硅酸盐通报2025，Vol.44Issue(1)：343-352,387,11.DOI:10.16552/j.cnki.issn1001-1625.2024.0878
Y2O3/ZrO2对MgO-CaO耐火材料性能的影响
Effect of Y2O3/ZrO2 on Properties of MgO-CaO Refractory
摘要
Abstract
MgO-CaO refractories have a broad application prospect as furnace lining materials for clean steel and special steel smelting due to their good high temperature resistance and ability to purify steel.However,these materials still have problems such as difficult sintering,easy hydration and mechanical properties need to be improved.In this work,Y2O3/ZrO2 co-doped MgO-CaO refractories were prepared by comparing with Y2O3 and ZrO2 single-doped MgO-CaO refractories.The effect of Y2O3/ZrO2 introduction on the microstructure and properties of materials was investigated.The results show that some Y2 O3 dissolves into the CaO lattice,while other Y2 O3 locates at the intergranular region in the Y2 O3 single-doped MgO-CaO materials.The intergranular Y2O3 hinders the sintering of the material.When a small amount of ZrO2 is synergistically introduced,the density of the material increases,and the room temperature flexural strength and hydration resistance are improved.This is due to the in-situ generated CaZrO3 filling in the voids,which is favourable to the sintering properties of the materials.However,when excessive ZrO2 is introduced,more CaZrO3 generates in the materials,and the significant volume expansion leads to the increase of apparent porosity,leading to a decrease in the mechanical properties and hydration resistance of the materials.关键词
镁钙质耐火材料/氧化钇/掺杂/显微结构/抗水化性能Key words
MgO-CaO refractoy/yttrium oxide/doping/microstructure/hydration resistance分类
化学化工引用本文复制引用
靳虎林,马妍,王周福,邓承继,王玺堂,刘浩,董云洁,童光大,付卫东..Y2O3/ZrO2对MgO-CaO耐火材料性能的影响[J].硅酸盐通报,2025,44(1):343-352,387,11.基金项目
国家自然科学基金区域联合基金项目(U20A20239,U21A2057) （U20A20239,U21A2057）
2023年度湖北省技术创新计划重点研发专项(2023BEB017) （2023BEB017）
2023年隆中人才支持计划(23) （23）
