MgO-C耐火材料受载损伤过程的声发射特性研究  

Research on acoustic emission characteristics of MgO-C refractories during loading damage test

作　　者：赵尧杰[1] 王志刚[1] 刘昌明[1] 韩兵强[2] 

机构地区：[1]武汉科技大学冶金装备及其控制教育部重点实验室,湖北武汉430081 [2]武汉科技大学高温陶瓷与耐火材料省部共建国家重点实验室培育基地,湖北武汉430081

出　　处：《耐火材料》2012年第4期254-257,共4页Refractories

基　　金：国家自然科学基金资助项目(51075310);教育部重点项目(211115)

摘　　要：为了弄清MgO-C耐火材料的损伤演化过程及破坏形式,利用声发射技术研究了MgO-C耐火材料受载破坏过程中的声发射现象,通过信号分析方法,对声发射信号功率谱的质心频率和声发射能量历程图进行了分析。结果表明:MgO-C耐火材料的受载破坏过程分为4个阶段,主要的损伤形式为基质损伤和界面损伤。In order to investigate the the acoustic emission phenomenon damage evolution process and of MgO-C refractories during damage form of MgO-C refractories, the loading damage process was researched using acoustics emission technique, the centroid frequency of acoustic emission signal power spectrum and acoustic emission energy flow chart were analyzed by signal analysis method. The experimental analysis shows that the loading damage process of MgO-C refractories is divided into four phases, the main damage forms are matrix damage and interface damage.

关 键 词：镁碳质耐火材料 声发射 质心频率 损伤演化 

分 类 号：TQ125.12[化学工程—无机化工]