摘要
通过冷喷涂技术制备了V(Cu2O)分别为0%、10%、20%和30%的4种Cu-Cu2O涂层。在PhilipsXL30型环境扫描电镜下观察发现涂层的致密度高且较为均匀。这是由于Cu颗粒能通过塑性变形,以机械咬合和冶金结合的方式紧密地结合在一起形成涂层。同时,Cu2O颗粒填充了较大的Cu颗粒之间的缝隙,从而使得涂层孔隙率随着Cu2O含量的增加略有降低。Cu2O增大了碰撞沉积过程中的摩擦,增强了热软化效应,促进Cu颗粒的微区熔化和冶金结合,进而使得涂层沉积效果有所提升。
Four kinds of Cu-CuzO coatings whose Cu20 volume fraction were 0%, 10%, 20% and 30%, re- spectively, were prepared by cold spray technology. Under the observation of Philips XL30 environment scanning electron microscope, the coating was uniform and had high-density. Cu particles, by plastic deformation, could me- chanically and metallurgically combine together closely to form the coating. And Cu2O particles could fill the gaps among the Cu particles to slightly decrease the coating porosity. Meanwhile, Cu2O increased friction role in the colli- sion and deposition process, enhanced the thermal softening effect, promoted micro-area melting and metallurgical bonding of Cu, and improved the deposition of the coating finally.
出处
《材料导报》
EI
CAS
CSCD
北大核心
2012年第20期13-17,共5页
Materials Reports
基金
国防创新团队项目(JK100401)
关键词
冷喷涂
铜
氧化亚铜
微观形貌
cold spray, copper, cuprous oxide, micromorphology
