Title

Deposition of nanocomposite thin films by a hybrid cathodic arc and chemical vapour technique

Document Type

Journal Article

Faculty

Faculty of Computing, Health and Science

School

School of Engineering

RAS ID

8940

Comments

Bendavid, A., Martin, P. J., Preston, E. W., Cairney, J., Xie, Z. H., & Hoffman, M. (2006). Deposition of nanocomposite thin films by a hybrid cathodic arc and chemical vapour technique. Surface and Coatings Technology, 201(7), 4139-4144.

Abstract

A hybrid technique is described for the synthesis of nanocomposite Ti–Si–N thin films based on the reactive deposition of Ti produced from a cathodic arc source and silicon from a liquid tetramethylsilane (TMS), precursor. The influence of the TMS flow rate on the structure and mechanical properties has been investigated. The film structure was found to comprise TiN crystallites and amorphous Si3N4. The X-ray diffraction data showed that with increasing TMS flow there is a decrease in the TiN crystalline size from 33 nm to 4 nm. The hardness of the films was found to be strongly dependent on the Si content and reached a maximum value of 41 GPa at ∼ 5% Si content at a total pressure of nitrogen and TMS of 0.8 Pa. Hardness enhancement was found to arise from the nanostructural change induced due to the addition of an amorphous Si3N4 phase into the film. Transmission electron microscopy (TEM) analysis confirmed the structure of the Ti–Si–N composites.

DOI

10.1016/j.surfcoat.2006.08.021

 
COinS
 

Link to publisher version (DOI)

10.1016/j.surfcoat.2006.08.021