|
|||||
|
|
| 激光熔覆Ni+Cr_2O_3复合涂层的耐蚀性 | |
| 引用本文： | 张大伟,雷廷权,王辉东,白波.激光熔覆Ni+Cr_2O_3复合涂层的耐蚀性[J].大庆石油学院学报,2000,24(3):63-66. |
| 作者姓名： | 张大伟 雷廷权 王辉东 白波 |
| 作者单位： | 1. 大庆石油学院,石油机械系,黑龙江,安达,151400;哈尔滨工业大学,材料科学与工程学院,黑龙江,哈尔滨,150001 2. 哈尔滨工业大学,材料科学与工程学院,黑龙江,哈尔滨,150001 3. 大庆油田有限责任公司,第六采油厂,黑龙江,大庆,163114 |
| 基金项目： | 中国石油天然气集团公司资助项目,95-125, |
| 摘 要： | 研究了激光搭接熔覆Ni+Cr2 O3复合涂层在 0 .5mol/LH2 SO4 +0 .5mol/LNaCl水溶液中的电化学行为 .试验表明Cr2 O3粒子在激光熔池中发生了完全溶解 ,涂层具有胞状枝晶组织特征 .激光熔覆Ni+Cr2 O3复合涂层比单一熔覆Ni合金涂层和 2Cr13马氏体不锈钢基材具有更低的维钝电流密度和更宽的钝化区范围 ,明显改善了在该腐蚀介质中的抗点蚀能力 . |
| 关 键 词： | 激光熔覆 Ni+Cr_2O_3复合涂层 电化学性能 耐蚀性 |
Corrosion resistance of laser cladding Ni+Cr2O3 composite coating |
|
| ZHANG Da-wei,LEI Ting-quan,WANG Hui-dong,BAI Bo.Corrosion resistance of laser cladding Ni+Cr2O3 composite coating[J].Journal of Daqing Petroleum Institute,2000,24(3):63-66. | |
| Authors: | ZHANG Da-wei LEI Ting-quan WANG Hui-dong BAI Bo |
| Abstract: | The electrochemical behavior of laser\|clad Ni+Cr 2O 3 composite coating with overlapping tracks under 0.5 mol/L H2SO4 + 0.5 mol/L NaCl solution have been studied. Test results show that Cr 2O 3 particles have a complete dissolution in laser melt pools, which provides its coating with a feature of cellular dendritic structure. A lower passivate current density and a wider passivation region were formed in laser-clad Ni+Cr 2O 3 composite coating compared with those of single cladded Ni alloy and 2Cr13 substrate, resulting in an obvious improvement on pit corrosion resistance in the corrosive medium. |
| Keywords: | laser cladding Ni+Cr 2O 3 composite coating electrochemical characteristic corrosion resistance |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |
