Tribochemical Behavior of Si<sub>3</sub>N<sub>4</sub>-hBN Ceramic Materials with Water Lubrication

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Tribochemical Behavior of Si₃N₄-hBN Ceramic Materials with Water Lubrication

更新时间：2025-07-09

- Tribochemical Behavior of Si₃N₄-hBN Ceramic Materials with Water Lubrication
- Vol. 43, Issue 9, Pages: 75-80(2009)
- 作者机构：
  
  西安交通大学金属材料强度国家重点实验室,西安,710049
- 作者简介：
- 基金信息：
- DOI：
  CLC： TH117.1
- Online First：10 September 2009，
  
  Published：2009
- 稿件说明：
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Tribochemical Behavior of Si₃N₄-hBN Ceramic Materials with Water Lubrication[J]. 2009, 43(9): 75-80.
DOI：

Tribochemical Behavior of Si₃N₄-hBN Ceramic Materials with Water Lubrication[J]. 2009, 43(9): 75-80. DOI：

摘要

利用MMU-5G销-盘式端面磨损试验机考察了蒸馏水润滑条件下Si

-hBN(六方氮化硼)复合陶瓷与Si

陶瓷配副时的摩擦磨损性能

并分别采用扫描电子显微镜、激光扫描显微镜、X光电子能谱和X射线能谱分析了摩擦面的形貌和物质组成.结果表明:在滴定法水润滑条件下

-hBN/Si

配副的摩擦因数随hBN含量的增加而显著降低

当hBN体积分数为20%时

摩擦因数降至0.01

-hBN的磨损率接近0; 在浸入法水润滑条件下

-hBN/Si

配副的摩擦因数均降至0.01.在滴定法水润滑条件下

磨屑不易被水带走

当Si

-hBN与Si

配副摩擦时

由于Si

-hBN摩擦面上hBN偏聚区域发生脆性断裂和剥落而形成剥落坑

磨屑在剥落坑中堆积并氧化、水解

反应产物富集于剥落坑中

进而在摩擦表面形成含B

和SiO

的摩擦化学反应膜

从而保护了Si

-hBN和Si

摩擦面

使其变得光滑

为发生流体润滑提供了条件.

Abstract

The tribological behavior of Si

-hBN composites with different hexagonal boron nitride(hBN)volume fractions under distilled water lubrication was investigated. Water-lubricated sliding tests were conducted on a pin-on-disc tester. The results show that the addition of hBN into Si

matrix significantly decreased the friction coefficient from

0.30 for Si

against Si

pair to 0.01 for Si

-20%hBN against Si

pair under titrimetric water lubrication

and the friction coefficient of Si

-hBN/Si

pair decreased to 0.01 in water. The morphological analysis and chemical characterization of the worn surfaces via scanning electron microscopy

laser scanning microscope

and X-ray photoelectron spectroscopy reveal that under titrimetric water lubrication

the hBN in Si

-hBN spalled off during the wearing tests and the spalled pits formed on the wearing surface of Si

-hBN

and then the debris dropped into the pits to react with water

thus a tribochemical film formed on the wearing surface. The formation of the tribochemical film facilitated smoothing the surfaces of Si

-hBN and Si

to create a fine lubrication environment.

关键词

Keywords

references

SKOPP A, WOYDT M, HABIG K H. The effect of tribofilm formation on the tribological characteristics of ceramic-cast iron sliding pairs [J]. Wear, 1997, 210: 1-7.

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Tribochemical Behavior of Si3N4-hBN Ceramic Materials with Water Lubrication

DOI：

摘要

Abstract

关键词

Keywords

references

Tribochemical Behavior of Si₃N₄-hBN Ceramic Materials with Water Lubrication