挤出成型制备高强度氮化硅陶瓷

硅酸盐通报 ›› 2023, Vol. 42 ›› Issue (5): 1852-1857.

所属专题：陶瓷

挤出成型制备高强度氮化硅陶瓷

王伟伟¹, 韩卓群², 马旭朝¹, 王营营¹, 王晓东¹, 宋涛¹, 李伶¹

1.山东工业陶瓷研究设计院有限公司,淄博 255000;
2.济南大学材料科学与工程学院,济南 250022

收稿日期:2022-12-28 修订日期:2023-03-06 出版日期:2023-05-15 发布日期:2023-06-01
通信作者: 李伶,博士,教授级高级工程师。E-mail:sinomaliling@126.com
作者简介:王伟伟(1994—),女,硕士研究生。主要从事氮化硅陶瓷的研究。E-mail:1277522818@qq.com
基金资助:
山东省重点研发计划(2022CXPT003)

Preparation of High Strength Silicon Nitride Ceramics by Extrusion

WANG Weiwei¹, HAN Zhuoqun², MA Xuzhao¹, WANG Yingying¹, WANG Xiaodong¹, SONG Tao¹, LI Ling¹

1. Shandong Industrial Ceramics Research & Degisn Institute Co., Ltd., Zibo 255000, China;
2. School of Materials Science and Engineering, University of Jinan, Jinan 250022, China

Received:2022-12-28 Revised:2023-03-06 Online:2023-05-15 Published:2023-06-01

摘要/Abstract

摘要： 以羧甲基纤维素(CMC)为黏结剂,通过挤出成型的方式制备氮化硅陶瓷管材,并研究了黏结剂含量对陶瓷管材生坯性能的影响,烧结温度对氮化硅陶瓷相对密度、弯曲强度和微观形貌的影响,以及氮化硅陶瓷的高温强度性能。结果表明:黏结剂含量为7%(质量分数)时,可制得干燥收缩均匀、表面光滑、无微裂纹的陶瓷管材生坯;烧结温度在1 740 ℃时,氮化硅陶瓷的相对密度和弯曲强度达到最大值,分别为96%和(684±23) MPa,其1 200 ℃时的弯曲强度达(380±21) MPa,具有良好的高温强度性能。

关键词: 陶瓷, 氮化硅, 挤出成型, 弯曲强度, 显微结构, 烧结温度

Abstract: Silicon nitride ceramic pipes were prepared by extrusion with carboxymethyl cellulose (CMC) as the binder. The effect of binder content on the performance of green ceramic pipes was studied. The effect of sintering temperature on the relative density, flexural strength and microstructure of silicon nitride ceramics was studied. At the same time, the high temperature strength performance of silicon nitride ceramics was studied. The results show that with the binder content of 7% (mass fraction), the green ceramic pipe can dry and shrink evenly, and the surface is smooth without micro-cracks. At the sintering temperature of 1 740 ℃, the bulk density and flexural strength of silicon nitride ceramics reach the maximum value, which are 96% and (684±23) MPa, respectively. And the flexural strength reaches (380±21) MPa at 1 200 ℃, silicon nitride ceramics show a good high temperature strength performance.

Key words: ceramics, silicon nitride, extrusion, flexural strength, microstructure, sintering temperature

中图分类号:

TQ174.6

王伟伟, 韩卓群, 马旭朝, 王营营, 王晓东, 宋涛, 李伶. 挤出成型制备高强度氮化硅陶瓷[J]. 硅酸盐通报, 2023, 42(5): 1852-1857.

WANG Weiwei, HAN Zhuoqun, MA Xuzhao, WANG Yingying, WANG Xiaodong, SONG Tao, LI Ling. Preparation of High Strength Silicon Nitride Ceramics by Extrusion[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2023, 42(5): 1852-1857.

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挤出成型制备高强度氮化硅陶瓷

Preparation of High Strength Silicon Nitride Ceramics by Extrusion

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