A comparative study of two kinds of Y and Al modified silicide coatings on an Nb-Ti-Si based alloy prepared by pack cementation technique

Ping Zhang; Xiping Guo

doi:10.1016/j.corsci.2011.08.040

A comparative study of two kinds of Y and Al modified silicide coatings on an Nb-Ti-Si based alloy prepared by pack cementation technique

Ping Zhang, Xiping Guo

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

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

60 Scopus citations

Abstract

Two kinds of Y and Al modified silicide coatings on an Nb-Ti-Si based alloy were prepared by pack cementation technique. The microstructure and oxidation behavior of both coatings were studied. Both coatings had a multiple layer structure, but the outer layers were composed of either Y- and Al-doped (Nb,X)Si₂ or Y-doped (Nb,X)₃Si₅Al₂+(Nb,X)Si₂ phases, respectively. The former coating could protect the substrate alloy from oxidation at 1250°C for 100h, but the latter coating could only endure for less than 20h. The scale formation mechanisms and microstructural changes of both coatings upon oxidation have been illustrated.

Original language	English
Pages (from-to)	4291-4299
Number of pages	9
Journal	Corrosion Science
Volume	53
Issue number	12
DOIs	https://doi.org/10.1016/j.corsci.2011.08.040
State	Published - Dec 2011

Keywords

A. Intermetallic
A. Metal coatings
C. Oxidation

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10.1016/j.corsci.2011.08.040

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title = "A comparative study of two kinds of Y and Al modified silicide coatings on an Nb-Ti-Si based alloy prepared by pack cementation technique",

abstract = "Two kinds of Y and Al modified silicide coatings on an Nb-Ti-Si based alloy were prepared by pack cementation technique. The microstructure and oxidation behavior of both coatings were studied. Both coatings had a multiple layer structure, but the outer layers were composed of either Y- and Al-doped (Nb,X)Si2 or Y-doped (Nb,X)3Si5Al2+(Nb,X)Si2 phases, respectively. The former coating could protect the substrate alloy from oxidation at 1250°C for 100h, but the latter coating could only endure for less than 20h. The scale formation mechanisms and microstructural changes of both coatings upon oxidation have been illustrated.",

keywords = "A. Intermetallic, A. Metal coatings, C. Oxidation",

author = "Ping Zhang and Xiping Guo",

year = "2011",

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doi = "10.1016/j.corsci.2011.08.040",

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T1 - A comparative study of two kinds of Y and Al modified silicide coatings on an Nb-Ti-Si based alloy prepared by pack cementation technique

AU - Zhang, Ping

AU - Guo, Xiping

PY - 2011/12

Y1 - 2011/12

N2 - Two kinds of Y and Al modified silicide coatings on an Nb-Ti-Si based alloy were prepared by pack cementation technique. The microstructure and oxidation behavior of both coatings were studied. Both coatings had a multiple layer structure, but the outer layers were composed of either Y- and Al-doped (Nb,X)Si2 or Y-doped (Nb,X)3Si5Al2+(Nb,X)Si2 phases, respectively. The former coating could protect the substrate alloy from oxidation at 1250°C for 100h, but the latter coating could only endure for less than 20h. The scale formation mechanisms and microstructural changes of both coatings upon oxidation have been illustrated.

AB - Two kinds of Y and Al modified silicide coatings on an Nb-Ti-Si based alloy were prepared by pack cementation technique. The microstructure and oxidation behavior of both coatings were studied. Both coatings had a multiple layer structure, but the outer layers were composed of either Y- and Al-doped (Nb,X)Si2 or Y-doped (Nb,X)3Si5Al2+(Nb,X)Si2 phases, respectively. The former coating could protect the substrate alloy from oxidation at 1250°C for 100h, but the latter coating could only endure for less than 20h. The scale formation mechanisms and microstructural changes of both coatings upon oxidation have been illustrated.

KW - A. Intermetallic

KW - A. Metal coatings

KW - C. Oxidation

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U2 - 10.1016/j.corsci.2011.08.040

DO - 10.1016/j.corsci.2011.08.040

M3 - 文章

AN - SCOPUS:80053455384

SN - 0010-938X

VL - 53

SP - 4291

EP - 4299

JO - Corrosion Science

JF - Corrosion Science

IS - 12

ER -

A comparative study of two kinds of Y and Al modified silicide coatings on an Nb-Ti-Si based alloy prepared by pack cementation technique

Abstract

Keywords

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