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https://hdl.handle.net/10316/27171
Title: | Indentation and scratch testing of DLC-Zr coatings on ultrafine-grained titanium processed by high-pressure torsion | Authors: | Wang, Chuan Ting Escudeiro, Ana Polcar, Tomas Cavaleiro, Albano Wood, Robert J. K. Gao, Nong Langdon, Terence G. |
Keywords: | High-pressure torsion; Titanium; DLC-Zr coatings; Adhesion; Bio-implants | Issue Date: | 30-Aug-2013 | Publisher: | Elsevier | Citation: | WANG, Chuan Ting [et al.] - Indentation and scratch testing of DLC-Zr coatings on ultrafine-grained titanium processed by high-pressure torsion. "Wear". ISSN 0043-1648. Vol. 306 Nº. 1-2 (2013) p. 304-310 | Serial title, monograph or event: | Wear | Volume: | 306 | Issue: | 1-2 | Abstract: | High-pressure torsion was employed to refine the microstructure of grade 2 Ti under an imposed pressure of 3.0 GPa at room temperature. The microhardness of grade 2 Ti increased from 1.82 GPa for the coarse grain state to 3.05 GPa after high-pressure torsion processing, where this value is very close to the hardness of the Ti–6Al–4V alloy. Subsequently, several diamond-like carbon (DLC) coatings with thicknesses of ∼1.4 μm were deposited on as-received Ti, high-pressure torsion processed Ti and Ti–6Al–4V samples via physical vapour deposition. Both indentation and scratch tests showed a much improved adhesion of DLC-7Zr, DLC:H-7Zr and DLC-9Zr coatings with high-pressure torsion processed Ti as the substrate by comparison with the same coatings on coarse-grained Ti. The results suggest that commercial pure Ti processed by high-pressure torsion and coated with a diamond-like carbon coating provides a potential candidate material for bio-implant applications. | URI: | https://hdl.handle.net/10316/27171 | ISSN: | 0043-1648 | DOI: | 10.1016/j.wear.2012.12.033 | Rights: | openAccess |
Appears in Collections: | I&D CEMMPRE - Artigos em Revistas Internacionais FCTUC Eng.Mecânica - Artigos em Revistas Internacionais |
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Indentation and Scratch Testing of DLC-Zr coatings.pdf | 882.84 kB | Adobe PDF | View/Open |
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