Nano-sized zirconium carbide powder: Synthesis and densification using a spark plasma sintering apparatus

被引：26
|
作者：
Feng, Lun [1 ]
Lee, Seahoon [1 ]
Lee, Heesoo [2 ]
机构：
[1] Korea Inst Mat Sci, Div Powder, Div Ceram Res, Chang Won 641831, South Korea
[2] Pusan Natl Univ, Sch Mat Sci & Engn, Busan 609735, South Korea
来源：
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS | 2017年 / 64卷
关键词：
Zirconium carbide; Nanoparticles; Synthesis; Spark plasma sintering; Densification; HAFNIUM;
D O I：
10.1016/j.ijrmhm.2017.01.006
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Nano-sized zirconium carbide powder was synthesized at 1600 degrees C by the carbothermal reduction of ZrO2 using a modified spark plasma sintering (SPS) apparatus. The synthesized ZrC powder had a fine particle size of approximately 189 nm and a low oxygen content of 0.88 wt%. The metal basis purity of the synthesized powder was 99.87%. The low synthesis temperature, fast heating/cooling rate and the effect of current during the modified SPS process effectively suppressed the particle growth. Using the synthesized powder, monolithic ZrC ceramics with high relative density (97.14%) were obtained after the densification at 2100 degrees C for 30 min at a pressure of 80 MPa by SPS. The average grain size of the densified ZrC ceramics was approximately 9.12 mu m. (C) 2017 Elsevier Ltd. All rights reserved.
引用
收藏
页码：98 / 105
页数：8
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