EP0570308A1 - Legierungen aus Metall mit hohen Schmelzpunkten geeignet für die Umwandlung in homogene und rein Blöcke, und Herstellungsverfahren dieser Legierungen - Google Patents
Legierungen aus Metall mit hohen Schmelzpunkten geeignet für die Umwandlung in homogene und rein Blöcke, und Herstellungsverfahren dieser Legierungen Download PDFInfo
- Publication number
- EP0570308A1 EP0570308A1 EP93420192A EP93420192A EP0570308A1 EP 0570308 A1 EP0570308 A1 EP 0570308A1 EP 93420192 A EP93420192 A EP 93420192A EP 93420192 A EP93420192 A EP 93420192A EP 0570308 A1 EP0570308 A1 EP 0570308A1
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- EP
- European Patent Office
- Prior art keywords
- metals
- bath
- potential
- alloy
- electrode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 62
- 239000000956 alloy Substances 0.000 title claims abstract description 62
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 56
- 239000002184 metal Substances 0.000 title claims abstract description 56
- 150000002739 metals Chemical class 0.000 title claims abstract description 32
- 230000008018 melting Effects 0.000 title claims description 7
- 238000002844 melting Methods 0.000 title claims description 7
- 230000009466 transformation Effects 0.000 title claims description 4
- 238000002360 preparation method Methods 0.000 title 1
- 239000013078 crystal Substances 0.000 claims abstract description 13
- 230000008021 deposition Effects 0.000 claims abstract description 13
- 150000003839 salts Chemical class 0.000 claims abstract description 9
- 239000006104 solid solution Substances 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims description 22
- 238000005868 electrolysis reaction Methods 0.000 claims description 18
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 13
- 150000001805 chlorine compounds Chemical class 0.000 claims description 11
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 10
- 229910002804 graphite Inorganic materials 0.000 claims description 9
- 239000010439 graphite Substances 0.000 claims description 9
- 229910052731 fluorine Inorganic materials 0.000 claims description 8
- 239000011737 fluorine Substances 0.000 claims description 8
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 6
- 239000004917 carbon fiber Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 239000003870 refractory metal Substances 0.000 claims description 6
- 238000007711 solidification Methods 0.000 claims description 6
- 230000008023 solidification Effects 0.000 claims description 6
- 229910021645 metal ion Inorganic materials 0.000 claims description 5
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 claims description 4
- 239000003513 alkali Substances 0.000 claims description 4
- 239000011261 inert gas Substances 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims description 3
- 239000000243 solution Substances 0.000 claims description 3
- 229910001507 metal halide Inorganic materials 0.000 claims 1
- 150000005309 metal halides Chemical class 0.000 claims 1
- 229910020012 Nb—Ti Inorganic materials 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 150000003841 chloride salts Chemical class 0.000 abstract 2
- 229910052726 zirconium Inorganic materials 0.000 description 11
- 238000000151 deposition Methods 0.000 description 10
- 150000002500 ions Chemical class 0.000 description 10
- 239000000203 mixture Substances 0.000 description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 150000004820 halides Chemical class 0.000 description 8
- 241000243142 Porifera Species 0.000 description 7
- 229910052735 hafnium Inorganic materials 0.000 description 7
- 239000010955 niobium Substances 0.000 description 7
- 239000010936 titanium Substances 0.000 description 7
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 6
- 230000004927 fusion Effects 0.000 description 6
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 description 6
- 229910052758 niobium Inorganic materials 0.000 description 5
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 241000287107 Passer Species 0.000 description 4
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 238000004090 dissolution Methods 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 3
- 229910001275 Niobium-titanium Inorganic materials 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000000460 chlorine Substances 0.000 description 3
