退火制度对一次烧结法制取微晶玻璃裂缝的影响  

Effect of the Annealing Treatment of the Metal Tailings Glass-Ceramic Produced by One Time Sintering Forging on Cracks

作　　者：刘军[1] 欧洋[1] 徐长伟[1] 戚红[1] 

机构地区：[1]沈阳建筑大学材料科学与工程学院,辽宁沈阳110168

出　　处：《沈阳建筑大学学报（自然科学版）》2008年第4期610-615,共6页Journal of Shenyang Jianzhu University：Natural Science

基　　金：辽宁省优秀青年科研人才培养基金项目(3040013)

摘　　要：目的研究退火制度对一次烧结法制取铁尾矿建筑微晶玻璃裂缝产生的影响.方法通过差热分析、扫描电镜、抗折强度的分析与正交试验优化设计,对一次烧结法制取铁尾矿建筑微晶玻璃退火制度进行优化.结果退火制度对一次烧结法制取铁尾矿建筑微晶玻璃的裂缝的主要影响因素:退火温度、退火时间、降温速率,其顺序:退火温度>退火时间>降温速率,最佳退火制度:退火温度600℃,退火时间7 h,然后随炉冷却.结论合理的退火制度可以减少微晶玻璃在退火过程中的应力产生,消除裂缝,使晶体生长更加完整,排列更加规则,同时晶相与玻璃相咬合更加紧密,从面提高产品的机械性能.The effect of the annealing treatment of the metal tailings architecture - glass- ceramic produced by one time sintering forging on cracks is researched. The annealing treatment is optimized via analyzing DTA, SEM, breaking strength testing and orthogonal experiment. The key factors that affect the cracks of the iron tailings architecture - glass - ceramic produced by one time sintering forging is annealing temperature, annealing time, cooling rate. The better annealing treatment is achieved. The annealing temperature is 600 ℃, then furnace cooling after 7 hours. The rational annealing treatment can relieve stress and cracks of the glass - ceramics. The crystal grows completely, with more queuing discipline. The annealing treatment can increase breaking strength.

关 键 词：退火制度 铁尾矿 建筑微晶玻璃 一次烧结法 裂缝 

分 类 号：TU564[建筑科学—建筑技术科学]