Improvement in the oxidation resistance of Nb-Ti-Si-Cr-Al-Hf alloys containing alloyed Ge and B

Linfen Su; Lina Jia; Junfei Weng; Zhen Hong; Chungen Zhou; Hu Zhang

doi:10.1016/j.corsci.2014.08.006

Improvement in the oxidation resistance of Nb-Ti-Si-Cr-Al-Hf alloys containing alloyed Ge and B

Linfen Su
, Lina Jia
, Junfei Weng
, Zhen Hong
, Chungen Zhou
, Hu Zhang^*

^*Corresponding author for this work

School of Materials Science and Engineering

Beihang University

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

85 Scopus citations

Abstract

The oxidation behaviour for Nb-Si based alloys was performed in air at 1200°C and 1250°C. The weight gains of Nb-24Ti-15Si-13Cr-2Al-2Hf (at.%) alloy and Nb-24Ti-15Si-13Cr-2Al-2Hf-4B-5Ge (at.%) alloy after oxidation at 1250°C for 100h were 156.7mg/cm² and 32.5mg/cm², respectively. The oxide scale of the Nb-24Ti-15Si-13Cr-2Al-2Hf (at.%) alloy was porous and loose, while that of the Nb-24Ti-15Si-13Cr-2Al-2Hf-4B-5Ge (at.%) alloy was dense and protective. The presence of alloyed B and Ge improved the protective SiO₂ phase grown during high temperature oxidation, leading to the formation of a continuous and dense oxide scale.

Original language	English
Pages (from-to)	460-465
Number of pages	6
Journal	Corrosion Science
Volume	88
DOIs	https://doi.org/10.1016/j.corsci.2014.08.006
State	Published - Nov 2014

Keywords

A. Intermetallics
B. EPMA
B. SEM
C. Oxidation

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10.1016/j.corsci.2014.08.006

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@article{101157b56ce245289e6ca58f60c3baf1,

title = "Improvement in the oxidation resistance of Nb-Ti-Si-Cr-Al-Hf alloys containing alloyed Ge and B",

abstract = "The oxidation behaviour for Nb-Si based alloys was performed in air at 1200°C and 1250°C. The weight gains of Nb-24Ti-15Si-13Cr-2Al-2Hf (at.\%) alloy and Nb-24Ti-15Si-13Cr-2Al-2Hf-4B-5Ge (at.\%) alloy after oxidation at 1250°C for 100h were 156.7mg/cm2 and 32.5mg/cm2, respectively. The oxide scale of the Nb-24Ti-15Si-13Cr-2Al-2Hf (at.\%) alloy was porous and loose, while that of the Nb-24Ti-15Si-13Cr-2Al-2Hf-4B-5Ge (at.\%) alloy was dense and protective. The presence of alloyed B and Ge improved the protective SiO2 phase grown during high temperature oxidation, leading to the formation of a continuous and dense oxide scale.",

keywords = "A. Intermetallics, B. EPMA, B. SEM, C. Oxidation",

author = "Linfen Su and Lina Jia and Junfei Weng and Zhen Hong and Chungen Zhou and Hu Zhang",

year = "2014",

month = nov,

doi = "10.1016/j.corsci.2014.08.006",

language = "英语",

volume = "88",

pages = "460--465",

journal = "Corrosion Science",

issn = "0010-938X",

publisher = "Elsevier Ltd",

}

TY - JOUR

T1 - Improvement in the oxidation resistance of Nb-Ti-Si-Cr-Al-Hf alloys containing alloyed Ge and B

AU - Su, Linfen

AU - Jia, Lina

AU - Weng, Junfei

AU - Hong, Zhen

AU - Zhou, Chungen

AU - Zhang, Hu

PY - 2014/11

Y1 - 2014/11

N2 - The oxidation behaviour for Nb-Si based alloys was performed in air at 1200°C and 1250°C. The weight gains of Nb-24Ti-15Si-13Cr-2Al-2Hf (at.%) alloy and Nb-24Ti-15Si-13Cr-2Al-2Hf-4B-5Ge (at.%) alloy after oxidation at 1250°C for 100h were 156.7mg/cm2 and 32.5mg/cm2, respectively. The oxide scale of the Nb-24Ti-15Si-13Cr-2Al-2Hf (at.%) alloy was porous and loose, while that of the Nb-24Ti-15Si-13Cr-2Al-2Hf-4B-5Ge (at.%) alloy was dense and protective. The presence of alloyed B and Ge improved the protective SiO2 phase grown during high temperature oxidation, leading to the formation of a continuous and dense oxide scale.

AB - The oxidation behaviour for Nb-Si based alloys was performed in air at 1200°C and 1250°C. The weight gains of Nb-24Ti-15Si-13Cr-2Al-2Hf (at.%) alloy and Nb-24Ti-15Si-13Cr-2Al-2Hf-4B-5Ge (at.%) alloy after oxidation at 1250°C for 100h were 156.7mg/cm2 and 32.5mg/cm2, respectively. The oxide scale of the Nb-24Ti-15Si-13Cr-2Al-2Hf (at.%) alloy was porous and loose, while that of the Nb-24Ti-15Si-13Cr-2Al-2Hf-4B-5Ge (at.%) alloy was dense and protective. The presence of alloyed B and Ge improved the protective SiO2 phase grown during high temperature oxidation, leading to the formation of a continuous and dense oxide scale.

KW - A. Intermetallics

KW - B. EPMA

KW - B. SEM

KW - C. Oxidation

UR - https://www.scopus.com/pages/publications/84906783823

U2 - 10.1016/j.corsci.2014.08.006

DO - 10.1016/j.corsci.2014.08.006

M3 - 文章

AN - SCOPUS:84906783823

SN - 0010-938X

VL - 88

SP - 460

EP - 465

JO - Corrosion Science

JF - Corrosion Science

ER -

Improvement in the oxidation resistance of Nb-Ti-Si-Cr-Al-Hf alloys containing alloyed Ge and B

Abstract

Keywords

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