High temperature creep of a hot-pressed β-sialon

M. T. Lin; J. L. Shi; D. Y. Jiang; M. L. Ruan; T. R. Lai

doi:10.1016/S0921-5093(00)01775-5

High temperature creep of a hot-pressed β-sialon

M. T. Lin, J. L. Shi, D. Y. Jiang, M. L. Ruan, T. R. Lai

CAS - Shanghai Institute of Ceramics

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

17 Scopus citations

Abstract

The four-point bending creep properties of a hot-pressed β-sialon with Sm-melilite solid solution (denoted as M′) as intergranular phase have been studied in the temperature range 1250-1350°C in air. Creep rates plotted against stresses gave stress exponents of 1.45, 1.51 and 1.72 at 1250, 1300 and 1350°C, respectively, and Arrhenius plot between creep rate and temperature yielded a creep activation energy of 576 kJ mol^-1. Cavities were found to be mainly on the triple grain junctions. Diffusion coupled with grain boundary sliding and accompanied by the formation of wedge-shaped cavities was identified as the dominant creep mechanism.

Original language	English
Pages (from-to)	61-67
Number of pages	7
Journal	Materials Science and Engineering: A
Volume	300
Issue number	1-2
DOIs	https://doi.org/10.1016/S0921-5093(00)01775-5
State	Published - 28 Feb 2001
Externally published	Yes

Keywords

Creep
Oxidation
β-Sialon

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10.1016/S0921-5093(00)01775-5

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title = "High temperature creep of a hot-pressed β-sialon",

abstract = "The four-point bending creep properties of a hot-pressed β-sialon with Sm-melilite solid solution (denoted as M′) as intergranular phase have been studied in the temperature range 1250-1350°C in air. Creep rates plotted against stresses gave stress exponents of 1.45, 1.51 and 1.72 at 1250, 1300 and 1350°C, respectively, and Arrhenius plot between creep rate and temperature yielded a creep activation energy of 576 kJ mol-1. Cavities were found to be mainly on the triple grain junctions. Diffusion coupled with grain boundary sliding and accompanied by the formation of wedge-shaped cavities was identified as the dominant creep mechanism.",

keywords = "Creep, Oxidation, β-Sialon",

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doi = "10.1016/S0921-5093(00)01775-5",

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TY - JOUR

T1 - High temperature creep of a hot-pressed β-sialon

AU - Lin, M. T.

AU - Shi, J. L.

AU - Jiang, D. Y.

AU - Ruan, M. L.

AU - Lai, T. R.

PY - 2001/2/28

Y1 - 2001/2/28

N2 - The four-point bending creep properties of a hot-pressed β-sialon with Sm-melilite solid solution (denoted as M′) as intergranular phase have been studied in the temperature range 1250-1350°C in air. Creep rates plotted against stresses gave stress exponents of 1.45, 1.51 and 1.72 at 1250, 1300 and 1350°C, respectively, and Arrhenius plot between creep rate and temperature yielded a creep activation energy of 576 kJ mol-1. Cavities were found to be mainly on the triple grain junctions. Diffusion coupled with grain boundary sliding and accompanied by the formation of wedge-shaped cavities was identified as the dominant creep mechanism.

AB - The four-point bending creep properties of a hot-pressed β-sialon with Sm-melilite solid solution (denoted as M′) as intergranular phase have been studied in the temperature range 1250-1350°C in air. Creep rates plotted against stresses gave stress exponents of 1.45, 1.51 and 1.72 at 1250, 1300 and 1350°C, respectively, and Arrhenius plot between creep rate and temperature yielded a creep activation energy of 576 kJ mol-1. Cavities were found to be mainly on the triple grain junctions. Diffusion coupled with grain boundary sliding and accompanied by the formation of wedge-shaped cavities was identified as the dominant creep mechanism.

KW - Creep

KW - Oxidation

KW - β-Sialon

UR - https://www.scopus.com/pages/publications/0035961162

U2 - 10.1016/S0921-5093(00)01775-5

DO - 10.1016/S0921-5093(00)01775-5

M3 - 文章

AN - SCOPUS:0035961162

SN - 0921-5093

VL - 300

SP - 61

EP - 67

JO - Materials Science and Engineering: A

JF - Materials Science and Engineering: A

IS - 1-2

ER -

High temperature creep of a hot-pressed β-sialon

Abstract

Keywords

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