EP0129491B1 - Trockenpassivierverfahren für zerteiltes Magnesium - Google Patents
Trockenpassivierverfahren für zerteiltes Magnesium Download PDFInfo
- Publication number
- EP0129491B1 EP0129491B1 EP84420104A EP84420104A EP0129491B1 EP 0129491 B1 EP0129491 B1 EP 0129491B1 EP 84420104 A EP84420104 A EP 84420104A EP 84420104 A EP84420104 A EP 84420104A EP 0129491 B1 EP0129491 B1 EP 0129491B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- dry
- atmosphere
- magnesium
- process according
- passivation process
- 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.)
- Expired
Links
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 title claims abstract description 34
- 239000011777 magnesium Substances 0.000 title claims abstract description 23
- 229910052749 magnesium Inorganic materials 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000002161 passivation Methods 0.000 claims abstract description 20
- 239000003112 inhibitor Substances 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 10
- 239000011701 zinc Substances 0.000 claims abstract description 10
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 9
- XTEGARKTQYYJKE-UHFFFAOYSA-M Chlorate Chemical compound [O-]Cl(=O)=O XTEGARKTQYYJKE-UHFFFAOYSA-M 0.000 claims abstract description 8
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 claims abstract description 7
- 230000007797 corrosion Effects 0.000 claims abstract description 6
- 238000005260 corrosion Methods 0.000 claims abstract description 6
- 229910000861 Mg alloy Inorganic materials 0.000 claims abstract description 5
- DWYMPOCYEZONEA-UHFFFAOYSA-L fluoridophosphate Chemical compound [O-]P([O-])(F)=O DWYMPOCYEZONEA-UHFFFAOYSA-L 0.000 claims abstract description 5
- 229910019142 PO4 Inorganic materials 0.000 claims abstract description 4
- 150000001450 anions Chemical class 0.000 claims abstract description 4
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 claims abstract description 4
- 150000001642 boronic acid derivatives Chemical class 0.000 claims abstract description 4
- 229910052793 cadmium Inorganic materials 0.000 claims abstract description 4
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 claims abstract description 4
- 150000001768 cations Chemical class 0.000 claims abstract description 4
- SOCTUWSJJQCPFX-UHFFFAOYSA-N dichromate(2-) Chemical compound [O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O SOCTUWSJJQCPFX-UHFFFAOYSA-N 0.000 claims abstract description 4
- VLTRZXGMWDSKGL-UHFFFAOYSA-M perchlorate Inorganic materials [O-]Cl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-M 0.000 claims abstract description 4
- VLTRZXGMWDSKGL-UHFFFAOYSA-N perchloric acid Chemical compound OCl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-N 0.000 claims abstract description 4
- 235000021317 phosphate Nutrition 0.000 claims abstract description 4
- 150000003013 phosphoric acid derivatives Chemical class 0.000 claims abstract description 4
- LSGOVYNHVSXFFJ-UHFFFAOYSA-N vanadate(3-) Chemical class [O-][V]([O-])([O-])=O LSGOVYNHVSXFFJ-UHFFFAOYSA-N 0.000 claims abstract description 4
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 claims abstract description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 3
- 229910052788 barium Inorganic materials 0.000 claims abstract description 3
- 150000001875 compounds Chemical class 0.000 claims abstract description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 3
- 239000007788 liquid Substances 0.000 claims abstract description 3
- 239000011707 mineral Substances 0.000 claims abstract description 3
- -1 permanganate Chemical compound 0.000 claims abstract description 3
- 229920006395 saturated elastomer Polymers 0.000 claims abstract 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 14
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 12
- 239000000843 powder Substances 0.000 claims description 11
- 239000007789 gas Substances 0.000 claims description 8
- 238000013019 agitation Methods 0.000 claims description 7
- 229910052786 argon Inorganic materials 0.000 claims description 7
- 229910052757 nitrogen Inorganic materials 0.000 claims description 5
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- NDKWCCLKSWNDBG-UHFFFAOYSA-N zinc;dioxido(dioxo)chromium Chemical compound [Zn+2].[O-][Cr]([O-])(=O)=O NDKWCCLKSWNDBG-UHFFFAOYSA-N 0.000 description 5
- 239000004115 Sodium Silicate Substances 0.000 description 4
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 4
- 229910052911 sodium silicate Inorganic materials 0.000 description 4
- 239000000395 magnesium oxide Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001033 granulometry Methods 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- KMUONIBRACKNSN-UHFFFAOYSA-N potassium dichromate Chemical compound [K+].[K+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O KMUONIBRACKNSN-UHFFFAOYSA-N 0.000 description 2
- 230000000750 progressive effect Effects 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- SSFRJJARVXKYME-UHFFFAOYSA-L zinc;fluoro-dioxido-oxo-$l^{5}-phosphane Chemical compound [Zn+2].[O-]P([O-])(F)=O SSFRJJARVXKYME-UHFFFAOYSA-L 0.000 description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 238000004833 X-ray photoelectron spectroscopy Methods 0.000 description 1
- VVTSZOCINPYFDP-UHFFFAOYSA-N [O].[Ar] Chemical compound [O].[Ar] VVTSZOCINPYFDP-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 235000021183 entrée Nutrition 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- ALTWGIIQPLQAAM-UHFFFAOYSA-N metavanadate Chemical compound [O-][V](=O)=O ALTWGIIQPLQAAM-UHFFFAOYSA-N 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 238000004626 scanning electron microscopy Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 238000005211 surface analysis Methods 0.000 description 1
- 238000005494 tarnishing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
- C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
- C23F11/18—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids using inorganic inhibitors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/14—Treatment of metallic powder
- B22F1/145—Chemical treatment, e.g. passivation or decarburisation
Definitions
- the object of the present invention is a dry passivation process for magnesium and magnesium alloys in the divided state, which is carried out by simple intimate contact of the divided magnesium to be passivated and an inhibitor of powdery corrosion.
