添加锆英石、B4C和焦粉对铝碳质耐火材料抗氧化性能影响

人工晶体学报 ›› 2017, Vol. 46 ›› Issue (5): 880-884.

添加锆英石、B4C和焦粉对铝碳质耐火材料抗氧化性能影响

刘贺;朱凌;李小超;闵鑫;吴小文;刘艳改;房明浩;黄朝晖

中国地质大学(北京)材料科学与工程学院,非金属矿物和固废资源材料化利用北京市重点实验室,矿物材料国家专业实验室,北京 100083

出版日期:2017-05-15 发布日期:2021-01-20
基金资助:
教育部博士点基金博导类(20130022110006);国家自然科学基金(51372232,51472222)

Effect of Zircon, B4C and Coke Additions on Oxidation Resistance Properties of Al2O3-C Refractories

LIU He;ZHU Ling;LI Xiao-chao;MIN Xin;WU Xiao-wen;LIU Yan-gai;FANG Ming-hao;HUANG Zhao-hui

Online:2017-05-15 Published:2021-01-20

摘要/Abstract

摘要： 在Al2O3-C质耐火材料中添加锆英石、B4C和焦炭,通过高温原位反应生成了ZrC-ZrB2-SiC复合非氧化物耐高温物相.采用XRD分析了不同锆英石、B4C和焦炭的添加量与不同烧成温度下反应产物的物相组成,并采用XRD与SEM进一步研究了含有ZrC-ZrB2-SiC复合非氧化物的铝碳质耐火材料的抗氧化性能及其抗氧化的机理.结果表明:当锆英石-焦炭-B4C混合粉体的加入量为20;,在1550 ℃保温3 h能在铝碳质耐火材料的基质中原位合成ZrC-ZrB2-SiC复合非氧化物,制备得到相应的铝碳质复合耐火材料.ZrC-ZrB2-SiC复合非氧化物在氧化条件下可生成玻璃相,形成致密保护层能够阻止其进一步氧化,从而显著提高铝碳质材料的抗氧化性能.

关键词: Al2O3-C耐火材料;原位反应;抗氧化性能

Abstract: ZrC-ZrB2-SiC were fabricated by in-situ reaction synthesis using zircon,B4C and coke as raw materials in Al2O3-C refractories.Effect of zircon,B4C and coke additions and temperature on resultant phases was analyzed by XRD.The influence of ZrC-ZrB2-SiC on oxidation resistance of Al2O3-C refractories was studied by XRD and SEM.The mechanism of oxidation resistance was further analyzed.The results show that ZrC-ZrB2-SiC were synthesized in Al2O3-C refractory matrix with the zircon-B4C-coke composite powder addition of 20;, temperature of 1550 ℃, holding time of 3 h.The oxidation resistance of Al2O3-C refractory can be improved significantly.ZrC-ZrB2-SiC formed a dense protective layer and preventing further oxidation of the material.

Key words: ZrC-ZrB2-SiC were fabricated by in-situ reaction synthesis using zircon,B4C and coke as raw materials in Al2O3-C refractories.Effect of zircon,B4C and coke additions and temperature on resultant phases was analyzed by XRD.The influence of ZrC-ZrB2-SiC on oxidation resistance of Al2O3-C refractories was studied by XRD and SEM.The mechanism of oxidation resistance was further analyzed.The results show that ZrC-ZrB2-SiC were synthesized in Al2O3-C refractory matrix with the zircon-B4C-coke composite powder addition of 20;, temperature of 1550 ℃, holding time of 3 h.The oxidation resistance of Al2O3-C refractory can be improved significantly.ZrC-ZrB2-SiC formed a dense protective layer and preventing further oxidation of the material.

中图分类号:

TU54

刘贺;朱凌;李小超;闵鑫;吴小文;刘艳改;房明浩;黄朝晖. 添加锆英石、B4C和焦粉对铝碳质耐火材料抗氧化性能影响[J]. 人工晶体学报, 2017, 46(5): 880-884.

LIU He;ZHU Ling;LI Xiao-chao;MIN Xin;WU Xiao-wen;LIU Yan-gai;FANG Ming-hao;HUANG Zhao-hui. Effect of Zircon, B4C and Coke Additions on Oxidation Resistance Properties of Al2O3-C Refractories[J]. JOURNAL OF SYNTHETIC CRYSTALS, 2017, 46(5): 880-884.