Sintering mechanics of ceramics: a short review

被引：10

作者：

Wakai, Fumihiro ^{[1
]}

Okuma, Gaku ^{[1
]}

Nishiyama, Norimasa ^{[1
]}

机构：

[1] Tokyo Inst Technol, Inst Innovat Res, Lab Mat & Struct, Midori Ku, R3-23,4259 Nagatsuta, Yokohama, Kanagawa 2268503, Japan

来源：

MATERIALS TODAY-PROCEEDINGS | 2019年 / 16卷

关键词：

Micromechanical modeling; simulation; sintering; EQUILIBRIUM PORE SURFACES; COUPLED GRAIN-BOUNDARY; CONSTITUTIVE-EQUATIONS; STRESS; SHRINKAGE; MODEL; DENSIFICATION; INTERMEDIATE; SIMULATION; VISCOSITY;

D O I：

10.1016/j.matpr.2019.05.304

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The strength and reliability of ceramics is determined by the microstructure and small defects, such as voids and cracks, which are often formed during sintering. The continuum mechanics of sintering is a powerful method to analyze the internal stress developing during the constrained sintering and the formation of these defects. However, challenges remain in understanding microscopic physical mechanisms involved in sintering of powder compacts, the microstructure of which are heterogeneous and anisotropic, generally. Here, we report how the macroscopic sintering stress tensor and the viscosity tensor are determined by microscopic forces acting between particles. The reported theoretical approach will benefit the fundamental understanding of the underlying physics and provide insight on the relationship between the macroscopic shrinkage and the microscopic particle packing structures produced by powder processing. (C) 2019 Elsevier Ltd. All rights reserved.

引用

页码：4 / 13

页数：10

共 26 条

[1] Current understanding and future research directions at the onset of the next century of sintering science and technology [J].