Deposition of alumina coatings on monocrystalline diamonds by sol-gel techniques

被引：21

作者：

Felde, B ^{[1
]}

Mehner, A ^{[1
]}

Kohlscheen, J ^{[1
]}

Gläbe, R ^{[1
]}

Hoffmann, F ^{[1
]}

Mayr, P ^{[1
]}

机构：

[1] Stiftung Inst Werkstofftechn, D-28359 Bremen, Germany

来源：

关键词：

adhesion; coating; transmission electron microscopy; hardness;

D O I：

10.1016/S0925-9635(00)00490-8

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Machining of steel or iron-based alloys with diamond tools leads to rapid tool failure - probably due to chemical wear. The use of monocrystalline diamond tools has, up to now, been obligatory for precision machining. Coating the diamonds with a thin but hard and chemically inert alumina film may overcome the problem. Alumina coatings were deposited by sol-gel techniques. It was shown that a very thin TiN intermediate layer, deposited by reactive sputtering, results in a good adhesion of the alumina coatings to the monocrystalline diamonds. The microstructure of the coatings was characterized by held-emission scanning electron microscopy (FE-SEM) and by transmission electron microscopy (TEM). The deposited coatings showed a nanocrystalline, dense microstructure. The hardness of the coatings was investigated by ultramicrohardness measurements (UMH). (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：515 / 518

页数：4

共 13 条

[1] DIAMOND COATING OF TITANIUM-ALLOYS [J].