Fabrication and tribological properties of B2O3 as friction reducing coatings for carbon-carbon composites

被引：46

作者：

Hu Zhi-biao ^{[1
]}

Li He-jun ^{[1
]}

Fu Qian-gang ^{[1
]}

Xue Hui ^{[1
]}

Sun Guo-ling ^{[1
]}

机构：

[1] Northwestern Polytech Univ, CC Composites Res Ctr, Key Lab Ultrahigh Temp Composites, Xian 710072, Peoples R China

来源：

NEW CARBON MATERIALS | 2007年 / 22卷 / 02期

关键词：

C/C composite; B2O3; friction coefficient; wear;

D O I：

10.1016/S1872-5805(07)60013-4

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

B2O3 lubricating coatings for the SiC coated C/C composites were prepared by a slurry brushing method. The morphologies, components, and structure of the as-prepared coatings were characterized by SEM and XRD. The friction coefficient of the coatings was also tested. The lubricating mechanism of the coating is discussed. Results show that the friction coefficient of the coatings is 0.06-0.08, which is less than that of the carbon/carbon composites (0.15-0.18). The decrease of the friction coefficient of C/C composites after adding a SiC/B2O3 coating is attributed to the formation of a lubricious layer of boric acid from the boron oxide after exposure to the moisture in air.

引用

页码：131 / 134

页数：4

共 10 条

[1] Tribology of naturally occurring boric acid films on boron carbide [J].