Chemical stability between NiCr2O4 material and molten calcium-magnesium-alumino-silicate (CMAS) at high temperature

Zhuang Ma; Xing Li; Ling Liu; Yanbo Liu

doi:10.3390/ma10121397

Chemical stability between NiCr₂O₄ material and molten calcium-magnesium-alumino-silicate (CMAS) at high temperature

Zhuang Ma, Xing Li, Ling Liu^*, Yanbo Liu

^*Corresponding author for this work

School of Material Science and Engineering

Beijing Institute of Technology

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

6 Citations (Scopus)

Abstract

NiCr₂O₄ as a potential protection for thermal barrier coatings (TBCs) against the attack of molten calcium-magnesium-alumino-silicate (CMAS) was studied by a CMAS-contacting experiment. Atmospheric plasma sprayed coatings and sintered bulk materials were fabricated, covered with CMAS deposits, and exposed to 1200 °C for 24 h. Nano-sized CMAS-NiCr₂O₄ mixed powder was manufactured by ball milling and then conducted heat treatment under the same condition. The results show that no reacting product was found at the border between molten CMAS and NiCr₂O₄ and no element transportation occurred. It can be inferred that NiCr₂O₄ has outstanding chemical stability with the molten CMAS.

Original language	English
Article number	1397
Pages (from-to)	1-8
Number of pages	8
Journal	Materials
Volume	10
Issue number	12
DOIs	https://doi.org/10.3390/ma10121397
Publication status	Published - 6 Dec 2017

Keywords

CMAS attack
Chemical stability
Impermeable protective coating

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title = "Chemical stability between NiCr2O4 material and molten calcium-magnesium-alumino-silicate (CMAS) at high temperature",

abstract = "NiCr2O4 as a potential protection for thermal barrier coatings (TBCs) against the attack of molten calcium-magnesium-alumino-silicate (CMAS) was studied by a CMAS-contacting experiment. Atmospheric plasma sprayed coatings and sintered bulk materials were fabricated, covered with CMAS deposits, and exposed to 1200 °C for 24 h. Nano-sized CMAS-NiCr2O4 mixed powder was manufactured by ball milling and then conducted heat treatment under the same condition. The results show that no reacting product was found at the border between molten CMAS and NiCr2O4 and no element transportation occurred. It can be inferred that NiCr2O4 has outstanding chemical stability with the molten CMAS.",

keywords = "CMAS attack, Chemical stability, Impermeable protective coating",

author = "Zhuang Ma and Xing Li and Ling Liu and Yanbo Liu",

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AU - Ma, Zhuang

AU - Li, Xing

AU - Liu, Ling

AU - Liu, Yanbo

PY - 2017/12/6

Y1 - 2017/12/6

N2 - NiCr2O4 as a potential protection for thermal barrier coatings (TBCs) against the attack of molten calcium-magnesium-alumino-silicate (CMAS) was studied by a CMAS-contacting experiment. Atmospheric plasma sprayed coatings and sintered bulk materials were fabricated, covered with CMAS deposits, and exposed to 1200 °C for 24 h. Nano-sized CMAS-NiCr2O4 mixed powder was manufactured by ball milling and then conducted heat treatment under the same condition. The results show that no reacting product was found at the border between molten CMAS and NiCr2O4 and no element transportation occurred. It can be inferred that NiCr2O4 has outstanding chemical stability with the molten CMAS.

AB - NiCr2O4 as a potential protection for thermal barrier coatings (TBCs) against the attack of molten calcium-magnesium-alumino-silicate (CMAS) was studied by a CMAS-contacting experiment. Atmospheric plasma sprayed coatings and sintered bulk materials were fabricated, covered with CMAS deposits, and exposed to 1200 °C for 24 h. Nano-sized CMAS-NiCr2O4 mixed powder was manufactured by ball milling and then conducted heat treatment under the same condition. The results show that no reacting product was found at the border between molten CMAS and NiCr2O4 and no element transportation occurred. It can be inferred that NiCr2O4 has outstanding chemical stability with the molten CMAS.

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Chemical stability between NiCr₂O₄ material and molten calcium-magnesium-alumino-silicate (CMAS) at high temperature

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Keywords

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