Oxidation of Ca-α-SiAlON powders prepared by combustion synthesis

Jinfu Li; Zhongmin Li; Enhui Wang; Zhanjun Wang; Xiaowei Yin; Zuotai Zhang

doi:10.3390/ma8115394

Oxidation of Ca-α-SiAlON powders prepared by combustion synthesis

Jinfu Li, Zhongmin Li, Enhui Wang, Zhanjun Wang, Xiaowei Yin, Zuotai Zhang

School of Materials Sience and Engineering

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

3 Scopus citations

Abstract

The oxidation of Ca-α-SiAlON synthesized by the combustion synthesis (CS) method with different additives was investigated in air atmosphere using thermogravimetric (TG) analysis in a temperature range from 1453 K to 1653 K. The experimental results indicated that oxidation was controlled by mixed chemical and diffusion steps. The oxidation products by XRD analysis were composed of SiO₂ and CaAl₂Si₂O₈ at low oxidation temperature, whereas the SiO₂-Al₂O₃-CaO ternary glassy phase was formed at elevated temperature. The deviation of oxidation resistance from each sample may be due to the morphological difference brought about by different additive additions. This study reveals the effects of additives on the oxidation resistance of synthesized Ca-α-SiAlON powders.

Original language	English
Pages (from-to)	7549-7562
Number of pages	14
Journal	Materials
Volume	8
Issue number	11
DOIs	https://doi.org/10.3390/ma8115394
State	Published - 2015

Keywords

Additives
Ca-α-SiAlON
Combustion synthesis
Oxidation

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title = "Oxidation of Ca-α-SiAlON powders prepared by combustion synthesis",

abstract = "The oxidation of Ca-α-SiAlON synthesized by the combustion synthesis (CS) method with different additives was investigated in air atmosphere using thermogravimetric (TG) analysis in a temperature range from 1453 K to 1653 K. The experimental results indicated that oxidation was controlled by mixed chemical and diffusion steps. The oxidation products by XRD analysis were composed of SiO2 and CaAl2Si2O8 at low oxidation temperature, whereas the SiO2-Al2O3-CaO ternary glassy phase was formed at elevated temperature. The deviation of oxidation resistance from each sample may be due to the morphological difference brought about by different additive additions. This study reveals the effects of additives on the oxidation resistance of synthesized Ca-α-SiAlON powders.",

keywords = "Additives, Ca-α-SiAlON, Combustion synthesis, Oxidation",

author = "Jinfu Li and Zhongmin Li and Enhui Wang and Zhanjun Wang and Xiaowei Yin and Zuotai Zhang",

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doi = "10.3390/ma8115394",

language = "英语",

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journal = "Materials",

issn = "1996-1944",

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TY - JOUR

T1 - Oxidation of Ca-α-SiAlON powders prepared by combustion synthesis

AU - Li, Jinfu

AU - Li, Zhongmin

AU - Wang, Enhui

AU - Wang, Zhanjun

AU - Yin, Xiaowei

AU - Zhang, Zuotai

PY - 2015

Y1 - 2015

N2 - The oxidation of Ca-α-SiAlON synthesized by the combustion synthesis (CS) method with different additives was investigated in air atmosphere using thermogravimetric (TG) analysis in a temperature range from 1453 K to 1653 K. The experimental results indicated that oxidation was controlled by mixed chemical and diffusion steps. The oxidation products by XRD analysis were composed of SiO2 and CaAl2Si2O8 at low oxidation temperature, whereas the SiO2-Al2O3-CaO ternary glassy phase was formed at elevated temperature. The deviation of oxidation resistance from each sample may be due to the morphological difference brought about by different additive additions. This study reveals the effects of additives on the oxidation resistance of synthesized Ca-α-SiAlON powders.

AB - The oxidation of Ca-α-SiAlON synthesized by the combustion synthesis (CS) method with different additives was investigated in air atmosphere using thermogravimetric (TG) analysis in a temperature range from 1453 K to 1653 K. The experimental results indicated that oxidation was controlled by mixed chemical and diffusion steps. The oxidation products by XRD analysis were composed of SiO2 and CaAl2Si2O8 at low oxidation temperature, whereas the SiO2-Al2O3-CaO ternary glassy phase was formed at elevated temperature. The deviation of oxidation resistance from each sample may be due to the morphological difference brought about by different additive additions. This study reveals the effects of additives on the oxidation resistance of synthesized Ca-α-SiAlON powders.

KW - Additives

KW - Ca-α-SiAlON

KW - Combustion synthesis

KW - Oxidation

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U2 - 10.3390/ma8115394

DO - 10.3390/ma8115394

M3 - 文章

AN - SCOPUS:84949651252

SN - 1996-1944

VL - 8

SP - 7549

EP - 7562

JO - Materials

JF - Materials

IS - 11

ER -

Oxidation of Ca-α-SiAlON powders prepared by combustion synthesis

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