摘要
为了提高45钢零件的使用寿命,采用喷射电沉积在其表面制备了Ni-P-BN(h)-Al2O3复合镀层。通过扫描电镜(SEM)检测了复合镀层的表面形貌,利用电化学工作站研究了复合镀层的耐腐蚀性能。结果表明,在喷射电压22~28 V的范围内,随着电压的增大,Ni-P-BN(h)-Al2O3复合镀层的耐腐蚀性能先提升后降低;在喷射电压为25 V时,复合镀层的耐腐蚀性能最好;在喷射间隙1.6~2.0 mm的范围内,随着间隙的增大,Ni-P-BN(h)-Al2O3复合镀层的耐腐蚀性能逐渐提升,当喷射间隙为2.0 mm时,复合镀层的耐腐蚀性能最好。
Ni-P-BN(h)-Al2O3 composite coating was prepared on the surface of 45 steel parts by spray electrodeposition technology.The surface morphology of the composite coating was characterized by scanning electron microscopy(SEM).The corrosion resistance of the composite coating was studied by electrochemical workstation.Results showed that with the increase of the applied voltage within arrange of 22~28 V,the corrosion resistance of the composite coating was enhanced at first and then decreased.Among others,the composite coating deposited at voltage of 25 V presented the best corrosion resistance.While the corrosion resistance of the composite coating was enhanced gradually with the increase of the gap from 1.6 mm to 2.0 mm between injection nozzle to the workpiece,and the composite coating had the best corrosion resistance when prepared with the gap of 2.0 mm.
作者
杨寅初
傅秀清
刘琳
马文科
沈莫奇
YANG Yinchu;FU Xiuqing;LIU Lin;MAWenke;SHEN Moqi(College of Engineering,Nanjing Agricultural University,Nanjing 210031,China;Key Laboratory of Intelligence Agricultural Equipment of Jiangsu Province,Nanjing 210031,China)
出处
《中国腐蚀与防护学报》
CAS
CSCD
北大核心
2020年第1期57-62,共6页
Journal of Chinese Society For Corrosion and Protection
基金
国家大学生创新训练项目(20181037088)
南京农业大学大学生创新项目训练计划(1830B18).
