CaO-Y2O3复合材料的制备及性能研究

硅酸盐通报 ›› 2023, Vol. 42 ›› Issue (4): 1506-1512.

• 陶瓷、玻璃及耐火材料 • 上一篇下一篇

CaO-Y₂O₃复合材料的制备及性能研究

李忠华¹, 颜正国¹, 杨文刚², 郑岐³, 于景坤¹, 袁磊¹

1.东北大学冶金学院,沈阳 110819;
2.中钢集团洛阳耐火材料研究院有限公司,洛阳 471039;
3.中民驰远实业有限公司,营口 115100

收稿日期:2022-11-17 修订日期:2022-12-12 出版日期:2023-04-15 发布日期:2023-04-25
通信作者: 颜正国,讲师。E-mail:yanzg@smm.neu.edu.cn
袁磊,博士,教授。E-mail:yuanl@smm.neu.edu.cn
作者简介:李忠华(1997—),男,硕士研究生。主要从事高温耐火材料方面的研究。E-mail:982159015@qq.com
基金资助:
先进耐火材料国家重点实验室2021年开放课题基金(SKLAR202103);国家自然科学基金(52174302);中央高校基本科研业务费(N2125040)

Preparation and Properties of CaO-Y₂O₃ Composites

LI Zhonghua¹, YAN Zhengguo¹, YANG Wengang², ZHENG Qi³, YU Jingkun¹, YUAN Lei¹

1. School of Metallurgy, Northeastern University, Shenyang 110819, China;
2. Sinosteel Luoyang Refractory Research Institute Co., Ltd., Luoyang 471039, China;
3. Zhongmin Chiyuan Industrial Co., Ltd., Yingkou 115100, China

Received:2022-11-17 Revised:2022-12-12 Online:2023-04-15 Published:2023-04-25

摘要/Abstract

摘要： 分别以Y(NO₃)₃·6H₂O、CaCO₃为钇源和钙源,以CO(NH₂)₂为燃料,采用低温自蔓延燃烧合成(LCS)法制备复合Y₂O₃包覆CaO粉体,合成粉体经煅烧、压制、干燥、烧结后制备出复合CaO-Y₂O₃材料,考察了钙钇摩尔比对复合材料结构及性能的影响。结果表明:所制备的复合粉体具有良好的包覆性。钙钇摩尔比为2∶1时材料物理性能最佳,其相对密度达到96.56%,显气孔率为1.32%,常温耐压强度为270.0 MPa,热震循环5次后试样残余强度保持率为88.39%,大气环境下21 d后的水化增重率为0.75%。

关键词: CaO, Y₂O₃, 耐火材料, LCS法, 抗水化, 致密度

Abstract: Using yttrium nitrate hexahydrate and calcium carbonate as yttrium and calcium sources, and urea as fuel, the Y₂O₃ coating CaO powder were prepared by low temperature self-spreading combustion synthesis (LCS) method. The CaO-Y₂O₃ composites were prepared by calcination, pressing, drying and sintering. The effects of the molar ratio of calcium to yttrium on the structure and properties of composites were investigated. The results show that the prepared Y₂O₃ coating CaO powder has good coating property. When the molar ratio of calcium to yttrium is 2∶1, the physical properties of the material are the best, the relative density is 96.56%, the apparent porosity is 1.32%, the compressive strength at room temperature is 270.0 MPa, the residual strength retention rate of the sample after 5 thermal shock cycles is 88.39%, and the hydration weight gain rate of the sample after 21 d in the atmospheric environment is 0.75%.

Key words: CaO, Y₂O₃, refractory material, LCS method, hydration resistance, density

中图分类号:

TQ175

李忠华, 颜正国, 杨文刚, 郑岐, 于景坤, 袁磊. CaO-Y₂O₃复合材料的制备及性能研究[J]. 硅酸盐通报, 2023, 42(4): 1506-1512.

LI Zhonghua, YAN Zhengguo, YANG Wengang, ZHENG Qi, YU Jingkun, YUAN Lei. Preparation and Properties of CaO-Y₂O₃ Composites[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2023, 42(4): 1506-1512.

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CaO-Y₂O₃复合材料的制备及性能研究

Preparation and Properties of CaO-Y₂O₃ Composites

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