Pressureless sintering ZrB2-SiC ceramics at low temperatures

Miao Zhu; Yiguang Wang

doi:10.1016/j.matlet.2009.06.041

Pressureless sintering ZrB₂-SiC ceramics at low temperatures

Miao Zhu, Yiguang Wang^*

^*Corresponding author for this work

Northwestern Polytechnical University Xian

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

27 Citations (Scopus)

Abstract

ZrB₂-SiC ceramics are prepared by pressureless sintering using ZrB₂ powders and liquid polycarbosilane (LPCS) precursors. The LPCS can effectively reduce the sintering temperature. The phases of the sintered ceramics are characterized by X-ray diffraction, and their morphologies are observed by scanning electron microscopy. From these results, it is learned that LPCS can provide free carbon and silicon at high temperatures. Therefore, the oxides on the ZrB₂ surface can be removed by free carbon, and the densification process can be promoted by silicon. These coupled effects make it possible to pressureless sinter the ZB₂-SiC ceramics at low temperatures.

Original language	English
Pages (from-to)	2035-2037
Number of pages	3
Journal	Materials Letters
Volume	63
Issue number	23
DOIs	https://doi.org/10.1016/j.matlet.2009.06.041
Publication status	Published - 30 Sept 2009
Externally published	Yes

Keywords

Ceramics
Sintering

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10.1016/j.matlet.2009.06.041

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abstract = "ZrB2-SiC ceramics are prepared by pressureless sintering using ZrB2 powders and liquid polycarbosilane (LPCS) precursors. The LPCS can effectively reduce the sintering temperature. The phases of the sintered ceramics are characterized by X-ray diffraction, and their morphologies are observed by scanning electron microscopy. From these results, it is learned that LPCS can provide free carbon and silicon at high temperatures. Therefore, the oxides on the ZrB2 surface can be removed by free carbon, and the densification process can be promoted by silicon. These coupled effects make it possible to pressureless sinter the ZB2-SiC ceramics at low temperatures.",

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AU - Zhu, Miao

AU - Wang, Yiguang

PY - 2009/9/30

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N2 - ZrB2-SiC ceramics are prepared by pressureless sintering using ZrB2 powders and liquid polycarbosilane (LPCS) precursors. The LPCS can effectively reduce the sintering temperature. The phases of the sintered ceramics are characterized by X-ray diffraction, and their morphologies are observed by scanning electron microscopy. From these results, it is learned that LPCS can provide free carbon and silicon at high temperatures. Therefore, the oxides on the ZrB2 surface can be removed by free carbon, and the densification process can be promoted by silicon. These coupled effects make it possible to pressureless sinter the ZB2-SiC ceramics at low temperatures.

AB - ZrB2-SiC ceramics are prepared by pressureless sintering using ZrB2 powders and liquid polycarbosilane (LPCS) precursors. The LPCS can effectively reduce the sintering temperature. The phases of the sintered ceramics are characterized by X-ray diffraction, and their morphologies are observed by scanning electron microscopy. From these results, it is learned that LPCS can provide free carbon and silicon at high temperatures. Therefore, the oxides on the ZrB2 surface can be removed by free carbon, and the densification process can be promoted by silicon. These coupled effects make it possible to pressureless sinter the ZB2-SiC ceramics at low temperatures.

KW - Ceramics

KW - Sintering

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SP - 2035

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JO - Materials Letters

JF - Materials Letters

IS - 23

ER -

Pressureless sintering ZrB₂-SiC ceramics at low temperatures

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Keywords

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