ITMI20090458A1 - FORMULATION AND METHOD OF MANUFACTURE OF CORRECTIVE VANADIUM-NICKEL-CERIO BRIQUETTES FOR MEDIUM-CARBON STEEL WITH HIGH CHARACTERISTICS OF RESISTANCE TO SHOCK AND CONCENTRATED EFFORTS - Google Patents
FORMULATION AND METHOD OF MANUFACTURE OF CORRECTIVE VANADIUM-NICKEL-CERIO BRIQUETTES FOR MEDIUM-CARBON STEEL WITH HIGH CHARACTERISTICS OF RESISTANCE TO SHOCK AND CONCENTRATED EFFORTS Download PDFInfo
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- ITMI20090458A1 ITMI20090458A1 IT000458A ITMI20090458A ITMI20090458A1 IT MI20090458 A1 ITMI20090458 A1 IT MI20090458A1 IT 000458 A IT000458 A IT 000458A IT MI20090458 A ITMI20090458 A IT MI20090458A IT MI20090458 A1 ITMI20090458 A1 IT MI20090458A1
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- Prior art keywords
- point
- briquette
- corrective
- weight
- calcium
- Prior art date
Links
- 239000000203 mixture Substances 0.000 title claims description 18
- 238000004519 manufacturing process Methods 0.000 title claims description 12
- 238000009472 formulation Methods 0.000 title description 3
- 238000000034 method Methods 0.000 title description 2
- 229910000954 Medium-carbon steel Inorganic materials 0.000 title 1
- 230000035939 shock Effects 0.000 title 1
- 229910000831 Steel Inorganic materials 0.000 claims description 26
- 239000010959 steel Substances 0.000 claims description 26
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 17
- 239000004484 Briquette Substances 0.000 claims description 16
- 239000011575 calcium Substances 0.000 claims description 11
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 8
- 229910052684 Cerium Inorganic materials 0.000 claims description 8
- 229910052791 calcium Inorganic materials 0.000 claims description 8
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 claims description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- 229910052799 carbon Inorganic materials 0.000 claims description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 229910052759 nickel Inorganic materials 0.000 claims description 6
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims description 5
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 229910052698 phosphorus Inorganic materials 0.000 claims description 3
- 239000011574 phosphorus Substances 0.000 claims description 3
- 230000009471 action Effects 0.000 claims description 2
- 238000004220 aggregation Methods 0.000 claims description 2
- 230000002776 aggregation Effects 0.000 claims description 2
- 229910002056 binary alloy Inorganic materials 0.000 claims description 2
- 239000002893 slag Substances 0.000 claims description 2
- 239000010935 stainless steel Substances 0.000 claims description 2
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- 238000002604 ultrasonography Methods 0.000 claims description 2
- 230000015556 catabolic process Effects 0.000 claims 1
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 230000006698 induction Effects 0.000 claims 1
- 229910001092 metal group alloy Inorganic materials 0.000 claims 1
- 238000010276 construction Methods 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- 239000000470 constituent Substances 0.000 description 4
- 238000005275 alloying Methods 0.000 description 3
- -1 Vanadium-Nickel-Cerium Chemical compound 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229910052720 vanadium Inorganic materials 0.000 description 2
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003623 enhancer Substances 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000009916 joint effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000009418 renovation Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/064—Dephosphorising; Desulfurising
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/0006—Adding metallic additives
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/0037—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00 by injecting powdered material
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/023—Alloys based on nickel
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/007—Alloys based on nickel or cobalt with a light metal (alkali metal Li, Na, K, Rb, Cs; earth alkali metal Be, Mg, Ca, Sr, Ba, Al Ga, Ge, Ti) or B, Si, Zr, Hf, Sc, Y, lanthanides, actinides, as the next major constituent
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/0056—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00 using cored wires
- C21C2007/0062—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00 using cored wires with introduction of alloying or treating agents under a compacted form different from a wire, e.g. briquette, pellet
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Manufacture And Refinement Of Metals (AREA)
Description
“Formulazione e metodo di fabbricazione di bricchetti correttivi al Vanadio-Nichel-Cerio per acciai a medio tenore di carbonio con elevate caratteristiche di resistenza agli urti e a sforzi concentrati†⠀ œFormulation and manufacturing method of corrective Vanadium-Nickel-Cerium briquettes for medium carbon content steels with high impact resistance and concentrated stress characteristicsâ €
TESTO DELLA DESCRIZIONE TEXT OF THE DESCRIPTION
La presente invenzione riguarda la formulazione di bricchetti di aggiunta correttiva, a base di Vanadio-Nichel-Cerio, per acciai a medio tenore di carbonio, il metodo di produzione di tali bricchetti correttivi e utilizzo di tali bricchetti correttivi all’ interno del processo di fabbricazione dell’acciaio, allo scopo di incrementarne le doti di resilienza, tenacità e duttilità . The present invention relates to the formulation of corrective addition briquettes, based on Vanadium-Nickel-Cerium, for medium carbon content steels, the production method of such corrective briquettes and the use of such corrective briquettes within the process of steel manufacturing, in order to increase its resilience, toughness and ductility qualities.
