An ultra-high temperature Mo-Si-B based coating for oxidation protection of NbSS/Nb5Si3 composites

Linfen Su; Otto Lu-Steffes; Hu Zhang; John H. Perepezko

doi:10.1016/j.apsusc.2015.02.061

An ultra-high temperature Mo-Si-B based coating for oxidation protection of Nb_SS/Nb₅Si₃ composites

Linfen Su
, Otto Lu-Steffes^*
, Hu Zhang
, John H. Perepezko

^*Corresponding author for this work

School of Materials Science and Engineering

University of Wisconsin-Madison
Beihang University

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

100 Scopus citations

Abstract

A Mo-Si-B based coating was prepared on an Nb_SS/Nb₅Si₃ composite by a two-step process consisting of the initial deposition of Mo followed by pack cementation co-deposition of Si and B. After a conditioning treatment, an aluminoborosilica layer fully covered the sample. Following oxidation at 1300 °C for 24 h, the coated sample demonstrated a weight loss of about 0.55 mg/cm² and the uncoated sample exhibited catastrophic oxidation with a weight gain of 87.6 mg/cm². These results demonstrate that the Mo-Si-B based coating can enable the use of the Nb_SS/Nb₅Si₃ composites at temperature up to 1300 °C in an oxidizing environment.

Original language	English
Pages (from-to)	38-44
Number of pages	7
Journal	Applied Surface Science
Volume	337
DOIs	https://doi.org/10.1016/j.apsusc.2015.02.061
State	Published - 15 May 2015

Keywords

EPMA
Intermetallics
Metal coatings
Oxidation
SEM

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10.1016/j.apsusc.2015.02.061

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title = "An ultra-high temperature Mo-Si-B based coating for oxidation protection of NbSS/Nb5Si3 composites",

abstract = "A Mo-Si-B based coating was prepared on an NbSS/Nb5Si3 composite by a two-step process consisting of the initial deposition of Mo followed by pack cementation co-deposition of Si and B. After a conditioning treatment, an aluminoborosilica layer fully covered the sample. Following oxidation at 1300 °C for 24 h, the coated sample demonstrated a weight loss of about 0.55 mg/cm2 and the uncoated sample exhibited catastrophic oxidation with a weight gain of 87.6 mg/cm2. These results demonstrate that the Mo-Si-B based coating can enable the use of the NbSS/Nb5Si3 composites at temperature up to 1300 °C in an oxidizing environment.",

keywords = "EPMA, Intermetallics, Metal coatings, Oxidation, SEM",

author = "Linfen Su and Otto Lu-Steffes and Hu Zhang and Perepezko, \{John H.\}",

year = "2015",

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doi = "10.1016/j.apsusc.2015.02.061",

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journal = "Applied Surface Science",

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T1 - An ultra-high temperature Mo-Si-B based coating for oxidation protection of NbSS/Nb5Si3 composites

AU - Su, Linfen

AU - Lu-Steffes, Otto

AU - Zhang, Hu

AU - Perepezko, John H.

PY - 2015/5/15

Y1 - 2015/5/15

N2 - A Mo-Si-B based coating was prepared on an NbSS/Nb5Si3 composite by a two-step process consisting of the initial deposition of Mo followed by pack cementation co-deposition of Si and B. After a conditioning treatment, an aluminoborosilica layer fully covered the sample. Following oxidation at 1300 °C for 24 h, the coated sample demonstrated a weight loss of about 0.55 mg/cm2 and the uncoated sample exhibited catastrophic oxidation with a weight gain of 87.6 mg/cm2. These results demonstrate that the Mo-Si-B based coating can enable the use of the NbSS/Nb5Si3 composites at temperature up to 1300 °C in an oxidizing environment.

AB - A Mo-Si-B based coating was prepared on an NbSS/Nb5Si3 composite by a two-step process consisting of the initial deposition of Mo followed by pack cementation co-deposition of Si and B. After a conditioning treatment, an aluminoborosilica layer fully covered the sample. Following oxidation at 1300 °C for 24 h, the coated sample demonstrated a weight loss of about 0.55 mg/cm2 and the uncoated sample exhibited catastrophic oxidation with a weight gain of 87.6 mg/cm2. These results demonstrate that the Mo-Si-B based coating can enable the use of the NbSS/Nb5Si3 composites at temperature up to 1300 °C in an oxidizing environment.

KW - EPMA

KW - Intermetallics

KW - Metal coatings

KW - Oxidation

KW - SEM

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U2 - 10.1016/j.apsusc.2015.02.061

DO - 10.1016/j.apsusc.2015.02.061

M3 - 文章

AN - SCOPUS:84925363208

SN - 0169-4332

VL - 337

SP - 38

EP - 44

JO - Applied Surface Science

JF - Applied Surface Science

ER -

An ultra-high temperature Mo-Si-B based coating for oxidation protection of Nb_SS/Nb₅Si₃ composites

Abstract

Keywords

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