High-temperature stability and oxidation behavior of SiOC/HfO2 ceramic nanocomposite in air

Jia Sun; Tao Li; Andreas Reitz; Qiangang Fu; Ralf Riedel; Zhaoju Yu

doi:10.1016/j.corsci.2020.108866

High-temperature stability and oxidation behavior of SiOC/HfO₂ ceramic nanocomposite in air

Jia Sun, Tao Li, Andreas Reitz, Qiangang Fu, Ralf Riedel, Zhaoju Yu

School of Materials Sience and Engineering

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

25 Scopus citations

Abstract

High temperature stability (1100−1500 °C) and oxidation behavior at 1500 °C of the SiOC/HfO₂ ceramic nanocomposite were investigated in air. Consumption of free carbon dominated thermal stabilities of the bulk at below 1200 °C. Whereas, the continuous cristobalite scale, rather than HfSiO₄, was responsible for the improved oxidation resistance at exceeding 1200 °C. At 1500 °C, HfSiO₄, with maximum 30 vol. % concentration for duration of ∼ 15 h, suffered ruptured spherical-bubbles by volatilized species and did not consolidate into a completely protective scale. Thus, the bulk exhibited limited resistance to oxidation at 1500 °C for long-term applications.

Original language	English
Article number	108866
Journal	Corrosion Science
Volume	175
DOIs	https://doi.org/10.1016/j.corsci.2020.108866
State	Published - Oct 2020

Keywords

Ceramic nanocomposite
Oxidation resistance
Single source precursor
Spark plasma sintering
Thermal stability

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10.1016/j.corsci.2020.108866

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title = "High-temperature stability and oxidation behavior of SiOC/HfO2 ceramic nanocomposite in air",

abstract = "High temperature stability (1100−1500 °C) and oxidation behavior at 1500 °C of the SiOC/HfO2 ceramic nanocomposite were investigated in air. Consumption of free carbon dominated thermal stabilities of the bulk at below 1200 °C. Whereas, the continuous cristobalite scale, rather than HfSiO4, was responsible for the improved oxidation resistance at exceeding 1200 °C. At 1500 °C, HfSiO4, with maximum 30 vol. % concentration for duration of ∼ 15 h, suffered ruptured spherical-bubbles by volatilized species and did not consolidate into a completely protective scale. Thus, the bulk exhibited limited resistance to oxidation at 1500 °C for long-term applications.",

keywords = "Ceramic nanocomposite, Oxidation resistance, Single source precursor, Spark plasma sintering, Thermal stability",

author = "Jia Sun and Tao Li and Andreas Reitz and Qiangang Fu and Ralf Riedel and Zhaoju Yu",

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year = "2020",

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doi = "10.1016/j.corsci.2020.108866",

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TY - JOUR

T1 - High-temperature stability and oxidation behavior of SiOC/HfO2 ceramic nanocomposite in air

AU - Sun, Jia

AU - Li, Tao

AU - Reitz, Andreas

AU - Fu, Qiangang

AU - Riedel, Ralf

AU - Yu, Zhaoju

PY - 2020/10

Y1 - 2020/10

N2 - High temperature stability (1100−1500 °C) and oxidation behavior at 1500 °C of the SiOC/HfO2 ceramic nanocomposite were investigated in air. Consumption of free carbon dominated thermal stabilities of the bulk at below 1200 °C. Whereas, the continuous cristobalite scale, rather than HfSiO4, was responsible for the improved oxidation resistance at exceeding 1200 °C. At 1500 °C, HfSiO4, with maximum 30 vol. % concentration for duration of ∼ 15 h, suffered ruptured spherical-bubbles by volatilized species and did not consolidate into a completely protective scale. Thus, the bulk exhibited limited resistance to oxidation at 1500 °C for long-term applications.

AB - High temperature stability (1100−1500 °C) and oxidation behavior at 1500 °C of the SiOC/HfO2 ceramic nanocomposite were investigated in air. Consumption of free carbon dominated thermal stabilities of the bulk at below 1200 °C. Whereas, the continuous cristobalite scale, rather than HfSiO4, was responsible for the improved oxidation resistance at exceeding 1200 °C. At 1500 °C, HfSiO4, with maximum 30 vol. % concentration for duration of ∼ 15 h, suffered ruptured spherical-bubbles by volatilized species and did not consolidate into a completely protective scale. Thus, the bulk exhibited limited resistance to oxidation at 1500 °C for long-term applications.

KW - Ceramic nanocomposite

KW - Oxidation resistance

KW - Single source precursor

KW - Spark plasma sintering

KW - Thermal stability

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DO - 10.1016/j.corsci.2020.108866

M3 - 文章

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SN - 0010-938X

VL - 175

JO - Corrosion Science

JF - Corrosion Science

M1 - 108866

ER -

High-temperature stability and oxidation behavior of SiOC/HfO₂ ceramic nanocomposite in air

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