Wear Resistance of TiAlSiN Thin Coatings

• Type: Article in International Scientific Journal
• Date: 2012

Authors

Silva, FJG (Author) Other; Martinho, RP (Author) Other; Alexandre, RJD (Author) Other; Baptiste, APM (Author) FEUP

Journal

Title: Journal of Nanoscience and Nanotechnology

Vol. 12

Pages: 9094-9101

ISSN: 1533-4880

Publisher: American Scientific Publishers

Indexing

ISI Web of Knowledge - 1 Citation

Scopus - 1 Citation

Scientific classification

FOS: Engineering and technology > Materials engineering

Other information

Authenticus ID: P-002-2FF

DOI: 10.1166/jnn.2012.6760

Abstract (EN): In the last decades TiAlN coatings deposited by PVD techniques have been extensively investigated but, nowadays, their potential development for tribological applications is relatively low. However, new coatings are emerging based on them, trying to improve wear behavior. TiAlSiN thin coatings are now investigated, analyzing if Si introduction increases the wear resistance of PVD films. Attending to the application, several wear test configurations has been recently used by some researchers. In this work, TiAlSiN thin coatings were produced by PVD Unbalanced Magnetron Sputtering technique and they were conveniently characterized using Scanning Electron Microscopy (SEM) provided with Energy Dispersive Spectroscopy (EDS), Atomic Force Microscopy (AFM), Electron Probe Micro-Analyzer (EPMA), Micro Hardness (MH) and Scratch Test Analysis. Properties as morphology, thickness, roughness, chemical composition and structure, hardness and film adhesion to the substrate were investigated. Concerning to wear characterization, two very different ways were chosen: micro-abrasion with ball-on-flat configuration and industrial non-standardized tests based on samples inserted in a feed channel of a selected plastic injection mould working with 30% (wt.) glass fiber reinforced polypropylene. TiAlSiN coatings with a small amount of about 5% (wt.) Si showed a similar wear behavior when compared with TiAlN reported performances, denoting that Si addition does not improve the wear performance of the TiAlN coatings in these wear test conditions.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 8