Preparation of ZrB2-SiC ceramics by single-step and optimized two-step hot pressing using nanosized ZrB2 powders

Ping Hu; Kaixuan Gui; Wenhu Hong; Xinghong Zhang

doi:10.1016/j.matlet.2017.04.089

Preparation of ZrB₂-SiC ceramics by single-step and optimized two-step hot pressing using nanosized ZrB₂ powders

Ping Hu
, Kaixuan Gui
, Wenhu Hong
, Xinghong Zhang

School of Astronautics

Harbin Institute of Technology

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

21 Scopus citations

Abstract

ZrB₂-SiC ceramics were prepared by single-step hot pressing in the temperature range of 1500 ∼ 1800 °C using nanosized ZrB₂ powders. Dense ZrB₂-SiC with high flexural strength (1044 ± 79 MPa) and fracture toughness (6.21 ± 0.25 MPa·m^1/2) was obtained at 1800 °C. An optimized two-step hot pressing process was designed and showed great advantages in fabricating of ZrB₂-SiC ceramic with a high relative density (>98%) at low temperature. Furthermore, a high flexural strength (901 ± 65 MPa) was obtained, much higher than that of ZrB₂-SiC (587 ± 72 MPa) by single-step hot pressing at the same sintering temperature.

Original language	English
Pages (from-to)	14-17
Number of pages	4
Journal	Materials Letters
Volume	200
DOIs	https://doi.org/10.1016/j.matlet.2017.04.089
State	Published - 1 Aug 2017

Keywords

Ceramics
Flexural strength
Hot pressing
Nanosize
ZrB

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10.1016/j.matlet.2017.04.089

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title = "Preparation of ZrB2-SiC ceramics by single-step and optimized two-step hot pressing using nanosized ZrB2 powders",

abstract = "ZrB2-SiC ceramics were prepared by single-step hot pressing in the temperature range of 1500 ∼ 1800 °C using nanosized ZrB2 powders. Dense ZrB2-SiC with high flexural strength (1044 ± 79 MPa) and fracture toughness (6.21 ± 0.25 MPa·m1/2) was obtained at 1800 °C. An optimized two-step hot pressing process was designed and showed great advantages in fabricating of ZrB2-SiC ceramic with a high relative density (>98\%) at low temperature. Furthermore, a high flexural strength (901 ± 65 MPa) was obtained, much higher than that of ZrB2-SiC (587 ± 72 MPa) by single-step hot pressing at the same sintering temperature.",

keywords = "Ceramics, Flexural strength, Hot pressing, Nanosize, ZrB",

author = "Ping Hu and Kaixuan Gui and Wenhu Hong and Xinghong Zhang",

note = "Publisher Copyright: {\textcopyright} 2017 Elsevier B.V.",

year = "2017",

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doi = "10.1016/j.matlet.2017.04.089",

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TY - JOUR

T1 - Preparation of ZrB2-SiC ceramics by single-step and optimized two-step hot pressing using nanosized ZrB2 powders

AU - Hu, Ping

AU - Gui, Kaixuan

AU - Hong, Wenhu

AU - Zhang, Xinghong

PY - 2017/8/1

Y1 - 2017/8/1

N2 - ZrB2-SiC ceramics were prepared by single-step hot pressing in the temperature range of 1500 ∼ 1800 °C using nanosized ZrB2 powders. Dense ZrB2-SiC with high flexural strength (1044 ± 79 MPa) and fracture toughness (6.21 ± 0.25 MPa·m1/2) was obtained at 1800 °C. An optimized two-step hot pressing process was designed and showed great advantages in fabricating of ZrB2-SiC ceramic with a high relative density (>98%) at low temperature. Furthermore, a high flexural strength (901 ± 65 MPa) was obtained, much higher than that of ZrB2-SiC (587 ± 72 MPa) by single-step hot pressing at the same sintering temperature.

AB - ZrB2-SiC ceramics were prepared by single-step hot pressing in the temperature range of 1500 ∼ 1800 °C using nanosized ZrB2 powders. Dense ZrB2-SiC with high flexural strength (1044 ± 79 MPa) and fracture toughness (6.21 ± 0.25 MPa·m1/2) was obtained at 1800 °C. An optimized two-step hot pressing process was designed and showed great advantages in fabricating of ZrB2-SiC ceramic with a high relative density (>98%) at low temperature. Furthermore, a high flexural strength (901 ± 65 MPa) was obtained, much higher than that of ZrB2-SiC (587 ± 72 MPa) by single-step hot pressing at the same sintering temperature.

KW - Ceramics

KW - Flexural strength

KW - Hot pressing

KW - Nanosize

KW - ZrB

UR - https://www.scopus.com/pages/publications/85018535811

U2 - 10.1016/j.matlet.2017.04.089

DO - 10.1016/j.matlet.2017.04.089

M3 - 文章

AN - SCOPUS:85018535811

SN - 0167-577X

VL - 200

SP - 14

EP - 17

JO - Materials Letters

JF - Materials Letters

ER -

Preparation of ZrB₂-SiC ceramics by single-step and optimized two-step hot pressing using nanosized ZrB₂ powders

Abstract

Keywords

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