- a powder with a particle size of 100 to 200 micrometers gives rise, under these conditions, to the evolution of hydrogen from 1000 to 4000 Ncm3.
- Zinc fluorophosphate in the same proportions, leads to almost identical results.
- the protective layer thus formed can be clearly differentiated from the layers obtained by the dipping processes. This differentiation is based on morphology, on chemical composition (for example, presence of Cr, Zn or V), determined using conventional surface analysis techniques such as scanning electron microscopy, spectrography ESCA or AUGER, or ion analysis.
Landscapes
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Metallurgy (AREA)
- General Chemical & Material Sciences (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
- Chemical Treatment Of Metals (AREA)
- Inorganic Insulating Materials (AREA)
- Formation Of Insulating Films (AREA)
- Battery Electrode And Active Subsutance (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Claims (8)
1. Verfahren zur Trockenpassivierung von Magnesium oder Magnesiumlegierung im zerteilten Zustand, dadurch gekennzeichnet, daß das Magnesium oder die Magnesiumlegierung in innigen Kontakt mit einem Korrosionsinhibitor im fein pulverisierten Zustand gebracht wird, der aus einer mineralischen Verbindung besteht, deren Kation unter Zink, Cadmium, Barium, Blei und Zinn gewählt wird und deren Anion unter dem Chromat, dem Bichromat, dem Permanganat, dem Chlorat, dem Perchlorat, den Vanadaten, den Phospaten, dem Fluorophosphat, dem Fluorid und den Boraten gewählt wird, und daß das Bringen in Kontakt in drei aufeinanderfolgenden Stufen vorgenommen wird: in trockener Atmosphäre, dann in mit Wasserdampf gesättigter Atmosphäre, jedoch in Abwesenheit von Wasser im flüssigen Zustand, und dann schließlich in trockener Atmosphäre.
2. Trockenpassivierungsverfahren nach Anspruch 1, dadurch gekennzeichnet, daß die anfängliche Phase des Bringens in Kontakt in trockener Atmosphäre eine Dauer im Bereich von 1 bis 15 Minuten hat.
3. Trockenpassivierungsverfahren nach Ansprüchen 1 oder 2, dadurch gekennzeichnet, daß die anfängliche Phase des Bringens in Kontakt in trockener Atmosphäre in Gegenwart von trockener Luft oder trockener ozonisierter Luft oder trockenem inaktivem Gas, wie z.B. Stickstoff oder Argon, durchgeführt wird.
4. Trockenpassivierungsverfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Phase des Bringens in Kontakt in feuchter Atmosphäre in Gegenwart von mit Wasserdampf gesättigter(m) Luft oder inaktivem Gas, wie z.B. Stickstoff oder Argon, bei einer Temperatur im Bereich von 20 bis 80° C, vorzugsweise im Bereich von 50 bis 70° C, und vorzugsweise unter Rühren durchgeführt wird.
5. Trockenpassivierungsverfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Endphase des Bringens in Kontakt in trockener Atmosphäre in Gegenwart von trockener Luft oder trockener ozonisierter Luft oder inaktivem Gas, wie z.B. Stickstoff oder Argon, bei einer 100° C nicht übersteigenden Temperatur durchgeführt wird.
