Effects of sintering additives and sintering methods on the mechanical, antimicrobial and optical properties of Si 3 N 4 bioceramics

被引：5

作者：

Du, Songmo ^{[1
]}

Li, Fei ^{[1
]}

Zhang, Jie ^{[2
]}

Chen, Zhanglin ^{[1
]}

Zhang, Shijia ^{[1
]}

Zhao, Shuo ^{[1
]}

Zhao, Dengke ^{[1
]}

Fan, Binbin ^{[1
]}

Chen, Kexin ^{[1
]}

Liu, Guanghua ^{[1
]}

机构：

[1] Tsinghua Univ, Sch Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China

[2] Adv Ceram & Struct Ctr, Yongjiang Lab, Ningbo, Zhejiang, Peoples R China

来源：

JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS | 2024年 / 154卷

基金：

中国国家自然科学基金; 中国博士后科学基金;

关键词：

Silicon nitride; Bioceramic; Mechanical property; Antimicrobial; Optical property; SILICON-NITRIDE CERAMICS; THERMAL-CONDUCTIVITY; SI3N4; BETA-SI3N4; COLOR; RE; MICROSTRUCTURE; TRANSFORMATION; EVOLUTION; CRYSTALS;

D O I：

10.1016/j.jmbbm.2024.106529

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

Si 3 N 4 bioceramics were fabricated using GPS and SPS method with MgO-RE 2 O 3 (RE = La, Nd, Gd, Ho and Lu) sintering additives. The effect of sintering methods and sintering additives on the grain growth, mechanical, antimicrobial properties and color of Si 3 N 4 bioceramics were studied. Samples sintered with GPS are composed of 13-Si 3 N 4 and samples sintered with SPS are composed of alpha-Si 3 N 4 and 13-Si 3 N 4 . The growth of 13-Si 3 N 4 grains in samples sintered with GPS are more adequate. Samples sintered with GPS exhibit a S. aureus inactivation rate up to 98% and a bright color appearance with a hardness of about 13 GPa and a fracture toughness up to 7.5 MPa m 1/2 , suitable for dental implants. And samples sintered with SPS exhibit a hardness of about 17 GPa and a fracture toughness about 6 MPa m 1/2 .

引用

页数：7

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