Deposition of alumina coatings on stainless steel by a combined laser/sol-gel technique

被引：6
|
作者：
Adraider, Y. [1 ]
Pang, Y. X. [1 ]
Nabhani, F. [1 ]
Hodgson, S. N. [1 ]
Sharp, M. C. [2 ]
Al-Waidh, A. [2 ]
机构：
[1] Univ Teesside, Sch Sci & Engn, Middlesbrough TS1 3BA, Cleveland, England
[2] Liverpool John Moores Univ, Gen Engn Res Inst, Liverpool L3 3AF, Merseyside, England
来源：
MATERIALS LETTERS | 2013年 / 91卷
关键词：
Alumina coatings; Fibre laser; Aluminium oxide; AISI304; substrates; OXIDE; WEAR;
D O I：
10.1016/j.matlet.2012.09.082
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Fibre laser (wavelength 1064 nm) was employed to deposit sol-gel alumina coatings onto stainless steel substrates. The alumina coatings were applied on the surface of the substrates in wet conditions and then irradiated using fibre laser at various energies to precipitate the alumina coating from its sol-gel solution onto substrates. The results showed that the deposited alumina coating at laser energy density of 87 J/mm(2) crystallised in gamma-Al2O3; however, the increase of the laser energy density at 173.9 J/mm(2) led to the deposition of alpha-Al2O3. Nano-indentation measurements demonstrate that the mechanical properties of laser-deposited alumina coatings in terms of hardness and Young's modulus are improved in comparison with as-dried alumina coating without laser irradiation. (c) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：88 / 91
页数：4
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