
总第205期 2015年8月
文章编号:10099700(2015)04000703
南方金属 SOUTHERNMETALS
Sum.205 August2015
Ni-W-P化学镀层热处理工艺优化研究
张培彦,余泽通”,刘贯军2
(1.郑州旅游职业学院,河南郑州450009;2.河南科技学院,河南新乡453003)
摘要:首先制备一种Ni-W-P化学镀层,并利用扫描电镜观察镀层形貌和检测化学成分,然后利用箱式试验电炉对该合金镀层分别在不同加热温度和不同加热时间条件下进行热处理,最后利用MHV-1000Z型显微硬度计对热处理前后的镀层硬度进行了测试.结果表明,加热温度和加热时间对镀层硬度的影响存在最优值,而且相对加热时间,热处理温度对镀层硬度有更显著的影响.并得出最优的热处理工艺参数,即在400℃下加热90min时镀层硬度最大
关键词:Ni-W-P化学镀;热处理;优化
中图分类号:TQ156.1
文献标识码:A
Optimization of Heat-treatment Process of
ElectrolessNi-W-PPlatingDeposits
ZHANG Pei-yan', YU Ze-tong", LIU Guan-jun"
(1. Zhengzhou Tourism College,Zhengzhou,450009, P.R.China;
2.Henan Institute of Science and technology, Xinxiang, 453003, P.R.China)
Abstract: A sort of electroless Ni-W-P plating deposit was prepared and observed by scanning electron microscope and its chemical components were measured by using energy spectrometer. Heat treatment of the deposits was carried out under the conditions of different heating temperature and heating time, and last, hardness of the deposits was tested with MHV-1000Z type microhardness tester, The results show that there is the most appropriate heating temperature and heating time for the highest hardness of the deposit, and that effect of heating temperature on hardness of the deposit is more remarkable than that of heating time. At last, the optimal heating treatment process parameters are gained for the highest hardness of the de-
posit, that is heating temperature of 400 °C and heating time of 90 min. Key words: electroless Ni-W-P plating; heat treatment; optimization
三元合金Ni-W-P镀层与Ni-P镀层相比,具有结合力好、硬度高,耐蚀、耐磨性能好等优点,近年来已经在形状复杂的汽车喷油嘴、行星齿轮、各种钢制阀门、油田采输油管道、抽油泵、塑料模具等得到广泛应用"-8].化学镀Ni-W-P镀层的耐蚀性和耐磨性均随镀层中的钨含量增加而提高19.在进一步提高镀层的硬度及耐磨性能方面,主关旭等人通过热处理试验得到在400℃时镀层硬度达到峰值,其值达到940HV[10],曲彦平等的试验结果为
收稿日期:2015-03=09
400℃热处理镀层硬度达到最大1120HV(),郭忠诚的试验结果为热处理温度到300℃时,达峰值 1289HV[12].以上研究是在不同的镀液配方,不同的基体材料上得到的结果,差异较大,并且并未给出热处理时间对提高镀层硬度的影响,针对这一问题,本文通过对Ni-W-P镀层进行热处理工艺优化试验,寻求提高镀层硬度的最佳热处理工艺参数,重点阐述了热处理工艺中温度和时间对化学镀Ni-W-P合金组织结构和性能的影响
基金项目:Ni-W-P纳来Si3N4化学复合镀层在高速钢刀具上的应用研究,河南省科技厅科技攻关项目(112102210023);新乡市重点科技攻关计划项目(ZG13010)
作者简介:张培彦(1979-),男,2003年河南科技学院机电技术专业硕士研究生毕业,讲师