BE370887A - - Google Patents
Info
- Publication number
- BE370887A BE370887A BE370887DA BE370887A BE 370887 A BE370887 A BE 370887A BE 370887D A BE370887D A BE 370887DA BE 370887 A BE370887 A BE 370887A
- Authority
- BE
- Belgium
- Prior art keywords
- metal
- objects
- zinc
- vapor
- vacuum
- Prior art date
Links
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 5
- 229910052725 zinc Inorganic materials 0.000 description 5
- 239000011701 zinc Substances 0.000 description 5
- 125000004429 atoms Chemical group 0.000 description 4
- 238000009834 vaporization Methods 0.000 description 3
- 229910001369 Brass Inorganic materials 0.000 description 2
- 239000010951 brass Substances 0.000 description 2
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 2
- 229910052753 mercury Inorganic materials 0.000 description 2
- 238000009835 boiling Methods 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000001465 metallisation Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000000859 sublimation 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
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
- C23C14/14—Metallic material, boron or silicon
- C23C14/20—Metallic material, boron or silicon on organic substrates
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physical Vapour Deposition (AREA)
Description
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" Procédé pour métalliser par vaporisation de métal, des objets d'origine organique ".
On ne pouvait jusqu' à présent produire sans faire sas- ge de couches intermédiaires, des couches métalliques bril- lantes, sur des objets d'origine organique, qu'à l'aide de pulvérisation d'électrodes, dans le vide. Cette méthode qui est exécutable du point de vue technique, est imparfai- te au point de vue économique industriel, par suite de la longue durée de la métallisation, par suite du très faible rendement du courant, et de plus, par suite des difficultés provenant de la facile oxydation des métaux non précieux.
On a trouvé maintenant, que des objets organiques peu- vent être recouverts de métal ttès rapidement et avec un ren- dement d'énergie très élevé, lorsqu'on les expose à la va- peur atomaire du métal à déposer. La vaporisation du métal est faite de préférence dans le vide élevé, afin de mainte- nir aussi bas que possible le point d'ébullition ou de subli- mation et afin d'obtenir de plus une vapeur constituée par des/particales les plus petites possible c.à.d. une vapeur Constituée d'atomes.
Avec an vide moins élevé ce résultat n'est pas atteint, parce que la trajectoire libre moyenne des atomes devient trop petite et qu'il se présente le dan-
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ger que les atomes se rencontrent sur leur chemin et se réa- nissent en complexes plus grossiers. Un dépôt métallique brillant ne se produit que lorsque le métal se dépose sous forme d'atomes. Pour autant qu'il s'agisse de produire des coaches métalliques plus épaisses, sans qu'il soit nécessai- re d'avoir une surface brillante, on peut travailler avec un vide plus faible ou avec une température de vaporisation plas élevée.
Exemple 1 : Dans un vase à vide, dans le quel règne une pression absolue de 0,1 mm. de mercure, on fond du cadmium à l'aide d'éléments chauffants dlectriques et la vapeur méta liqae est conduite sur l'objet à métalliser.
Exemple 2 : Dans an vase à vide on fond du zinc, sous une pression absolue de 0,02 mm. de mercure et la vapeur de zinc produite est conduite sur l'objet à recouvrir de zinc.
Exemple 3: Dans un vese à vide on chauffe, par effet Joule, un fil de laiton jusqu'environ 500 , le zinc -plus volatil $tant ainsi vaporisé hors du laiton. Les vapears de zinc sont conduites comme ci-dessus sur l'objet à métalli- ser.
Selon ce procédé on parvient par ex. à rendre des pa- piers conducteurs de l'électricité et ce, en an temps extrg- mement court. Pour obtenir une couche métallique conductrice brillante sur du papier, il suffit d'exposer celai-ci de 1 à 3 secondes aax vapeurs métalliqaes.
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"Process for metallizing by vaporization of metal, objects of organic origin".
Up to now, shiny metallic layers could only be produced on objects of organic origin without the sealing of intermediate layers, except by spraying electrodes in a vacuum. This method, which can be carried out from the technical point of view, is imperfect from the industrial economic point of view, owing to the long duration of the metallization, owing to the very low efficiency of the current, and moreover, owing to the difficulties arising from easy oxidation of non-precious metals.
It has now been found that organic objects can be coated with metal very quickly and with a very high energy yield, when exposed to the atomic vapor of the metal to be deposited. The vaporization of the metal is preferably carried out in a high vacuum, in order to keep the boiling or sublimation point as low as possible and in order to obtain moreover a vapor consisting of the smallest possible particles. i.e. a vapor Made up of atoms.
With a lower vacuum this result is not achieved, because the average free trajectory of the atoms becomes too small and there is a danger of
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manage that atoms meet on their way and reorganize into coarser complexes. A shiny metallic deposition only occurs when the metal is deposited in the form of atoms. As long as it is a question of producing thicker metal coaches, without it being necessary to have a shiny surface, it is possible to work with a lower vacuum or with a higher vaporization temperature.
Example 1: In a vacuum vessel, in which there is an absolute pressure of 0.1 mm. of mercury, cadmium is melted using electric heating elements and the metallized vapor is conducted on the object to be metallized.
Example 2: Zinc is melted in a vacuum vessel under an absolute pressure of 0.02 mm. of mercury and the zinc vapor produced is conducted over the object to be coated with zinc.
Example 3: In a vacuum vessel, a brass wire is heated by the Joule effect up to approximately 500, the more volatile zinc thus vaporized out of the brass. Zinc vapears are conducted as above on the object to be metallized.
By this method one obtains eg. to make paper conductors of electricity in an extremely short time. To obtain a shiny conductive metallic layer on paper, it suffices to expose the latter for 1 to 3 seconds to aax metallic vapors.
Claims (1)
Publications (1)
Publication Number | Publication Date |
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BE370887A true BE370887A (en) |
Family
ID=42271
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BE370887D BE370887A (en) |
Country Status (1)
Country | Link |
---|---|
BE (1) | BE370887A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0037235A2 (en) * | 1980-03-25 | 1981-10-07 | Ex-Cell-O Corporation | An article of manufacture, such as an automobile trim component, comprising a dielectric substrate with a surface coating of metal and a process of manufacturing same |
-
0
- BE BE370887D patent/BE370887A/fr unknown
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0037235A2 (en) * | 1980-03-25 | 1981-10-07 | Ex-Cell-O Corporation | An article of manufacture, such as an automobile trim component, comprising a dielectric substrate with a surface coating of metal and a process of manufacturing same |
EP0037235A3 (en) * | 1980-03-25 | 1982-04-14 | Ex-Cell-O Corporation | An article of manufacture, such as an automobile trim component, comprising a dielectric substrate with a surface coating of metal and a process of manufacturing same |
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