日本金属学会誌
Online ISSN : 1880-6880
Print ISSN : 0021-4876
ISSN-L : 0021-4876
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電界放出型走査電子顕微鏡およびX線光電子分光法によるりん酸鉄化成処理皮膜の微細構造解析
宮澤 悠介中島 圭一板本 航輝福島 颯太安藤 美来内山 瑛二宮 翔西堀 麻衣子福士 英一吉岡 信明田口 秀之
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2023 年 87 巻 8 号 p. 235-241

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The microstructure and chemical composition of iron phosphate conversion coatings were investigated by surface/cross-sectional observation using FE-SEM/STEM and chemical state analysis using XPS. As a result, it was suggested that the conversion reaction progressed while the surface oxide on the base material remained, and the fine particles of coatings components were deposited and agglomerated to cover the material surface. The upper layer of coatings was mainly composed of iron phosphate, while the interface between the coatings and base material was deposited iron oxide. The proportion of iron phosphate and iron oxide was almost equal at the initial stage, and the amount of iron phosphate increased as the coating thickness.

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