Ultrahigh strength printed ceramic lattices

被引：47

作者：

Mei, Hui ^{[1
]}

Zhao, Ruoshi ^{[1
]}

Xia, Yize ^{[1
]}

Du, Jie ^{[1
]}

Wang, Xin ^{[1
]}

Cheng, Laifei ^{[1
]}

机构：

[1] Northwestern Polytech Univ, Sci & Technol Thermostruct Composite Mat Lab, Xian 710072, Shaanxi, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2019年 / 797卷

关键词：

Ceramic lattices; Stereo Lithography Apparatus (SLA); Strengthening; Compressive properties; Collapse behaviors; MECHANICAL-PROPERTIES; MICROSTRUCTURE; INFILTRATION; SCAFFOLDS; FOAMS;

D O I：

10.1016/j.jallcom.2019.05.117

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Ceramic lattices with ultrahigh compressive specific strength, 39.7 Nm/g, and specific stiffness, 1.435 Nm/kg, have been fabricated by Stereo Lithography Apparatus (SLA) in this work, which are much stronger than stainless steel lattices, whose specific strength and stiffness are 2 N m/g and 0.03 Nm/kg respectively. These achievements not only make the application of ceramic lattices no longer limited in novel functional material field, like tissue engineering or filtration, but are also a substantial break-through on light-weight design of structural ceramics. In this study, the design of lattice unit cell was optimized through experiments and simulation, and then ceramic lattices were reinforced by infiltrating SiC and heat treating. Ultimately, the strength of reinforced lattices reached nearly 7 times higher than that of the primary ones. Besides, compressive properties, fracture behaviors and microscopic features of ceramic lattices were systematically and thoroughly discussed in this paper. (C) 2019 Elsevier B.V. All rights reserved.

引用

页码：786 / 796

页数：11

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