铜粉表面磷化工艺优选

发布时间：2018-01-20 19:07

  本文关键词： 铜粉 磷化 形貌 抗氧化性 粒度　出处：《材料保护》2017年06期 　论文类型：期刊论文

【摘要】：为提高铜粉的抗氧化性能,以氧化锌、磷酸、硝酸配制磷化液,通过单因素试验进行铜粉磷化工艺优选,采用扫描电镜、X射线衍射仪、激光粒度仪及烧结试验等研究了磷化液成分、磷化时间、磷化温度对所得磷化铜粉形貌、粒径和抗氧化性能的影响。结果表明:铜粉磷化后在150℃时抗氧化性得到较大改善,在300~400℃之间的抗氧化能力明显提高,但在400℃时,铜粉的抗氧化能力改善相对较小;磷化的最佳工艺为A磷化体系(8 g Zn O,14 m L HNO3,7 m L H3PO4,250 m L H2O)、磷化温度65℃、磷化时间40 min;最佳条件下磷化,能够获得粒径分布更均匀、分散性和抗氧化性更好的类球形铜粉。
[Abstract]:In order to improve the oxidation resistance of copper powder, zinc oxide, phosphoric acid and nitric acid were used to prepare phosphating solution. The composition of phosphating solution, phosphating time, phosphating temperature and morphology of phosphating copper powder were studied by laser particle size analyzer and sintering test. The results showed that the oxidation resistance of copper powder was improved after phosphating at 150 鈩，

本文编号：1449231