- 229910052801 chlorine Inorganic materials 0.000 description 3
- 238000001000 micrograph Methods 0.000 description 3
- RJSRQTFBFAJJIL-UHFFFAOYSA-N niobium titanium Chemical compound [Ti].[Nb] RJSRQTFBFAJJIL-UHFFFAOYSA-N 0.000 description 3
- YHBDIEWMOMLKOO-UHFFFAOYSA-I pentachloroniobium Chemical compound Cl[Nb](Cl)(Cl)(Cl)Cl YHBDIEWMOMLKOO-UHFFFAOYSA-I 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- 229910052708 sodium Inorganic materials 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 229910052719 titanium Inorganic materials 0.000 description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- 229910003865 HfCl4 Inorganic materials 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- 229910019804 NbCl5 Inorganic materials 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 241001080024 Telles Species 0.000 description 2
- 229910001093 Zr alloy Inorganic materials 0.000 description 2
- 229910007932 ZrCl4 Inorganic materials 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- PDPJQWYGJJBYLF-UHFFFAOYSA-J hafnium tetrachloride Chemical compound Cl[Hf](Cl)(Cl)Cl PDPJQWYGJJBYLF-UHFFFAOYSA-J 0.000 description 2
- INIGCWGJTZDVRY-UHFFFAOYSA-N hafnium zirconium Chemical compound [Zr].[Hf] INIGCWGJTZDVRY-UHFFFAOYSA-N 0.000 description 2
- 229910052736 halogen Inorganic materials 0.000 description 2
- 150000002367 halogens Chemical class 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- -1 niobium-titanium-aluminum Chemical compound 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- DUNKXUFBGCUVQW-UHFFFAOYSA-J zirconium tetrachloride Chemical compound Cl[Zr](Cl)(Cl)Cl DUNKXUFBGCUVQW-UHFFFAOYSA-J 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 229910001362 Ta alloys Inorganic materials 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- JODOMBGKVAIYRQ-UHFFFAOYSA-N [Nb].[Ta].[Ti] Chemical compound [Nb].[Ta].[Ti] JODOMBGKVAIYRQ-UHFFFAOYSA-N 0.000 description 1
- VSTCOQVDTHKMFV-UHFFFAOYSA-N [Ti].[Hf] Chemical compound [Ti].[Hf] VSTCOQVDTHKMFV-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 230000002925 chemical effect Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011362 coarse particle Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004070 electrodeposition Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910001055 inconels 600 Inorganic materials 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000133 mechanosynthesis reaction Methods 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- RHDUVDHGVHBHCL-UHFFFAOYSA-N niobium tantalum Chemical compound [Nb].[Ta] RHDUVDHGVHBHCL-UHFFFAOYSA-N 0.000 description 1
- XTLMLBGRGAHTQE-UHFFFAOYSA-N niobium zirconium Chemical compound [Zr].[Nb].[Nb].[Nb] XTLMLBGRGAHTQE-UHFFFAOYSA-N 0.000 description 1
- 239000003758 nuclear fuel Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- BUKHSQBUKZIMLB-UHFFFAOYSA-L potassium;sodium;dichloride Chemical compound [Na+].[Cl-].[Cl-].[K+] BUKHSQBUKZIMLB-UHFFFAOYSA-L 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 229910000601 superalloy Inorganic materials 0.000 description 1
- VSSLEOGOUUKTNN-UHFFFAOYSA-N tantalum titanium Chemical compound [Ti].[Ta] VSSLEOGOUUKTNN-UHFFFAOYSA-N 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
- 239000012808 vapor phase Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 235000015041 whisky Nutrition 0.000 description 1
Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C3/00—Electrolytic production, recovery or refining of metals by electrolysis of melts
- C25C3/36—Alloys obtained by cathodic reduction of all their ions
Definitions
- the present invention relates to alloys of refractory metals suitable for transformation into homogeneous and pure ingots and to processes for obtaining said alloys.
- alloys formed from refractory metals having different melting temperatures of at least 200 ° C. such as for example the hafnium-zirconium, hafnium-titanium, niobium-titanium, niobiumzirconium, tantalum-titanium, tantalum alloys -zirconium, tantalum-niobium, niobium-tantalum-titanium and niobium-titanium-aluminum.
- these alloys have weight compositions such that their starting solidification temperature is at least 150 ° C. lower than the solidification temperature of the least meltable metal.
- alloys obtained initially in more or less divided form are then subjected to at least one operation of fusion so as to transform them into ingots.
