Characterization of the protective surface films formed on molten magnesium in air/HFC-134a atmospheres

Hukui Chen; Jianrui Liu; Weidong Huang

doi:10.1016/j.matchar.2006.03.012

Characterization of the protective surface films formed on molten magnesium in air/HFC-134a atmospheres

Hukui Chen
, Jianrui Liu
, Weidong Huang

School of Materials Sience and Engineering

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

17 Scopus citations

Abstract

The surface films formed on molten magnesium in an air/HFC-134a gas mixture at 700 °C were characterized by scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD) and Auger electron spectroscopy (AES). The results showed that there was a protective film on molten magnesium surface, which can prevent molten magnesium from oxidation and ignition. The surface film contained primarily four elements: magnesium, fluorine, oxygen and carbon, and was composed of MgF₂, MgO and C. The film properties depended on the HFC-134a concentration in the gaseous mixture and exposure time. The thickness of the film formed after exposure to air containing 0.5% HFC-134a for 10 min was about 1-2 μm.

Original language	English
Pages (from-to)	51-58
Number of pages	8
Journal	Materials Characterization
Volume	58
Issue number	1
DOIs	https://doi.org/10.1016/j.matchar.2006.03.012
State	Published - Jan 2007

Keywords

HFC-134a
Magnesium melt
Microstructure
Surface film

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10.1016/j.matchar.2006.03.012

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title = "Characterization of the protective surface films formed on molten magnesium in air/HFC-134a atmospheres",

abstract = "The surface films formed on molten magnesium in an air/HFC-134a gas mixture at 700 °C were characterized by scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD) and Auger electron spectroscopy (AES). The results showed that there was a protective film on molten magnesium surface, which can prevent molten magnesium from oxidation and ignition. The surface film contained primarily four elements: magnesium, fluorine, oxygen and carbon, and was composed of MgF2, MgO and C. The film properties depended on the HFC-134a concentration in the gaseous mixture and exposure time. The thickness of the film formed after exposure to air containing 0.5\% HFC-134a for 10 min was about 1-2 μm.",

keywords = "HFC-134a, Magnesium melt, Microstructure, Surface film",

author = "Hukui Chen and Jianrui Liu and Weidong Huang",

year = "2007",

month = jan,

doi = "10.1016/j.matchar.2006.03.012",

language = "英语",

volume = "58",

pages = "51--58",

journal = "Materials Characterization",

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T1 - Characterization of the protective surface films formed on molten magnesium in air/HFC-134a atmospheres

AU - Chen, Hukui

AU - Liu, Jianrui

AU - Huang, Weidong

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Y1 - 2007/1

N2 - The surface films formed on molten magnesium in an air/HFC-134a gas mixture at 700 °C were characterized by scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD) and Auger electron spectroscopy (AES). The results showed that there was a protective film on molten magnesium surface, which can prevent molten magnesium from oxidation and ignition. The surface film contained primarily four elements: magnesium, fluorine, oxygen and carbon, and was composed of MgF2, MgO and C. The film properties depended on the HFC-134a concentration in the gaseous mixture and exposure time. The thickness of the film formed after exposure to air containing 0.5% HFC-134a for 10 min was about 1-2 μm.

AB - The surface films formed on molten magnesium in an air/HFC-134a gas mixture at 700 °C were characterized by scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD) and Auger electron spectroscopy (AES). The results showed that there was a protective film on molten magnesium surface, which can prevent molten magnesium from oxidation and ignition. The surface film contained primarily four elements: magnesium, fluorine, oxygen and carbon, and was composed of MgF2, MgO and C. The film properties depended on the HFC-134a concentration in the gaseous mixture and exposure time. The thickness of the film formed after exposure to air containing 0.5% HFC-134a for 10 min was about 1-2 μm.

KW - HFC-134a

KW - Magnesium melt

KW - Microstructure

KW - Surface film

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DO - 10.1016/j.matchar.2006.03.012

M3 - 文章

AN - SCOPUS:33846151363

SN - 1044-5803

VL - 58

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JO - Materials Characterization

JF - Materials Characterization

IS - 1

ER -

Characterization of the protective surface films formed on molten magnesium in air/HFC-134a atmospheres

Abstract

Keywords

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