Compositional and Structural Analysis of Iron Phosphate Conversion Coatings by Soft X-ray Emission Spectroscopy

被引：0

作者：

Itamoto, Koki ^{[1
,5
]}

Ninomiya, Kakeru ^{[1
,2
,3
]}

Fukushi, Hidekazu ^{[4
]}

Taguchi, Hideyuki ^{[4
]}

Nakajima, Keiichi ^{[4
]}

Uchiyama, Ei ^{[4
]}

Miyazawa, Yusuke ^{[4
]}

Ando, Miku ^{[4
]}

Fukushima, Sota ^{[4
]}

Nishibori, Maiko ^{[1
,2
,3
]}

机构：

[1] Tohoku Univ, Grad Sch Environm Sci, Sendai 9808572, Japan

[2] Tohoku Univ, Int Ctr Synchrotron Radiat Innovat Smart, Sendai 9808572, Japan

[3] Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Sendai 9800812, Japan

[4] Nihon Parkerizing Co Ltd, Hiratsuka 2540012, Japan

[5] Tohoku Univ, Sendai, Japan

来源：

MATERIALS TRANSACTIONS | 2024年 / 65卷 / 12期

关键词：

iron phosphate conversion coating; X-ray absorption spectroscopy; X-ray emission spectroscopy; state-separated analytical method; compositional analysis; SCATTERING; WATER;

D O I：

10.2320/matertrans.MT-M2024092

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Iron phosphate conversion coatings that precipitate on steel prevent corrosion and improve paint adhesion. Although this coating is composed of FePO4 and iron oxides, separating the chemical species of the constituent elements using conventional analytical methods is challenging; hence, the detailed structure and deposition mechanism of the coating are not understood. This study used X-ray absorption and emission spectroscopy to analyze the coatings. The results showed that the main component of the coatings was FePO4, mixed with FeO for short treatment times and y-Fe 2 O 3 for long treatment times. These results suggested a new reaction pathway between FeO and FePO4, generated by eluted Fe2+ ions within solutions. [doi:10.2320/matertrans.MT-M2024092]

引用

页码：1560 / 1565

页数：6

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