射流电沉积工艺参数对沉积层形貌的影响

摘要

Jet electrodeposition technology possesses special locality and material performance,and can be utilized for repairing mechanical parts.However,the uniformity and quality of the deposits need to be improved.The influences of electrolyte jet flow velocity,current density and number of layers on the morphology of the deposits were investigated.Results showed that surface quality of the deposits gradually improved with the increase of flow velocity when the jet velocity was in the range of 1～10 m/s.When the current density was in the range of 100～600 A/dm2,the morphology of the deposits gradually worsen and hydrogen evolution occurred with the increase of current density.When the number of layers was in the range of 400～ 1 600,the surface quality of the deposits gradually worsen with the increase of layers.A series of optimized parameters were obtained,it would help to improve the quality of the deposits.%射流电沉积技术具有特殊的定域性和材料特性,可用于机械零件修复,但沉积层的均匀性和质量需要改善.研究了电解液喷射流速、电流密度、沉积层数等对沉积层形貌的影响.结果表明:喷射流速在1～10m/s范围内,随着喷射流速的增大,沉积层的表面质量逐渐改善;电流密度在100～600 A/dm2范围内,随着电流密度的增大,沉积层形貌逐渐恶化,产生析氢副反应;沉积层数在400～1 600层范围内,沉积层的表面质量随层数的增加而逐渐恶化.得到了一系列的优化参数,有助于改善沉积层的质量.