和性能分析[J].焊接技术, 2014,43(11):9-11.
【10】刘志颖,郭小辉,晏阳阳,等.锆R60702 GTAW焊接接头组织和性能研究[J].材料开发与应用, 2014, 29(4): 25-28.
【11】张莹莹,纪强,王国嘉.R60702管板角接接头耐蚀性研究[J].当代化工,2014,43(2): 189-190.
【12】龙腾,黄坚,戴军.R60702锆材CO2激光焊的气体保护及接头的组织、力学性能[J].机械工程材料,2013,37(7):48-52.
【13】凌堃,王正东.TIG焊对工业纯锆R60702接头腐蚀性能的影响[J].核动力工程,2013,34(3):37-41.
【14】BAEK J H,JEONG Y H,KIM I S.Effects of the accumulated annealing parameter on the corrosion characteristics of a Zr-0.5Nb-1.0Sn-0.5Fe-0.25Cr alloy[J].Journal of Nuclear Materials, 2000,280(2):235-245.
【15】YILMAZBAYHAN A,MOTTA A T,COMSTOCK R J,et al.Structure of zirconium alloy oxides formed in pure water studied with synchrotron radiation and optical microscopy:Relation to corrosion rate[J].Journal of Nuclear Materials,2004,324(1):6-22.
【16】TAKEDA K,ANADA H.Mechanism of corrosion rate degradation due to tin[M]//Zirconium in the Nuclear Industry: Twelfth International Symposium. West Conshohocken: ASTM International,2000: 592-608.
【17】汪峰. 高温高压水中新锆合金表面氧化膜的原位拉曼光谱研究[J]. 腐蚀与防护,2019, 40(7): 469-473.
【18】周邦新,李强,姚美意,等.锆-4合金在高压釜中腐蚀时氧化膜显微组织的演化[J].核动力工程,2005,26(4):364-371.
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【21】BEIE H J,MITWALSKY A,GARZAROLLI F,et al. Examinations of the corrosion mechanism of zirconium alloys[M]//Zirconium in the Nuclear Industry: Tenth International Symposium. West Conshohocken: ASTM International, 1994: 615-643.
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