稀土氧化物对高钙镁钙材料结构与性能的影响  

Effects of Rare Earth Oxides on the Microstructure and Properties of MgO-CaO Ceramics

作　　者：陆志新[1,2] 于燕文[2] 杨正方[3] 

机构地区：[1]北京科技大学冶金学院,北京100083 [2]上海宝山钢铁股份有限公司,上海200941 [3]天津大学先进陶瓷与加工技术教育部重点实验室,天津300072

出　　处：《稀有金属材料与工程》2008年第A01期651-653,共3页Rare Metal Materials and Engineering

摘　　要：研究了添加剂Y_2O_3对高钙镁钙制品力学、烧结性能及抗水化机理微观结构和性能的影响。添加Y_2O_3 1.0%到高钙镁钙试样基质中,在1650℃煅烧,保温5 h,其常温耐压与高温抗折强度分别达到110 MPa和14 MPa以上。制备了结构致密且抗水化效果优于镁钙空白高钙镁钙材料。The effects of Y2O3 additives on sintering properties, mechanical properties and microstructures of MgO-CaO ceramics were studied. The MgO-CaO ceramics with 1.0 wt% Y2O3 sintered at 1650 ℃ for 5 h exhibited the compressive strength of 110 MPa, the high temperature fracture strength of 14 MPa and reduced hydration rate comparing to the Y2O3-free ceramics.

关 键 词：稀土氧化物 高钙镁钙材料 烧结性 抗水化性 

分 类 号：TQ175[化学工程—硅酸盐工业]