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Research Activities of Nanodimensional Standards Using Atomic Force Microscopes,Transmission Electron Microscope,and Scanning Electron Microscope at the National Metrology Institute of Japan

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Nanomanufacturing and Metrology 2022年第2期5卷 83-90页

作者： Ichiko Misumi Ryosuke Kizu Hiroshi Itoh Kazuhiro Kumagai keita Kobayashi Tomoo Sigehuzi National Institute of Advanced Industrial Science and Technology AIST Tsukuba Central 51-1-1 HigashiIbaraki305-8565TsukubaJapan

With the progress in nanotechnology,the importance of nanodimensional standards is *** nanodimensional standards requires multiple types of high-precision microscopy *** National Metrology Institute of Japan(NMIJ),one of the research domains in the National Institute of Advanced Industrial Science and Technology(AIST),is developing nanodimensional standards using atomic force,transmission electron,and scanning electron *** current status of nanodimensional standards in NMIJ is introduced herein.

关键词： Nanodimensional standards Calibration Uncertainty AFM TEM sem

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Corrosion Study and Passive Film Characterization of 11% Cr FIM and 15% Cr ODS Steels

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Journal of Civil Engineering and Architecture 2013年第8期7卷 940-955页

作者： Masatoshi Sakairi Sublime Ningshen keita Suzuki Shigeharu Ukai Faculty of Engineering Hokkaido University Hokkaido 060-8628 Japan Corrosion Science and Technology Group Indira Gandhi Centre for Atomic Research Kalpakkam 603 102 India

An ODS （oxide dispersion strengthened） steels are one of the most notable structural materials being developed for future high-temperature energy production technologies, and several studies have been devoted to the development of ODS materials for such applications. However, only little paper focuses on corrosion behavior of F/M （ferritic martensictic） and ODS steels. The corrosion behavior of 11% Cr F/M steel and 15% Cr ODS steel were evaluated using electrochemical methods in borate buffer and 1 kmol m＂3 HNO3 with or without NaCI and also in boiling 60% nitric acid. The corrosion resistance results clearly indicated the influences of steel alloys composition and chloride ions. The XPS （X-ray photo-electron spectroscopy） results of the pre-passivated surface revealed that the oxide formed were composed predominantly of Fe203 along with Cr203, and Y203 layers in ODS steel. The corrosion rate measured in boiling nitric acid for 48 h for both the steels shows high corrosion rate in boiling condition. The sem.（scanning electron microscopy） observation of the pit morphology after corrosion tests appears with shallow pit in both steel surfaces The corrosion degradation behavior in relation to the composition of the passive oxide film in different electrolytic solutions is discussed in this paper.

关键词： F/M steel ODS steel corrosion passive film XPS analysis.

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