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α-SiAlON Grains with High Aspect Ratio—Utopia Or Reality?

Shen, Z. J. / Nordberg, L.-O. / Nygren, M. / Ekström, T.

Abstract It is generally accepted that β-sialon grains can occur in elongated shapes, but that α sialon can only form equi-axed grains. Unexpected evidence of the formation of elongated α-sialon grains was noticed in our recent work, however. The morphology of α-sialon grains was found to vary significantly with composition, and elongation occurred more frequently with certain rare earth dopants. Elongated α-sialon grains were obtained for the most oxygen-rich compositions, i. e. in samples where extended transient liquid formation occurs. In this presentation, we will discuss how the morphology of α-sialon grains varies with composition, with the type of rare earth dopant used, and with the processing parameters applied.

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α-SiAlON Grains with High Aspect Ratio—Utopia Or Reality?

Shen, Z. J. / Nordberg, L.-O. / Nygren, M. / Ekström, T.

Abstract It is generally accepted that β-sialon grains can occur in elongated shapes, but that α sialon can only form equi-axed grains. Unexpected evidence of the formation of elongated α-sialon grains was noticed in our recent work, however. The morphology of α-sialon grains was found to vary significantly with composition, and elongation occurred more frequently with certain rare earth dopants. Elongated α-sialon grains were obtained for the most oxygen-rich compositions, i. e. in samples where extended transient liquid formation occurs. In this presentation, we will discuss how the morphology of α-sialon grains varies with composition, with the type of rare earth dopant used, and with the processing parameters applied.

α-SiAlON Grains with High Aspect Ratio—Utopia Or Reality?

Shen, Z. J. / Nordberg, L.-O. / Nygren, M. / Ekström, T.

Abstract It is generally accepted that β-sialon grains can occur in elongated shapes, but that α sialon can only form equi-axed grains. Unexpected evidence of the formation of elongated α-sialon grains was noticed in our recent work, however. The morphology of α-sialon grains was found to vary significantly with composition, and elongation occurred more frequently with certain rare earth dopants. Elongated α-sialon grains were obtained for the most oxygen-rich compositions, i. e. in samples where extended transient liquid formation occurs. In this presentation, we will discuss how the morphology of α-sialon grains varies with composition, with the type of rare earth dopant used, and with the processing parameters applied.

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Titel:

α-SiAlON Grains with High Aspect Ratio—Utopia Or Reality?

Beteiligte:

Shen, Z. J. (Autor:in) / Nordberg, L.-O. (Autor:in) / Nygren, M. (Autor:in) / Ekström, T. (Autor:in)

Erschienen in:

Engineering Ceramics ’96: Higher Reliability through Processing ; 169-178

NATO ASI Series ; 25

Erscheinungsdatum:

01.01.1997

Format / Umfang:

10 pages

ISBN:

978-94-011-5798-8 , 978-94-010-6448-4

ISSN:

DOI:

https://doi.org/10.1007/978-94-011-5798-8_13

Medientyp:

Aufsatz/Kapitel (Buch)

Format:

Elektronische Ressource

Sprache:

Englisch

Schlagwörter:

Fracture Toughness , Pressure Direction , Rare Earth Dopant , Intergranular Phase , Heating Profile Engineering , Industrial and Production Engineering , Materials Science, general , Ceramics, Glass, Composites, Natural Methods , Characterization and Evaluation of Materials , Inorganic Chemistry

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