Vasta e numerosa à ̈ la gamma di acciai disponibili sul mercato per soddisfare le diverse esigenze costruttive, ed essa spazia dagli unificati e normalizzati ai prodotti tipizzati. The range of steels available on the market is vast and numerous to meet the various construction requirements, and it ranges from unified and standardized to typed products.
Gli utilizzatori, per ragioni gestionali, tendono a circoscrivere e a standardizzare le proprie scelte in relazione agli impieghi dei manufatti in acciaio; per motivi di economicità si stabiliscono così settori di impiego abbastanza definiti. Users, for management reasons, tend to limit and standardize their choices in relation to the uses of steel products; in this way, fairly defined sectors of use are established for reasons of cost-effectiveness.
Il campo di utilizzo dei manufatti in acciaio per costruzioni antisismiche attualmente non à ̈ ancora molto fiorente, anche se, in seguito al definirsi di più rìgidi criteri di sicurezza costruttiva, soprattutto per il rifacimento epocale (termine della vita operativa delle strutture), ed all’introduzione di proposte strategiche per il rilancio dell’ economi a globale, subirà presumibilmente nel prossimo futuro una notevole espansione. The field of use of steel products for anti-seismic constructions is not yet very flourishing, even if, following the definition of more rigid constructive safety criteria, especially for the epochal renovation (end of the operational life of the structures), and with the introduction of strategic proposals for the relaunch of the global economy, it will presumably undergo considerable expansion in the near future.
Atualmente in commercio sono disponibili due grandi categorie di prodotti: Two broad categories of products are currently available on the market:
- acciai per costruzioni antisismiche di modeste caratteristiche e a basso costo, come gli acciai duttili al rame, il cui impiego resta però limitato ad opere minori; - steels for anti-seismic constructions with modest characteristics and low cost, such as ductile copper steels, the use of which is however limited to minor works;
- acciai con elevate caratteristiche meccaniche, ma che, per ragioni legate alla complessità produttiva ed al largo impiego di costituenti pregiati, presentano costi molto elevati, con la conseguenza che il loro uso appare giustificabile solo per opere dì grande importanza (centrali nucleari, rifugi antiatomici, ecc.). - steels with high mechanical characteristics, but which, for reasons related to production complexity and the wide use of valuable constituents, have very high costs, with the consequence that their use appears justifiable only for works of great importance (nuclear power plants, shelters antiatomic, etc.).
La disponibilità diffusa di acciai performanti con elevate proprietà meccaniche, in primis la resilienza, e costi contenuti potrebbe soddisfare le richieste del mercato di una categoria specifica di manufatti per l’impiego massivo antisismico. The widespread availability of high-performance steels with high mechanical properties, primarily resilience, and low costs could satisfy the market demands of a specific category of products for massive anti-seismic use.
Da questa necessità tecnica nasce quindi l’esigenza e l’opportunità di produrre peculiari trovati siderurgici, senza apportare modifiche impiantistiche nelle acciaierie e limitando di conseguenza i costi di fabbricazione. From this technical necessity arises the need and the opportunity to produce particular iron and steel foundations, without making plant modifications in the steel mills and consequently limiting manufacturing costs.
Il trovato oggetto della presente domanda di brevetto si propone di ottenere acciai con elevate doti di duttilità , resilienza e tenacità con modesti costi aggiuntivi. The invention which is the subject of the present patent application aims to obtain steels with high qualities of ductility, resilience and toughness with modest additional costs.
La tecnologia qui rivendicata permette infatti, attraverso l’integrazione di un bricchetto correttivo, i cui costituenti in bassa percentuale svolgono una marcata azione sinergica, su bagno d’acciaio fuso a medio tenore di carbonio (C da 0.2% a 0.28%), di fabbricare acciai molto performanti con costi contenuti, rendendo possibile la diffusione su larga scala nel settore delle costruzioni civili. The technology claimed here allows in fact, through the integration of a corrective briquette, whose constituents in a low percentage perform a marked synergistic action, on a medium carbon content molten steel bath (C from 0.2% to 0.28%) , to manufacture high-performance steels with low costs, making it possible to spread them on a large scale in the civil construction sector.
