Tribological property of in situ directly nitrided and sintered Al/AlN composite

被引：21

作者：

Kondoh, K ^{[1
]}

Takeda, Y ^{[1
]}

机构：

[1] Sumitomo Elect Ind Ltd, Itami Res Labs, PM Grp, Itami, Hyogo 6640016, Japan

来源：

POWDER METALLURGY | 2000年 / 43卷 / 01期

关键词：

Aluminum alloys - Aluminum compounds - Bonding - Friction - Hydrodynamics - Lubrication - Nitrides - Nitriding - Sintering - Tribology - Wear resistance;

D O I：

10.1179/003258900665826

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

An in situ directly nitrided and sintered Al/AlN composite was developed using a chemical reaction between aluminium and nitrogen gas at temperatures below 823 K. It is clear from SEM and TEM observation that the composite has good bonding of the in situ formed AIN to the aluminium matrix. The composite shows an unusually low friction coefficient (0.004-0.008) under oil lubrication, and also has excellent wear resistance and antiseizure properties when compared with hard anodised aluminium alloys. AIN particles protruding from the matrix create oil microgrooves and which work as oil pits to enhance the formability of oil films. Therefore, it is easy to form hydrodynamic lubrication with continuous oil films on a sliding surface.

引用

页码：69 / 75

页数：7