The effect of yttrium nitrate addition on the densification behaviour of Y2O3 ceramics during the cold sintering process

Doyun Lee; Jung A. Lee; Young Woo Heo; Joon Hyung Lee; Jae Il Jung; Jeong Joo Kim

doi:10.1016/j.jeurceramsoc.2020.02.025

The effect of yttrium nitrate addition on the densification behaviour of Y₂O₃ ceramics during the cold sintering process

Doyun Lee, Jung A. Lee, Young Woo Heo, Joon Hyung Lee, Jae Il Jung, Jeong Joo Kim

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

7 Scopus citations

Abstract

The densification behaviour and phase development of Y₂O₃ ceramics were investigated as a function of yttrium nitrate (Y(NO₃)₃·6H₂O) solution addition during the cold sintering process at 200 °C. Second phases such as Y₄O(OH)₉NO₃ and Y(OH)₃ were observed after the cold sintering process. The amount of Y₄O(OH)₉NO₃ increased with increasing amount of yttrium nitrate, while the amount of Y(OH)₃ decreased. The second phases were transformed to fine sized Y₂O₃ (∼30 nm) particles smaller than those of the raw powder (<400 μm) by sintering at 600 °C. The fine sized Y₂O₃ particles were located in the voids between the larger Y₂O₃ particles, thus increasing the packing density and enhancing the densification of the Y₂O₃ ceramics after the final sintering process.

Original language	English
Pages (from-to)	3208-3214
Number of pages	7
Journal	Journal of the European Ceramic Society
Volume	40
Issue number	8
DOIs	https://doi.org/10.1016/j.jeurceramsoc.2020.02.025
State	Published - Jul 2020

Keywords

Cold sintering process
Densification
Low-temperature sintering
YO

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title = "The effect of yttrium nitrate addition on the densification behaviour of Y2O3 ceramics during the cold sintering process",

abstract = "The densification behaviour and phase development of Y2O3 ceramics were investigated as a function of yttrium nitrate (Y(NO3)3·6H2O) solution addition during the cold sintering process at 200 °C. Second phases such as Y4O(OH)9NO3 and Y(OH)3 were observed after the cold sintering process. The amount of Y4O(OH)9NO3 increased with increasing amount of yttrium nitrate, while the amount of Y(OH)3 decreased. The second phases were transformed to fine sized Y2O3 (∼30 nm) particles smaller than those of the raw powder (<400 μm) by sintering at 600 °C. The fine sized Y2O3 particles were located in the voids between the larger Y2O3 particles, thus increasing the packing density and enhancing the densification of the Y2O3 ceramics after the final sintering process.",

keywords = "Cold sintering process, Densification, Low-temperature sintering, YO",

author = "Doyun Lee and Lee, {Jung A.} and Heo, {Young Woo} and Lee, {Joon Hyung} and Jung, {Jae Il} and Kim, {Jeong Joo}",

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year = "2020",

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doi = "10.1016/j.jeurceramsoc.2020.02.025",

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AU - Lee, Doyun

AU - Lee, Jung A.

AU - Heo, Young Woo

AU - Lee, Joon Hyung

AU - Jung, Jae Il

AU - Kim, Jeong Joo

PY - 2020/7

Y1 - 2020/7

N2 - The densification behaviour and phase development of Y2O3 ceramics were investigated as a function of yttrium nitrate (Y(NO3)3·6H2O) solution addition during the cold sintering process at 200 °C. Second phases such as Y4O(OH)9NO3 and Y(OH)3 were observed after the cold sintering process. The amount of Y4O(OH)9NO3 increased with increasing amount of yttrium nitrate, while the amount of Y(OH)3 decreased. The second phases were transformed to fine sized Y2O3 (∼30 nm) particles smaller than those of the raw powder (<400 μm) by sintering at 600 °C. The fine sized Y2O3 particles were located in the voids between the larger Y2O3 particles, thus increasing the packing density and enhancing the densification of the Y2O3 ceramics after the final sintering process.

AB - The densification behaviour and phase development of Y2O3 ceramics were investigated as a function of yttrium nitrate (Y(NO3)3·6H2O) solution addition during the cold sintering process at 200 °C. Second phases such as Y4O(OH)9NO3 and Y(OH)3 were observed after the cold sintering process. The amount of Y4O(OH)9NO3 increased with increasing amount of yttrium nitrate, while the amount of Y(OH)3 decreased. The second phases were transformed to fine sized Y2O3 (∼30 nm) particles smaller than those of the raw powder (<400 μm) by sintering at 600 °C. The fine sized Y2O3 particles were located in the voids between the larger Y2O3 particles, thus increasing the packing density and enhancing the densification of the Y2O3 ceramics after the final sintering process.

KW - Cold sintering process

KW - Densification

KW - Low-temperature sintering

KW - YO

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ER -

The effect of yttrium nitrate addition on the densification behaviour of Y₂O₃ ceramics during the cold sintering process

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Keywords

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