Effect of sintering atmospheres on the densification behavior of CuO ceramics

Ju Hyun Song; Jung A. Lee; Joon Hyung Lee; Young Woo Heo; Jeong Joo Kim

doi:10.1016/j.ceramint.2012.10.085

Effect of sintering atmospheres on the densification behavior of CuO ceramics

Ju Hyun Song, Jung A. Lee, Joon Hyung Lee, Young Woo Heo, Jeong Joo Kim

Kyungpook National University

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

3 Scopus citations

Abstract

In this study, the effect of oxygen partial pressure on the densification and the resultant microstructure change of CuO were examined. When CuO green bodies were heated up to 1100 °C for sintering in air, denser CuO samples were obtained than the samples sintered in oxygen. When the samples were kept at 1100 °C for a prolonged period of time, however, the densification of the sample in oxygen was accelerated whereas that of the sample in air was hindered. This is attributed to the phase transformation from CuO to Cu₂O which accompanies oxygen release during sintering in air. On the basis of the results, dense CuO samples could be obtained by switching the sintering atmosphere from air to oxygen at the suitable stage so that oxygen release by reduction could be suppressed.

Original language	English
Pages (from-to)	S315-S319
Journal	Ceramics International
Volume	39
Issue number	SUPPL.1
DOIs	https://doi.org/10.1016/j.ceramint.2012.10.085
State	Published - May 2013

Keywords

A. Sintering
B. Microstructure-final
C. Diffusion
Phase transformation

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10.1016/j.ceramint.2012.10.085

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title = "Effect of sintering atmospheres on the densification behavior of CuO ceramics",

abstract = "In this study, the effect of oxygen partial pressure on the densification and the resultant microstructure change of CuO were examined. When CuO green bodies were heated up to 1100 °C for sintering in air, denser CuO samples were obtained than the samples sintered in oxygen. When the samples were kept at 1100 °C for a prolonged period of time, however, the densification of the sample in oxygen was accelerated whereas that of the sample in air was hindered. This is attributed to the phase transformation from CuO to Cu2O which accompanies oxygen release during sintering in air. On the basis of the results, dense CuO samples could be obtained by switching the sintering atmosphere from air to oxygen at the suitable stage so that oxygen release by reduction could be suppressed.",

keywords = "A. Sintering, B. Microstructure-final, C. Diffusion, Phase transformation",

author = "Song, {Ju Hyun} and Lee, {Jung A.} and Lee, {Joon Hyung} and Heo, {Young Woo} and Kim, {Jeong Joo}",

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doi = "10.1016/j.ceramint.2012.10.085",

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TY - JOUR

T1 - Effect of sintering atmospheres on the densification behavior of CuO ceramics

AU - Song, Ju Hyun

AU - Lee, Jung A.

AU - Lee, Joon Hyung

AU - Heo, Young Woo

AU - Kim, Jeong Joo

PY - 2013/5

Y1 - 2013/5

N2 - In this study, the effect of oxygen partial pressure on the densification and the resultant microstructure change of CuO were examined. When CuO green bodies were heated up to 1100 °C for sintering in air, denser CuO samples were obtained than the samples sintered in oxygen. When the samples were kept at 1100 °C for a prolonged period of time, however, the densification of the sample in oxygen was accelerated whereas that of the sample in air was hindered. This is attributed to the phase transformation from CuO to Cu2O which accompanies oxygen release during sintering in air. On the basis of the results, dense CuO samples could be obtained by switching the sintering atmosphere from air to oxygen at the suitable stage so that oxygen release by reduction could be suppressed.

AB - In this study, the effect of oxygen partial pressure on the densification and the resultant microstructure change of CuO were examined. When CuO green bodies were heated up to 1100 °C for sintering in air, denser CuO samples were obtained than the samples sintered in oxygen. When the samples were kept at 1100 °C for a prolonged period of time, however, the densification of the sample in oxygen was accelerated whereas that of the sample in air was hindered. This is attributed to the phase transformation from CuO to Cu2O which accompanies oxygen release during sintering in air. On the basis of the results, dense CuO samples could be obtained by switching the sintering atmosphere from air to oxygen at the suitable stage so that oxygen release by reduction could be suppressed.

KW - A. Sintering

KW - B. Microstructure-final

KW - C. Diffusion

KW - Phase transformation

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U2 - 10.1016/j.ceramint.2012.10.085

DO - 10.1016/j.ceramint.2012.10.085

M3 - Article

AN - SCOPUS:84875749011

SN - 0272-8842

VL - 39

SP - S315-S319

JO - Ceramics International

JF - Ceramics International

IS - SUPPL.1

ER -

Effect of sintering atmospheres on the densification behavior of CuO ceramics

Abstract

Keywords

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