Effects of Si addition on the oxidation behavior of a Cu-Zr-based bulk metallic alloy

W. Kai; P. C. Kao; P. C. Lin; I. F. Ren; J. S C Jang

doi:10.1016/j.intermet.2010.03.005

Effects of Si addition on the oxidation behavior of a Cu-Zr-based bulk metallic alloy

W. Kai^*, P. C. Kao, P. C. Lin, I. F. Ren, J. S C Jang

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

15 Citations (Scopus)

Abstract

The effect of Si addition on the oxidation of (Cu ₄₃Zr ₄₃Al ₇Ag ₇) _99.5Si _0.5 bulk metallic glass (CZ43S-BMG) was investigated over the temperature range of 375-500 °C in dry air. The results generally showed that the oxidation rates of the CZ43S-BMG followed a multi-stage parabolic-rate law, and the oxidation rate constants (k _p values) fluctuated with increasing temperature. It was found that the k _p values of the CZ43S-BMG were slightly slower than those of the Si-free glassy alloy (Cu ₄₃Zr ₄₃Al ₇Ag ₇, named as CZ43-BMG). The scales formed on the CZ43S-BMG strongly depend on temperature, consisting of 3 different modifications of ZrO ₂ and CuO, and minor amounts of Cu ₂O (formed at T ≥ 425 °C) and Al ₂O ₃ (only detected at 500 °C). In addition, the glassy substrate remained amorphous nature at T ≤ 400 °C, while it transferred to the crystalline phases of Cu ₁₀Zr ₇, ZrAl, and ZrSi ₂ after the oxidation at higher temperatures. © 2010 Elsevier Ltd. All rights reserved.

Original language	English
Pages (from-to)	1994-1999
Journal	Intermetallics
Volume	18
Issue number	10
DOIs	https://doi.org/10.1016/j.intermet.2010.03.005
Publication status	Published - Oct 2010
Externally published	Yes

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Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

Research Keywords

B. Glasses, metallic
B. Oxidation

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title = "Effects of Si addition on the oxidation behavior of a Cu-Zr-based bulk metallic alloy",

abstract = "The effect of Si addition on the oxidation of (Cu 43Zr 43Al 7Ag 7) 99.5Si 0.5 bulk metallic glass (CZ43S-BMG) was investigated over the temperature range of 375-500 °C in dry air. The results generally showed that the oxidation rates of the CZ43S-BMG followed a multi-stage parabolic-rate law, and the oxidation rate constants (k p values) fluctuated with increasing temperature. It was found that the k p values of the CZ43S-BMG were slightly slower than those of the Si-free glassy alloy (Cu 43Zr 43Al 7Ag 7, named as CZ43-BMG). The scales formed on the CZ43S-BMG strongly depend on temperature, consisting of 3 different modifications of ZrO 2 and CuO, and minor amounts of Cu 2O (formed at T ≥ 425 °C) and Al 2O 3 (only detected at 500 °C). In addition, the glassy substrate remained amorphous nature at T ≤ 400 °C, while it transferred to the crystalline phases of Cu 10Zr 7, ZrAl, and ZrSi 2 after the oxidation at higher temperatures. {\textcopyright} 2010 Elsevier Ltd. All rights reserved.",

keywords = "B. Glasses, metallic, B. Oxidation",

author = "W. Kai and Kao, {P. C.} and Lin, {P. C.} and Ren, {I. F.} and Jang, {J. S C}",

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TY - JOUR

T1 - Effects of Si addition on the oxidation behavior of a Cu-Zr-based bulk metallic alloy

AU - Kai, W.

AU - Kao, P. C.

AU - Lin, P. C.

AU - Ren, I. F.

AU - Jang, J. S C

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

PY - 2010/10

Y1 - 2010/10

N2 - The effect of Si addition on the oxidation of (Cu 43Zr 43Al 7Ag 7) 99.5Si 0.5 bulk metallic glass (CZ43S-BMG) was investigated over the temperature range of 375-500 °C in dry air. The results generally showed that the oxidation rates of the CZ43S-BMG followed a multi-stage parabolic-rate law, and the oxidation rate constants (k p values) fluctuated with increasing temperature. It was found that the k p values of the CZ43S-BMG were slightly slower than those of the Si-free glassy alloy (Cu 43Zr 43Al 7Ag 7, named as CZ43-BMG). The scales formed on the CZ43S-BMG strongly depend on temperature, consisting of 3 different modifications of ZrO 2 and CuO, and minor amounts of Cu 2O (formed at T ≥ 425 °C) and Al 2O 3 (only detected at 500 °C). In addition, the glassy substrate remained amorphous nature at T ≤ 400 °C, while it transferred to the crystalline phases of Cu 10Zr 7, ZrAl, and ZrSi 2 after the oxidation at higher temperatures. © 2010 Elsevier Ltd. All rights reserved.

AB - The effect of Si addition on the oxidation of (Cu 43Zr 43Al 7Ag 7) 99.5Si 0.5 bulk metallic glass (CZ43S-BMG) was investigated over the temperature range of 375-500 °C in dry air. The results generally showed that the oxidation rates of the CZ43S-BMG followed a multi-stage parabolic-rate law, and the oxidation rate constants (k p values) fluctuated with increasing temperature. It was found that the k p values of the CZ43S-BMG were slightly slower than those of the Si-free glassy alloy (Cu 43Zr 43Al 7Ag 7, named as CZ43-BMG). The scales formed on the CZ43S-BMG strongly depend on temperature, consisting of 3 different modifications of ZrO 2 and CuO, and minor amounts of Cu 2O (formed at T ≥ 425 °C) and Al 2O 3 (only detected at 500 °C). In addition, the glassy substrate remained amorphous nature at T ≤ 400 °C, while it transferred to the crystalline phases of Cu 10Zr 7, ZrAl, and ZrSi 2 after the oxidation at higher temperatures. © 2010 Elsevier Ltd. All rights reserved.

KW - B. Glasses, metallic

KW - B. Oxidation

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DO - 10.1016/j.intermet.2010.03.005

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VL - 18

SP - 1994

EP - 1999

JO - Intermetallics

JF - Intermetallics

IS - 10

ER -

Effects of Si addition on the oxidation behavior of a Cu-Zr-based bulk metallic alloy

Abstract

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