Electron spectroscopic studies of nanocomposite PVD TiAlBN coatings

被引：22

作者：

Baker, MA ^{[1
]}

Rebholz, C

Leyland, A

Matthews, A

机构：

[1] Univ Surrey, Sch Mech & Mat Engn, Guildford GU2 7XH, Surrey, England

[2] Univ Hull, Res Ctr Surface Engn, Kingston Upon Hull HU6 7RX, N Humberside, England

来源：

VACUUM | 2002年 / 67卷 / 3-4期

关键词：

Tialbn; nanocomposite; coating; XPS; TEM;

D O I：

10.1016/S0042-207X(02)00233-6

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A range of TiAlBN coatings have been deposited by electron beam evaporation and the optimised composition exhibits a 150% improvement over single phase TiAlN coatings in drilling tests. The coatings have been analysed by core level XPS to investigate the phase composition and bonding. Grain sizes have been determined by TEM. Al substitutes into the TiN phase and the coatings show a phase composition in agreement with that predicted by the (Ti,Al)BN equilibrium phase diagram. The optimum microstructure for wet drilling applications consists of 26 nm (Ti,Al)N grains separated by 3 nm regions of amorphous BN. As the grain size increases, a new B Is component ;develops, attributable to B either incorporated into the (Ti,AI)N phase or located at grain boundaries. (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：471 / 476

页数：6

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