ZrB2-ceramic toughened by refractory metal Nb prepared by hot-pressing

Xin Sun; Wenbo Han; Qiang Liu; Ping Hu; Changqing Hong

doi:10.1016/j.matdes.2010.04.020

ZrB₂-ceramic toughened by refractory metal Nb prepared by hot-pressing

Xin Sun^*
, Wenbo Han
, Qiang Liu
, Ping Hu
, Changqing Hong

^*Corresponding author for this work

Harbin Institute of Technology

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

49 Scopus citations

Abstract

ZrB₂-Nb (ZN) composites were prepared through hot-pressing at a temperature of 1800°C. A contribution of Nb was believed a significant influence on the sinterability, microstructure and mechanical properties of ZN composites. The values of flexural strength of ZN composites rang from 395 to 773MPa, who are dependent on Nb contents. The highest strength obtained for the ZN composite containing 25vol.% Nb (773MPa). A fracture toughness of 7.1MPam^1/2 of ZN was revealed, which was much higher than that of monolithic ZrB₂. The improvement in fracture toughness strongly depended on an introduction of Nb-ZrB₂ matrix. Crack deflection and branching were believed to be the toughening mechanism of ZN.

Original language	English
Pages (from-to)	4427-4431
Number of pages	5
Journal	Materials and Design
Volume	31
Issue number	9
DOIs	https://doi.org/10.1016/j.matdes.2010.04.020
State	Published - Oct 2010

Access to Document

10.1016/j.matdes.2010.04.020

Cite this

@article{3a2d46b9b2c140eb81ab344a52a5bf8f,

title = "ZrB2-ceramic toughened by refractory metal Nb prepared by hot-pressing",

abstract = "ZrB2-Nb (ZN) composites were prepared through hot-pressing at a temperature of 1800°C. A contribution of Nb was believed a significant influence on the sinterability, microstructure and mechanical properties of ZN composites. The values of flexural strength of ZN composites rang from 395 to 773MPa, who are dependent on Nb contents. The highest strength obtained for the ZN composite containing 25vol.\% Nb (773MPa). A fracture toughness of 7.1MPam1/2 of ZN was revealed, which was much higher than that of monolithic ZrB2. The improvement in fracture toughness strongly depended on an introduction of Nb-ZrB2 matrix. Crack deflection and branching were believed to be the toughening mechanism of ZN.",

author = "Xin Sun and Wenbo Han and Qiang Liu and Ping Hu and Changqing Hong",

year = "2010",

month = oct,

doi = "10.1016/j.matdes.2010.04.020",

language = "英语",

volume = "31",

pages = "4427--4431",

journal = "Materials and Design",

issn = "0264-1275",

publisher = "Elsevier B.V.",

number = "9",

}

TY - JOUR

T1 - ZrB2-ceramic toughened by refractory metal Nb prepared by hot-pressing

AU - Sun, Xin

AU - Han, Wenbo

AU - Liu, Qiang

AU - Hu, Ping

AU - Hong, Changqing

PY - 2010/10

Y1 - 2010/10

N2 - ZrB2-Nb (ZN) composites were prepared through hot-pressing at a temperature of 1800°C. A contribution of Nb was believed a significant influence on the sinterability, microstructure and mechanical properties of ZN composites. The values of flexural strength of ZN composites rang from 395 to 773MPa, who are dependent on Nb contents. The highest strength obtained for the ZN composite containing 25vol.% Nb (773MPa). A fracture toughness of 7.1MPam1/2 of ZN was revealed, which was much higher than that of monolithic ZrB2. The improvement in fracture toughness strongly depended on an introduction of Nb-ZrB2 matrix. Crack deflection and branching were believed to be the toughening mechanism of ZN.

AB - ZrB2-Nb (ZN) composites were prepared through hot-pressing at a temperature of 1800°C. A contribution of Nb was believed a significant influence on the sinterability, microstructure and mechanical properties of ZN composites. The values of flexural strength of ZN composites rang from 395 to 773MPa, who are dependent on Nb contents. The highest strength obtained for the ZN composite containing 25vol.% Nb (773MPa). A fracture toughness of 7.1MPam1/2 of ZN was revealed, which was much higher than that of monolithic ZrB2. The improvement in fracture toughness strongly depended on an introduction of Nb-ZrB2 matrix. Crack deflection and branching were believed to be the toughening mechanism of ZN.

UR - https://www.scopus.com/pages/publications/77953541028

U2 - 10.1016/j.matdes.2010.04.020

DO - 10.1016/j.matdes.2010.04.020

M3 - 文章

AN - SCOPUS:77953541028

SN - 0264-1275

VL - 31

SP - 4427

EP - 4431

JO - Materials and Design

JF - Materials and Design

IS - 9

ER -

ZrB₂-ceramic toughened by refractory metal Nb prepared by hot-pressing

Abstract

Access to Document

Other files and links

Fingerprint

Cite this