HOVSEPIAN, P. E., LUO, Q., ROBINSON, G., PITTMAN, M., HOWARTH, M., DOERWALD, D., TIETEMA, R., SIM, W. M., DEEMING, A. and ZEUS, T. (2006). TiAlN/VN superlattice structured PVD coatings: A new alternative in machining of aluminium alloys for aerospace and automotive components. Surface and Coatings Technology, 201 (1-2), 265-272.Full text not available from this repository.
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.
|Research Institute, Centre or Group:||Materials and Engineering Research Institute > Thin Films Research Centre > Nanotechnology Centre for PVD Research|
Materials and Engineering Research Institute > Materials Analysis and Research Services
|Depositing User:||Ann Betterton|
|Date Deposited:||17 Feb 2010 16:09|
|Last Modified:||10 Sep 2010 12:09|
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