Mechanical and Tribological Characterization of TiB2 Thin Films

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

Authors

Silva, FJG (Author) Other; Casais, RCB (Author) Other; Martinho, RP (Author) Other; Baptista, APM (Author) FEUP

Journal

Title: Journal of Nanoscience and Nanotechnology

Vol. 12

Pages: 9187-9194

ISSN: 1533-4880

Publisher: American Scientific Publishers

Indexing

ISI Web of Knowledge - 0 Citations

Scopus - 0 Citations

Scientific classification

FOS: Engineering and technology > Materials engineering

Other information

Authenticus ID: P-002-2FH

DOI: 10.1166/jnn.2012.6759

Abstract (EN): Titanium Diboride (TiB2) presents high mechanical and physical properties. Some wear studies were also carried out in order to evaluate its tribological properties. One of the most popular wear tests for thin films is the ball-cratering configuration. This work was focused on the study of the tribological properties of TiB2 thin films using micro-abrasion tests and following the BS EN 1071-6: 2007 standard. Due to high hardness usually patented by these films, diamond was selected as abrasive on micro-abrasion tests. Micro-abrasion wear tests were performed under five different durations, using the same normal load, speed rotation and ball. Films were deposited by unbalanced magnetron sputtering Physical Vapour Deposition (PVD) technique using TiB2 targets. TiB2 films were characterized using different methods as Scanning Electron Microscopy (SEM), Energy Dispersive X-ray Spectroscopy (EDS), Atomic Force Microscopy (AFM), X-ray Diffraction (XRD), Electron Probe Micro-Analyser (EPMA), Ultra Micro Hardness and Scratch-test Analysis, allowing to confirm that TiB2 presents adequate mechanical and physical properties. Ratio between hardness (coating and abrasive particles), wear resistance and wear coefficient were studied, showing that TiB2 films shows excellent properties for tribological applications.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 8