Friction and wear behavior of carbon fiber reinforced lithium aluminosilicate composites sliding against GCr15 steel

Haibao Ma,Xin Wu,Guangwu Wen,Long Xia,Feng Gao,Zhiwei Yang,Li Xiong,Longnan Huang,Bo Zhong,Hua Yang,Tao Zhang

doi:10.1007/s40544-019-0322-2

Abstract

Carbon fibers reinforced lithium aluminosilicate matrix composites (Cf/LAS) were prepared by slurry infiltration combined with a hot press procedure. The friction, wear behavior, and wear mechanisms of Cf/LAS composites under dry sliding conditions were investigated. The results show that the coefficient of friction (COF) initially increased with the increase in carbon fiber content, and reached the maximum value of 0.20 for the 33%Cf/LAS composite. The COF increased sharply with increasing sample temperature from RT to 300 °C. The COF remained stable in the temperature range of 300–500 °C. The two wear mechanisms of LAS glassceramics are fatigue wear and abrasive wear. The Cf/LAS composites demonstrate slight spalling and shallow scratches. These results show that carbon fibers improve the mechanical properties and wear resistance of Cf/LAS composites.

Highlights

The rapid development of mechanical engineering has led to the widespread use of gear transmission systems in various fields such as the textile industry, automobile industry, and aviation industry [1−3]
The amorphous carbon diffraction peak can be seen in the X-ray diffraction (XRD) pattern, but it is not labeled because it is not related to the experiment
The increase in carbon fiber content leads to an obvious increase in the porosity of Carbon fiber (Cf) /lithium aluminosilicate (LAS) composites

Summary

Introduction

The rapid development of mechanical engineering has led to the widespread use of gear transmission systems in various fields such as the textile industry, automobile industry, and aviation industry [1−3]. These conventional gears have difficulty in meeting stricter stability, accuracy, and safety standards due to the nature of certain metals and alloys. Ceramic materials are ideal for a variety of wearresistant and structural applications due to their unique mechanical properties, such as high hardness, moderate fracture toughness, excellent high-temperature wear and corrosion resistance, and high chemical stability [4−7]. The addition of fibers or whiskers to LAS glass-ceramic substrates to make fiber-reinforced composites has been proven to be very effective in improving toughness [17−21]

Methods

Results

Conclusion