Le notevoli caratteristiche meccaniche della categoria di acciai fabbricati secondo la tecnologia rivendicata, derivano da due fattori concomitanti: The remarkable mechanical characteristics of the category of steels manufactured according to the claimed technology derive from two concomitant factors:
- la formulazione qualitativa e quantitativa del bricchetto correttivo - il sistema di fabbricazione del bricchetto correttivo. - the qualitative and quantitative formulation of the corrective briquette - the manufacturing system of the corrective briquette.
La fig. 1 mostra la natura dei costituenti ed il range delle proporzioni ottimali: l’elemento Vanadio, forte innalzatore della resilienza, l’elemento Nichel determinante per un aumento della tenacità e della duttilità , esaltata dalla compresenza dell’elemento Cerio. Le proprietà di tali elementi ad azione congiunta sì esercitano integralmente quando nella lega risulta praticamente assente il fosforo: tale elemento fragilizzante dell’acciaio inibisce infatti i meccanismi di formazione dì particolari strutture metallografiche, che con effetti macroscopici determinerebbero l’innalzamento delle caratteristiche meccaniche. E pertanto necessario operare nella lega in alligazione una defosforazione molto spinta, ottenibile atraverso l’azione del Calcio di pjroscissione, contenuto anch’esso nel bricchetto alligante. L’elemento Calcio, costituente del mix presente nel bricchetto correttivo, subisce una piroscissione e si combina con le piccolissime quantità di Fosforo presente nella massa di acciaio fuso, separandosi poi nelle scorie. Fig. 1 shows the nature of the constituents and the range of optimal proportions: the Vanadium element, a strong resilience enhancer, the Nickel element, which is decisive for an increase in toughness and ductility, enhanced by the coexistence of the Cerium element. The properties of these joint action elements are fully exercised when phosphorus is practically absent in the alloy: this fragilizing element of the steel inhibits the mechanisms of formation of particular metallographic structures, which with macroscopic effects would determine the raising of the mechanical characteristics. It is therefore necessary to perform a very thorough dephosphoration in the alloyed alloy, obtainable through the action of the pjroscission calcium, also contained in the alloying briquette. The Calcium element, a constituent of the mix present in the corrective briquette, undergoes a cracking and combines with the very small quantities of Phosphorus present in the molten steel mass, then separating in the slag.
Come descritto in fig. 1 il bricchetto correttivo alligante à ̈ fonnato da un crogiuolo contenitore 3 in lega binaria Nichel 80% - Vanadio 20%, e dal mix 2, formato da Cerio (β) in piccola pezzatura (50% in volume e 81.4% in peso del mix) e Calcio (a) sotto forma polverulenta (50% in volume e 18.6% in peso del mix), che viene caricato nel crogiuolo contenitore 3. As described in fig. 1 the corrective alligating briquette is made from a container crucible 3 in binary alloy Nickel 80% - Vanadium 20%, and from mix 2, formed by Cerium (β) in small size (50% by volume and 81.4% by weight of the mix ) and Calcium (a) in powder form (50% by volume and 18.6% by weight of the mix), which is loaded into the container crucible 3.
Il crogiuolo contenitore 3 rappresenta il 62% in peso del bricchetto finale, mentre il mix 2 il 38% in peso del bricchetto finale. The container crucible 3 represents 62% by weight of the final briquette, while the mix 2 represents 38% by weight of the final briquette.
La fìg. 2 illustra il metodo di fabbricazione impiegato per ottenere il bricchetto alligante. 11 crogiuolo 3 viene posto tramite il supporto 8, trasmettitore delle onde sonore, sopra all’oscillatore ad alta frequenza 9, alimentato dal generatore 7 (da 12000 Hz a 30000 H z), raffreddato mediante circolazione di liquido refrigerante. La base massiva 10 consente la diffusione degli ultrasuoni al crogiuolo 3, circondato da induttori di riscaldamento 6. mix 2 viene caricato, mediante il dosatore automatico 4, nel crogiuolo 3; la cappa 5 aspira i fumi che si sviluppano nel mix durante il riscaldamento amalgamante di a e β alla temperatura di circa 850°C. Dopo il trattamento ad elevata temperatura, il crogiuolo 3 viene sigillato con il coperchio 1 in acciaio inox. The fìg. 2 illustrates the manufacturing method used to obtain the alloying briquette. The crucible 3 is placed by means of the support 8, transmitter of the sound waves, above the high frequency oscillator 9, powered by the generator 7 (from 12000 Hz to 30000 H z), cooled by the circulation of refrigerant liquid. The massive base 10 allows the diffusion of the ultrasounds to the crucible 3, surrounded by heating inductors 6. mix 2 is loaded, by means of the automatic dispenser 4, into the crucible 3; hood 5 sucks in the fumes that develop in the mix during the amalgamating heating of a and β at a temperature of about 850 ° C. After the high temperature treatment, the crucible 3 is sealed with the stainless steel lid 1.