- ingots can then be rolled in the form of sheets intended for the manufacture of nuclear fuel reprocessing containers in the case of Hf-Zr alloys or of neutron retarders in the case of Hf-Ti alloys or else of superconductive compounds or superalloys aeronautics in the case of the Nb-Ti alloy.
- the object of the invention is to obtain alloys having a homogeneous structure at the level of the elementary crystal, an improved purity compared to that of the products of the prior art and a suitable particle size so that they can be fully melted and transformed. in ingots in which this homogeneity of structure and purity is maintained.
- the invention relates to alloys of refractory metals suitable for transformation into homogeneous ingots of purity greater than 99.9% whose melting temperatures are different by at least 200 ° C and whose weight proportions are such that for each alloy the starting solidification temperature is more than 150 ° C lower than the solidification temperature of the least fusible metal, characterized in that they are in the form of agglomerates of dimensions between 0.2 and 30 mm and compounds crystals with a specific surface of between 0.005 and 0.2 m2 / g, having a size of 0.1 to 1 mm and in which the metals are in the form of a solid solution.
- the alloys according to the invention are characterized by crystals where the metals are in solid solution, that is to say that they are homogeneous on the atomic scale and have at most only a relative difference of composition of 20% relative to the average composition of the alloy so that this homogeneity remains during the melting and gives the ingots obtained identical properties at all points.
- these crystals and their agglomerates have a size and a specific surface such that the problems of spontaneous oxidation which arise when this surface is too large or of shaping of the products before fusion when this size is too large are avoided. , and as we favor the dissolution in liquid metal. Hence the absence of any pollution of these products by oxygen and iron, in particular during grinding operations, and the possibility of obtaining ingots of high purity ingots.
- the crystals have a specific surface of between 0.01 and 0.05 m2 / g and the agglomerates have dimensions of between 1.5 and 12 mm because it is within these ranges that the homogeneities and the maximum purities are obtained.
- the invention also relates to methods for obtaining said alloys.
- the technique for obtaining the alloy varies as a function of the difference in deposition potential of each of the elements of the alloy.
- a first technique is applicable to metals whose electrolytic deposition potentials are very little different from each other, that is to say when they have a difference of less than 0.5 volts while a second technique is relative to metals, the difference of the deposit potentials of which is at least equal to this value.
- the obtaining process consists in using an igneous electrolysis cell containing a bath of molten salts based on alkali chlorides and at least one fluoride ion in an amount comprised by weight between 1.5 and 5% of the weight of the bath in which are at least partially immersed a measurement electrode in relation to a reference electrode which are used to measure an electrolysis control potential, an anode assembly provided with a diaphragm based on carbon fibers and graphite, a cathode to which a continuous potential difference with respect to said assembly, an injector of material to be electrolyzed and of inert gas characterized in that the metals are simultaneously introduced into the injector in the form of gaseous chlorides in proportions corresponding to those of said alloy and in an amount such that the molar ratio of the fluorine contained in the bath to the amount of metals introduced is understood between 2.5 and 15, the value of the control potential known as the reference potential is noted
- the method consists in carrying out electrolysis in a cell equipped with a control device.
- an anode assembly is also used, provided with a particular diaphragm and as described in US Pat. No. 5,064,513.
- This diaphragm is made up of carbon fibers embedded in a rigid graphite-based material and has the property of having a porosity of determined value which allows easier conduct of the electrolysis and obtaining a metallic deposit of regular structure.
- the merit of the Applicant has been to show that these advantages are achieved when several types of ions are used simultaneously.
- the method also uses an injector such as that described in French patent 2653139 and which has the effect of maintaining the concentration by weight of the bath within a restricted range and of adjusting it gradually and precisely.
- This has the advantage in the present case of being able to more easily control the conditions for obtaining a deposit where the proportions of the different metals must be included within narrow limits.
- this method is not applicable when the metals to be deposited have a deposit potential difference greater than or equal to 0.5 volts, such as, for example, in the case of niobium-titanium alloys, since a preferential deposit then occurs. the least electronegative metal and therefore an alloy in which the elements are not in the desired proportion. It is therefore necessary to find another process for obtaining it.
