Trapping and detrapping of hydrogen in graphite materials exposed to hydrogen gas
スポンサーリンク
概要
- 論文の詳細を見る
Measurements of hydrogen solubility have been performed for several unirradiated and neutron-irradiated graphite (and CFC) samples at temperatures between 973 and 1323K under a 〜10 kPa hydrogen atmosphere. The hydrogen dissolution process has been studied and it is discussed here. The values of hydrogen solubility vary substantially among the samples up to about a factor of 16. A strong correlation has been observed between the values of hydrogen solubility and the degrees of graphitization determined by X-ray diffraction technique. The relation can be extended even for the neutron irradiated samples. Hydrogen dissolution into graphite can be explained with the trapping of hydrogen at defect sites (e.g. dangling carbon bonds) considering an equilibrium reaction between hydrogen molecules and the trapping sites. The migration of hydrogen in graphite is speculated to result from a sequence of detrapping and retrapping events with high energy activation processes.graphitehydrogen retentionreactor irradiation
- 東北大学の論文
- 1994-09-16
著者
-
Shikama Tatsuo
The Oarai Branch, Institute for Material Research, Tohoku University
-
Shikama Tatsuo
The Oarai Branch Institute For Materials Research Tohoku University
-
Atsumi Hisao
Department of Nuclear Reactor Engineering, Faculty of Science and Technology, Kinki University
-
Iseki Michio
Department of Nuclear Engineering, Faculty of Engineering, Nagoya University
-
Atsumi Hisao
Department Of Nuclear Reactor Engineering Faculty Of Science And Technology Kinki University
-
Iseki Michio
Department Of Nuclear Engineering Faculty Of Engineering Nagoya University
関連論文
- Neutron Irradiation Effects on Optical Fibers
- Electrical current and voltatge induced in MI-cable under irradiation in JMTR
- In Reactor Measurement of Electrical Conductivity of Single Crystal α-Alumina
- Magnetic Properties of U(Ru_Rh_x)_2Si_2 : Heavy Fermion Properties and Successive Magnetic Phase Transitions : Chapter 6. Magnetic Properties : 6-4. Low Temperature Magnetic Properties
- Trapping and detrapping of hydrogen in graphite materials exposed to hydrogen gas
- Development Of High Time-Resolution Laser Flash Equipment For Thermal Diffusivity Measurements Using Miniature-Size Specimens Irradiated Heavily In A Reactor
- Neutron Irradiation Effects of V-Ti Binary Alloys
- Development of rig for fundamental study of radiation effects on fusion materials in JMTR
- Study of Radiation Induced Electrical Degradation of Alumina in a Dynamic Pumping Condition in a Fission Reactor
- Irradiation Behavior of developed radiaiton resistance optical-fibers and observed optical radiation from their SiO_2 cores under reactor irradiation
- Development of Irradiation Techniques for Material Study in JMTR
- Transport Properties of USb and UTe
- Purification of Uranium Metal : 3-1 Purification : Chapter 3. Preparation and Characterization of Materials
- Study of Properties of Uranium and its Compounds I : Purification of Metallic Uranium
- Radiation effects in Ceramics I. Study of Dynamic Irradiation Effects on Electrical Conductivity in JMTR : in comparison with results obtained with other irradiation sources
- PROPOSAL FOR FFTF MOTA EXPERIMENTS ON CERAMICS AND COMPOSITE MATERIALS : SUB-GROUP (E) PROGRAM