6. Trockenpassivierungsverfahren nach Anspruch 1, dadurch gekennzeichnet, daß der Inhibitor im Zustand von Pulver eingeführt wird, das völlig das Sieb mit Maschenweite von 40 gm passiert.
7. Trockenpassivierungsverfahren nach Anspruch 1, dadurch gekennzeichnet, daß der Inhibitor in einem Anteil im Bereich von 0,01 bis 1%. vorzugsweise von 0,05 bis 0,2 Gew. % im Verhältnis zum zu passivierenden Magnesium eingeführt wird.
8. Trockenpassivierungsverfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Dauer jeder der drei Phasen (trockene Atmosphäre, feuchte Atmosphäre, trockene Atmosphäre) im Bereich von 1 bis 15 Minuten ist.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT84420104T ATE24853T1 (de) | 1983-06-21 | 1984-06-19 | Trockenpassivierverfahren fuer zerteiltes magnesium. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8310610 | 1983-06-21 | ||
| FR8310610A FR2549086B1 (fr) | 1983-06-21 | 1983-06-21 | Procede de passivation a sec de magnesium a l'etat divise |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0129491A1 EP0129491A1 (de) | 1984-12-27 |
| EP0129491B1 true EP0129491B1 (de) | 1987-01-14 |
Family
ID=9290212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP84420104A Expired EP0129491B1 (de) | 1983-06-21 | 1984-06-19 | Trockenpassivierverfahren für zerteiltes Magnesium |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0129491B1 (de) |
| AT (1) | ATE24853T1 (de) |
| DE (1) | DE3461992D1 (de) |
| FR (1) | FR2549086B1 (de) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU599415B2 (en) * | 1987-08-31 | 1990-07-19 | Nippon Paint Co., Ltd. | Metal particle |
| DE3908815A1 (de) * | 1989-03-17 | 1990-09-20 | Sueddeutsche Kalkstickstoff | Verfahren zur passivierung von pyrophoren metallen |
| US20130014670A1 (en) * | 2010-04-01 | 2013-01-17 | Commissariat a I'Energie Atomique et Aux Energies Altematives | Use of anticorrosion agents for conditioning magnesium metal, conditioning material thus obtained and preparation process |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB562469A (en) * | 1942-12-21 | 1944-07-03 | Charles Georges Six | A process for the production of light metal powders |
| GB700694A (en) * | 1950-03-10 | 1953-12-09 | Nitroglycerin Ab | Method of inhibiting aluminium powder from reacting with water |
| FR1270661A (fr) * | 1960-07-21 | 1961-09-01 | Commissariat Energie Atomique | Nouveau procédé pour la préparation de masses à base de poudre de magnésium comprimée |
| FR1292322A (fr) * | 1961-03-03 | 1962-05-04 | Commissariat Energie Atomique | Procédé de préparation de masses à base de poudre de magnésium fluorée et comprimée |
| DE1294139B (de) * | 1962-12-13 | 1969-04-30 | Walter Marx & Co Kg | Verfahren zur chemischen Oxydation von pulverfoermigem Aluminium bzw. Magnesium sowie Legierungen der genannten Metalle |
| FR2352895A1 (fr) * | 1976-04-21 | 1977-12-23 | Diversey France | Nouveau procede de traitement de surfaces metalliques au moyen de composes oxyfluores du phosphore 5 |
-
1983
- 1983-06-21 FR FR8310610A patent/FR2549086B1/fr not_active Expired
-
1984
- 1984-06-19 DE DE8484420104T patent/DE3461992D1/de not_active Expired
- 1984-06-19 EP EP84420104A patent/EP0129491B1/de not_active Expired
- 1984-06-19 AT AT84420104T patent/ATE24853T1/de not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| DE3461992D1 (en) | 1987-02-19 |
| ATE24853T1 (de) | 1987-01-15 |
| FR2549086A1 (fr) | 1985-01-18 |
| EP0129491A1 (de) | 1984-12-27 |
| FR2549086B1 (fr) | 1987-02-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2966191A1 (de) | Pulvermischungszusammensetzung zur durch thermodiffusion erfolgenden galvanisierung von artikeln aus aluminiumlegierungen und verfahren zur durch thermodiffusion erfolgenden galvanisierung von artikeln aus aluminiumlegierungen | |
| US20110200481A1 (en) | WATER-COLLAPSIBLE Al COMPOSITE MATERIAL, Al FILM AND Al POWDER CONSISTING OF THIS MATERIAL, AND METHODS FOR PREPARATION THEREOF, AS WELL AS COMPONENT MEMBERS FOR CONSTITUTING FILM-FORMING CHAMBERS AND METHOD FOR THE RECOVERY OF FILM-FORMING MATERIALS | |
| JP3913284B2 (ja) | 金属材料を硬ろう付けする方法、フラックス懸濁液、フラックス、およびフラックスの製造方法 | |
| US20130145961A1 (en) | Water-reactive al-based composite material, water-reactive al-based thermally sprayed film, process for production of such al-based thermally sprayed film, and constituent member for film-forming chamber | |
