Nondestructive Measurement of Hexavalent Chromium in Chromate Conversion Coatings Using X-ray Absorption Near Edge Structure

Kenji NOMURA; Naoki AWAJI

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Nondestructive Measurement of Hexavalent Chromium in Chromate Conversion Coatings Using X-ray Absorption Near Edge Structure

机译：使用近边缘结构的X射线吸收法无损测量铬酸盐转化膜中的六价铬

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We developed a nondestructive evaluation technique of hexavalent chromium (Cr~(6+)) in chromate conversion coatings on the basis of a pre-edge peak that appeared in an X-ray absorption near-edge structure (XANES) measured at the SPring-8 synchrotron radiation facility BL16B2. By applying this technique, a percentage of the hexavalent chromium in the actual chromate conversion coating has been evaluated. Furthermore, to determine the depth distribution of hexavalent chromium in the coating, grazing incidence X-ray fluorescence (GIXRF) measurement has been performed. From the data analysis, we found that hexavalent chromium concentration is decreased around the surface region of the coating.

机译：我们开发了一种无损评估技术，用于对铬酸盐转化膜中的六价铬（Cr〜（6+））进行评估，该技术基于SPring- 8个同步辐射装置BL16B2。通过应用该技术，已经评估了实际铬酸盐转化膜中六价铬的百分比。此外，为了确定涂层中六价铬的深度分布，已经进行了掠入射X射线荧光（GIXRF）测量。通过数据分析，我们发现涂层表面区域周围的六价铬浓度降低了。

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来源
《Japanese Journal of Applied Physics. Part 2, Letters & Express Letters》 |2006年第11期|p.L304-L306|共3页
作者
Kenji NOMURA; Naoki AWAJI;
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作者单位

Fujitsu Laboratories, Ltd., 10-1 Morinosato-wakamiya, Atsugi, Kanagawa 243-0197, Japan;

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原文格式 PDF
正文语种 eng
中图分类应用物理学;
关键词
hexavalent chromium; chromate conversion coating; XANES; SPring-8; BL16B2; pre-edge peak; GIXRF; RoHS; depth distribution; incident angle dependence;

机译：六价铬铬酸盐转化膜XANES SPring-8 BL16B2前缘峰GIXRF RoHS深度分布入射角依赖性;

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专利

1. Application of X-ray Absorption Fine Structure Method for the Quantitative Analysis of Hexavalent Chromium in Chromate Conversion Coating and Plastic [J] . Mitsuhiro Oki, Sayaka Morimoto, Miho Muramatsu, Applied Spectroscopy: Society for Applied Spectroscopy . 2014,第4期

机译：X射线吸收精细结构方法在铬酸盐转化膜和塑料中六价铬定量分析中的应用
2. X-ray Fluorescence Analysis of Hexavalent Chromium Using K(beta) Satellite Peak Observed as Counterpart of X-ray Absorption Near-Edge Structure Pre-Edge Peak [J] . Isao Tsuyumoto, Yoshihiro Maruyama Analytical chemistry . 2011,第19期

机译：使用Kβ卫星峰进行六价铬的X射线荧光分析，该峰被视为X射线吸收近边缘结构前边缘峰的对应物
3. Simultaneous Removal of Greases and Hexavalent Chromium from Electroplating and Chromate Conversion Coating Waste Solution by Electrocoagulation [J] . El-Ashtoukhy E-S Z., Abdel-Aziz M. H., Sedahmed G. H. Water, Air, and Soil Pollution . 2018,第10期

机译：电凝同时去除电镀和铬酸盐转化膜废液中的油脂和六价铬
4. Using Fluorescence XANES Measurement to Correct the Content of Hexavalent Chromium in Chromate Conversion Coatings Determined by Diphenyl Carbazide Color Test [C] . Junichi Nishino, Toshikazu Sekikawa, Haruka Otani, International Conference on Synchrotron Radiation Instrumentation . 2007

机译：使用荧光XANES测量以校正通过二苯基碳脱苯基咔唑色试验确定的铬酸盐转化涂层中六价铬含量
5. Copper structure and L-edge x-ray absorption in copper/X multilayers (X = chromium, molybdenum, tungsten, tantalum, rhenium). [D] . Bello, Abner F. 1999

机译：铜/ X多层膜（X =铬，钼，钨，钽，rh）中的铜结构和L边缘X射线吸收。
6. X-ray structure analysis of a metalloprotein with enhanced active-site resolution using in situ x-ray absorption near edge structure spectroscopy [O] . Alessandro Arcovito, Maurizio Benfatto, Michele Cianci, 2007

机译：使用原位X射线吸收近边缘结构光谱法对具有增强的活性位点分辨率的金属蛋白进行X射线结构分析
7. Storage and Release of Soluble Hexavalent Chromium from Chromate Conversion Coatings on Al Alloys: Kinetics of Release [O] . E. Akiyama, A. J. Markworth, J. K. McCoy, 2003

机译：从Al合金上铬酸盐转化涂层的可溶性六价铬的储存和释放：释放动力学
8. Photoconductivity measurements of x-ray absorption fine structures in liquids in the soft x-ray region: Si and Cl K-edge [R] . Sham, T K, Xiong, J Z, Feng, X H, 1992

机译：软X射线区域中液体中X射线吸收精细结构的光电导率测量：si和Cl K边缘

Nondestructive Measurement of Hexavalent Chromium in Chromate Conversion Coatings Using X-ray Absorption Near Edge Structure

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