磷酸铝铬溶液对Al_2O_3-ZrO_2-SiO_2耐磨体系的影响  

The effects of chrome aluminum phosphate solution on the Al_2O_3-ZrO_2-SiO_2 wearable system

作　　者：王珏[1] 刘晓东[1] 于倩[1] 刘洪成[1] 张晓臣[1] 

机构地区：[1]黑龙江省科学院高技术研究院,哈尔滨150020

出　　处：《黑龙江科学》2015年第4期12-15,共4页Heilongjiang Science

摘　　要：针对煤粉、热力管道高温气体冲蚀及爆管问题，以氧化铝、二氧化锆、二氧化硅和磷酸铝铬溶液为主要原料，制备了一种涂覆耐磨材料，通过剪切测试研究了磷酸铝铬溶液对涂覆耐磨材料黏结性能的影响，应用DSC、TG、SEM等测试手段对硬化反应的热力学行为、硬化成型材料热失重的和微观形貌进行分析。结果表明：添加磷酸铝铬溶液可使剪切强度提高，添加10%磷酸铝铬溶液后常温剪切强度可达3.43MPa，但是成型材料的密度有所下降，与未添加磷酸铝铬溶液的成型材料相比，添加10%磷酸铝铬溶液后成型材料密度下降30%。硬化反应主要发生在140℃-150℃，材料成型后经过500℃处理1h固相颗粒间有烧结作用，剪切强度平均下降40%，800℃失重率小于10%。A kind of coating wearable material was prepared using aluminum oxide, zirconium dioxide, silicon dioxide and chrome aluminum phosphate solution as the main raw material for the high temperature gas erosion and burst problem on the pipeline of pulverized coal and heat power. The effects of chrome aluminum phosphate solution on the adhesive property of coating wearable material were researched by shearing test. The thermo-mechanical behavior of hardening reaction, the thermal weight loss and the micro-topography of the formed material were analyzed using DSC, TG and SEM. The results showed that the shear strength increased with adding chrome aluminum phosphate solution, and the material with adding 10% chrome aluminum phosphate solution showed the shear strength of 3.43MPa, however the density of the formed material decreased, the density of the formed material with adding 10wt% chrome aluminum phosphate solution decreased 30% compared with the formed material without adding chrome aluminum phosphate solution. The hardening reaction occurred mainly between 140℃-150℃. The shear strength decreased 40% on average of the material and solid particles had sintering effect after heat treatment 1 hour at 500℃. The weight loss rate was less than 10%at 800℃.

关 键 词：磷酸铝铬溶液 涂覆耐磨材料 Al2O3-ZrO2-SiO2耐磨体系 

分 类 号：TQ174.7[化学工程—陶瓷工业]