1991 年度実績報告書

金属水素化物ヒ-トポンプ材用バナジウム基固溶合金の開発

研究課題

研究課題/領域番号	02650523
研究機関	長崎大学
研究代表者	坂本芳一長崎大学, 工学部, 教授 (50026019)
研究分担者	香川明男長崎大学, 工学部, 助教授 (00093401)
キーワード	水素 / 金属水素化物ヒ-トポンプ / バナジウム基固溶合金 / 水素化物の生成・解離
研究概要	(V_<1ーx>Tix)_<1ーy>Xy(X=Al,Si,Cr,Fe,Co,Ni,Zr)3元合金の水素吸蔵・脱蔵挙動(pーcーT曲線)を温度0〜130℃の所定温度でジ-ベルト法によって検討した。その結果は次のように要約される。 1)第3元素の添加による最大水素唆蔵量は減少するが,その減少度合はVー10at%Ti系ではCrとZr,Vー15at%Ti系ではFeとZrを含む合金で小さい。水素化物生成のエンタルピ-,エントロピ-変化は第3添加元素によって顕著な変化は観察されなかった。 2)プラト-圧はZr添加の場合は減少するが,他の添加元素は上昇する。脱蔵時のプラト-圧はAlを含む合金を除き,格子定数の減少と共に増大する。従って適当な第3添加元素によってパラト-圧を制御可能である。ヒステレシスはTi量が10at%までは変化せず,15at%Ti以上では大きくなる傾向がある。以上,第3元素の添加効果として,VーTi2元合金の全べての水素化特性を向上させる元素は見出せなかったが,Vー10at%Ti系ではヒステレシスへの効果を除けば,CrとZrの添加が最適であった。またFeを添加した合金ではヒステレシスが若干減少した。 3)Vー10at%Ti系元合金のPーCーT特性に及ぼす水素化サイクル(100〜500回)の影響を調べた結果,FeあるいはCrを含む3元合金でもVーTi2元合金と同様に,サイクル数の増加と共に吸蔵量の減少およびプラト-圧の上昇が観察された。しかしCr添加の場合は吸蔵量の低下は比較的小さい。水素吸蔵・放出サイクル後,試片の粒度分布を調べた結果,第3元素を含む3元合金の微粉化の進行はVーTi2元合金のそれに比して遅く,100サイクル以上ではその粒度分布に大きな変化はみられなかった。従って第3元素の添加によって耐微粉化性が向上することがわかった。

研究成果
(23件)

すべてその他

すべて文献書誌 (23件)