- an igneous electrolysis cell containing a bath of molten salts based on alkali chlorides and at least one fluoride ion in an amount between 1 and 3% by weight of the bath in which are at least partially immersed a control electrode in relation to a reference electrode which are used to measure a control potential, an anode assembly provided with a diaphragm based on carbon fibers and graphite, a cathode of deposit to which a continuous potential difference E1 is applied with respect to said assembly, an injector of material to be electrolyzed and of inert gas characterized in that an electrode consisting of the most electronegative metal of the is introduced into the bath alloy to be deposited and by the injector the halide of the most electropositive metal of the alloy to be deposited, a positive potential difference E2 is established between said electrode and the in jector so that the metal of the electrode passes into solution in the bath, the concentrations of metal ions in the bath are adjusted so as to have a proportion in
- the invention consists in combining in a same igneous electrolysis cell the teaching of the three patents mentioned above, but it differs from it in that at the filing of at least one metal by electrolytic reduction of its halide is associated with a deposit obtained from metal ions resulting in part from an anodic dissolution.
- This type of process is also applicable to the case of two metals having close deposition potentials but since the chemical dissolution is then relatively low, it is necessary to strongly polarize the soluble anode to obtain the suitable concentration in the bath.
- said crystals are washed with water to remove the salts present in the bath and then formed into ingots by fusion using a suitable means such as, for example, an arc furnace , induction, electron bombardment, inductive plasma or arc plasma.
- a suitable means such as, for example, an arc furnace , induction, electron bombardment, inductive plasma or arc plasma.
- alloys are in the form of agglomerates having an average size of 10 mm and composed of crystals of 3 mm in average diameter having a specific surface of 0.03 m2 / g in which the metals were in solid solution. From the purity point of view, these alloys had for composition: oxygen: 620 ppm carbon: ⁇ 10 ppm nitrogen: ⁇ 10 ppm chlorine: ⁇ 50 ppm iron: ⁇ 20 ppm chromium: ⁇ 10 ppm nickel: ⁇ 10 ppm. or a purity (Zr + Hf) greater than 99.9%.
- the invention finds its application in obtaining alloys of refractory metals of very high purity having very good homogeneity on the microscopic scale.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electrolytic Production Of Metals (AREA)
- Manufacture And Refinement Of Metals (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9206233 | 1992-05-12 | ||
FR929206233A FR2691169B1 (fr) | 1992-05-12 | 1992-05-12 | Alliages de metaux refractaires aptes a la transformation en lingots homogenes et purs et procedes d'obtention des dits alliages. |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0570308A1 true EP0570308A1 (de) | 1993-11-18 |
EP0570308B1 EP0570308B1 (de) | 1996-12-27 |
Family
ID=9430049
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP93420192A Expired - Lifetime EP0570308B1 (de) | 1992-05-12 | 1993-05-11 | Legierungen aus Metall mit hohen Schmelzpunkten geeignet für die Umwandlung in homogene und rein Blöcke, und Herstellungsverfahren dieser Legierungen |
