Air-oxidation behavior of a [(Co 50Cr 15Mo 14C 15B 6)97.5Er2.5]93Fe7 bulk-metallic glass at 873 K to 973 K (60°C to 70°C)

Wu Kai; Yuan Hao Wu; Wei Shen Chen; Rong Tan Huang; Haoling Jia; Peter K. Liaw; Tao Zhang

doi:10.1007/s11661-012-1243-0

Air-oxidation behavior of a [(Co ₅₀Cr ₁₅Mo ₁₄C ₁₅B ₆)97.5Er2.5]93Fe7 bulk-metallic glass at 873 K to 973 K (60°C to 70°C)

Wu Kai^*
, Yuan Hao Wu
, Wei Shen Chen
, Rong Tan Huang
, Haoling Jia
, Peter K. Liaw
, Tao Zhang

^*Corresponding author for this work

School of Materials Science and Engineering

National Taiwan Ocean University
University of Tennessee

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

4 Scopus citations

Abstract

The oxidation behavior of a [(Co50Cr15Mo14C15B6)97.5Er2.5]93Fe7 bulk-metallic glass (Co7- BMG) was studied over the temperature range of 873 K to 973 K (60°C to 70°C) in dry air. The oxidation kinetics of the Co7-BMG generally followed the parabolic-rate law, as its oxidation rates increased with temperature. The scaling rate of the Co7-BMG was significantly lower than that of pure Co, which indicates a better oxidation resistance for the amorphous alloy. The scales formed on the Co7-BMG consisted mostly of CoMoO4 and Co3O4, as well as minor amounts of CoO, Cr2O3, and uncorroded Co3B. The formation of CoMoO4 and Cr2O3 is responsible for the lower oxidation rates of the glassy alloy with respect to those of pure Co. In addition, the presence of Co3B further indicated that the crystallization of the amorphous substrate during the oxidation was taken place.

Original language	English
Pages (from-to)	2721-2728
Number of pages	8
Journal	Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
Volume	43
Issue number	8
DOIs	https://doi.org/10.1007/s11661-012-1243-0
State	Published - Aug 2012

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title = "Air-oxidation behavior of a [(Co 50Cr 15Mo 14C 15B 6)97.5Er2.5]93Fe7 bulk-metallic glass at 873 K to 973 K (60°C to 70°C)",

abstract = "The oxidation behavior of a [(Co50Cr15Mo14C15B6)97.5Er2.5]93Fe7 bulk-metallic glass (Co7- BMG) was studied over the temperature range of 873 K to 973 K (60°C to 70°C) in dry air. The oxidation kinetics of the Co7-BMG generally followed the parabolic-rate law, as its oxidation rates increased with temperature. The scaling rate of the Co7-BMG was significantly lower than that of pure Co, which indicates a better oxidation resistance for the amorphous alloy. The scales formed on the Co7-BMG consisted mostly of CoMoO4 and Co3O4, as well as minor amounts of CoO, Cr2O3, and uncorroded Co3B. The formation of CoMoO4 and Cr2O3 is responsible for the lower oxidation rates of the glassy alloy with respect to those of pure Co. In addition, the presence of Co3B further indicated that the crystallization of the amorphous substrate during the oxidation was taken place.",

author = "Wu Kai and Wu, \{Yuan Hao\} and \{Shen Chen\}, Wei and Huang, \{Rong Tan\} and Haoling Jia and Liaw, \{Peter K.\} and Tao Zhang",

year = "2012",

month = aug,

doi = "10.1007/s11661-012-1243-0",

language = "英语",

volume = "43",

pages = "2721--2728",

journal = "Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science",

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TY - JOUR

T1 - Air-oxidation behavior of a [(Co 50Cr 15Mo 14C 15B 6)97.5Er2.5]93Fe7 bulk-metallic glass at 873 K to 973 K (60°C to 70°C)

AU - Kai, Wu

AU - Wu, Yuan Hao

AU - Shen Chen, Wei

AU - Huang, Rong Tan

AU - Jia, Haoling

AU - Liaw, Peter K.

AU - Zhang, Tao

PY - 2012/8

Y1 - 2012/8

N2 - The oxidation behavior of a [(Co50Cr15Mo14C15B6)97.5Er2.5]93Fe7 bulk-metallic glass (Co7- BMG) was studied over the temperature range of 873 K to 973 K (60°C to 70°C) in dry air. The oxidation kinetics of the Co7-BMG generally followed the parabolic-rate law, as its oxidation rates increased with temperature. The scaling rate of the Co7-BMG was significantly lower than that of pure Co, which indicates a better oxidation resistance for the amorphous alloy. The scales formed on the Co7-BMG consisted mostly of CoMoO4 and Co3O4, as well as minor amounts of CoO, Cr2O3, and uncorroded Co3B. The formation of CoMoO4 and Cr2O3 is responsible for the lower oxidation rates of the glassy alloy with respect to those of pure Co. In addition, the presence of Co3B further indicated that the crystallization of the amorphous substrate during the oxidation was taken place.

AB - The oxidation behavior of a [(Co50Cr15Mo14C15B6)97.5Er2.5]93Fe7 bulk-metallic glass (Co7- BMG) was studied over the temperature range of 873 K to 973 K (60°C to 70°C) in dry air. The oxidation kinetics of the Co7-BMG generally followed the parabolic-rate law, as its oxidation rates increased with temperature. The scaling rate of the Co7-BMG was significantly lower than that of pure Co, which indicates a better oxidation resistance for the amorphous alloy. The scales formed on the Co7-BMG consisted mostly of CoMoO4 and Co3O4, as well as minor amounts of CoO, Cr2O3, and uncorroded Co3B. The formation of CoMoO4 and Cr2O3 is responsible for the lower oxidation rates of the glassy alloy with respect to those of pure Co. In addition, the presence of Co3B further indicated that the crystallization of the amorphous substrate during the oxidation was taken place.

UR - https://www.scopus.com/pages/publications/84864623869

U2 - 10.1007/s11661-012-1243-0

DO - 10.1007/s11661-012-1243-0

M3 - 文章

AN - SCOPUS:84864623869

SN - 1073-5623

VL - 43

SP - 2721

EP - 2728

JO - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science

JF - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science

IS - 8

ER -

Air-oxidation behavior of a [(Co ₅₀Cr ₁₅Mo ₁₄C ₁₅B ₆)97.5Er2.5]93Fe7 bulk-metallic glass at 873 K to 973 K (60°C to 70°C)

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