[文献書誌] Y.Sakamoto,T.Matsuo,H.Sakai and T.B.Flanagan: "Absorption of Hydrogen by PalladiumーNickel alloys" Z.Phys.Chem.Neue Folge. 162. 83-96 (1989)
[文献書誌] Y.Sakamoto,K.Kajihara,E.Ono,K.Baba and T.B.Flanagan: "Hydrogen Solubility in PalladiumーVanadium Alloys" Z.Phys.Chem.Neue Folge. 165. 67-81 (1989)
[文献書誌] F.LChen,M.Furukawa and Y.Sakamoto: "XーRay Investigation of the α/β Miscibility Gaps in Hydrogenated PalladiumーRare Earth Alloys" J.LessーCommon Metals. 155. 173-184 (1989)
[文献書誌] K.Baba,U.Miyagawa,K.Watanabe,Y.Sakamoto and T.B.Flanagan: "Electrical Resistivity Change due to Interstitial Hydrogen in PalladiumーRich Substitutional Alloys" J.Materials Science. 25. 3910-3916 (1990)
[文献書誌] Y.Sakamoto,K.Kajihara,T.Kikumura and T.B.Flanagan: "Absorption of Hydrogen by PdーNb(Ta)Solid Solution Alloys" J.Chem.Soc.,Faraday Trans.86. 377-385 (1990)
[文献書誌] Y.Sakamoto,F.L.Chen,M.Furukawa and K.Mine: "XーRay Studies of the Absorption of Hydrogen by Pd rich Pdー(Tb,Tm,Lu)Alloys" J.LessーCommon Metals. 159. 191-198 (1990)
[文献書誌] Y.Sakamoto,F.L.Chen,M.Furukawa and T.B.Flanagan: "Thermodynamic Behaviour of Hydrogen in Palladium=Gadolinium Solid Solution Alloys" Ber.Bunsenges.Phys.Chem.94. 190-198 (1990)
[文献書誌] Y.Sakamoto,K.Takao and M.Ohmaki: "The Phase Transition in PalladiumーRich PdーCe Alloy System" J.LessーCommon Metals. 162. 343-359 (1990)
[文献書誌] Y.Sakamoto,F.L.Chen,M.Furukawa and K.Mine: "The(α+3)Hydrogen Miscibility Gaps in Hydrogenated Palladium Rich PdーY(Gd)ーAg Ternary Alloys" J.LessーCommon Metals. 166. 45-56 (1990)
[文献書誌] K.Baba,Y.Niki,Y.Sakamoto and T.B.Flanagan: "HydrogenーInduced Ordering in PalladiumーRich PdーMn Alloys" J.LessーCommon Metals. 172ー174. 246-253 (1991)
[文献書誌] F.L.Chen,M.Furukawa and Y.Sakamoto: "Hydrogen Solubility in PalladiumーYtterbium Solid Solution Alloys" J.LessーCommon Metals. 172ー174. 56-63 (1991)
[文献書誌] A.Kagawa,E.Ono,T.Kusakabe and Y.Sakamoto: "Absorption of Hydrogen by VanadiumーRich VーTi Based Alloys" J.LessーCommon Metals. 172ー174. 64-70 (1991)
[文献書誌] Y.Sakamoto,U.Miyagawa E.Hamamoto,F.L.Chen,T.B.Flanagan and R.A.McNicholl: "Thermodynamic Studies of the Absorption of hydrogen by PdーTi(Zr)Solid Solution Alloys" Ber.Bunsenges.Phys.Chem.94. 1457-1464 (1990)
[文献書誌] Y.Sakamoto,K.Takao and Y.Nagaoka: "The PalladiumーRich PdーHo(Er)Systems" J.Materials Science Letters. 10. 341-344 (1990)
[文献書誌] Y.Sakamoto,X.Q.Tong and F.A.Lewis: "Effects of NonーFickian UpーHill Components of Permeation Flux on Estimations of Hydrogen Diffusion Coefficients in Pd/H System" Scripta Metall.Mater.25. 1629-1634 (1991)
[文献書誌] Y.Sakamoto,F.L.Chen,J.Muto and T.B.Flanagan: "The Phase Transitions in PalladiumーRich PdーLi Alloy Systems and Hydrogen Solubility in the Solid Solution Alloys" Z.Phys.Chem.Neue Folge.
[文献書誌] Y.Sakamoto,N.Ishimaru and Y.Mukai: "Thermodynamics of Solution of Hydrogen in PdーCu and PdーCuーAu Solid Solution Alloys" Ber.Bunsenges.Phys.Chem.95. 680-688 (1991)
[文献書誌] Y.Sakamoto,K.Baba,Y.Niki,Y.Ishibashi and T.B.Flanagan: "The Kinetics of HydrogenーInduced Ordering in Pd_3Mn to the Ll_2ーtype Structure" J.Alloys and Compounds.
[文献書誌] T.B.Flanagan,A.P.Craft,K.Baba,Y.Niki and Y.Sakamoto: "HydrogenーInduced Metal Atom Rearrangements in Pd_<3+x>Mn_<1ーx> Alloys with x>0 using TEM,Electrical Resistivities and H_2 Solubilities" J.Alloys and Compounds.
[文献書誌] Y.Sakamoto,F.L.Chen,M.Furukawa and M.Noguchi: "Permeabilities and Diffusivities of Hydrogen in PalladiumーRich PdーY(Gd)ーAg Alloys" J.Alloys and Compounds.
[文献書誌] Y.Sakamoto,N.Ishimaru and Y.Inoue: "Solubility of Hydrogen in PalladiumーYtteriumーSilver Alloys" Ber.Bunsenges.Phys.Chem.
[文献書誌] K.Baba,Y.Niki,Y.Sakamoto and T.B.Flanagan: "The Phase Transition in PalladiumーManganese Alloys with up to 33.3at.%Mn" J.Alloys and Compounds.
[文献書誌] 坂本芳一,香川明男: "'90日本冷凍空調年鑑(分担執筆)" 日本冷凍冷房新聞社, 2 (1990)

1991 年度 実績報告書

金属水素化物ヒ-トポンプ材用バナジウム基固溶合金の開発

研究代表者

坂本 芳一 長崎大学, 工学部, 教授 (50026019)

研究成果

[文献書誌] Y.Sakamoto,T.Matsuo,H.Sakai and T.B.Flanagan: "Absorption of Hydrogen by PalladiumーNickel alloys" Z.Phys.Chem.Neue Folge. 162. 83-96 (1989)

[文献書誌] Y.Sakamoto,K.Kajihara,E.Ono,K.Baba and T.B.Flanagan: "Hydrogen Solubility in PalladiumーVanadium Alloys" Z.Phys.Chem.Neue Folge. 165. 67-81 (1989)

[文献書誌] F.LChen,M.Furukawa and Y.Sakamoto: "XーRay Investigation of the α/β Miscibility Gaps in Hydrogenated PalladiumーRare Earth Alloys" J.LessーCommon Metals. 155. 173-184 (1989)

[文献書誌] K.Baba,U.Miyagawa,K.Watanabe,Y.Sakamoto and T.B.Flanagan: "Electrical Resistivity Change due to Interstitial Hydrogen in PalladiumーRich Substitutional Alloys" J.Materials Science. 25. 3910-3916 (1990)

[文献書誌] Y.Sakamoto,K.Kajihara,T.Kikumura and T.B.Flanagan: "Absorption of Hydrogen by PdーNb(Ta)Solid Solution Alloys" J.Chem.Soc.,Faraday Trans.86. 377-385 (1990)

