Wear-resistant ceramic coating on inner surface of shaft sleeve and preparation method of wear-resistant ceramic coating: Fid-Bau Portal

Wear-resistant ceramic coating on inner surface of shaft sleeve and preparation method of wear-resistant ceramic coating

SONG QINGLEI / YANG YU / SUN YANG / GU YINGJIE / ZHANG PING

Abstract

The invention discloses a wear-resistant ceramic coating on the inner surface of a shaft sleeve and a preparation method of the wear-resistant ceramic coating, and the wear-resistant ceramic coating comprises the following raw materials in parts by mass: 40-65 parts of Al2O3 serving as a ceramic phase and 15-25 parts of SiO2 serving as a glass phase, 20-35 parts of Si3N4 serving as a self-lubricating phase and 3-8 parts of K2O serving as a sintering aid. According to the invention, Al2O3 is adopted as the main component of the coating, and the addition of Al2O3 can provide a hard protective layer, so that the hardness and wear resistance of the coating can be improved; siO2 can effectively improve the physical properties of the coating, improve the wear resistance of the coating and protect the flatness and attractiveness of the surface of the ceramic coating; si3N4 has excellent properties of small mass, self-lubrication, high elastic modulus, corrosion resistance and the like, and the wear resistance and mechanical properties of the coating can be improved by adding Si3N4; k2O is used as a sintering aid, so that the forming temperature of the ceramic coating can be reduced.

本发明公开了一种轴套内表面耐磨陶瓷涂层及其制备方法，按照质量份数，其原料组成为：40～65份作为陶瓷相的Al2O3，15～25份作为玻璃相的SiO2；20～35份作为自润滑相的Si3N4，3～8份作为烧结助剂的K2O。本发明采用Al2O3为涂层主要成分，Al2O3的添加能够提供坚硬的保护层，可以提高涂层的硬度和耐磨性；SiO2能够有效地改善涂层的物理性质并提高其耐磨性，保护陶瓷涂层表面的平整度和美观度；Si3N4具有质量小、自润滑、高弹性模量、耐腐蚀等优异性能，添加可以改善涂层的耐磨性和力学性能；K2O作为烧结助剂，可以降低陶瓷涂层成型温度。

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