耐高温填料及增强纤维对材料抗热震性能的影响  

Effect of High-Temperature Resistant Filler and Reinforcing Fibre on Anti-Heat Shock Performance of Material

作　　者：谢鸽平[1] 黄春雨 陈昌平[1] 刘秀生[1] 张迎平[1] 刘兰轩[1] 李斌[1] 

机构地区：[1]武汉材料保护研究所,湖北武汉430030 [2]铁道部驻武昌车辆厂车辆验收室,湖北武汉430062

出　　处：《材料保护》2008年第8期7-8,15,共3页Materials Protection

摘　　要：高温下金属设备易腐蚀,涂层抗热震性能较差,其使用寿命受到影响。以无机粘接剂为成膜物,金属氧化物为固化剂,加入耐高温填料、增强纤维和添加剂,混合分散均匀,成功制备了一种抗热震性能良好的耐高温钢铁包覆材料。测试了包覆层的显微结构,分析了耐高温填料、增强纤维等对包覆层性能的影响。结果显示:涂覆于钢铁表面的材料经过25次冷热交替试验,抗弯强度保持率在70%以上;材料中的耐高温填料使包覆层的热膨胀系数降低,有助于热流传递,减少了热冲击;增强纤维有利于各物料的连接,提高了包覆层的抗热震性能。The service life of metal equipments at high temperature is shortened by poor corrosion resistance and anti-heat shock performance.Thus a material with good anti-heat shock performance for iron and steel was prepared using an inorganic adhesive as the film-forming substance and metal oxide as the curing agent in the presence of high temperature resistant filler,reinforcing fibre,and additives.The microstructure of the material was analyzed,while the effects of the high temperature resistant filler and reinforcing fibre on the performance of the coating were investigated.Results showed that the bend strength of the coating was attained up to a rate of over 70% after 25 cycle of alternate cold and hot tests.This was because the coefficient of thermal expansion of the coating was lowered by the high temperature resistant filler,which contributes to enhancing heat transfer and decreasing heat-shock.Moreover,the reinforcing fiber also contributed to improving the anti-heat shock performance of the material.

关 键 词：包覆材料 包覆层 抗热震性能 耐高温填料 增强纤维 

分 类 号：TG174.4[金属学及工艺—金属表面处理]