Country Status (7)
Country | Link |
---|---|
US (1) | US5372659A (de) |
EP (1) | EP0570308B1 (de) |
JP (1) | JP2863058B2 (de) |
AT (1) | ATE146828T1 (de) |
BR (1) | BR9301808A (de) |
DE (1) | DE69306853T2 (de) |
FR (1) | FR2691169B1 (de) |
Cited By (1)
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CN103160863A (zh) * | 2013-03-25 | 2013-06-19 | 上海大学 | 一种铌精矿熔融氧化物电解制备铌铁合金的方法 |
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JP3582437B2 (ja) * | 1999-12-24 | 2004-10-27 | 株式会社村田製作所 | 薄膜製造方法及びそれに用いる薄膜製造装置 |
US20030227068A1 (en) * | 2001-05-31 | 2003-12-11 | Jianxing Li | Sputtering target |
US6833058B1 (en) * | 2000-10-24 | 2004-12-21 | Honeywell International Inc. | Titanium-based and zirconium-based mixed materials and sputtering targets |
US20040123920A1 (en) * | 2002-10-08 | 2004-07-01 | Thomas Michael E. | Homogenous solid solution alloys for sputter-deposited thin films |
US9244097B1 (en) | 2007-09-07 | 2016-01-26 | Robert A. Freitas, JR. | Mechanosynthetic tools for a atomic-scale fabrication |
US8171568B2 (en) | 2007-09-07 | 2012-05-01 | Freitas Robert A | Positional diamondoid mechanosynthesis |
US10308514B2 (en) | 2007-09-07 | 2019-06-04 | Cbn Nano Technologies Inc. | Systems and methods for the manufacture of atomically-precise products |
US20130178627A1 (en) | 2011-07-21 | 2013-07-11 | Robert A. Freitas, JR. | Methods, Systems and Workpieces Using Mechanosynthesis |
CN101994045B (zh) * | 2010-12-10 | 2012-07-11 | 西南铝业(集团)有限责任公司 | 一种铝锆中间合金的制备方法 |
CN102268620A (zh) * | 2011-08-01 | 2011-12-07 | 南昌大学 | 一种Al3Ti颗粒增强Al-Zn-Mg-Cu基铝合金的固溶处理方法 |
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CN102268621B (zh) * | 2011-09-09 | 2013-03-20 | 西南铝业(集团)有限责任公司 | 一种铝合金棒材生产方法 |
CN102409270A (zh) * | 2011-11-07 | 2012-04-11 | 内蒙古北方重工业集团有限公司 | 一种大型铝合金环件轧制和电炉固溶处理方法 |
US10197597B2 (en) | 2013-02-28 | 2019-02-05 | Cbn Nano Technologies Inc. | Build sequences for mechanosynthesis |
US9676677B2 (en) | 2013-02-28 | 2017-06-13 | Robert A. Freitas, JR. | Build sequences for mechanosynthesis |
CN104451317A (zh) * | 2013-09-22 | 2015-03-25 | 北京有色金属研究总院 | 一种铪基混合金属材料及其碘化制备方法 |
US11708384B2 (en) | 2016-05-12 | 2023-07-25 | Cbn Nano Technologies Inc. | Systems and methods for mechanosynthesis |
US10072031B1 (en) | 2016-05-12 | 2018-09-11 | CBN Nano Technologies, Inc. | Systems and methods for mechanosynthesis |
US10067160B2 (en) | 2016-11-16 | 2018-09-04 | CBN Nano Technologies, Inc. | Sequential tip systems and methods for positionally controlled chemistry |
US10822229B2 (en) | 2016-11-16 | 2020-11-03 | Cbn Nano Technologies Inc. | Systems and methods for mechanosynthesis |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1077878B (de) * | 1952-10-04 | 1960-03-17 | Norton Ges M B H Deutsche | Verfahren zur Herstellung von Zirkonium, Hafnium oder von Gemischen dieser Metalle durch Schmelzflusselektrolyse |
FR1216255A (fr) * | 1957-03-20 | 1960-04-25 | Internat Metallurg Corp | Perfectionnements à l'obtention de métaux polyvalents |
DE1226311B (de) * | 1963-02-18 | 1966-10-06 | Union Carbide Corp | Verfahren zum elektrolytischen Abscheiden von Zirkonium, Hafnium, Vanadium, Niob, Tantal, Chrom, Molybdaen oder Wolfram oder ihrer Legierungen |
FR1565784A (de) * | 1967-04-12 | 1969-05-02 | ||
US3637374A (en) * | 1968-05-27 | 1972-01-25 | Fansteel Metallurgical Corp | Method of producing tungsten rhenium alloys by chemical vapor deposition |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2985531A (en) * | 1959-06-05 | 1961-05-23 | Univ Ohio State Res Found | Niobium-zirconium base alloy |
