CAJ | 학술논문

试验以直接超声方式,在喷射电沉积装置的基础上加载超声设备,分别在20℃和50℃两种镀液温度下在A3钢基体上制备了加载超声和不加载超声Ni镀层,研究了超声波及温度对Ni镀层表面形貌和硬度的影响。试验结果分析表明：在20℃条件下,超声可避免镀层裂纹的产生,提高镀层的硬度;在50℃条件下,超声可细化镀层的组织,且可显著提高镀层硬度;超声波对喷射电沉积层组织和性能的影响机理主要在于超声空化引起的析氢减少、细晶强化和加工硬度。
시험이직접초성방식,재분사전침적장치적기출상가재초성설비,분별재20℃화50℃량충도액온도하재A3강기체상제비료가재초성화불가재초성Ni도층,연구료초성파급온도대Ni도층표면형모화경도적영향。시험결과분석표명：재20℃조건하,초성가피면도층렬문적산생,제고도층적경도;재50℃조건하,초성가세화도층적조직,차가현저제고도층경도;초성파대분사전침적층조직화성능적영향궤리주요재우초성공화인기적석경감소、세정강화화가공경도。
The direct ultrasonic assisted jet electrodeposition equipment is used to prepare Ni coating on A3 steel substrate,with ultrasonic and without ultrasonic,at temperatures of 20℃ and 50℃ respectively.The influences of ultrasonic to surface morphology and hardness of Ni coatings are investigated.The results show that deposited with ultrasonic at 20℃,no crack is found in the coating and the hardness of the coating increases;deposited with ultrasonic at 50℃,the fine coating microstructure is obtained and the hardness of the coating increases evidently.The main mechanism of ultrasonic effect on the morphology and the performance of jet electrodeposition is the hydrogen reducing,fine grain strengthening and work hardening resulted by ultrasonic cavitation.