通过低温烧结在灰口铸铁上制备高性能搪瓷涂层

Development of High-Performance Enamel Coating on Grey Iron by Low-Temperature Sintering.

作者信息

Song Dan, Tang Ren, Yang Falin, Qiao Yanxin, Sun Jiapeng, Jiang Jinghua, Ma Aibin

机构信息

College of Mechanics and Materials, Hohai University, Nanjing 210098, China.

Suqian Research Institute of Hohai University, Suqian 223800, China.

出版信息

Materials (Basel). 2018 Nov 4;11(11):2183. doi: 10.3390/ma11112183.

DOI:10.3390/ma11112183

PMID:30400378

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6266714/

Abstract

In this study, we report on a low-temperature sintered enamel coating with a high-strength bonding and wear-resistance that protected a grey cast iron substrate. The SiO₂⁻Al₂O₃⁻B₂O₃ composited prescription for the enamel coating was modified by the partial substitutions of SiO₂ for B₂O₃ and alkali metals for Li₂O. The optimized enamel coating was prepared by sintering at a relatively low temperature (730 °C) for seven minutes. Due to the composition of both the amorphous and crystalline phases, the enamel coating presented sufficient hardness and excellent wear resistance. The wear volume loss and the specific wear rate of the enamel coating were obviously lower than that of the metal substrate. The enamel coating can effectively improve the service life of the grey cast iron substrate in a complex frictional environment.

摘要

在本研究中，我们报道了一种低温烧结的搪瓷涂层，该涂层具有高强度结合力和耐磨性，可保护灰铸铁基体。通过用B₂O₃部分替代SiO₂以及用碱金属替代Li₂O，对搪瓷涂层的SiO₂⁻Al₂O₃⁻B₂O₃复合配方进行了改性。通过在相对较低的温度（730°C）下烧结7分钟制备了优化的搪瓷涂层。由于非晶相和结晶相的组成，搪瓷涂层具有足够的硬度和优异的耐磨性。搪瓷涂层的磨损体积损失和比磨损率明显低于金属基体。搪瓷涂层可以有效提高灰铸铁基体在复杂摩擦环境中的使用寿命。