L’aggregazione alligante sull’acciaio di base a medio tenore di carbonio si effettua immettendo le prestabilite quantità di bricchetti nel bagno fuso; si procede quindi omogeneizzando la lega e si prosegue nelle operazioni di laminazione, trafilatura o fusione per ottenimento dei semilavorati. The alloying aggregation on the base steel with medium carbon content is carried out by introducing the predetermined quantities of briquettes into the molten bath; we then proceed by homogenizing the alloy and continuing with the rolling, drawing or casting operations to obtain the semi-finished products.
La quantità ottimale di bricchetti da immettere nel bagno fuso à ̈ nella proporzione del 3% in peso; con tale aggiunta si ottiene un acciaio con la composizione finale ottimale: Carbonio (C) 0.25%, Vanadio (V) 0.4%, Cerio (Ce) 1%, Nichel (Ni) 1.6%, Ferro 96.75% in peso. Ϊ manufatti realizzati impiegando la lega così ottenuta, pur con modesto contenuto di alliganti, presentano notevoli performances per valori di resilienza e per la capacità di sopportare concentrazioni di sforzo localizzate ed ostacolare la propagazione di cricche e fratture. Le applicazioni tipiche di questi acciai sono le armature speciali per il confinamento delle tensioni nel calcestruzzo armato e la realizzazione di vincoli, giunti, nodi di strutture dinamicamente sollecitate con carichi pulsanti e di fatica, come quelli presentì nelle costruzioni ferroviarie. The optimal quantity of briquettes to be introduced into the molten bath is in the proportion of 3% by weight; with this addition a steel with the optimal final composition is obtained: Carbon (C) 0.25%, Vanadium (V) 0.4%, Cerium (Ce) 1%, Nickel (Ni) 1.6%, Iron 96.75% by weight. Ϊ artifacts made using the alloy thus obtained, albeit with a modest content of alligants, show remarkable performances for resilience values and for the ability to withstand localized stress concentrations and hinder the propagation of cracks and fractures. The typical applications of these steels are special reinforcements for the confinement of stresses in reinforced concrete and the creation of constraints, joints, nodes of structures dynamically stressed with pulsating and fatigue loads, such as those present in railway constructions.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ITMI2009A000458A IT1398625B1 (en) | 2009-03-24 | 2009-03-24 | FORMULATION AND METHOD OF MANUFACTURE OF CORRECTIVE VANADIUM-NICKEL-CERIO BRIQUETTES FOR MEDIUM-CARBON STEEL WITH HIGH CHARACTERISTICS OF RESISTANCE TO SHOCK AND CONCENTRATED EFFORTS |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ITMI2009A000458A IT1398625B1 (en) | 2009-03-24 | 2009-03-24 | FORMULATION AND METHOD OF MANUFACTURE OF CORRECTIVE VANADIUM-NICKEL-CERIO BRIQUETTES FOR MEDIUM-CARBON STEEL WITH HIGH CHARACTERISTICS OF RESISTANCE TO SHOCK AND CONCENTRATED EFFORTS |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| ITMI20090458A1 true ITMI20090458A1 (en) | 2010-09-25 |
| IT1398625B1 IT1398625B1 (en) | 2013-03-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| ITMI2009A000458A IT1398625B1 (en) | 2009-03-24 | 2009-03-24 | FORMULATION AND METHOD OF MANUFACTURE OF CORRECTIVE VANADIUM-NICKEL-CERIO BRIQUETTES FOR MEDIUM-CARBON STEEL WITH HIGH CHARACTERISTICS OF RESISTANCE TO SHOCK AND CONCENTRATED EFFORTS |
Country Status (1)
| Country | Link |
|---|---|
| IT (1) | IT1398625B1 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1705390A1 (en) * | 1990-04-04 | 1992-01-15 | Всесоюзный Заочный Политехнический Институт | Alloying additive for steel |
| US20080156392A1 (en) * | 2006-09-29 | 2008-07-03 | Tatsuoki Kohno | Hydrogen storage alloy, hydrogen separation membrane, hydrogen storage tank, and hydrogen absorption and desorption method |
-
2009
- 2009-03-24 IT ITMI2009A000458A patent/IT1398625B1/en active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1705390A1 (en) * | 1990-04-04 | 1992-01-15 | Всесоюзный Заочный Политехнический Институт | Alloying additive for steel |
| US20080156392A1 (en) * | 2006-09-29 | 2008-07-03 | Tatsuoki Kohno | Hydrogen storage alloy, hydrogen separation membrane, hydrogen storage tank, and hydrogen absorption and desorption method |
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| Publication number | Publication date |
|---|---|
| IT1398625B1 (en) | 2013-03-08 |
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