TiAlN/VN superlattice structured PVD coatings: A new alternative in machining of aluminium alloys for aerospace and automotive components

被引：100
作者：
Hovsepian, P. Eh.
Luo, Q. [1 ]
Robinson, G.
Pittman, M.
Howarth, M.
Doerwald, D.
Tietema, R.
Sim, W. M.
Deeming, A.
Zeus, T.
机构：
[1] Sheffield Hallam Univ, Mat & Engn Res Inst, Sheffield S1 1WB, S Yorkshire, England
[2] Hauzer Techno Coating BV, NL-5928 LL Venlo, Netherlands
[3] Airbus UK Ltd, Bristol BS99 7AR, Avon, England
[4] Hydra Clarkson Int, Sheffield S6 3AH, S Yorkshire, England
[5] Emuge Werk Richard Glimpel GmbH & Co KG, D-91207 Lauf, Germany
来源：
SURFACE & COATINGS TECHNOLOGY | 2006年 / 201卷 / 1-2期
关键词：
PVD; superlattice coatings; TiAlN/VN; aluminium alloy cutting; tool wear;
D O I：
10.1016/j.surfcoat.2005.11.106
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
A 3 mu m thick superlattice structured TiAlN/VN coating has been deposited by the steered cathodic arc/unbalanced magnetron sputtering technique. The coating has been tested in dry high-speed milling of aluminium alloys Al7010-T7651 and AlSi9Cu1 and the performance compared to that of the diamond-like carbon (DLC) coated, TiAlCrYN coated and uncoated tools. In milling the Al7010-T7651 alloy, TiAIN/VN and DLC coated tools showed comparable performance, outperforming TiAlCrYN coated and uncoated tools by a factor of 2.3 and 3.5, respectively. In the case of milling AlSi9Cu1, the DLC coatings failed to produce any lifetime improvement, TiAlCrYN showed similar to 65% longer lifetime thus rendering TiAlN/VN as the best performing coating with 100% longer lifetime compared to that of the uncoated tools. The tests further showed that TiAlN/VN reduces the cutting forces and improves the surface finish. Scanning electron microscopy of the cutting edge carried out after the cutting tests showed that the TiAlN/VN coating significantly reduces metal transfer and built-up edge formation. (c) 2005 Elsevier B.V. All rights reserved.
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收藏
页码：265 / 272
页数：8
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