Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1575078 | Materials Science and Engineering: A | 2014 | 5 Pages |
Abstract
Single-step synthesis and consolidation of nanostructured Mg2Al4Si5O18-MgAl2O4 composite were achieved via pulsed-current-activated heating using a mixture of 3MgO, 3Al2O3 and 5SiO2 powders. Before sintering, the powder mixture was high-energy ball milled for 10Â h. From the milled powder mixture, a highly dense nanostructured Mg2Al4Si5O18-MgAl2O4 composite could be obtained within one minute by simultaneously applying 80Â 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.
Related Topics
Physical Sciences and Engineering
Materials Science
Materials Science (General)
Authors
In-Jin Shon, Hyun-Su Kang, Jung-Mann Doh, Jin-Kook Yoon,