Comparisons of grain size-density trajectory during microwave and conventional sintering of titanium nitride

被引：33

作者：

Demirskyi, D. ^{[1
,2
,3
]}

Agrawal, D. ^{[2
]}

Ragulya, A. ^{[3
]}

机构：

[1] Natl Inst Mat Sci, Tsukuba, Ibaraki 3050047, Japan

[2] Penn State Univ, Mat Res Inst, University Pk, PA 16802 USA

[3] Frantsevich Inst Problems Mat Sci, UA-03680 Kiev 142, Ukraine

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2013年 / 581卷

关键词：

Ceramics; Microwave heating; Sintering; Grain growth; NANOCRYSTALLINE ZIRCONIA; POWDERS; CONSOLIDATION; DENSIFICATION; COMPOSITES; CERAMICS; KINETICS; GROWTH; COPPER; FIELD;

D O I：

10.1016/j.jallcom.2013.07.159

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：

A broad range of sintering temperatures and hold times had been systematically varied to investigate the "relative density/grain size" trajectories for titanium nitride specimens during microwave and conventional sintering. Fully dense materials with a submicron grain size (around 170 nm using microwave sintering and around 240 nm using conventional sintering) are achievable using the simple "ramp & hold" approach. Improvement of the mechanical properties, including increase in hardness (from 18 to 20 GPa), fracture toughness (from 2.9 to 3.4 MPa m(1/2)), was observed due to grain refinement in case of microwave sintering. The area for the future optimization for the sintering schedule for further grain refinement has been proposed. (C) 2013 Elsevier B. V. All rights reserved.

引用

页码：498 / 501

页数：4

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