Ultra-high-temperature tantalum-hafnium carbonitride ceramics fabricated by combustion synthesis and spark plasma sintering

被引：20

作者：

Buinevich, V. S. ^{[1
]}

Nepapushev, A. A. ^{[1
]}

Moskovskikh, D. O. ^{[1
]}

Kuskov, K., V ^{[1
]}

Yudin, S. N. ^{[2
,3
]}

Mukasyan, A. S. ^{[4
]}

机构：

[1] Natl Univ Sci & Technol MISiS, Ctr Funct Nanoceram, Moscow 119049, Russia

[2] LLC Metsintez, Tula 300041, Russia

[3] Tula State Univ, Tula 300012, Russia

[4] Univ Notre Dame, Dept Chem & Biomol Engn, Notre Dame, IN 46556 USA

来源：

CERAMICS INTERNATIONAL | 2021年 / 47卷 / 21期

基金：

俄罗斯科学基金会;

关键词：

Ultra-high-temperature ceramics; High-energy ball milling; Combustion synthesis; Spark plasma sintering; MECHANICAL-PROPERTIES; PHYSICAL-PROPERTIES; CARBIDE; TAC; BEHAVIOR; HFC; SHS; CONSOLIDATION; COMPOSITES; PHASE;

D O I：

10.1016/j.ceramint.2021.07.180

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We report the fabrication of dense single-phase (Ta,Hf)CN carbonitride ceramics using a combination of combustion synthesis (CS) and spark plasma sintering (SPS). The ceramic powder was produced by high-energy ball milling of the reactants (Ta, Hf, C) in different atomic ratios followed by CS of the obtained nanostructured composites in a nitrogen atmosphere. X-ray diffraction analysis of the combustion products revealed the formation of (Ta,Hf)CN with cubic B1 structures as the dominant phases for all investigated compositions. The SPS of the as-synthesized powders allowed both homogenization of the composition and consolidation of the bulk single-phase carbonitride ceramics with a relative density of 98 +/- 1 %. Ta25Hf75CN showed the highest hardness (19.4 +/- 0.2 GPa) and fracture toughness (5.4 +/- 0.4 MPa m1/2) among the investigated composites and excellent oxidation resistance in air.

引用

页码：30043 / 30050

页数：8

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