The effect of heat-treatment on the performance of sub-micron SiCp-reinforced α-β sialon composites: II. Heat-treatment studies

Q. Liu; L. Gao; D. S. Yan; H. Mandal; D. P. Thompson

doi:10.1016/S0955-2219(96)00101-X

The effect of heat-treatment on the performance of sub-micron SiC_p-reinforced α-β sialon composites: II. Heat-treatment studies

Q. Liu^*, L. Gao, D. S. Yan, H. Mandal, D. P. Thompson

^*Corresponding author for this work

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

3 Citations (Scopus)

Abstract

The effects of heat-treatment on α → β sialon transformation in dense, agglomerate-free Ln-sialon/ SiC_p(Ln=Nd, Yb) composites are reported. The stability of the α-sialon phase is not only dependent on the temperature and time of heat-treatment, but also on the kind of additive and the amount of SiC particles. In Nd-densified samples, the a-sialon phase is very unstable at 1450°C and transforms almost totally to the β phase with the Nd-M (melilite) phase and NdAlO₃ as grain-boundary crystalline phases. In contrast, Yb³⁺-densified samples show good stability for the a-sialon phase at 1450°C, with only a small amount of β-sialon produced. The crystalline grain-boundary phases produced in this case are Yb-garnet, and Yb-J-phase.

Original language	English
Pages (from-to)	587-592
Number of pages	6
Journal	Journal of the European Ceramic Society
Volume	17
Issue number	4
DOIs	https://doi.org/10.1016/S0955-2219(96)00101-X
Publication status	Published - Feb 1997
Externally published	Yes

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title = "The effect of heat-treatment on the performance of sub-micron SiCp-reinforced α-β sialon composites: II. Heat-treatment studies",

abstract = "The effects of heat-treatment on α → β sialon transformation in dense, agglomerate-free Ln-sialon/ SiCp(Ln=Nd, Yb) composites are reported. The stability of the α-sialon phase is not only dependent on the temperature and time of heat-treatment, but also on the kind of additive and the amount of SiC particles. In Nd-densified samples, the a-sialon phase is very unstable at 1450°C and transforms almost totally to the β phase with the Nd-M (melilite) phase and NdAlO3 as grain-boundary crystalline phases. In contrast, Yb3+-densified samples show good stability for the a-sialon phase at 1450°C, with only a small amount of β-sialon produced. The crystalline grain-boundary phases produced in this case are Yb-garnet, and Yb-J-phase.",

author = "Q. Liu and L. Gao and Yan, {D. S.} and H. Mandal and Thompson, {D. P.}",

year = "1997",

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doi = "10.1016/S0955-2219(96)00101-X",

language = "English",

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journal = "Journal of the European Ceramic Society",

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TY - JOUR

T1 - The effect of heat-treatment on the performance of sub-micron SiCp-reinforced α-β sialon composites

T2 - II. Heat-treatment studies

AU - Liu, Q.

AU - Gao, L.

AU - Yan, D. S.

AU - Mandal, H.

AU - Thompson, D. P.

PY - 1997/2

Y1 - 1997/2

N2 - The effects of heat-treatment on α → β sialon transformation in dense, agglomerate-free Ln-sialon/ SiCp(Ln=Nd, Yb) composites are reported. The stability of the α-sialon phase is not only dependent on the temperature and time of heat-treatment, but also on the kind of additive and the amount of SiC particles. In Nd-densified samples, the a-sialon phase is very unstable at 1450°C and transforms almost totally to the β phase with the Nd-M (melilite) phase and NdAlO3 as grain-boundary crystalline phases. In contrast, Yb3+-densified samples show good stability for the a-sialon phase at 1450°C, with only a small amount of β-sialon produced. The crystalline grain-boundary phases produced in this case are Yb-garnet, and Yb-J-phase.

AB - The effects of heat-treatment on α → β sialon transformation in dense, agglomerate-free Ln-sialon/ SiCp(Ln=Nd, Yb) composites are reported. The stability of the α-sialon phase is not only dependent on the temperature and time of heat-treatment, but also on the kind of additive and the amount of SiC particles. In Nd-densified samples, the a-sialon phase is very unstable at 1450°C and transforms almost totally to the β phase with the Nd-M (melilite) phase and NdAlO3 as grain-boundary crystalline phases. In contrast, Yb3+-densified samples show good stability for the a-sialon phase at 1450°C, with only a small amount of β-sialon produced. The crystalline grain-boundary phases produced in this case are Yb-garnet, and Yb-J-phase.

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U2 - 10.1016/S0955-2219(96)00101-X

DO - 10.1016/S0955-2219(96)00101-X

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SN - 0955-2219

VL - 17

SP - 587

EP - 592

JO - Journal of the European Ceramic Society

JF - Journal of the European Ceramic Society

IS - 4

ER -

The effect of heat-treatment on the performance of sub-micron SiC_p-reinforced α-β sialon composites: II. Heat-treatment studies

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