In this study, tungsten （W） was coated on a copper （Cu） substrate by using doubleglow discharge technique using a pure W panel as the target and argon （Ar） as the discharge and sputtering gas. The crystal structure of the W coating was examined by X-ray diffraction （XRD）. Scanning electron microscopy （SEM） was performed with cross-section images to investigate the penetration depth of W into the Cu body. Additionally, the properties of wearability resistance, corrosion resistance and mechanical strength of the W coated Cu matrix were also measured. It is concluded that in double-glow plasma, W coated Cu can be facilely prepared. It is noticed that the treatment temperature heavily dominates the properties of the W-Cu composite.
In this paper,a W-Cu composite coating was prepared on the Cu substrate through the double-glow discharge technology using a pure W plate as a target.In here argon gas was input into the chamber as the discharge and sputtering gas.The crystal composition and microstructure of W-Cu composite coating were examined by x-ray diffraction(XRD),scanning electron microscopy(SEM).The compose in the cross section was detected by energy dispersive spectrometer(EDS),the distribution of elements along the penetration thickness was then obtained.Then the friction coefficient,the polarization electrochemical corrosion test and the microhardness of W-Cu composite coating was measured.The results indicated that a thick and no-delaminated W-Cu composite coating could be prepared on the Cu substrate by the double-glow plasma technology.
