Dry friction and wear behavior of flame-sprayed polyamide1010/n-SiO2 composite coatings

✍ Scribed by Yadong Li; Yizhu Ma; Bing Xie; Shaokui Cao; Zhishen Wu

• Publisher: Elsevier Science
• Year: 2007
• Tongue: English
• Weight: 866 KB
• Volume: 262
• Category: Article
• ISSN: 0043-1648
• DOI: 10.1016/j.wear.2006.11.019

✦ Synopsis

Polyamide1010 (PA1010) and its composite with nanometer-sized silica (PA1010/n-SiO 2 ) coatings were deposited using a flame spray process. The thermal behaviors, mechanical and tribological properties were investigated. The dry friction and wear behaviors of PA1010 and PA1010/n-SiO 2 composite coatings were systematically investigated under dry sliding conditions against TMK rings by wear-test machine of MRH-3 at room environment. The results showed that the addition of nanometer-sized silica could increase the crystallinity of the coatings, improve the mechanical properties of coatings and reduce friction and wear of pure PA1010 effectively. The worn surfaces were examined using a scanning electron microscope (SEM). The wear mechanism of the coatings was explained in terms of plastic deformation, fatigue tearing and adhesive abrasion. In addition, the nanocomposite coating containing 1.5 wt% nanometer-sized silica displayed better properties.