Structural characterisation of oxygen diffusion hardened alpha-tantalum PVD-coatings on titanium

被引:19
|
作者
Hertl, C. [1 ]
Koll, L. [1 ]
Schmitz, T. [2 ]
Werner, E. [1 ]
Gbureck, U. [2 ]
机构
[1] Tech Univ Munich, Lehrstuhl Werkstoffkunde & Werkstoffmech, D-85748 Garching, Germany
[2] Univ Wurzburg, Dept Funct Mat Med & Dent, D-97070 Wurzburg, Germany
关键词
Metal surface treatment; Titanium; Diffusion; Oxidation; Magnetron sputtering; Physical vapour deposition; Surface hardening; CP-TITANIUM; SURFACE; MICROSTRUCTURE; ALLOYS; LAYERS; TI;
D O I
10.1016/j.msec.2014.03.018
中图分类号
TB3 [工程材料学]; R318.08 [生物材料学];
学科分类号
0805 ; 080501 ; 080502 ;
摘要
Titanium substrates were coated with tantalum layers of 5 pm thickness using physical vapour deposition (PVD). The tantalum layers showed a (110)-preferred orientation, The coated samples were hardened by oxygen diffusion. Using X-ray diffraction the crystallographic structure of the tantalum coatings was characterised, comparing untreated and diffusion hardened specimen conditions. Oxygen depth profiles were determined by glow discharge spectrometry. The hardening effect of the heat treatment was examined by Vickers microhardness testing. The increase of surface hardness caused by oxygen diffusion was at least 50%. (C) 2014 Elsevier B.V. All rights reserved.
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页码:28 / 35
页数:8
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