Influence of the microstructure evolution of ZrO2 fiber on the fracture toughness of ZrB2-SiC nanocomposite ceramics

Shubin Wang; Yue Li; Xinghong Zhang

doi:10.1016/j.matdes.2013.01.039

Influence of the microstructure evolution of ZrO₂ fiber on the fracture toughness of ZrB₂-SiC nanocomposite ceramics

Shubin Wang^*
, Yue Li
, Xinghong Zhang

^*Corresponding author for this work

School of Materials Science and Engineering

Beihang University
Harbin Institute of Technology

Research output: Contribution to journal › Article › peer-review

31 Scopus citations

Abstract

ZrB₂-SiC nanocomposite ceramics toughened by ZrO₂ fiber were fabricated by spark plasma sintering (SPS) at 1700°C. The content of ZrO₂ fiber incorporated into the ZrB₂-SiC nanocomposites ranged from 5mass% to 20mass%. The content, microstructure, and phase transformation of ZrO₂ fiber exhibited remarkable effects on the fracture toughness of the ZrO_2(f)/ZrB₂-SiC composites. Fracture toughness of the composites greatly improved to a maximum value of 6.56MPam^1/2±0.3MPam^1/2 by the addition of 15mass% of ZrO₂ fiber. The microstructure of the ZrO₂ fiber exhibited certain alterations after the SPS process, which enhanced crack deflection and crack bridging and affected fracture toughness. Some microcracks were induced by the phase transformation from t-ZrO₂ to m-ZrO₂, which was also an important reason behind the improvement in toughness.

Original language	English
Pages (from-to)	808-813
Number of pages	6
Journal	Materials and Design
Volume	49
DOIs	https://doi.org/10.1016/j.matdes.2013.01.039
State	Published - Aug 2013

Access to Document

10.1016/j.matdes.2013.01.039

Cite this

@article{1061b7e9cc584e4aa41b4d447fcee79f,

title = "Influence of the microstructure evolution of ZrO2 fiber on the fracture toughness of ZrB2-SiC nanocomposite ceramics",

abstract = "ZrB2-SiC nanocomposite ceramics toughened by ZrO2 fiber were fabricated by spark plasma sintering (SPS) at 1700°C. The content of ZrO2 fiber incorporated into the ZrB2-SiC nanocomposites ranged from 5mass\% to 20mass\%. The content, microstructure, and phase transformation of ZrO2 fiber exhibited remarkable effects on the fracture toughness of the ZrO2(f)/ZrB2-SiC composites. Fracture toughness of the composites greatly improved to a maximum value of 6.56MPam1/2±0.3MPam1/2 by the addition of 15mass\% of ZrO2 fiber. The microstructure of the ZrO2 fiber exhibited certain alterations after the SPS process, which enhanced crack deflection and crack bridging and affected fracture toughness. Some microcracks were induced by the phase transformation from t-ZrO2 to m-ZrO2, which was also an important reason behind the improvement in toughness.",

author = "Shubin Wang and Yue Li and Xinghong Zhang",

year = "2013",

month = aug,

doi = "10.1016/j.matdes.2013.01.039",

language = "英语",

volume = "49",

pages = "808--813",

journal = "Materials and Design",

issn = "0264-1275",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Influence of the microstructure evolution of ZrO2 fiber on the fracture toughness of ZrB2-SiC nanocomposite ceramics

AU - Wang, Shubin

AU - Li, Yue

AU - Zhang, Xinghong

PY - 2013/8

Y1 - 2013/8

N2 - ZrB2-SiC nanocomposite ceramics toughened by ZrO2 fiber were fabricated by spark plasma sintering (SPS) at 1700°C. The content of ZrO2 fiber incorporated into the ZrB2-SiC nanocomposites ranged from 5mass% to 20mass%. The content, microstructure, and phase transformation of ZrO2 fiber exhibited remarkable effects on the fracture toughness of the ZrO2(f)/ZrB2-SiC composites. Fracture toughness of the composites greatly improved to a maximum value of 6.56MPam1/2±0.3MPam1/2 by the addition of 15mass% of ZrO2 fiber. The microstructure of the ZrO2 fiber exhibited certain alterations after the SPS process, which enhanced crack deflection and crack bridging and affected fracture toughness. Some microcracks were induced by the phase transformation from t-ZrO2 to m-ZrO2, which was also an important reason behind the improvement in toughness.

AB - ZrB2-SiC nanocomposite ceramics toughened by ZrO2 fiber were fabricated by spark plasma sintering (SPS) at 1700°C. The content of ZrO2 fiber incorporated into the ZrB2-SiC nanocomposites ranged from 5mass% to 20mass%. The content, microstructure, and phase transformation of ZrO2 fiber exhibited remarkable effects on the fracture toughness of the ZrO2(f)/ZrB2-SiC composites. Fracture toughness of the composites greatly improved to a maximum value of 6.56MPam1/2±0.3MPam1/2 by the addition of 15mass% of ZrO2 fiber. The microstructure of the ZrO2 fiber exhibited certain alterations after the SPS process, which enhanced crack deflection and crack bridging and affected fracture toughness. Some microcracks were induced by the phase transformation from t-ZrO2 to m-ZrO2, which was also an important reason behind the improvement in toughness.

UR - https://www.scopus.com/pages/publications/84875031343

U2 - 10.1016/j.matdes.2013.01.039

DO - 10.1016/j.matdes.2013.01.039

M3 - 文章

AN - SCOPUS:84875031343

SN - 0264-1275

VL - 49

SP - 808

EP - 813

JO - Materials and Design

JF - Materials and Design

ER -

Influence of the microstructure evolution of ZrO₂ fiber on the fracture toughness of ZrB₂-SiC nanocomposite ceramics

Abstract

Access to Document

Other files and links

Fingerprint

Cite this