Pulsed current activated combustion synthesis and consolidation of ultrafine NbSi2 from mechanically activated powders

被引：18

作者：

Ko, In-Yong ^{[1
]}

Kim, Byung-Ryang ^{[1
]}

Nam, Kee-Seok ^{[2
]}

Moon, Byung-Moon ^{[3
]}

Lee, Byung-Soo ^{[1
]}

Shon, In-Jin ^{[1
,4
]}

机构：

[1] Chonbuk Natl Univ, Res Ctr Adv Mat Dev, Div Adv Mat Engn, Jeonju Si 561756, Jeonbuk, South Korea

[2] Korea Inst Mat Sci, Changwon Si 641831, Gyeongnam, South Korea

[3] Korea Inst Ind Technol, Liquid Proc & Casting Technol R&D Dept, Inchon, South Korea

[4] Chonbuk Natl Univ, Specialized Grad Sch, Dept Hydrogen & Fuel Cells Engn, Jeonju 561756, South Korea

来源：

METALS AND MATERIALS INTERNATIONAL | 2009年 / 15卷 / 03期

关键词：

pulsed current activated combustion; intermetallic; sintering; nanophase; mechanical properties; NbSi2; INDUCTION HEATED COMBUSTION; TUNGSTEN CARBIDE; WC; COMPOSITE;

D O I：

10.1007/s12540-009-0399-7

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Dense ultrafine NbSi2 was synthesized using the pulsed current activated combustion synthesis (PCACS) method within 2 min and in one step from mechanically activated powders of Nb and 2Si. Simultaneous combustion synthesis and densification were accomplished under the combined effects of a pulsed current and mechanical pressure. Highly dense NbSi2 with a relative density of up to 98 % was produced under simultaneous application of a 60 MPa pressure and a pulsed current. The average grain size and mechanical properties (hardness and fracture toughness) of the compound were investigated.

引用

页码：399 / 403

页数：5

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