成果報告書詳細
管理番号20120000000389
タイトル*平成23年度中間年報 水素製造・輸送・貯蔵システム等技術開発 水素製造・輸送・貯蔵システム等に使用する金属材料開発、および国際標準化・規制見直しに資する評価試験法の開発、材料データの取得に係る研究開発(1)
公開日2013/3/20
報告書年度2011 - 2011
委託先名新日本製鐵株式會社
プロジェクト番号P08003
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. 研究開発の内容及び成果等 1 高圧水素および液体水素関連機器に用いるステンレス鋼および関連評価試験法の開発
a. 高圧水素ガス用材料の研究開発
高圧水素ガス中の材料特性データを取得する際に使用する、45MPaおよび99MPa級高圧水素ガス雰囲気下材料試験装置等の高圧ガス製造設備の安全稼働のため、高圧ガス保安法にて定められた法定年次自主点検を行い千葉県保安課による保安検査を受検した(平成23年12月19日 合格)。
英文要約Title: Development of Technologies for Hydrogen Production, Delivery and Storage Systems. Development of Stainless Steels for Hydrogen-related Services Including High Pressure Hydrogen gas and Liquid Hydrogen, and Development of Related Materials Testing Methods (FY 2010-FY2012) FY2011 Annual Report (1)a. Research and development of materials used in high pressure hydrogen gas environment
 Annual overhaul inspection of testing machines for materials evaluation in high pressure hydrogen gas was conducted and passed the official safety inspection by Chiba prefectural office. In addition, various safety enhancement measures were applied as well as the repairs to the troubles, according with the guidance by the prefectural office etc., after the Great East Japan Earthquake.
Introduction of compact fatigue testing devices in high pressure hydrogen gas was completed, and it was confirmed that they correctly work. However, unexpectedly large drift of the measured load caused by small temperature deference was found later, and the inner load cell structure was modified. Some other safety measures were also employed such as modification of gas release lines. All those procedures took more time than expected, and full operation of the devices are planned to start in FY2012.
In spite of a lot of obstacles described above, valuable data were obtained.
 STH2 (low-cost and high-strength stainless steel for hydrogen services, containing reduced amount of Ni and no Mo) was fully evaluated. In an as-solution treated condition, it did not show serious hydrogen embrittlement in hydrogen gas at up to 90 MPa at -40 to 85?C. Acceleration of fatigue crack growth rate was not recognized even in 90MPa hydrogen gas at room temperature. Evaluation of the 40% cold worked STH2 was started and tensile tests in 45MPa hydrogen gas showed no serious deterioration of properties.
b. Research and development of materials used in liquid hydrogen
As high pressure hydrogen gas was specially emphasized in FY2011, mechanical tests in liquid hydrogen were not conducted. However, the testing machine was effectively used for the evaluation of properties of SHT2 at room temperature in air for comparison.
c. Investigation of materials used in the long-term used hydrogen systems
 Any clear evidence indicating hydrogen damage was not confirmed in the samples taken from Ariake and Kasumigaseki hydrogen stations although some points to be improved on the construction of the facilities were extracted.
d. Development of materials testing methods for formulation of international standards and deregulation
 In the related working group and committee, we expressed our opinions and technical advice positively, based on our accumulated experience and expertise in this field.
e. Expansion of the database
The data obtained by all four participating institutes were added to the previously formulated database. The data were input by a consigned institute with highly enriched knowledge and experience.


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