Synthesis and Consolidation of Nanostructured Nb2C-Al2O3 Composite

被引：0

作者：

Park, Na-Ra ^{[1
,2
]}

Kim, Shin-Ho ^{[3
,4
]}

Shon, In-Jin ^{[3
,4
]}

机构：

[1] Korea Univ, Dept Mat Sci & Engn, Seoul 02841, South Korea

[2] Korea Inst Carbon Convergence Technol, Div Convergence Proc R&D, Jeonju 54853, South Korea

[3] Chonbuk Natl Univ, Engn Coll, Div Adv Mat Engn, Jeonju 561756, South Korea

[4] Chonbuk Natl Univ, Engn Coll, Res Ctr Hydrogen Fuel Cell, Jeonju 561756, South Korea

来源：

JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY | 2019年 / 19卷 / 04期

基金：

新加坡国家研究基金会;

关键词：

Rapid Sintering; Composite; Nanomaterial; Mechanical Properties; Nb2C-Al2O3; MECHANICAL-PROPERTIES; NANOCRYSTALLINE;

D O I：

10.1166/jnn.2019.15978

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Although an extremely hard ceramic material, niobium carbide has low fracture toughness to use wide applications. To fabricate nanostructured composite is common method to improve fracture toughness. Nanopowder mixture of Nb2C and Al2O3 were synthesized according to the reaction (Al4C3 + 6Nb + 3O(2) -> 3Nb(2)C+ 2Al(2)O(3)) from Al4C3 and Nb powders by high-energy ball milling. The synthesized mixture of Nb2C and Al2O3 powders was consolidated by pulsed current activated sintering method within two min under the 80 MPa pressure. Nb2C and Al2O3 in the composite were nano-sized phases. The fracture toughness of a nanostructured Nb2C-Al2O3 composite of this study is better than that of previous study.

引用

页码：2349 / 2353

页数：5

共 14 条

[1] Nanocrystalline materials: A study of WC-based hard metals [J].

Berger, S ;

Porat, R ;

Rosen, R .

PROGRESS IN MATERIALS SCIENCE, 1997, 42 (1-4) :311-320

[2] DIFFUSION MODELS FOR HOT PRESSING WITH SURFACE ENERGY AND PRESSURE EFFECTS AS DRIVING FORCES [J].

COBLE, RL .

JOURNAL OF APPLIED PHYSICS, 1970, 41 (12) :4798-&

[3] Structure and properties of nanocrystalline TiC full-density bulk alloy consolidated from mechanically reacted powders [J].

El-Eskandarany, MS .

JOURNAL OF ALLOYS AND COMPOUNDS, 2000, 305 (1-2) :225-238

[4] Mechanical Properties and Rapid Low-temperature Consolidation of Nanocrystalline Cu-ZrO2 Composites by Pulsed Current Activated Heating [J].

Kang, Bo-Ram ;

Yoon, Jin-kook ;

Hong, Kyung-Tae ;

Shon, In-Jin .

METALS AND MATERIALS INTERNATIONAL, 2015, 21 (04) :698-703

[5] Simultaneous Synthesis and Sintering of a Nanocrystalline AlCr2-Al2O3 Composite by Rapid Heating and Its Mechanical Properties [J].

Kwak, Bong-Won ;

Lee, Seok-Jae ;

Shon, In-Jin .

KOREAN JOURNAL OF METALS AND MATERIALS, 2016, 54 (06) :409-414

[6]

Kwak BW, 2015, J CERAM PROCESS RES, V16, P340

[7] Mechanical Properties and Sintering of Nanostructured Ti-TiC Composites [J].

Kwon, So-Mang ;

Park, Na-Ra ;

Shin, Jae-Won ;

Oh, Se-Hoon ;

Kim, Byung-Su ;

Shon, In-Jin .

KOREAN JOURNAL OF METALS AND MATERIALS, 2015, 53 (08) :555-562

[8] EVALUATION OF KLC OF BRITTLE SOLIDS BY THE INDENTATION METHOD WITH LOW CRACK-TO-INDENT RATIOS [J].

NIIHARA, K ;

MORENA, R ;

HASSELMAN, DPH .

JOURNAL OF MATERIALS SCIENCE LETTERS, 1982, 1 (01) :13-16

[9] Spark plasma sintering of alumina [J].

Shen, ZJ ;

Johnsson, M ;

Zhao, Z ;

Nygren, M .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2002, 85 (08) :1921-1927

[10] Synthesis and Rapid Sintering of Nanocrystalline CoTi-ZrO2 Composite [J].

Shon, In-Jin .

KOREAN JOURNAL OF METALS AND MATERIALS, 2016, 54 (11) :826-830

← 1 2 →