The improved mechanical properties of β-CaSiO3 bioceramics with Si3N4 addition

Ying Pan; Kaihui Zuo; Dongxu Yao; Jinwei Yin; Yunchuan Xin; Yongfeng Xia; Hanqin Liang; Yuping Zeng

doi:10.1016/j.jmbbm.2015.10.014

The improved mechanical properties of β-CaSiO3 bioceramics with Si3N4 addition

J Mech Behav Biomed Mater. 2015 Mar:55:120-126. doi: 10.1016/j.jmbbm.2015.10.014. Epub 2015 Oct 30.

Authors

Ying Pan¹, Kaihui Zuo², Dongxu Yao², Jinwei Yin², Yunchuan Xin¹, Yongfeng Xia², Hanqin Liang², Yuping Zeng³

Affiliations

¹ State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China; Graduate School of Chinese Academy of Sciences, Beijing 100049, China.
² State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China.
³ State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China. Electronic address: yuping-zeng@mail.sic.ac.cn.

PMID: 26580024
DOI: 10.1016/j.jmbbm.2015.10.014

Abstract

The motivation of this study is to investigate the effect of Si3N4 addition on the sinterability of β-CaSiO3 ceramics. β-CaSiO3 ceramics with different content of Si3N4 were prepared at the sintering temperature ranging from 1000°C to 1150°C. The results showed that Si3N4 can be successfully used as sintering additive by being oxidized to form SiO2. The β-CaSiO3 ceramics with 3wt% Si3N4 sintered at 1100°C revealed flexural strength, hardness and fracture toughness of 157.2MPa, 4.4GPa and 2.3MPam(1/2) respectively, which was much higher than that of pure β-CaSiO3 ceramics (41.1MPa, 1.0GPa, 1.1MPam(1/2)). XRD analysis and SEM observation indicated that the main phase maintained to be β-phase after sintering.

Keywords: Mechanical properties; Oxidation; Si(3)N(4); β-CaSiO(3).

MeSH terms

Calcium Compounds / chemistry*
Ceramics / chemistry*
Mechanical Phenomena*
Silicates / chemistry*
Silicon Compounds / chemistry*
Structure-Activity Relationship
Temperature

Substances

Calcium Compounds
Silicates
Silicon Compounds
silicon nitride
calcium silicate