核电堆内构件紧固件镀铬工艺研究
Electroplating & Finishing(2021)
Abstract
以核电堆内构件螺栓为基体电镀硬铬,研究了镀液铬酸酐质量浓度、温度和电流密度对镀层性能的影响.结果表明,镀液温度和铬酸酐质量浓度对镀铬层显微硬度的影响较大,电流密度的影响较小,较佳的工艺条件为:CrO3质量浓度230 g/L,温度55~60°C,电流密度25~35 A/dm2.该条件下制备的镀铬层显微硬度、结合力、成分、厚度等均满足设计要求.
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