文档介绍：毕业设计(论文)
硝酸、温度、稀土对不锈钢阴极镍粘结力的影响
学生姓名
学号
专业班级冶金工程(2)班
指导教师
提交日期
材料科学与工程学院
摘要
国际上,采用不锈钢作为铜电解精炼的阴极——即所谓的ISA法和KIDD法电解工艺,己经成为一种趋势,在国内铜电解方面已有自主研发的不锈钢阴极的制备方法了,但是与同电解就有许多相似地方的镍电解还是采用的是传统的电解方法。
本论文的重点是对不锈钢做永久阴极进行研究,不锈钢阴极板成功与否的关键在于不锈钢的表面质量,良好的表面质量应使不锈钢与阴极镍有适当的结合力,使阴极镍在电解周期以内不会由于自身重量而自行从不锈钢表面脱落,而又在达到电解周期以后,借助于机械或人力易于从阴极板上剥离铜下来。本实验的不锈钢的表面处理为氧化处理方法,氧化因素为硝酸、温度、稀土。通过表面的氧化处理后进行电解以得到最优的氧化处理方法。而同样关键的不锈钢的耐腐蚀研究由同组的同学完成。本实验对不锈钢的表面打磨和氧化处理时间不做过多的研究,表面打磨为400目的砂纸打磨,时间为固定时间15分钟。其它因素的影响由本组的其他同学完成。
关键词:镍、电解精炼、不锈钢阴极、粘结力
Abstract
Internationally, the use of stainless steel as the electrolytic refining of copper cathode - the so-called ISA law and KIDD electrolysis technology, has e a trend in electrolytic copper in China has been independently researched and developed the preparation method of stainless steel cathode, but with There are many similarities with local electrolytic nickel electrolysis or the use of traditional methods of electrolysis.
The focus of this paper is to do a permanent stainless steel cathode study, stainless steel cathode plate is the key to the ess of the surface quality of stainless steel, good surface quality should be made of stainless steel and nickel cathode bination of power, so that nickel cathode in the electrolysis cycle within not as a result of their own weight loss from the stainless steel surface, and after reaching the electrolysis cycle, through the use of mechanical or human easily stripped from the cathode copper from the board. Stainless steel in this experiment for the oxidation of the surface treatment method, oxidation factors for nitric acid, temperature, rare earth. Through the surface after oxidation in order to get optimal electrolytic oxidation treatment. The same critical research of stainless steel corrosion resistance by the same group of students plete. This experiment on the surface of polished stainless steel and oxidation processing time not too much research, the purpose of the surface of polished 400 sandpaper grindin