煅烧条件对溶胶-凝胶法合成超细ZrB<sub>2</sub>粉体的影响

孟佳伟; 吕艳红; 崔唐茵; 白丽; 徐海森; 方惠一; 王鹏

煅烧条件对溶胶-凝胶法合成超细ZrB₂粉体的影响

孟佳伟¹,
吕艳红²,
崔唐茵^1,3,
白丽¹,
徐海森⁴,
方惠一¹,
王鹏^1,3,5, ,

1. 山东理工大学材料科学与工程学院, 山东淄博 255000;
2. 中国建材检验认证集团淄博有限公司, 山东淄博 255000;
3. 山东工业陶瓷研究设计院, 山东淄博 255000;
4. 山东硅元新型材料股份有限公司, 山东淄博 255000;
5. 国防科技大学新型陶瓷纤维及其复合材料重点实验室, 湖南长沙 410073

基金项目:

国防科工局国防科技重点实验室稳定支持科研项目(WDZC20215250504)

国家自然科学基金项目(51802176,52272067)

山东省自然科学基金(ZR2023ME035,ZR2020ME027)

详细信息

作者简介:
孟佳伟,男,1997年生,主要从事ZrB₂陶瓷制备及增韧研究。E-mail:442450668@qq.com

通讯作者:
王鹏,男,1987年生,主要从事超高温陶瓷、纳米材料的合成研究。E-mail:wangpeng1@126.com

中图分类号: TB383
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出版历程
- 收稿日期: 2023-08-11
- 网络出版日期: 2024-07-23

Effect of Calcination Conditions on Synthesis of Ultrafine ZrB₂ Powder by Sol-Gel Method

MENG Jiawei¹,
LÜ Yanhong²,
CUI Tangyin^1,3,
BAI Li¹,
XU Haisen⁴,
FANG Huiyi¹,
WANG Peng^{1,3,5
, ,}

1. School of Material Science and Engineering, Shandong University of Technology, Zibo 255000, China;
2. China Building Materials Testing & Certification Group Zibo Co., Ltd., Zibo 255000, China;
3. Shandong Industrial Ceramics Research & Design Institute, Zibo 255000, China;
4. Shandong Guiyuan Advanced Ceramics Co., Ltd., Zibo 255000, China;
5. Science and Technology on Advanced Ceramics Fibers and Composites Laboratory, National University of Defense Technology, Changsha 410073, China

摘要

摘要: ZrB₂基陶瓷材料在超高温领域具有广阔的应用前景,为研究煅烧条件对ZrB₂粉体的影响,本研究分别以正丙醇锆、蔗糖和硼酸为Zr源、C源和B源,采用溶胶-凝胶法制备ZrB₂粉体,研究了煅烧温度、保温时间及氩气流量对ZrB₂粉体合成的影响。结果表明,随着煅烧温度的升高,生成物中的杂质相含量逐渐降低,ZrB₂相含量逐渐增加。B∶Zr∶C摩尔比为2.85∶1∶7的前驱体粉体在氩气气氛、1 550 ℃下分别保温30、60和120 min后均得到了纯ZrB₂粉体。由Scherrer公式计算得到的ZrB₂平均晶粒尺寸远小于SEM观测的粒径,表明制得的ZrB₂粉体由小晶粒组成。煅烧过程中通入的氩气流量会影响B₂O₃的挥发程度,进而影响产物的物相组成。
- ZrB₂ /
- 溶胶-凝胶法 /
- 煅烧温度 /
- 显微形貌 /
- B₂O₃挥发
Abstract: ZrB₂-based ceramics have broad application prospects in the field of ultra-high temperature. ZrB₂ powders are prepared by sol-gel method with zirconium propanol, sucrose and boric acid as Zr, C and B sources, respectively, and the effects of calcination temperature, holding time and argon flow rate on the synthesis of ZrB₂ powder are studied. The results show that with the increase of calcination temperature, the content of impurity phase in the product decreases gradually, and that the content of ZrB₂ phase increases gradually. Pure ZrB₂ powders are obtained by holding the precursor powders with a molar ratio of 2.85∶1∶7 of B∶Zr∶C in argon atmosphere at 1 550 ℃ for 30, 60 and 120 minutes. The average grain size of ZrB₂ powders calculated by Scherrer formula is much smaller than that observed by SEM, indicating that the ZrB₂ powders are composed of small grains. The argon flow rate during calcination process will affect the volatilization degree of B₂O₃, and then affect the phase composition of the product.
- ZrB₂ /
- sol-gel method /
- calcination temperature /
- microstructure /
- volatilization of B₂O₃

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参考文献(10)

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