Transcription of 非Pd系水素透過膜の水素透過能 ... - oita-ct.ac.jp
1 43 18 11 . Pd . 1 2 2 3 4. 1 2 3 4 . Pd . Pd 5 A V. Nb SP . V Nb Pd Nb Nb-H .. : .. SP . 1 . 1).. Fig. 1 . SP .. Pd Swagelok . 3. 7N 40 Nm /h . 2) Pd 1 Pressure gage 1 . 2 Pressure gage 2 . Pd 1. 2 .. 5 A Leak Check valve V Nb Pd Vacuum pump V12.. V1 Leak valve V3. Pressure gage 2. Pressure gage 1. Pressure gage 3. 2 Nb V5 V4. V2. V6 H2. V9 V8. He V7. V11 V10. Pd . in-situ SP . Reserve tank 2 Reserve tank 1. Pd Pd V Pd SP jig Nb Pd Nb SP.. Fig. 1 Schematic drawing of gas piping system. - 19 - 43 18 11 . 2 SP . SP . SP SP . SUS304 SP . Pd Nb . Pd Nb 673 K . SP Pd V 623 K . SP 573 K 150 kPa He . SP .. K 673 K 300 kPa 3 . 2 . SP . Q mol/s . Q=P V/RT 1 . Q=DKS P1-P2 1/2/d 2 . J mol H2/m2s.
2 J=Q/S 3 . mol H2/msPa1/2 . 1 SP Jd/ P11/2-P21/2 4 . Pd V Pd Nb V 2 R . mass% V Nb J/mol K T 2 S . 30 gf D K . 1473 K P1 P2 P Pa/s . = P3/ t P3 2 t . 24 hrs.. 1 . 10 10 mm2 S 3 . 10 10 mm3 2 . m Al2O3 2 3 . D K 4 . 100 . nm Pd 10 10 mm3 SP Steward .. Load cell Push rod 2 SP . Upper jig SP . H2 gas flow . 3) . Specimen SUS ball . 4) SP . DBTT Ductile-Brittle Transition Temperature 5 10 mm Lower jig Fig. 2 . 10 10 mm3 . permeated H2 gas 4 N . m mm . mm Fig. 2 Schematic drawing of small-punch test machine mm/min. equipped with gas flow system.. - 20 - 43 18 11 . 773. Ductile 1 Pd Nb SP 673. Temperature, T / K. 5 Nb . Nb 573 Cleavage Gahr Birnbaum Nb . 473 ' . Fig. 3 . ' . '. 373. 6).
3 ' . 273. Hydrogen content H/Nb Nb . Fig. 3 Nb-H binary phase diagram. The hydrogen concentration, Nb H/M for ductile-cleavage fracture transition is shown as 5 an alternate long and short dash line6).. 1 . 2 H/M . 2.. 3 Pd Pure Nb / Pa1/2 673K.. 4 .. 5 . 1/2. Hydrogen pressure, P.. 1. Gahr Birnbaum . in-situ . Nb 673. 0. K PCT . 10 15 20 25 30 35 40 45 50. PCT Hydrogen content H/Nb mol% . Fig. 4 Fig. 4 Correlation between square root of hydrogen pressure and dissolved hydrogen content.. C = K P 1600. 673K. 1400 P1=15kPa P2=5kPa 1200. Pd Nb Pd Nb 1hr. permeated 1000. Load, F / N. 673 K 1 60 kPa 2 Pure Nb (Vacuum). 10 kPa 1 15 kPa 2 800. 5 kPa SP 600. 400 Pure Nb a SP . 200 Pd coated Nb SP Nb 673 K SP Fig.
4 5 0. 0 1 2 3 Deflection, x / mm Nb SP J . Fig. 5 Load-deflection curves of pure Nb, Pd coated Nb under high hydrogen concentration and pure Nb under vacuum condition. - 21 - 43 18 11 . He . Nb DBTT V .. He V . b SP . 1 60 kPa 2 10 kPa 1 hr.. SP Fig. 6 . Gahr Birnbaum 623 K SP J 573. K J . Pd Nb SP J V Nb . Pd .. Pd .. Pd Nb SP J 1600. 673K. 1400 P =60kPa 1. 1200 P2=10kPa 1hr. permeated 1000. Load, F / N. SP Pure Nb 800. (Vacuum). Pure Nb 600 c SP 400. 1 15 kPa 2 5 kPa 1hr. Pd coated Nb 200 Nb SP Fig. 5 . 0. Gahr Birnbaum 0 1 2 3 Deflection, x / mm Pd Nb SP J. Fig. 6 Load-deflection curves of pure Nb, Pd coated Nb under low hydrogen concentration and pure Nb under vacuum SP condition.
5 Pd Nb SP J Pd coated V. 200N. 2 Pd V He . SP in He Load, F / N. 623K Pd V 150kPa in He He SP 573K Fig. 7 623K . Hydrogen straged He 573K He 623K 623K 573K SP Hydrogen straged He SP 573K SP 0 1 2 Deflection, x / mm . He 623 K SP J. 573 K J Fig. 7 Load-deflection curves of Pd coated V in hydrogen and 623 K helium environments at 623 K and at 573 K. - 22 - 43 18 11 . Gahr Birnbaum . Hydrogen permeability, / mol m-1s-1Pa1/2. 10-3. Pd coated Nb 10-4. Pd coated V. Nb Pure Pd -5. 10. 10. -6. 3 . 10-7. a . Steward7) Fig. 8 10. -8. Nb 10-9 exp -9. 10. 4270/T . -10. V 10-9 exp 10. 2 2990/T Temperature, 103T-1 / K. -1. Pd 10-7 exp -1885/T . Fig. 9 Hydrogen permeabilities of Nb, V and Pd obtained by SP test jig.
6 B SP . SP Fig. 9 .. Pd Steward 1 Nb Pd Nb 673 K 1hr.. Pd Nb Pd Nb . Pd V . Nb V 2 Pd V Pd Nb . Pd . 3 Pd V Nb 673 K Pd . 4 Nb-H . 8) Nb V Pd .. 1) . Hydrogen permeability, / mol m-1s-1Pa1/2. 10-3. : . Pure Nb -4. 10 Pure V (2003). Pure Pd 2) : . -5. 10. 69 2005 9 pp. 841-843. 10-6 3) : 78. 10 -7 1992 3 pp. 485-492. 4) : . A 55 1989 515 . 10-8. pp. 1619-1622. 10-9 5) : 55 1985 8 pp. 13-19. 10-10 6) S. Gahr and H. K. Birnbaum, Acta Metall., 26(1978) pp. 2 1781-1788. -1. Temperature, 103T-1 / K. 7) S. A. Steward, Lawrence Livemore National Laboratory Reports UCRL-53441, (1983). Fig. 8 Theoretical permeabilities of Nb, V and Pd 8) : MEMBRANE 30 2005 1 pp. 13-19. estimated from a Steward's data.
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