稀土纳米复合镀层的制备及高温抗氧化性能研究
Preparation of RE Nano-composite Coating and Study on Oxidation Resistance at High-temperature
王 霞1, 李占君1, 王 平2
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作者单位:(1. 安阳工学院 机械工程学院, 河南 安阳 455000; 2.石家庄科技工程职业学院 机电工程系, 河北 正定 050800)
中文关键字:稀土; 纳米复合电铸; 高温抗氧化
英文关键字:RE; nano-composite electroforming; high-temperature oxidation resistance
中文摘要:利用超声波在电镀过程中产生的空化效应,解决稀土纳米颗粒在电镀过程中易发生团聚的问题,得到性能优良的Ni-CeO2纳米复合镀层。结果表明,在实验条件下的最佳工艺参数为:镀液中CeO2 颗粒量为40 g/L,阴极电流密度为4 A/dm2,超声波功率为240 W,频率为20 kHz。有超声镀层的电沉积率比无超声镀层的要大;有超声镀层的可形成致密的氧化膜,其高温抗氧化性能要优于无超声镀层的。
英文摘要:By using cavitation effect of ultrasonic during electrodeposition, the problem that the rare earth nano-particles were easy to form the agglomeration during electrodeposition was solved, the nano-composite coating with excellent performance was obtained. The results show that the optimum process parameters are: CeO2 concentration in plating solution 40 g/L; current density 4 A/dm2; ultrasonic power 240 W; frequency 20 kHz. The electrical deposition rate with ultrasonic electrodeposition is bigger than without. The density oxidation film is formed with ultrasonic electrodeposition, the oxidation resistance at high-temperature is superior to electrodeposition without ultrasonic.