| JPH0394074A (ja) | 金属面へのコーテイング付与用改良組成物および付与方法 | |
| EP0129491B1 (de) | Trockenpassivierverfahren für zerteiltes Magnesium | |
| US5885369A (en) | Solder powder, method for making the solder powder and solder paste using the solder powder | |
| US2200743A (en) | Method of making a composition of phosphorus and metal | |
| EP0667401B1 (de) | Zusammensetzung von Schmelzbädern auf der Basis von Alkalimetallnitraten zum Oxydieren von Eisenmetalle zur Verbesserung dessen Korrosionsbeständigkeit | |
| JPS6354787B2 (de) | ||
| KR101249590B1 (ko) | 수 반응성 Ａｌ 복합 재료, 수 반응성 Ａｌ 막, 이 Ａｌ 막의 제조 방법, 및 성막실용 구성 부재 | |
| JPH0689423B2 (ja) | 耐食性の優れたチタン合金 | |
| US5139704A (en) | Fluxless solder | |
| US2825793A (en) | Welding rod and method of welding | |
| EP0946407B1 (de) | Vorrichtung und verfahren zum speichern, transportieren und herstellen von aktivem fluor | |
| KR20100136558A (ko) | 수 반응성 Ａｌ 복합 재료, 수 반응성 Ａｌ 막, 이 Ａｌ 막의 제조 방법, 및 성막실용 구성 부재 | |
| CN1195479A (zh) | 柿子脱涩保鲜剂 | |
| RU2559386C1 (ru) | Состав порошковой смеси для термодиффузионного цинкования изделий из магниевых сплавов и способ термодиффузионного цинкования изделий из магниевых сплавов | |
| JP3428915B2 (ja) | 粉末冶金用混合粉、粉末冶金焼結体及びその製造方法 | |
| HU176794B (en) | Process for producing alloy of aluminium of high reducing activity,containing discontinual heterodisperz alloy on the surface | |
| US1161944A (en) | Process of forming a protective metal coating upon metallic articles. | |
| BE560483A (de) | ||
| JP3943718B2 (ja) | ハンダ粉の製造方法、ハンダ粉及びハンダペースト | |
| US295256A (en) | Colvipound for coating metal | |
| US4975323A (en) | Ferrophosphorus particles treated with hypophosphorous acid |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Designated state(s): AT BE CH DE GB IT LI LU NL SE |
|
| 17P | Request for examination filed |
Effective date: 19850808 |
|
| 17Q | First examination report despatched |
Effective date: 19860514 |
|
| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: PECHINEY ELECTROMETALLURGIE |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE CH DE GB IT LI LU NL SE |
|
| REF | Corresponds to: |
Ref document number: 24853 Country of ref document: AT Date of ref document: 19870115 Kind code of ref document: T |
|
| ITF | It: translation for a ep patent filed | ||
| REF | Corresponds to: |
Ref document number: 3461992 Country of ref document: DE Date of ref document: 19870219 |
|
| PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
| 26N | No opposition filed | ||
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 19890630 Year of fee payment: 6 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Effective date: 19910101 |
|
| NLV4 | Nl: lapsed or anulled due to non-payment of the annual fee | ||
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 19920512 Year of fee payment: 9 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: SE Payment date: 19920515 Year of fee payment: 9 Ref country code: CH Payment date: 19920515 Year of fee payment: 9 Ref country code: AT Payment date: 19920515 Year of fee payment: 9 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 19920516 Year of fee payment: 9 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: BE Payment date: 19920526 Year of fee payment: 9 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: LU Payment date: 19920527 Year of fee payment: 9 |
|
| ITTA | It: last paid annual fee | ||
| EPTA | Lu: last paid annual fee | ||
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19930619 Ref country code: GB Effective date: 19930619 Ref country code: AT Effective date: 19930619 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Effective date: 19930620 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Effective date: 19930630 Ref country code: CH Effective date: 19930630 Ref country code: BE Effective date: 19930630 |
|
| BERE | Be: lapsed |
Owner name: PECHINEY ELECTROMETALLURGIE Effective date: 19930630 |
|
| GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 19930619 |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Effective date: 19940301 |
|
| EUG | Se: european patent has lapsed |
Ref document number: 84420104.6 Effective date: 19940110 |