[文献書誌] Y.Sakamoto,F.L.Chen,M.Furukawa and K.Mine: "XーRay Studies of the Absorption of Hydrogen by Pd rich Pdー(Tb,Tm,Lu)Alloys" J.LessーCommon Metals. 159. 191-198 (1990)

[文献書誌] Y.Sakamoto,F.L.Chen,M.Furukawa and T.B.Flanagan: "Thermodynamic Behaviour of Hydrogen in Palladium=Gadolinium Solid Solution Alloys" Ber.Bunsenges.Phys.Chem.94. 190-198 (1990)

[文献書誌] Y.Sakamoto,K.Takao and M.Ohmaki: "The Phase Transition in PalladiumーRich PdーCe Alloy System" J.LessーCommon Metals. 162. 343-359 (1990)

[文献書誌] Y.Sakamoto,F.L.Chen,M.Furukawa and K.Mine: "The(α+3)Hydrogen Miscibility Gaps in Hydrogenated Palladium Rich PdーY(Gd)ーAg Ternary Alloys" J.LessーCommon Metals. 166. 45-56 (1990)

[文献書誌] K.Baba,Y.Niki,Y.Sakamoto and T.B.Flanagan: "HydrogenーInduced Ordering in PalladiumーRich PdーMn Alloys" J.LessーCommon Metals. 172ー174. 246-253 (1991)

[文献書誌] F.L.Chen,M.Furukawa and Y.Sakamoto: "Hydrogen Solubility in PalladiumーYtterbium Solid Solution Alloys" J.LessーCommon Metals. 172ー174. 56-63 (1991)

[文献書誌] A.Kagawa,E.Ono,T.Kusakabe and Y.Sakamoto: "Absorption of Hydrogen by VanadiumーRich VーTi Based Alloys" J.LessーCommon Metals. 172ー174. 64-70 (1991)

[文献書誌] Y.Sakamoto,U.Miyagawa E.Hamamoto,F.L.Chen,T.B.Flanagan and R.A.McNicholl: "Thermodynamic Studies of the Absorption of hydrogen by PdーTi(Zr)Solid Solution Alloys" Ber.Bunsenges.Phys.Chem.94. 1457-1464 (1990)

[文献書誌] Y.Sakamoto,K.Takao and Y.Nagaoka: "The PalladiumーRich PdーHo(Er)Systems" J.Materials Science Letters. 10. 341-344 (1990)

[文献書誌] Y.Sakamoto,X.Q.Tong and F.A.Lewis: "Effects of NonーFickian UpーHill Components of Permeation Flux on Estimations of Hydrogen Diffusion Coefficients in Pd/H System" Scripta Metall.Mater.25. 1629-1634 (1991)

[文献書誌] Y.Sakamoto,F.L.Chen,J.Muto and T.B.Flanagan: "The Phase Transitions in PalladiumーRich PdーLi Alloy Systems and Hydrogen Solubility in the Solid Solution Alloys" Z.Phys.Chem.Neue Folge.

[文献書誌] Y.Sakamoto,N.Ishimaru and Y.Mukai: "Thermodynamics of Solution of Hydrogen in PdーCu and PdーCuーAu Solid Solution Alloys" Ber.Bunsenges.Phys.Chem.95. 680-688 (1991)

[文献書誌] Y.Sakamoto,K.Baba,Y.Niki,Y.Ishibashi and T.B.Flanagan: "The Kinetics of HydrogenーInduced Ordering in Pd_3Mn to the Ll_2ーtype Structure" J.Alloys and Compounds.

[文献書誌] T.B.Flanagan,A.P.Craft,K.Baba,Y.Niki and Y.Sakamoto: "HydrogenーInduced Metal Atom Rearrangements in Pd_<3+x>Mn_<1ーx> Alloys with x>0 using TEM,Electrical Resistivities and H_2 Solubilities" J.Alloys and Compounds.

[文献書誌] Y.Sakamoto,F.L.Chen,M.Furukawa and M.Noguchi: "Permeabilities and Diffusivities of Hydrogen in PalladiumーRich PdーY(Gd)ーAg Alloys" J.Alloys and Compounds.

[文献書誌] Y.Sakamoto,N.Ishimaru and Y.Inoue: "Solubility of Hydrogen in PalladiumーYtteriumーSilver Alloys" Ber.Bunsenges.Phys.Chem.

[文献書誌] K.Baba,Y.Niki,Y.Sakamoto and T.B.Flanagan: "The Phase Transition in PalladiumーManganese Alloys with up to 33.3at.%Mn" J.Alloys and Compounds.

[文献書誌] 坂本 芳一,香川 明男: "'90日本冷凍空調年鑑(分担執筆)" 日本冷凍冷房新聞社, 2 (1990)

1991 年度実績報告書

坂本芳一長崎大学, 工学部, 教授 (50026019)

[文献書誌] 坂本芳一,香川明男: "'90日本冷凍空調年鑑(分担執筆)" 日本冷凍冷房新聞社, 2 (1990)