Effect of oxygen adsorption on surface tension of liquid copper: Experiments and thermodynamic models

Majid Abbasi; Joonho Lee; Minsoo Shin; Yunkyum Kim; Youngjo Kang

doi:10.1016/j.apsusc.2014.05.153

Effect of oxygen adsorption on surface tension of liquid copper: Experiments and thermodynamic models

Majid Abbasi, Joonho Lee, Minsoo Shin, Yunkyum Kim, Youngjo Kang

Department of Materials Science and Engineering

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

12 Citations (Scopus)

Abstract

The effect of oxygen adsorption on surface tension of liquid copper at two different temperatures (1390 and 1440 K) has been investigated. A combination of specially designed crucibles, He-Ne laser, and high-resolution photography in a highly controlled gas atmosphere was used for accurate measurements. Experimental data exhibits decreasing surface tension with increasing oxygen partial pressure. Discussion on the adsorption behavior of oxygen is presented based on thermodynamic models by assuming a hypothetical binary system of Cu-"Cu₂O", in which "Cu₂O" is considered as an associate molecule. Ideal adsorption model which assumes insignificant interactions between Cu and Cu₂O on the surface exhibits the best fit to the experimental results.

Original language	English
Pages (from-to)	116-122
Number of pages	7
Journal	Applied Surface Science
Volume	313
DOIs	https://doi.org/10.1016/j.apsusc.2014.05.153
Publication status	Published - 2014 Sept 15

Keywords

Brazing
Copper
Oxygen adsorption
Surface tension
Thermodynamics

ASJC Scopus subject areas

Chemistry(all)
Condensed Matter Physics
Physics and Astronomy(all)
Surfaces and Interfaces
Surfaces, Coatings and Films

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10.1016/j.apsusc.2014.05.153

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title = "Effect of oxygen adsorption on surface tension of liquid copper: Experiments and thermodynamic models",

abstract = "The effect of oxygen adsorption on surface tension of liquid copper at two different temperatures (1390 and 1440 K) has been investigated. A combination of specially designed crucibles, He-Ne laser, and high-resolution photography in a highly controlled gas atmosphere was used for accurate measurements. Experimental data exhibits decreasing surface tension with increasing oxygen partial pressure. Discussion on the adsorption behavior of oxygen is presented based on thermodynamic models by assuming a hypothetical binary system of Cu-{"}Cu2O{"}, in which {"}Cu2O{"} is considered as an associate molecule. Ideal adsorption model which assumes insignificant interactions between Cu and Cu2O on the surface exhibits the best fit to the experimental results.",

keywords = "Brazing, Copper, Oxygen adsorption, Surface tension, Thermodynamics",

author = "Majid Abbasi and Joonho Lee and Minsoo Shin and Yunkyum Kim and Youngjo Kang",

note = "Funding Information: The current research was supported by the Space Core Technology Development Program (NRF-2012M1A3A3A02033446) and the Converging Research Center Program (2013K000309) thorough the Korea. MA was supported by a Korea University Grant. We are thankful to Prof. M. Watanabe, Gakushuin University, Prof. S. Ozawa, Chiba Institute of Technology, and Dr. J. Brillo, DLR for their useful discussions.",

year = "2014",

month = sep,

day = "15",

doi = "10.1016/j.apsusc.2014.05.153",

language = "English",

volume = "313",

pages = "116--122",

journal = "Applied Surface Science",

issn = "0169-4332",

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TY - JOUR

T1 - Effect of oxygen adsorption on surface tension of liquid copper

T2 - Experiments and thermodynamic models

AU - Abbasi, Majid

AU - Lee, Joonho

AU - Shin, Minsoo

AU - Kim, Yunkyum

AU - Kang, Youngjo

N1 - Funding Information: The current research was supported by the Space Core Technology Development Program (NRF-2012M1A3A3A02033446) and the Converging Research Center Program (2013K000309) thorough the Korea. MA was supported by a Korea University Grant. We are thankful to Prof. M. Watanabe, Gakushuin University, Prof. S. Ozawa, Chiba Institute of Technology, and Dr. J. Brillo, DLR for their useful discussions.

PY - 2014/9/15

Y1 - 2014/9/15

N2 - The effect of oxygen adsorption on surface tension of liquid copper at two different temperatures (1390 and 1440 K) has been investigated. A combination of specially designed crucibles, He-Ne laser, and high-resolution photography in a highly controlled gas atmosphere was used for accurate measurements. Experimental data exhibits decreasing surface tension with increasing oxygen partial pressure. Discussion on the adsorption behavior of oxygen is presented based on thermodynamic models by assuming a hypothetical binary system of Cu-"Cu2O", in which "Cu2O" is considered as an associate molecule. Ideal adsorption model which assumes insignificant interactions between Cu and Cu2O on the surface exhibits the best fit to the experimental results.

AB - The effect of oxygen adsorption on surface tension of liquid copper at two different temperatures (1390 and 1440 K) has been investigated. A combination of specially designed crucibles, He-Ne laser, and high-resolution photography in a highly controlled gas atmosphere was used for accurate measurements. Experimental data exhibits decreasing surface tension with increasing oxygen partial pressure. Discussion on the adsorption behavior of oxygen is presented based on thermodynamic models by assuming a hypothetical binary system of Cu-"Cu2O", in which "Cu2O" is considered as an associate molecule. Ideal adsorption model which assumes insignificant interactions between Cu and Cu2O on the surface exhibits the best fit to the experimental results.

KW - Brazing

KW - Copper

KW - Oxygen adsorption

KW - Surface tension

KW - Thermodynamics

UR - http://www.scopus.com/inward/record.url?scp=84904789347&partnerID=8YFLogxK

U2 - 10.1016/j.apsusc.2014.05.153

DO - 10.1016/j.apsusc.2014.05.153

M3 - Article

AN - SCOPUS:84904789347

SN - 0169-4332

VL - 313

SP - 116

EP - 122

JO - Applied Surface Science

JF - Applied Surface Science

ER -

Effect of oxygen adsorption on surface tension of liquid copper: Experiments and thermodynamic models

Abstract

Keywords

ASJC Scopus subject areas

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