The influence of sintering additives on densification and phase composition of ZrB2-HfB2 composite

被引：1

作者：

Gubernat, Agnieszka ^{[1
]}

Zych, Lukasz ^{[1
]}

Kornaus, Kamil ^{[1
]}

Zientara, Dariusz ^{[1
]}

Komarek, Sebastian ^{[1
]}

Stan-Glowinska, Katarzyna ^{[2
]}

Klimczyk, Piotr ^{[3
]}

Podsiadlo, Marcin ^{[3
]}

Dusza, Jan ^{[4
]}

Lis, Jerzy ^{[1
]}

Pedzich, Zbigniew ^{[1
]}

机构：

[1] AGH Univ Krakow, Fac Mat Sci & Ceram, Al Adama Mickiewicza 30, PL-30059 Krakow, Poland

[2] Polish Acad Sci, Inst Met & Mat Sci, 25 Reymonta St, PL-30059 Krakow, Poland

[3] Krakow Inst Technol, Lukasiewicz Res Network, 73 Zakopianska St, PL-30418 Krakow, Poland

[4] Slovak Acad Sci, Inst Mat Res, 47 Watsonova St, Kosice 04001, Slovakia

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2024年 / 44卷 / 14期

关键词：

Borides; Hot-pressing; Spark plasma sintering; High-pressure/high temperature sintering; Sintering; Microstructure; HIGH-TEMPERATURE CERAMICS; MECHANICAL-PROPERTIES; ZIRCONIUM DIBORIDE; PARTICLE-SIZE; BORON-CARBIDE; ZRB2-SIC COMPOSITES; PLASTIC-DEFORMATION; MOSI2; ADDITION; BEHAVIOR; MICROSTRUCTURE;

D O I：

10.1016/j.jeurceramsoc.2024.116685

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：

This work deals with the preparation of composites from the ZrB2-HfB2-MeX system (where: MeX = SiC, B4C, WC, MoSi2 and CrSi2). Three pressure-assisted sintering techniques were used to obtain the composites, i.e. hotpressing (HP), spark-plasma sintering (SPS) and high pressure-high temperature (HPHT) sintering. Hot-pressing was selected as the most favourable sintering technique. The composites obtained via hot-pressing were characterized by high density and homogeneous microstructure. The work did not undermine or justify the need to reduce passivating oxide layers on boride grains. In the case of silicides, especially chromium silicide, there was a significant reduction in the sintering temperature of the ZrB2-HfB2 composites by about 500-600 degrees C. In composites with the addition of silicides, there is a tendency to create complex solid solutions, which is visible as core-shell microstructures.

引用

页数：13