成果報告書詳細
管理番号20110000001096
タイトル*平成22年度中間年報 水素先端科学基礎研究事業
公開日2011/8/25
報告書年度2010 - 2010
委託先名独立行政法人産業技術総合研究所 国立大学法人九州大学 独立行政法人物質・材料研究機構 国立大学法人佐賀大学 国立大学法人長崎大学 学校法人上智学院 NOK株式会社
プロジェクト番号P06026
部署名新エネルギー部
和文要約和文要約等以下本編抜粋:1)産業界との連携 これまでに得られた研究成果を生かし、水素関連材料・機器の実用化に結びつけるために、22年度公募企業をはじめとする関係企業と連携して研究開発を行った。 ・水素物性データベースを地域水素供給インフラ技術・社会実証事業(2011~2015)における水素ステーションに使用するため打ち合わせを開始。 ・水素エネルギーシステム・インフラに使用される金属材料、部品・部材の調査・損傷解析を関連企業、団体と共同で進め、水素構造材料データベースの拡充、規制見直しのための試験準備を行った。 ・水素機器に使用されるゴム材料の化学構造評価を行い、本事業参画企業と素材開発を進めた。0リングの実機評価、溝設計の影響評価を行い、水素機器メーカー、自動車メーカーと連携が進展。
英文要約Title:“Fundamental Research Project on Advanced Hydrogen Science”(FY2009-2010)FY2010 Annual Report Hydrogen energy is expected to be a next generation clean energy that produces very little environmental pollution and will greatly reduce CO2 emissions. However, there are still many issues that must be overcome before commercializing hydrogen energy technologies such as fuel cells. Therefore, we are working to scientifically clarify the phenomena related to hydrogen and othera materials, and establish technology that enables safe and economical use of hydrogen energy. In FY2010, 5 teams worked as follows: 1. Hydrogen Thermophysical Properties Team Development of experimental apparatus and the measurements of some thermophysical properties have been done. A prototype of hydrogen thermophysical property database was developed. A web page was newly opened to provide the calculation services in our database-style based on currently available correlations.2. Hydrogen Fatigue and Fracture TeamThe results obtained in this financial year are summarized as follows: (1)Silicon sputtering method in the semiconductor field was applied to secondary ion mass spectrometry (SIMS) of hydrogen in metallic materials. Background hydrogen was substantially reduced.(2)Tensile properties of SUS304, SUS316 and SUS316L austenitic stainless steels were obtained in 70MPa ~ 115MPa hydrogen gas at -40℃, 25℃ and 80℃.-40℃ and 80℃ are the minimum and maximum operating temperatures of FCVs. (3)Hydrogen structural materials database has been developed. The construction of hydrogen solubility and diffusivity database of SCM435 low alloy steel was started. (4)Fracture toughness of low alloy steels was markedly decreased with the presence of hydrogen. However, the decrease of fracture toughness of Cr-Mo steel was negligible at Vickers hardness lower than 300. 3. Hydrogen Polymer Team The relationship between internal fracture due to high-pressure hydrogen decompression and microstructure of ethylene-propylene-diene-methylene linkage rubber was investigated by atomic force microscopy. Hydrogen gas solubility of carbon black-filled EPDM rubbers was evaluated. Hydrogen gas permeability of several sealing rubbers under high-pressure hydrogen gas by using a high-pressure durability tester; then, their hydrogen gas permeability and diffusivity were analyzed in terms of ambient temperature and hydrogen pressure. 4. Hydrogen Tribology Team The project this year concentrated on collecting tribology data for candidate materials including steels, alloys, polymers, coatings and elastomers under a variety of sliding conditions, including gas pressure, temperature and a small amount of water and oxygen in hydrogen gas, and on exploring chemical processes occurring at tribo-interface in order to understand the tribological behaviors. 5. Hydrogen Simulation Team We have estimated effects of flux specified boundary conditions for the hydrogen diffusion problem, which are believed to be effective for real estimation of hydrogen distribution in materials. FEM analysis using tetrahedral elements has also been applied to stress analyses of high pressure hydrogen tanks. We have evaluated the properties of the Al/Si interface and Al/Mg2Si interface using the density functional theory. We have performed dislocation mechanics calculations for bcc Fe using the relationship between dislocation velocity and applied stress obtained by atomistic simulations.
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