酸性镀液铝合金表面沉积Ni-Mo-P三元合金非晶镀层  

Electroless deposition of amorphous Ni-Mo-P coating on aluminium alloy using acid bath

作　　者：梁波[1] 刘静[1] 卢冠宇[1,2] 

机构地区：[1]燕山大学亚稳材料制备技术与科学国家重点实验室,河北秦皇岛066004 [2]北京市三一重机有限公司,北京102202

出　　处：《燕山大学学报》2011年第6期523-527,共5页Journal of Yanshan University

基　　金：国家重点基础研究发展计划(973计划)资助项目(2010CB731604)

摘　　要：采用酸性化学镀液在铝合金表面沉积Ni-Mo-P三元合金非晶镀层。利用透射电镜(TEM)、场发射扫描电镜(FESEM)、X射线衍射分析(XRD)、能谱(EDS)等现代分析手段,对镀层显微结构进行了表征,探讨了钼酸钠浓度和热处理对镀层纳米压痕硬度的影响。结果表明,镀态下,化学镀Ni-Mo-P三元合金镀层为致密非晶态镀层,镀层中Mo元素分布均匀,镀层与基体结合良好。热处理可促使非晶镀层晶化,产生Ni和Ni3P晶相,获得了纳米压痕硬度为15.12 GPa的最大值。The Ni-Mo-P alloy coating is deposited by electroless on the substrate of an aluminum alloy using acid bath. The morphology and structure of the Ni-Mo-P coating are studied by thermal field emission scanning electron microscope （FESEM）, transmission electron microscope （TEM）, X-ray diffractometer （XRD） and energy dispersive spectrometer （EDS）. The effects of concentration of Na2MoO4 and heat treatment on the nano-indentation hardness are discussed. The experimental results show that the as-deposited Ni-Mo-P coating was of amorphous structure. Mo evenly distributes in the coating, and the bonding between the coating and the substrate is satisfactory. The Ni and Ni3P crystallines formed after heat treatment. The maximum nano-indentation hardness of the coating subjected to heat treatments at 400 ℃ is 15.12 GPa.

关 键 词：酸性镀液 化学镀 NI-MO-P合金 铝合金 热处理 

分 类 号：TG333.17[金属学及工艺—金属压力加工]