狄姣.电镀-高温氧化制备Cr2O3阻氚涂层[J].稀有金属材料与工程,2019,48(2):656~661.[di jiao.Cr2O3 Coating Prepared by Electroplating-high Temperature Oxidation as Tritium Permeation Barrier[J].Rare Metal Materials and Engineering,2019,48(2):656~661.]
电镀-高温氧化制备Cr2O3阻氚涂层
投稿时间:2017-04-28  修订日期:2017-10-11
中文关键词:  电镀-高温氧化  Cr2O3涂层  阻氢性能
基金项目:国家磁约束聚变能研究专项(课题编号2013GB110005)国家自然科学基金(51272079, 51002054)
中文摘要:
      采用电镀-高温氧化技术在321不锈钢基材表面制备出了Cr2O3涂层,研究了氧化时间及氧化温度对涂层组织结构和表面形貌的影响。利用XRD、SEM、EDS等分析测试手段对涂层的组织结构、元素分析及形貌进行了表征,并对涂层的抗腐蚀性能和阻氢性能进行了测试。结果表明,电流密度为0.3 A/cm2、氧化温度为700 oC、氧化时间为4 h下获得的Cr2O3涂层,晶粒尺寸均匀,约为1 μm,晶粒之间结合紧密,孔隙少;Cr2O3涂层与基材之间存在Cr-O的过渡层,使Cr2O3涂层与基材结合紧密,界面处无空洞、裂纹等缺陷;且该涂层具有良好的抗腐蚀性能(0.98 10-4?μA/cm2)和抗热冲击性能(300次),阻氢渗透性能比基材提高了10.5倍。
Cr2O3 Coating Prepared by Electroplating-high Temperature Oxidation as Tritium Permeation Barrier
英文关键词:Electroplating-high temperature oxidation  Cr2O3 coating  Resistance of hydrogen permeation
英文摘要:
      Cr2O3 coating was successfully prepared on the surface of 321 steel substrate by electroplating-high temperature oxidation technology. The influence of oxidation treatment and oxidation time were investigated. The microstructures, elemental distribution and morphology of the coatings were characterized by XRD, SEM and EDS, respectively. The hardness, corrosion resistance and hydrogen resistance of the coatings were tested. The results show that the obtained Cr2O3 coating has tightly combined grains with uniform grain size of about 1 μm and low porosity when the oxidation temperature at 700 oC. The existence of a Cr-O transition layer between Cr2O3 coating and the substrate enables interfaces to bond closely. And no holes, cracks and other defects are found in interfaces. The coating exhibits good corrosion resistance, heat resistance of impact performance (300 times), resistance to hydrogen permeability increased by 10.5 times.
作者单位E-mail
狄姣 华中科技大学材料成形与模具技术国家重点实验室 di_jiao@126.com 
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