Oxidation behavior of polymer derived SiCO powders

Yiguang Wang; Houbu Li; Litong Zhang; Laifei Cheng

doi:10.1016/j.ceramint.2008.05.006

Oxidation behavior of polymer derived SiCO powders

Yiguang Wang^*, Houbu Li, Litong Zhang, Laifei Cheng

^*Corresponding author for this work

Northwestern Polytechnical University Xian

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

23 Citations (Scopus)

Abstract

Polymer derived SiCO ceramic powders were fabricated by pyrolysis of polycarbosilane precursor. The oxidation behaviors of these powders were studied by thermogravimetric analysis at the temperature range of 900-1400 °C. The oxidation parabolic constants at different temperatures were calculated. From these parabolic constants, the apparent activation energies for oxidation could also be obtained. These results indicated that SiCO powders have a close oxidation rate to that of pure silicon carbide. The crystallinity of SiCO ceramics and silica scales has little effect on the oxidation rates. The results also elucidated that the oxidation mechanism for amorphous and crystalline silica is the same.

Original language	English
Pages (from-to)	1129-1132
Number of pages	4
Journal	Ceramics International
Volume	35
Issue number	3
DOIs	https://doi.org/10.1016/j.ceramint.2008.05.006
Publication status	Published - Apr 2009
Externally published	Yes

Keywords

A: Precursors: organic
C: Corrosion
D: SiC
Oxidation mechanism

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10.1016/j.ceramint.2008.05.006

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title = "Oxidation behavior of polymer derived SiCO powders",

abstract = "Polymer derived SiCO ceramic powders were fabricated by pyrolysis of polycarbosilane precursor. The oxidation behaviors of these powders were studied by thermogravimetric analysis at the temperature range of 900-1400 °C. The oxidation parabolic constants at different temperatures were calculated. From these parabolic constants, the apparent activation energies for oxidation could also be obtained. These results indicated that SiCO powders have a close oxidation rate to that of pure silicon carbide. The crystallinity of SiCO ceramics and silica scales has little effect on the oxidation rates. The results also elucidated that the oxidation mechanism for amorphous and crystalline silica is the same.",

keywords = "A: Precursors: organic, C: Corrosion, D: SiC, Oxidation mechanism",

author = "Yiguang Wang and Houbu Li and Litong Zhang and Laifei Cheng",

year = "2009",

month = apr,

doi = "10.1016/j.ceramint.2008.05.006",

language = "English",

volume = "35",

pages = "1129--1132",

journal = "Ceramics International",

issn = "0272-8842",

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TY - JOUR

T1 - Oxidation behavior of polymer derived SiCO powders

AU - Wang, Yiguang

AU - Li, Houbu

AU - Zhang, Litong

AU - Cheng, Laifei

PY - 2009/4

Y1 - 2009/4

N2 - Polymer derived SiCO ceramic powders were fabricated by pyrolysis of polycarbosilane precursor. The oxidation behaviors of these powders were studied by thermogravimetric analysis at the temperature range of 900-1400 °C. The oxidation parabolic constants at different temperatures were calculated. From these parabolic constants, the apparent activation energies for oxidation could also be obtained. These results indicated that SiCO powders have a close oxidation rate to that of pure silicon carbide. The crystallinity of SiCO ceramics and silica scales has little effect on the oxidation rates. The results also elucidated that the oxidation mechanism for amorphous and crystalline silica is the same.

AB - Polymer derived SiCO ceramic powders were fabricated by pyrolysis of polycarbosilane precursor. The oxidation behaviors of these powders were studied by thermogravimetric analysis at the temperature range of 900-1400 °C. The oxidation parabolic constants at different temperatures were calculated. From these parabolic constants, the apparent activation energies for oxidation could also be obtained. These results indicated that SiCO powders have a close oxidation rate to that of pure silicon carbide. The crystallinity of SiCO ceramics and silica scales has little effect on the oxidation rates. The results also elucidated that the oxidation mechanism for amorphous and crystalline silica is the same.

KW - A: Precursors: organic

KW - C: Corrosion

KW - D: SiC

KW - Oxidation mechanism

UR - http://www.scopus.com/inward/record.url?scp=59349114301&partnerID=8YFLogxK

U2 - 10.1016/j.ceramint.2008.05.006

DO - 10.1016/j.ceramint.2008.05.006

M3 - Article

AN - SCOPUS:59349114301

SN - 0272-8842

VL - 35

SP - 1129

EP - 1132

JO - Ceramics International

JF - Ceramics International

IS - 3

ER -

Oxidation behavior of polymer derived SiCO powders

Abstract

Keywords

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