热压法制备多孔氮化硅陶瓷

doi:10.14139/j.cnki.cn22-1228.2024.01.011

下载:

PDF (4961KB)
输出: BibTeX | EndNote (RIS)

摘要

以 CaF₂作为 a-Si₃N₄ 粉末的烧结助剂，同时充当多孔氮化硅陶瓷的造孔剂，采用热压烧结工艺在较低温度下制备多孔氮化硅陶瓷。研究烧结助剂的含量对多孔氮化硅陶瓷显气孔率、抗弯强度的影响，分析材料的组分并观察断口结构。结果表明:在温度 1 450 ℃，压力 0.55 T 的条件下，当 CaF₂添加量为6.0 wt%时，多孔陶瓷的性能较为优异，其孔隙率为 38.8%，a-Si₃N₄→β-Si₃N₄的相变程度为38．5%，抗弯强度为 137.1 MPa。

	服务
	把本文推荐给朋友
	加入引用管理器
	E-mail Alert
	RSS
	（）
	作者相关文章
	解玉鹏
	焦德冰

关键词: 多孔陶瓷热压烧结抗弯强度低温制备

Abstract:

Porous silicon nitride ceramics were prepared by hot pressing process at low temperature using CaF2 as a sintering agent fora-Si₃N₄powder．The effects of the content of sintering additives on the apparent porosity and bending strength of porous silicon nitride ceramics were studied，the composition of the materials and the fracture structure were analyzed． The results show that under the conditions of temperature 1450 ℃ and pressure 0.55T，when the addition of CaF2 is 6.0 wt%，the performance of porous Si 3 N 4 ceramics is excellent，the porosity of porous Si3N4 ceramics is 38．8%，the phase transition degree of a-Si₃N₄→β-Si₃N₄ is 38．5%，and the bending strength is 137.1 MPa．

Key words: porous ceramics hot pressing sitering bending strength hypothermy preparation

出版日期: 2024-02-25 发布日期: 2024-02-25 整期出版日期: 2024-02-25

ZTFLH:

TM 285

引用本文:

解玉鹏, 焦德冰. 热压法制备多孔氮化硅陶瓷 [J]. 大学物理实验, 2024, 37(1): 49-51.
XIE Yupeng, JIAO Debing. Porous Silicon Nitride Ceramics Prepared by Hot Pressing . Physical Experiment of College, 2024, 37(1): 49-51.

链接本文:

http://dawushiyan.jlict.edu.cn/CN/10.14139/j.cnki.cn22-1228.2024.01.011 或 http://dawushiyan.jlict.edu.cn/CN/Y2024/V37/I1/49

[1]	. [J]. Physical Experiment of College, 2020, 33(1): 0 .
[2]	. [J]. Physical Experiment of College, 2020, 33(1): 0 .
[3]	WU Ming, ZENG Hong, ZHANG Wenpeng, ZHANG Yuanwei, DAI Zhenbing. Theoretical and Experimental Research of A zimuthal-Radial Pendulum [J]. Physical Experiment of College, 2020, 33(1): 1 -6 .
[4]	LIU Weiwei, SUN Qing, LIU Chenglin. Research on Selection of Critical Magnetization Current for Measuring Charge-Mass Ratio of Electron by Magnetron Controlling [J]. Physical Experiment of College, 2020, 33(1): 7 -9 .
[5]	DENG Li, LIU Yang, ZHANG Hangzhong, ZHOU Kewei, ZHAO guoru, WEI luanyi. MATLAB simulation of Fourier transform of Gaussian beam and the spatial filtering effects basing on 4F optical imaging system [J]. Physical Experiment of College, 2020, 33(1): 10 -16 .
[6]	MA Kun. Experiment Study on the Measuring Young' s Modulus by Stretching [J]. Physical Experiment of College, 2020, 33(1): 17 -20 .
[7]	FEI Xianxiang, CHEN Chunlei, WANG Wenhua, SHI Wenqing, HUANG Cunyou. Design of Lens Group Focal Length Measurement System Based on Object-Image Parallax Comparison [J]. Physical Experiment of College, 2020, 33(1): 21 -24 .
[8]	LI Chunjiang, LI Luyu, YANG Jinglei, LI Tingrong, XIANG Wenli. A New Method for Simple and Rapid Measurement of Refractive Index [J]. Physical Experiment of College, 2020, 33(1): 25 -28 .
[9]	WANG Cuiping, YAO Mengyu, YE Liu, LI Aixia, ZHANG Ziyun, DAI Peng. Progress and Applications of Electron Spin Resonance in Biology [J]. Physical Experiment of College, 2020, 33(1): 29 -33 .
[10]	CHEN Yingmo, SHEN Siyi, WANG Jie. Study on the Characteristics of Silicon Photocells [J]. Physical Experiment of College, 2020, 33(1): 34 -36 .