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Microstructures and nano mechanical properties of the metal tungsten film

Zhu , Li-na and Li , Guo-lu and Wang , Hai-dou and Xu , Bin-shi and Zhuang , Da-ming and Liu , Jia-jun (2009) Microstructures and nano mechanical properties of the metal tungsten film. Current Applied Physics , 9 . pp. 510-514.

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Abstract

The W film was prepared on 1045 steel by magnetron sputtering, with the thickness of 2 lm, its surface and cross-section morphologies were investigated with SEM, and the phase structure was analyzed with XRD. X-ray stress determinator was utilized to measure its residual stress, and the nano-hardness and elastic modulus of the film were surveyed by nano-indentation tester. The results show that the surface of W film is very compact and smooth; the particles arranged regularly, the granularity of the thin film is about 1 lm. The microcracks, cavities and desquamation were not found in the film and interface, and the bonding between the W film and substrate is well. The XRD results showed that the W film had a body-centered cubic structure, the lattice constant: a = 0.316 nm, the growth preferred orientations are (110) and (220). The compressive stress (169 MPa) was found on the surface. The average nano-hardness and elastic modulus of W film are 15.22 GPa, 176.64 GPa, respectively, and the mechanical properties of W film are well.

Item Type:Article
Subjects:Material Science > Nanostructured materials
ID Code:5010
Deposited By:CSMNT
Deposited On:18 Apr 2009 08:36
Last Modified:18 Apr 2009 08:36

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