Microstructure and properties of ZrB2-SiC and HfB2-SiC composites fabricated by spark plasma sintering (SPS) using TaSi2 as sintering aid

Chunfeng Hu, Yoshio Sakka, Byungkoog Jang, Hidehiko Tanaka, Toshiyuki Nishimura, Shuqi Guo, Salvatore Grasso

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

Dense ZrB2SiC and HfB2SiC composites were fabricated at 1800° by spark plasma sintering (SPS) using TaSi2 as sintering aid. The volume content of SiC was 530% and that of TaSi2 was 5% in the initial compositions. The additive of TaSi2 contributed to the densification of composites by the decomposition and simultaneous solid solution of Ta atoms into boride grains which was probably associated with the decrease of activation energy of boride grain boundaries. With increasingSiC content, the electrical conductivity of ZrB2SiC and HfB2SiC composites decreased from 19.89 to 11.99 and 22.29 to 13.42 × 105ω -1.m-1 respectively. Generally, the thermal conductivity of composites showed an increasing tendency with increasing SiC content, indicating the maximum values of 49.93 and 118.39W/m.K respectively for ZrB 2SiC nd HfB2SiC composites produced with 30 vol% SiC content in the initial compositions. Additionally, the Vickers hardness of composites increased with the increment of SiC content from 16.9 to 20.2 and 24.0 to 28.5 GPa for ZrB2SiC and HfB2SiC composites respectively. The fracture toughness of ZrB2SiC composites showed an increasing tendency from 3.70 to 4.44 MPa.m1/2 with increasing SiC content while those of HfB2SiC composites did not show a changing tendency and was in a range of 3.283.54 MPa.m1/2. The elastic moduli of composites declined from 464.8 to 453.2 and 494.4 to 481.9 GPa for ZrB 2SiC and HfB2SiC composites respectively with increasing SiC content.

Original languageEnglish
Pages (from-to)997-1001
Number of pages5
JournalJournal of the Ceramic Society of Japan
Volume118
Issue number1383
DOIs
Publication statusPublished - Jan 1 2010
Externally publishedYes

Fingerprint

Spark plasma sintering
sparks
sintering
Sintering
microstructure
Microstructure
composite materials
Composite materials
Boron Compounds
tendencies
borides
Borides
Vickers hardness
densification
fracture strength
Chemical analysis
Densification
Fracture toughness
Solid solutions
Thermal conductivity

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

Cite this

Microstructure and properties of ZrB2-SiC and HfB2-SiC composites fabricated by spark plasma sintering (SPS) using TaSi2 as sintering aid. / Hu, Chunfeng; Sakka, Yoshio; Jang, Byungkoog; Tanaka, Hidehiko; Nishimura, Toshiyuki; Guo, Shuqi; Grasso, Salvatore.

In: Journal of the Ceramic Society of Japan, Vol. 118, No. 1383, 01.01.2010, p. 997-1001.

Research output: Contribution to journalArticle

Hu, Chunfeng ; Sakka, Yoshio ; Jang, Byungkoog ; Tanaka, Hidehiko ; Nishimura, Toshiyuki ; Guo, Shuqi ; Grasso, Salvatore. / Microstructure and properties of ZrB2-SiC and HfB2-SiC composites fabricated by spark plasma sintering (SPS) using TaSi2 as sintering aid. In: Journal of the Ceramic Society of Japan. 2010 ; Vol. 118, No. 1383. pp. 997-1001.
@article{f1e07c3d5e0745ba8b34384b95f4e34c,
title = "Microstructure and properties of ZrB2-SiC and HfB2-SiC composites fabricated by spark plasma sintering (SPS) using TaSi2 as sintering aid",
abstract = "Dense ZrB2SiC and HfB2SiC composites were fabricated at 1800° by spark plasma sintering (SPS) using TaSi2 as sintering aid. The volume content of SiC was 530{\%} and that of TaSi2 was 5{\%} in the initial compositions. The additive of TaSi2 contributed to the densification of composites by the decomposition and simultaneous solid solution of Ta atoms into boride grains which was probably associated with the decrease of activation energy of boride grain boundaries. With increasingSiC content, the electrical conductivity of ZrB2SiC and HfB2SiC composites decreased from 19.89 to 11.99 and 22.29 to 13.42 × 105ω -1.m-1 respectively. Generally, the thermal conductivity of composites showed an increasing tendency with increasing SiC content, indicating the maximum values of 49.93 and 118.39W/m.K respectively for ZrB 2SiC nd HfB2SiC composites produced with 30 vol{\%} SiC content in the initial compositions. Additionally, the Vickers hardness of composites increased with the increment of SiC content from 16.9 to 20.2 and 24.0 to 28.5 GPa for ZrB2SiC and HfB2SiC composites respectively. The fracture toughness of ZrB2SiC composites showed an increasing tendency from 3.70 to 4.44 MPa.m1/2 with increasing SiC content while those of HfB2SiC composites did not show a changing tendency and was in a range of 3.283.54 MPa.m1/2. The elastic moduli of composites declined from 464.8 to 453.2 and 494.4 to 481.9 GPa for ZrB 2SiC and HfB2SiC composites respectively with increasing SiC content.",
author = "Chunfeng Hu and Yoshio Sakka and Byungkoog Jang and Hidehiko Tanaka and Toshiyuki Nishimura and Shuqi Guo and Salvatore Grasso",
year = "2010",
month = "1",
day = "1",
doi = "10.2109/jcersj2.118.997",
language = "English",
volume = "118",
pages = "997--1001",
journal = "Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan",
issn = "1882-0743",
publisher = "Ceramic Society of Japan/Nippon Seramikkusu Kyokai",
number = "1383",

