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EFFECT OF SUBSTRATE BIAS VOLTAGE ON THE MICROSTRUCTURAL AND MECHANICAL PROPERTIES OFTiN-COATED HSS SYNTHESIZED BY CAPVD TECHNIQUE

Author

Listed:
  • MUBARAK ALI

    (Department of Materials Engineering, Faculty of Mechanical Engineering, Universiti Teknologi Malaysia, 81310, Skudai, Johor, Malaysia)

  • ESAH BINTI HAMZAH

    (Department of Materials Engineering, Faculty of Mechanical Engineering, Universiti Teknologi Malaysia, 81310, Skudai, Johor, Malaysia)

  • MOHD RADZI HJ. MOHD TOFF

    (Advanced Materials Research Center (AMREC), SIRIM Berhad, Lot 34, Jalan Hi-Tech 2/3, Kulim Hi-Tech Park, 09000 Kulim, Kedah, Malaysia)

Abstract

Titanium nitride(TiN)films were deposited on high-speed steel (HSS) using cathodic arc physical vapor deposition (CAPVD) technique. The effect of substrate bias on the crystallography, microstructure, deposition rate, coating thickness and composition, hardness, and adhesion strength ofTiNfilms was investigated. The crystallography of the films was investigated using X-ray diffraction with glazing incidence angle technique. The coating microstructure and elemental composition analysis were carried out using field emission scanning electron microscopy (FE-SEM) together with energy-dispersive X-ray. Crystallography of the films revealed that the effect of substrate bias shows complex symmetry in crystal structure. The resputtering effect due to the high-energy ion bombardment on the film surface influenced the thickness as well as the color of deposited coatings. By increasing the substrate bias from 0 to - 150 V, the size and amount of macrodroplets decreased, whereas the micro-Vickers hardness decreased from 2530 HV0.05to 1500 HV0.05. Scratch tester used to compare the critical loads for coatings and the adhesion achievable at substrate bias of - 50 V was demonstrated, with relevance to the various modes.

Suggested Citation

  • Mubarak Ali & Esah Binti Hamzah & Mohd Radzi Hj. Mohd Toff, 2006. "EFFECT OF SUBSTRATE BIAS VOLTAGE ON THE MICROSTRUCTURAL AND MECHANICAL PROPERTIES OFTiN-COATED HSS SYNTHESIZED BY CAPVD TECHNIQUE," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 13(05), pages 621-633.
  • Handle: RePEc:wsi:srlxxx:v:13:y:2006:i:05:n:s0218625x0600858x
    DOI: 10.1142/S0218625X0600858X
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