Surface Characteristic and Corrosion Phenomena of X-ray Irradiated Pure Mg

Funatsu, Keisuke; Suzuki, Masashi; Takahashi, Makoto; Imai, Hisashi; Umeda, Junko; Akamatsu, Fumiteru; Kondoh, Katsuyoshi

doi:https://doi.org/10.18910/24865

Surface Characteristic and Corrosion Phenomena of X-ray Irradiated Pure Mg

Funatsu, Keisuke; Suzuki, Masashi; Takahashi, Makoto et al.

Transactions of JWRI, 2012, 41(2), 13-18

Number of Access:710（2025-08-13 22:42 Counts）

Identifier to cite or link to this item: https://doi.org/10.18910/24865

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Title	Surface Characteristic and Corrosion Phenomena of X-ray Irradiated Pure Mg
Creator	CreatorName Funatsu, Keisuke
	CreatorName Suzuki, Masashi
	NRID 1000010294133 1000010294133 researchmap permalink AB_MTakahashi AB_MTakahashi Scopus Author ID 55701142600 55701142600 CreatorName Takahashi, Makoto
	NRID 1000030452379 1000030452379 CreatorName Imai, Hisashi
	NRID 1000050345162 1000050345162 researchmap permalink umeda umeda Scopus Author ID 23478776500 23478776500 ORCID 0000-0001-8678-9708 0000-0001-8678-9708 CreatorName Umeda, Junko
	NRID 1000010231812 1000010231812 researchmap permalink read0013928 read0013928 Scopus Author ID 56071092200 56071092200 CreatorName Akamatsu, Fumiteru
	NRID 1000050345138 1000050345138 researchmap permalink kondoh kondoh Scopus Author ID 9942942300 9942942300 CreatorName Kondoh, Katsuyoshi
Subject	Magnesium
	Corrosion phenomenon
	X-ray irradiation
	Dense MgO film
Abstract	Magnesium (Mg) and its alloys are highly corrodible due to their low standard electrode potential (SEP). The conventional methods to improve corrosion resistance of Mg alloys are an anodic oxide film formation processing and chemical conversion treatment. However, these processes consume high energy. Besides, Mg products treated with these methods are hard to be recycled due to their large content of impurities. In this study, a unique Mg oxide (MgO) film, formed by a radical reaction between the pure Mg surface and radical species by X-ray irradiation, was fabricated on the Mg sample surface, and its corrosion phenomenon was evaluated. Pure Mg surface was modified by X-ray irradiation under atmospheric condition. XPS analysis indicated MgO film was formed on the surface of pure Mg after X-ray irradiation. Cross-sectional observation by TEM showed the MgO film was dense compared to the naturally formed oxide films with porous structures. The thickness of its surface modification film was increased with increase in the X-ray irradiation time. After salt water immersion test, the corrosion resistance of X-ray irradiated pure Mg for 24 hours was about four times higher than that of as-polished pure Mg sample. These results suggested X-ray irradiation of the Mg surface in a humid atmosphere was remarkably effective to improve the corrosion resistance of pure Mg by formation of the dense MgO films.
Publisher	大阪大学接合科学研究所
	オオサカダイガクセツゴウカガクケンキュウジョ
	Joining and Welding Research Institute, Osaka University
Source Title	Transactions of JWRI
Volume (Issue)	41(2)
Page	13-18
Date of Issued	2012-12
Language	English
Handle URL	https://hdl.handle.net/11094/24865
DOI	https://doi.org/10.18910/24865
PISSN	03874508
NCID	AA00867058
Access Rights	open access
oaire:version	Version of Record
Category	紀要論文 Departmental Bulletin Paper
Category	Transactions of JWRI / Vol.41 No.2 (2012-12)

Resource Type	departmental bulletin paper
Local Type	Departmental Bulletin Paper
DCMI Type	Text
DCTERMS.bibliographicCitation	Transactions of JWRI. 2012, 41(2), p. 13-18
DC.title	Surface Characteristic and Corrosion Phenomena of X-ray Irradiated Pure Mg
DC.creator	Funatsu, Keisuke
	Suzuki, Masashi
	Takahashi, Makoto
	Imai, Hisashi
	Umeda, Junko
	Akamatsu, Fumiteru
	Kondoh, Katsuyoshi
DC.publisher	大阪大学接合科学研究所
	オオサカダイガクセツゴウカガクケンキュウジョ
	Joining and Welding Research Institute, Osaka University
DC.language' scheme='DCTERMS.RFC1766	English
DC.type' scheme='DCTERMS.DCMIType	Text
DCTERMS.issued' scheme='DCTERMS.W3CDTF	2012-12
DC.subject	Magnesium
	Corrosion phenomenon
	X-ray irradiation
	Dense MgO film
DCTERMS.abstract	Magnesium (Mg) and its alloys are highly corrodible due to their low standard electrode potential (SEP). The conventional methods to improve corrosion resistance of Mg alloys are an anodic oxide film formation processing and chemical conversion treatment. However, these processes consume high energy. Besides, Mg products treated with these methods are hard to be recycled due to their large content of impurities. In this study, a unique Mg oxide (MgO) film, formed by a radical reaction between the pure Mg surface and radical species by X-ray irradiation, was fabricated on the Mg sample surface, and its corrosion phenomenon was evaluated. Pure Mg surface was modified by X-ray irradiation under atmospheric condition. XPS analysis indicated MgO film was formed on the surface of pure Mg after X-ray irradiation. Cross-sectional observation by TEM showed the MgO film was dense compared to the naturally formed oxide films with porous structures. The thickness of its surface modification film was increased with increase in the X-ray irradiation time. After salt water immersion test, the corrosion resistance of X-ray irradiated pure Mg for 24 hours was about four times higher than that of as-polished pure Mg sample. These results suggested X-ray irradiation of the Mg surface in a humid atmosphere was remarkably effective to improve the corrosion resistance of pure Mg by formation of the dense MgO films.
DC.identifier	10.18910/24865
DC.format	24865
citation_title	Surface Characteristic and Corrosion Phenomena of X-ray Irradiated Pure Mg
citation_author	Funatsu, Keisuke
	Suzuki, Masashi
	Takahashi, Makoto
	Imai, Hisashi
	Umeda, Junko
	Akamatsu, Fumiteru
	Kondoh, Katsuyoshi
citation_publisher	大阪大学接合科学研究所
citation_language	English
citation_date	2012-12
citation_journal_title	Transactions of JWRI
citation_volume	41
citation_issue	2
citation_firstpage	13
citation_lastpage	18
citation_public_url	https://hdl.handle.net/11094/24865
citation_doi_detail	10.18910/24865
citation_doi	https://doi.org/10.18910/24865

Surface Characteristic and Corrosion Phenomena of X-ray Irradiated Pure Mg

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