}

TY - JOUR

T1 - Microstructure and properties of ZrB2-SiC and HfB2-SiC composites fabricated by spark plasma sintering (SPS) using TaSi2 as sintering aid

AU - Hu, Chunfeng

AU - Sakka, Yoshio

AU - Jang, Byungkoog

AU - Tanaka, Hidehiko

AU - Nishimura, Toshiyuki

AU - Guo, Shuqi

AU - Grasso, Salvatore

PY - 2010/1/1

Y1 - 2010/1/1

N2 - Dense ZrB2SiC and HfB2SiC composites were fabricated at 1800° by spark plasma sintering (SPS) using TaSi2 as sintering aid. The volume content of SiC was 530% and that of TaSi2 was 5% in the initial compositions. The additive of TaSi2 contributed to the densification of composites by the decomposition and simultaneous solid solution of Ta atoms into boride grains which was probably associated with the decrease of activation energy of boride grain boundaries. With increasingSiC content, the electrical conductivity of ZrB2SiC and HfB2SiC composites decreased from 19.89 to 11.99 and 22.29 to 13.42 × 105ω -1.m-1 respectively. Generally, the thermal conductivity of composites showed an increasing tendency with increasing SiC content, indicating the maximum values of 49.93 and 118.39W/m.K respectively for ZrB 2SiC nd HfB2SiC composites produced with 30 vol% SiC content in the initial compositions. Additionally, the Vickers hardness of composites increased with the increment of SiC content from 16.9 to 20.2 and 24.0 to 28.5 GPa for ZrB2SiC and HfB2SiC composites respectively. The fracture toughness of ZrB2SiC composites showed an increasing tendency from 3.70 to 4.44 MPa.m1/2 with increasing SiC content while those of HfB2SiC composites did not show a changing tendency and was in a range of 3.283.54 MPa.m1/2. The elastic moduli of composites declined from 464.8 to 453.2 and 494.4 to 481.9 GPa for ZrB 2SiC and HfB2SiC composites respectively with increasing SiC content.

AB - Dense ZrB2SiC and HfB2SiC composites were fabricated at 1800° by spark plasma sintering (SPS) using TaSi2 as sintering aid. The volume content of SiC was 530% and that of TaSi2 was 5% in the initial compositions. The additive of TaSi2 contributed to the densification of composites by the decomposition and simultaneous solid solution of Ta atoms into boride grains which was probably associated with the decrease of activation energy of boride grain boundaries. With increasingSiC content, the electrical conductivity of ZrB2SiC and HfB2SiC composites decreased from 19.89 to 11.99 and 22.29 to 13.42 × 105ω -1.m-1 respectively. Generally, the thermal conductivity of composites showed an increasing tendency with increasing SiC content, indicating the maximum values of 49.93 and 118.39W/m.K respectively for ZrB 2SiC nd HfB2SiC composites produced with 30 vol% SiC content in the initial compositions. Additionally, the Vickers hardness of composites increased with the increment of SiC content from 16.9 to 20.2 and 24.0 to 28.5 GPa for ZrB2SiC and HfB2SiC composites respectively. The fracture toughness of ZrB2SiC composites showed an increasing tendency from 3.70 to 4.44 MPa.m1/2 with increasing SiC content while those of HfB2SiC composites did not show a changing tendency and was in a range of 3.283.54 MPa.m1/2. The elastic moduli of composites declined from 464.8 to 453.2 and 494.4 to 481.9 GPa for ZrB 2SiC and HfB2SiC composites respectively with increasing SiC content.

UR - http://www.scopus.com/inward/record.url?scp=78149329470&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=78149329470&partnerID=8YFLogxK

U2 - 10.2109/jcersj2.118.997

DO - 10.2109/jcersj2.118.997

M3 - Article

AN - SCOPUS:78149329470

VL - 118

SP - 997

EP - 1001

JO - Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan

JF - Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan

SN - 1882-0743

IS - 1383

ER -