Effects of particle size and oxygen contents on ZrB2 powder for densification (ZrB2 분말의 입도 및 산화도가 치밀화에 미치는 영향)

정세혁; Sungchurl Choi (최성철)

doi:10.6111/JKCGCT.2012.22.5.247

Effects of particle size and oxygen contents on ZrB2 powder for densification

Journal of the Korean Crystal Growth and Crystal Technology
Abbr : J. Korean Cryst. Growth Cryst. Technol.
2012, 22(5), pp.247-253
DOI : 10.6111/JKCGCT.2012.22.5.247
Publisher : The Korea Association Of Crystal Growth, Inc.
Research Area : Engineering > Materials Science and Engineering

정세혁 ¹, Sungchurl Choi ¹

¹한양대학교

Accredited

ABSTRACT

In this study, two pretreatment methods were used to improve the sinterability of zirconium diboride (ZrB2). As a mechanical treatment, as-received ZrB2 powder was crushed using SPEX mill from an average size of 2.61 μm to 0.35 μm. As a chemical treatment, oxygen contents of ZrB2 powder were decreased from 4.20 wt% to 2.22 wt% using a dilute hydrofluoric solution. The relative density of sintered ZrB2 increased with decreasing particle size and oxygen contents. But it is considered that particle size is more effective than oxygen contents for ZrB2 densification. Through the two pretreatment processes, we produced sintered ZrB2 ceramic with a full density without sintering additives. The sinterability of ZrB2 was improved by using mechanical and chemical pretreatment methods.

KEYWORDS

Zirconium diboride, Particle size, Oxygen contents, Densification

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* References for papers published after 2023 are currently being built.

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Journal of the Korean Crystal Growth and Crystal Technology 2023 KCI Impact Factor : 0.19

Effects of particle size and oxygen contents on ZrB2 powder for densification

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* References for papers published after 2023 are currently being built.

Journal of the Korean Crystal Growth and Crystal Technology 2023 KCI Impact Factor : 0.19

Effects of particle size and oxygen contents on ZrB2 powder for densification

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