非氧化物对镁质浇注料结构与性能的影响  

INFLUENCES OF NON-OXIDES ON MICROSTRUCTURE AND PROPERTIES OF MAGNESIA CASTABLES

作　　者：李华军 金少虎 王周福[2] 刘浩[2] LI Huajun;JIN Shaohu;WANG Zhoufu;LIU Hao(Shanxi Haoye new material development Co.,Ltd.,Taiyuan 030100,China;State Key Laboratory of Refractories and Metallurgy Jointly Built,Wuhan University of Science and Technology,Wuhan 430081,China)

机构地区：[1]山西昊业新材料开发有限公司,山西太原030100 [2]武汉科技大学省部共建耐火材料与冶金国家重点实验室,湖北武汉430081

出　　处：《铁合金》2022年第3期30-33,37,共5页Ferro-alloys

摘　　要：为了改善镁质浇注料的力学强度和抗渣侵蚀性能,研究了碳化硅、碳化硼的添加对材料不同温度下物相组成、显微结构和性能的影响。结果表明,碳化硅的引入促进了镁橄榄石的原位形成,进而显著提高了浇注料的常温力学强度和高温抗折强度;碳化硅与碳化硼复合引入,高温下碳化硼氧化形成含硼液相包裹在方镁石和镁橄榄石颗粒表面,促进了材料致密化和抗低碱度渣侵蚀的能力。In order to improve the mechanical strength and slag corrosion resistance of magnesia castables,influences of the addition of silicon carbide and boron carbide on the phase composition,microstructure and properties of castables at different temperatures were systematically studied.The results show that silicon carbide promoted the in-si-tu formation of forsterite,and significantly increased the room temperature mechanical strength and high temperature break-off strength of castables.Combined with silicon carbide,boron carbide was oxidized to form boron containing liq-uid phases coated on the surface of periclase and forsterite particles at high temperatures,resulting in the promoted densification of the material and the ability to resist the corrosion of low alkalinity slag.

关 键 词：镁质浇注料 碳化硅 碳化硼 抗渣侵蚀性能 

分 类 号：TF625[冶金工程—钢铁冶金]