ZrO2粒径对盐助燃烧合成纳米ZrC微观结构的影响

硅酸盐通报 ›› 2023, Vol. 42 ›› Issue (12): 4532-4541.

ZrO₂粒径对盐助燃烧合成纳米ZrC微观结构的影响

占发琦¹, 许世鹏^1,2, 张华¹, 刘枭¹, 朱敏¹, 郑月红¹, 喇培清¹

1.兰州理工大学,省部共建有色金属先进加工与再利用国家重点实验室,兰州 730050;
2.酒泉职业技术学院,甘肃省太阳能发电系统工程重点实验室,酒泉 735000

收稿日期:2023-07-12 修订日期:2023-09-05 出版日期:2023-12-15 发布日期:2023-12-12
通信作者: 喇培清,博士,教授。E-mail:pqla@lut.edu.cn
作者简介:占发琦(1990—),男,博士,副研究员。主要从事功能材料的研究。E-mail:zhanfaqi@lut.edu.cn
基金资助:
甘肃省高校产业支撑计划(2023CYZC-29);甘肃省太阳能发电系统工程重点实验室开放课题(2022SPKL04)

Effect of ZrO₂ Particle Size on Microstructure of Nano ZrC Synthesized by Salt Assisted Combustion

ZHAN Faqi¹, XU Shipeng^1,2, ZHANG Hua¹, LIU Xiao¹, ZHU Min¹, ZHENG Yuehong¹, LA Peiqing¹

1. State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou 730050, China;
2. Key Laboratory of Solar Power System Engineering, Gansu Province, Jiuquan Vocational and Technical College, Jiuquan 735000, China

Received:2023-07-12 Revised:2023-09-05 Online:2023-12-15 Published:2023-12-12

摘要/Abstract

摘要： 采用盐助燃烧合成工艺制备了纳米碳化锆(ZrC)粉体,研究了原料氧化锆(ZrO₂)粒径对纳米ZrC粉体微观结构的影响规律和作用机制。结果表明,在ZrO₂-Mg-C体系中,随着ZrO₂原始粒径减小(200→10 nm),碳锆体系反应活性增强,ZrC中的游离碳含量逐渐减少,ZrC粉体的平均粒径随ZrO₂粒径的减小而减小,当加入粒径为10 nm的ZrO₂时,ZrC粉体的平均粒径为48 nm,且类球形形貌更加均匀。原料ZrO₂粒径减小,比表面积增大,提高了反应活性和渗碳速度,从而减小了反应时间、反应温度对晶粒生长的影响,获得了分布均匀的高纯纳米ZrC粉体。

关键词: 纳米ZrC, ZrO₂粒径, 燃烧合成, 盐助, 反应活性

Abstract: Nano ZrC powder was prepared by salt assisted combustion synthesis process. The effect of raw material ZrO₂ particle size on the microstructure of nano ZrC powder and its mechanism were studied. The results show that in ZrO₂-Mg-C system, with the decrease of ZrO₂ original particle size (200→10 nm), the reaction activity of carbon zirconium system increases and the free carbon content in ZrC decreases gradually. The average particle size of ZrC powder decreases with the decrease of ZrO₂ particle size. When ZrO₂ with particle size of 10 nm is added, the average particle size of ZrC powder is 48 nm, and the spherical like morphology tends to be more uniform. The particle size of raw material ZrO₂ decreases and the specific surface area increases, which improve the reaction activity and carburizing speed, so as to reduce the influences of reaction time and reaction temperature on crystal growth, and obtain high-purity nano ZrC powder with uniform distribution.

Key words: nano ZrC, ZrO₂ particle size, combustion synthesis, salt assisting, reaction activity

中图分类号:

TQ134

占发琦, 许世鹏, 张华, 刘枭, 朱敏, 郑月红, 喇培清. ZrO₂粒径对盐助燃烧合成纳米ZrC微观结构的影响[J]. 硅酸盐通报, 2023, 42(12): 4532-4541.

ZHAN Faqi, XU Shipeng, ZHANG Hua, LIU Xiao, ZHU Min, ZHENG Yuehong, LA Peiqing. Effect of ZrO₂ Particle Size on Microstructure of Nano ZrC Synthesized by Salt Assisted Combustion[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2023, 42(12): 4532-4541.

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ZrO₂粒径对盐助燃烧合成纳米ZrC微观结构的影响

Effect of ZrO₂ Particle Size on Microstructure of Nano ZrC Synthesized by Salt Assisted Combustion

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