摘要
采用放电等离子热压烧结工艺制备了不同W掺杂量的(Mo,W)_(2)NiB_(2)基金属陶瓷,对金属陶瓷的物相组成、微观组织结构和耐腐蚀性进行了表征与分析。结果表明:制备的(Mo,W)_(2)NiB_(2)基金属陶瓷主要由(Mo,W)_(2)NiB_(2)陶瓷相和Ni基黏结相组成。当W掺杂量(摩尔分数)为0.15%时,(Mo,W)_(2)NiB_(2)基金属陶瓷表现出最佳的耐腐蚀性能,具有最大的自腐蚀电位和最小的自腐蚀电流密度,分别为−0.889 V(vs SCE)和53.31μA/cm^(2),腐蚀表面所形成的具有保护作用的钝化膜电阻最大,为34.99 kΩ/cm^(2)。
(Mo,W)_(2)NiB_(2)based cermets with different W doping contents were prepared by spark plasma sintering technology.The phase composition,microstructure and corrosion resistance of cermets were characterized and analyzed.The results show that(Mo,W)_(2)NiB_(2)based cermets are mainly composed of(Mo,W)_(2)NiB_(2)ceramic phase and Ni based bonding phase.When the W doping content(mole fraction)is 0.15%,(Mo,W)_(2)NiB_(2)based cermet exhibits excellent corrosion resistance.The self corrosion potential reaches the maximum and the self-current density reaches the minimum,which are−0.889 V(vs SCE)and 53.31μA/cm^(2),respectively,and the passive film formed by corrosion surface has a maximum electric resistance of 34.99 kΩ/cm^(2).
作者
李文虎
樊战博
艾桃桃
董洪峰
张良
LI Wen-hu;FAN Zhan-bo;AI Tao-tao;DONG Hong-feng;ZHANG Liang(School of Material Science and Engineering,Shaanxi University of Technology,Hanzhong 723000,China;National and Local Joint Engineering Laboratory for Slag Comprehensive Utilization and Environmental Technology,Shaanxi University of Technology,Hanzhong 723000,China)
出处
《中国有色金属学报》
EI
CAS
CSCD
北大核心
2022年第4期1036-1043,共8页
The Chinese Journal of Nonferrous Metals
基金
国家自然科学基金资助项目(51602186)
陕西省自然科学基金资助项目(2020JM-599,2020JQ-870)
矿渣综合利用环保技术国家地方联合工程实验室开放项目(SLGPT2019KF01-04)。
