High-temperature strength and oxidation behavior of Sc3+/Lu3+ co-doped α-sialon

Chunfeng Liu; Feng Ye; Limeng Liu; Yu Zhou

doi:10.1016/j.scriptamat.2009.01.018

High-temperature strength and oxidation behavior of Sc³⁺/Lu³⁺ co-doped α-sialon

Chunfeng Liu
, Feng Ye^*
, Limeng Liu
, Yu Zhou

^*Corresponding author for this work

Harbin Institute of Technology

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

10 Scopus citations

Abstract

The high-temperature strength and oxidation behavior of hot-pressed ScLu-α-sialon were investigated. The flexural strength at 1400 °C could reach 611 MPa, which was ∼94% of the room-temperature strength. A thin, dense oxidation scale was formed after exposure to air at 1300 °C. It exhibits parabolic oxidation behavior, with a maximum specific weight gain of 0.686 mg cm^-2 and a rate constant of 4.21 × 10^-6 mg² cm^-4 s^-1 at 1300 °C. The excellent performance is attributed to the elimination of amorphous grain-boundary phase and formation of refractory secondary phases.

Original language	English
Pages (from-to)	929-932
Number of pages	4
Journal	Scripta Materialia
Volume	60
Issue number	11
DOIs	https://doi.org/10.1016/j.scriptamat.2009.01.018
State	Published - Jun 2009
Externally published	Yes

Keywords

High-temperature strength
LuO
Oxidation
ScO
α-Sialon

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10.1016/j.scriptamat.2009.01.018

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title = "High-temperature strength and oxidation behavior of Sc3+/Lu3+ co-doped α-sialon",

abstract = "The high-temperature strength and oxidation behavior of hot-pressed ScLu-α-sialon were investigated. The flexural strength at 1400 °C could reach 611 MPa, which was ∼94\% of the room-temperature strength. A thin, dense oxidation scale was formed after exposure to air at 1300 °C. It exhibits parabolic oxidation behavior, with a maximum specific weight gain of 0.686 mg cm-2 and a rate constant of 4.21 × 10-6 mg2 cm-4 s-1 at 1300 °C. The excellent performance is attributed to the elimination of amorphous grain-boundary phase and formation of refractory secondary phases.",

keywords = "High-temperature strength, LuO, Oxidation, ScO, α-Sialon",

author = "Chunfeng Liu and Feng Ye and Limeng Liu and Yu Zhou",

year = "2009",

month = jun,

doi = "10.1016/j.scriptamat.2009.01.018",

language = "英语",

volume = "60",

pages = "929--932",

journal = "Scripta Materialia",

issn = "1359-6462",

publisher = "Acta Materialia Inc",

number = "11",

}

TY - JOUR

T1 - High-temperature strength and oxidation behavior of Sc3+/Lu3+ co-doped α-sialon

AU - Liu, Chunfeng

AU - Ye, Feng

AU - Liu, Limeng

AU - Zhou, Yu

PY - 2009/6

Y1 - 2009/6

N2 - The high-temperature strength and oxidation behavior of hot-pressed ScLu-α-sialon were investigated. The flexural strength at 1400 °C could reach 611 MPa, which was ∼94% of the room-temperature strength. A thin, dense oxidation scale was formed after exposure to air at 1300 °C. It exhibits parabolic oxidation behavior, with a maximum specific weight gain of 0.686 mg cm-2 and a rate constant of 4.21 × 10-6 mg2 cm-4 s-1 at 1300 °C. The excellent performance is attributed to the elimination of amorphous grain-boundary phase and formation of refractory secondary phases.

AB - The high-temperature strength and oxidation behavior of hot-pressed ScLu-α-sialon were investigated. The flexural strength at 1400 °C could reach 611 MPa, which was ∼94% of the room-temperature strength. A thin, dense oxidation scale was formed after exposure to air at 1300 °C. It exhibits parabolic oxidation behavior, with a maximum specific weight gain of 0.686 mg cm-2 and a rate constant of 4.21 × 10-6 mg2 cm-4 s-1 at 1300 °C. The excellent performance is attributed to the elimination of amorphous grain-boundary phase and formation of refractory secondary phases.

KW - High-temperature strength

KW - LuO

KW - Oxidation

KW - ScO

KW - α-Sialon

UR - https://www.scopus.com/pages/publications/62849116718

U2 - 10.1016/j.scriptamat.2009.01.018

DO - 10.1016/j.scriptamat.2009.01.018

M3 - 文章

AN - SCOPUS:62849116718

SN - 1359-6462

VL - 60

SP - 929

EP - 932

JO - Scripta Materialia

JF - Scripta Materialia

IS - 11

ER -

High-temperature strength and oxidation behavior of Sc³⁺/Lu³⁺ co-doped α-sialon

Abstract

Keywords

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