Enhanced mechanical properties of a nanostructured Mg2Al4Si5O18-MgAl2O4 composite

被引：5

作者：

Shon, In-Jin ^{[1
,2
]}

Kang, Hyun-Su ^{[1
,2
]}

Doh, Jung-Mann ^{[3
]}

Yoon, Jin-Kook ^{[3
]}

机构：

[1] Chonbuk Natl Univ, Engn Coll, Div Adv Mat Engn, Jeonju 561756, South Korea

[2] Chonbuk Natl Univ, Engn Coll, Res Ctr Adv Mat Dev, Jeonju 561756, South Korea

[3] Korea Inst Sci & Technol, Interface Control Res Ctr, Seoul 130650, South Korea

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2014年 / 606卷

关键词：

Compound; Nanomaterials; Mechanical properties; Microstructure; CONSOLIDATION; TEMPERATURE; FABRICATION; BEHAVIOR; TI;

D O I：

10.1016/j.msea.2014.03.095

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Single-step synthesis and consolidation of nanostructured Mg2Al4Si5O18-MgAl2O4 composite were achieved via pulsed-current-activated heating using a mixture of 3MgO, 3Al(2)O(3) and 5SiO(2) powders. Before sintering, the powder mixture was high-energy ball milled for 10 h. From the milled powder mixture, a highly dense nanostructured Mg2Al4Si5O18-MgAl2O4 composite could be obtained within one minute by simultaneously applying 80 MPa of pressure and a pulsed current. The advantage of this process is that it allows simultaneous synthesis and densification to near theoretical density while sustaining the nanosized microstructure of raw powders. The mechanical properties (hardness and fracture toughness) of Mg2Al4Si5O18 were improved by the addition of MgAl2O4. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：139 / 143

页数：5

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