Inhibiting effect of additives on formation of ZrC phase in ZrB 2-BN composites by reactive hot pressing

Lei Chen; Yujin Wang; Lei Cui; Yu Zhou; Guiming Song

doi:10.1111/j.1551-2916.2012.05454.x

Inhibiting effect of additives on formation of ZrC phase in ZrB ₂-BN composites by reactive hot pressing

Lei Chen
, Yujin Wang^*
, Lei Cui
, Yu Zhou
, Guiming Song

^*Corresponding author for this work

Harbin Institute of Technology
Xycarb Ceramics

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

7 Scopus citations

Abstract

The ZrB ₂-BN composite without ZrC impurity was prepared successfully using reactive hot pressing via carbothermal reduction of ZrO ₂ with B ₄C, C, and BN powders. The influences of additives and sintering temperature on the phase and microstructure of composites were investigated. The formation reaction of ZrC was inhibited by decreasing the evaporation of intermediate product B ₂O ₃ due to forming a SiO ₂-B ₂O ₃ eutectic system with the addition of SiO ₂ or SiO ₂-CaF ₂. In comparison, SiO ₂-CaF ₂ exhibited better inhibition capacity of ZrC. ZrB ₂-BN composite without impure ZrC phase was achieved. In addition, the content of ZrO ₂ decreased with increasing sintering temperature, and finally disappeared when sintered at 1800°C. Moreover, the relative density of the ZrB ₂-BN composite reached 96.9%.

Original language	English
Pages (from-to)	3374-3376
Number of pages	3
Journal	Journal of the American Ceramic Society
Volume	95
Issue number	11
DOIs	https://doi.org/10.1111/j.1551-2916.2012.05454.x
State	Published - Nov 2012

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10.1111/j.1551-2916.2012.05454.x

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@article{5e521d57d41a43678c944405d9dd587d,

title = "Inhibiting effect of additives on formation of ZrC phase in ZrB 2-BN composites by reactive hot pressing",

abstract = "The ZrB 2-BN composite without ZrC impurity was prepared successfully using reactive hot pressing via carbothermal reduction of ZrO 2 with B 4C, C, and BN powders. The influences of additives and sintering temperature on the phase and microstructure of composites were investigated. The formation reaction of ZrC was inhibited by decreasing the evaporation of intermediate product B 2O 3 due to forming a SiO 2-B 2O 3 eutectic system with the addition of SiO 2 or SiO 2-CaF 2. In comparison, SiO 2-CaF 2 exhibited better inhibition capacity of ZrC. ZrB 2-BN composite without impure ZrC phase was achieved. In addition, the content of ZrO 2 decreased with increasing sintering temperature, and finally disappeared when sintered at 1800°C. Moreover, the relative density of the ZrB 2-BN composite reached 96.9\%.",

author = "Lei Chen and Yujin Wang and Lei Cui and Yu Zhou and Guiming Song",

year = "2012",

month = nov,

doi = "10.1111/j.1551-2916.2012.05454.x",

language = "英语",

volume = "95",

pages = "3374--3376",

journal = "Journal of the American Ceramic Society",

issn = "0002-7820",

publisher = "Wiley-Blackwell",

number = "11",

}

TY - JOUR

T1 - Inhibiting effect of additives on formation of ZrC phase in ZrB 2-BN composites by reactive hot pressing

AU - Chen, Lei

AU - Wang, Yujin

AU - Cui, Lei

AU - Zhou, Yu

AU - Song, Guiming

PY - 2012/11

Y1 - 2012/11

N2 - The ZrB 2-BN composite without ZrC impurity was prepared successfully using reactive hot pressing via carbothermal reduction of ZrO 2 with B 4C, C, and BN powders. The influences of additives and sintering temperature on the phase and microstructure of composites were investigated. The formation reaction of ZrC was inhibited by decreasing the evaporation of intermediate product B 2O 3 due to forming a SiO 2-B 2O 3 eutectic system with the addition of SiO 2 or SiO 2-CaF 2. In comparison, SiO 2-CaF 2 exhibited better inhibition capacity of ZrC. ZrB 2-BN composite without impure ZrC phase was achieved. In addition, the content of ZrO 2 decreased with increasing sintering temperature, and finally disappeared when sintered at 1800°C. Moreover, the relative density of the ZrB 2-BN composite reached 96.9%.

AB - The ZrB 2-BN composite without ZrC impurity was prepared successfully using reactive hot pressing via carbothermal reduction of ZrO 2 with B 4C, C, and BN powders. The influences of additives and sintering temperature on the phase and microstructure of composites were investigated. The formation reaction of ZrC was inhibited by decreasing the evaporation of intermediate product B 2O 3 due to forming a SiO 2-B 2O 3 eutectic system with the addition of SiO 2 or SiO 2-CaF 2. In comparison, SiO 2-CaF 2 exhibited better inhibition capacity of ZrC. ZrB 2-BN composite without impure ZrC phase was achieved. In addition, the content of ZrO 2 decreased with increasing sintering temperature, and finally disappeared when sintered at 1800°C. Moreover, the relative density of the ZrB 2-BN composite reached 96.9%.

UR - https://www.scopus.com/pages/publications/84868458107

U2 - 10.1111/j.1551-2916.2012.05454.x

DO - 10.1111/j.1551-2916.2012.05454.x

M3 - 文章

AN - SCOPUS:84868458107

SN - 0002-7820

VL - 95

SP - 3374

EP - 3376

JO - Journal of the American Ceramic Society

JF - Journal of the American Ceramic Society

IS - 11

ER -

Inhibiting effect of additives on formation of ZrC phase in ZrB ₂-BN composites by reactive hot pressing

Abstract

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