Solidification of superalloy in a SiO2-ZrO2-B2O3 coating mould

Feng Liu; Gencang Yang

doi:10.1016/S0022-3093(01)00813-4

Solidification of superalloy in a SiO₂-ZrO₂-B₂O₃ coating mould

Feng Liu, Gencang Yang

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

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

5 Scopus citations

Abstract

The preparation of glass-lined coating mould from gels in the ternary system of SiO₂-ZrO₂-B₂O₃ has been investigated. The crystallization characterization and high temperature structure stability of this coating mould are demonstrated. We can find that the crystallization of t-ZrO₂ as well as the tetragonal to monoclinic phase transformation are, respectively, retarded and impeded owing to the encasement of SiO₂ matrix. While the inhibitive effect of B₂O₃ on crystallization of the SiO₂-ZrO₂-B₂O₃ coating mould is explained. Finally, DD3 single crystal superalloy melt can realize highly undercooled rapid solidification by adopting this coating mould, which further evinces that SiO₂-ZrO₂-B₂O₃ coating mould has an ideal nucleation inhibition for superalloy.

Original language	English
Pages (from-to)	105-114
Number of pages	10
Journal	Journal of Non-Crystalline Solids
Volume	290
Issue number	2-3
DOIs	https://doi.org/10.1016/S0022-3093(01)00813-4
State	Published - Sep 2001

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title = "Solidification of superalloy in a SiO2-ZrO2-B2O3 coating mould",

abstract = "The preparation of glass-lined coating mould from gels in the ternary system of SiO2-ZrO2-B2O3 has been investigated. The crystallization characterization and high temperature structure stability of this coating mould are demonstrated. We can find that the crystallization of t-ZrO2 as well as the tetragonal to monoclinic phase transformation are, respectively, retarded and impeded owing to the encasement of SiO2 matrix. While the inhibitive effect of B2O3 on crystallization of the SiO2-ZrO2-B2O3 coating mould is explained. Finally, DD3 single crystal superalloy melt can realize highly undercooled rapid solidification by adopting this coating mould, which further evinces that SiO2-ZrO2-B2O3 coating mould has an ideal nucleation inhibition for superalloy.",

author = "Feng Liu and Gencang Yang",

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AU - Liu, Feng

AU - Yang, Gencang

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AB - The preparation of glass-lined coating mould from gels in the ternary system of SiO2-ZrO2-B2O3 has been investigated. The crystallization characterization and high temperature structure stability of this coating mould are demonstrated. We can find that the crystallization of t-ZrO2 as well as the tetragonal to monoclinic phase transformation are, respectively, retarded and impeded owing to the encasement of SiO2 matrix. While the inhibitive effect of B2O3 on crystallization of the SiO2-ZrO2-B2O3 coating mould is explained. Finally, DD3 single crystal superalloy melt can realize highly undercooled rapid solidification by adopting this coating mould, which further evinces that SiO2-ZrO2-B2O3 coating mould has an ideal nucleation inhibition for superalloy.

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Solidification of superalloy in a SiO₂-ZrO₂-B₂O₃ coating mould

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