GB1095925A (en) * | 1965-12-02 | 1967-12-20 | Imp Metal Ind Kynoch Ltd | Hafnium alloys |
JPS6052538A (ja) * | 1983-08-31 | 1985-03-25 | Sumitomo Metal Ind Ltd | Ζr基Νb合金の溶解法 |
FR2579629B1 (fr) * | 1985-03-28 | 1987-05-07 | Pechiney | Procede de controle en continu de la teneur en metal dissous dans un bain de sels fondus et son application a l'alimentation continue d'une cellule d'electrolyse en sels dudit metal |
FR2634938B1 (fr) * | 1988-07-28 | 1990-09-21 | Cezus Co Europ Zirconium | Procede de fabrication d'un element metallique absorbeur de neutrons et element obtenu |
FR2643653B1 (fr) * | 1989-02-28 | 1991-05-03 | Cezus Co Europ Zirconium | Diaphragme pour electrolyse en bain de sels fondus d'halogenures de metaux |
DE68916235T2 (de) * | 1989-05-08 | 1995-01-19 | Sumitomo Metal Ind | Legierung auf Zirkon-Basis mit erhöhter Beständigkeit gegen Korrosion durch Salpetersäure und mit guter Kriechbeständigkeit. |
FR2653139B1 (fr) * | 1989-10-17 | 1991-12-13 | Cezus Co Europ Zirconium | Procede et dispositif d'introduction d'au moins un halogenure a l'etat liquide ou gazeux dans le bain d'une cellule d'electrolyse ignee. |
-
1992
- 1992-05-12 FR FR929206233A patent/FR2691169B1/fr not_active Expired - Fee Related
-
1993
- 1993-05-11 AT AT93420192T patent/ATE146828T1/de not_active IP Right Cessation
- 1993-05-11 EP EP93420192A patent/EP0570308B1/de not_active Expired - Lifetime
- 1993-05-11 US US08/059,287 patent/US5372659A/en not_active Expired - Fee Related
- 1993-05-11 BR BR939301808A patent/BR9301808A/pt not_active IP Right Cessation
- 1993-05-11 DE DE69306853T patent/DE69306853T2/de not_active Expired - Fee Related
- 1993-05-12 JP JP5110465A patent/JP2863058B2/ja not_active Expired - Lifetime
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DE1077878B (de) * | 1952-10-04 | 1960-03-17 | Norton Ges M B H Deutsche | Verfahren zur Herstellung von Zirkonium, Hafnium oder von Gemischen dieser Metalle durch Schmelzflusselektrolyse |
FR1216255A (fr) * | 1957-03-20 | 1960-04-25 | Internat Metallurg Corp | Perfectionnements à l'obtention de métaux polyvalents |
DE1226311B (de) * | 1963-02-18 | 1966-10-06 | Union Carbide Corp | Verfahren zum elektrolytischen Abscheiden von Zirkonium, Hafnium, Vanadium, Niob, Tantal, Chrom, Molybdaen oder Wolfram oder ihrer Legierungen |
FR1565784A (de) * | 1967-04-12 | 1969-05-02 | ||
US3637374A (en) * | 1968-05-27 | 1972-01-25 | Fansteel Metallurgical Corp | Method of producing tungsten rhenium alloys by chemical vapor deposition |
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CHEMICAL ABSTRACTS, vol. 86, no. 8, 21 Février 1977, Columbus, Ohio, US; abstract no. 48583, '"Alloys by electrolysis"' page 336 ;colonne 1 ; * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103160863A (zh) * | 2013-03-25 | 2013-06-19 | 上海大学 | 一种铌精矿熔融氧化物电解制备铌铁合金的方法 |
CN103160863B (zh) * | 2013-03-25 | 2016-01-20 | 上海大学 | 一种铌精矿熔融氧化物电解制备铌铁合金的方法 |
Also Published As
Publication number | Publication date |
---|---|
US5372659A (en) | 1994-12-13 |
ATE146828T1 (de) | 1997-01-15 |
FR2691169B1 (fr) | 1994-07-01 |
BR9301808A (pt) | 1994-03-01 |
FR2691169A1 (fr) | 1993-11-19 |
DE69306853T2 (de) | 1997-05-07 |
JPH0633161A (ja) | 1994-02-08 |
JP2863058B2 (ja) | 1999-03-03 |
EP0570308B1 (de) | 1996-12-27 |
DE69306853D1 (de) | 1997-02-06 |
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