Surface preoxidation to improve dispersibility of zirconium diboride in aqueous medium

R. J. He; R. B. Zhang; K. Wei; X. M. Cheng

doi:10.1179/1743676114Y.0000000150

Surface preoxidation to improve dispersibility of zirconium diboride in aqueous medium

R. J. He^*, R. B. Zhang, K. Wei, X. M. Cheng

^*Corresponding author for this work

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

2 Citations (Scopus)

Abstract

The dispersibility of ZrB₂ particles in aqueous medium had a significant effect on colloidal forming processes of ZrB₂ based ultra high temperature ceramics. To improve the dispersibility of ZrB₂, surface preoxidation was developed. After preoxidation, a layer of oxides composed of ZrO₂ and B₂O₃ formed on particle surfaces. The dispersibility of ZrB₂ particles in aqueous medium was investigated using zeta potential measurements, sedimentation tests and viscosity measurements. The surface oxygen of ZrB₂ particle preoxidised at 800uC was 2.66±0.12 wt-%. It was found that ZrB ₂ had the best dispersibility and the lowest viscosity after surface preoxidation at 800°C for 1 h.

Original language	English
Pages (from-to)	311-314
Number of pages	4
Journal	Advances in Applied Ceramics
Volume	113
Issue number	5
DOIs	https://doi.org/10.1179/1743676114Y.0000000150
Publication status	Published - Jul 2014
Externally published	Yes

Keywords

Ceramic composites
Colloidal processing
Composite materials
Dispersion
Oxidation

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10.1179/1743676114Y.0000000150

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@article{f7c08149cea24ab59b6772630652ab01,

title = "Surface preoxidation to improve dispersibility of zirconium diboride in aqueous medium",

abstract = "The dispersibility of ZrB2 particles in aqueous medium had a significant effect on colloidal forming processes of ZrB2 based ultra high temperature ceramics. To improve the dispersibility of ZrB2, surface preoxidation was developed. After preoxidation, a layer of oxides composed of ZrO2 and B2O3 formed on particle surfaces. The dispersibility of ZrB2 particles in aqueous medium was investigated using zeta potential measurements, sedimentation tests and viscosity measurements. The surface oxygen of ZrB2 particle preoxidised at 800uC was 2.66±0.12 wt-%. It was found that ZrB 2 had the best dispersibility and the lowest viscosity after surface preoxidation at 800°C for 1 h.",

keywords = "Ceramic composites, Colloidal processing, Composite materials, Dispersion, Oxidation",

author = "He, {R. J.} and Zhang, {R. B.} and K. Wei and Cheng, {X. M.}",

year = "2014",

month = jul,

doi = "10.1179/1743676114Y.0000000150",

language = "English",

volume = "113",

pages = "311--314",

journal = "Advances in Applied Ceramics",

issn = "1743-6753",

publisher = "Maney Publishing",

number = "5",

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TY - JOUR

T1 - Surface preoxidation to improve dispersibility of zirconium diboride in aqueous medium

AU - He, R. J.

AU - Zhang, R. B.

AU - Wei, K.

AU - Cheng, X. M.

PY - 2014/7

Y1 - 2014/7

N2 - The dispersibility of ZrB2 particles in aqueous medium had a significant effect on colloidal forming processes of ZrB2 based ultra high temperature ceramics. To improve the dispersibility of ZrB2, surface preoxidation was developed. After preoxidation, a layer of oxides composed of ZrO2 and B2O3 formed on particle surfaces. The dispersibility of ZrB2 particles in aqueous medium was investigated using zeta potential measurements, sedimentation tests and viscosity measurements. The surface oxygen of ZrB2 particle preoxidised at 800uC was 2.66±0.12 wt-%. It was found that ZrB 2 had the best dispersibility and the lowest viscosity after surface preoxidation at 800°C for 1 h.

AB - The dispersibility of ZrB2 particles in aqueous medium had a significant effect on colloidal forming processes of ZrB2 based ultra high temperature ceramics. To improve the dispersibility of ZrB2, surface preoxidation was developed. After preoxidation, a layer of oxides composed of ZrO2 and B2O3 formed on particle surfaces. The dispersibility of ZrB2 particles in aqueous medium was investigated using zeta potential measurements, sedimentation tests and viscosity measurements. The surface oxygen of ZrB2 particle preoxidised at 800uC was 2.66±0.12 wt-%. It was found that ZrB 2 had the best dispersibility and the lowest viscosity after surface preoxidation at 800°C for 1 h.

KW - Ceramic composites

KW - Colloidal processing

KW - Composite materials

KW - Dispersion

KW - Oxidation

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U2 - 10.1179/1743676114Y.0000000150

DO - 10.1179/1743676114Y.0000000150

M3 - Article

AN - SCOPUS:84903637402

SN - 1743-6753

VL - 113

SP - 311

EP - 314

JO - Advances in Applied Ceramics

JF - Advances in Applied Ceramics

IS - 5

ER -

Surface preoxidation to improve dispersibility of zirconium diboride in aqueous medium

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