Spark plasma sintering of ZrB2 powders synthesized by citrate gel method

被引：9
作者：
Gocmez, Hasan [1 ]
Tuncer, Mustafa [1 ]
Bogomol, Iurii [2 ]
机构：
[1] Dumlupinar Univ, Dept Mat Sci & Engn, Kutahya, Turkey
[2] Natl Tech Univ Ukraine, Igor Sikorsky Kyiv Polytech Inst, Dept Hightemp Mat & Powder Met, Kiev, Ukraine
来源：
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS | 2019年 / 78卷
关键词：
Zirconium diboride; Spark plasma sintering; Hardness; Fracture toughness; HIGH-TEMPERATURE CERAMICS; MECHANICAL-PROPERTIES; ZRB2-BASED COMPOSITES; PHYSICAL-PROPERTIES; DENSIFICATION; MICROSTRUCTURE; B4C;
D O I：
10.1016/j.ijrmhm.2018.09.008
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The densification behavior of nanocrystalline zirconium diboride (ZrB2) powders with nickel (5 vol%) is reported by spark plasma sintering (SPS) technique. SPS experiments were performed at 1600 and 1900 degrees C with 65 MPa pressure and 1 min holding time. A maximum relative density around 95% was obtained after SPS processing of ZrB2 at 1900 degrees C while the density of ZrB2 sample sintered at 1600 degrees C reached 88% of the theoretical density. Hardness and fracture toughness values are 11 GPa and 4.11 MPa m(1/2) for the sample sintered at 1600 degrees C and 13.7 GPa and 2.65 MPa m(1/2) for the sample sintered at 1900 degrees C, respectively.
引用
收藏
页码：127 / 130
页数：4
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