CA2005560A1 - Anodised surface of an object with luminescence properties and process for producing the surface - Google Patents
Anodised surface of an object with luminescence properties and process for producing the surfaceInfo
- Publication number
- CA2005560A1 CA2005560A1 CA 2005560 CA2005560A CA2005560A1 CA 2005560 A1 CA2005560 A1 CA 2005560A1 CA 2005560 CA2005560 CA 2005560 CA 2005560 A CA2005560 A CA 2005560A CA 2005560 A1 CA2005560 A1 CA 2005560A1
- Authority
- CA
- Canada
- Prior art keywords
- process according
- luminescent substance
- deposition
- oxide layer
- coloring
- 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.)
- Abandoned
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/04—Anodisation of aluminium or alloys based thereon
- C25D11/18—After-treatment, e.g. pore-sealing
- C25D11/20—Electrolytic after-treatment
- C25D11/22—Electrolytic after-treatment for colouring layers
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/04—Anodisation of aluminium or alloys based thereon
- C25D11/18—After-treatment, e.g. pore-sealing
- C25D11/24—Chemical after-treatment
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
The market, in particular consumer goods market, has a demand for decorative surfaces on aluminum or aluminum alloy items having luminescence properties along with high-grade functional protection offered by the metal surface against harmful effects of a chemical or mechanical nature such as, for example, corrosion or wear. This demand is satisfied by depositing at least one substance exhibiting luminescence (luminescent substance) in the pores in the oxide. The deposition of the luminescent substance takes place adsorptively by immersion in an aqueous or organic solution of the luminescent substance in question or by electrolytic deposition of an ionically charged luminescent substance via application of an electric potential.
The market, in particular consumer goods market, has a demand for decorative surfaces on aluminum or aluminum alloy items having luminescence properties along with high-grade functional protection offered by the metal surface against harmful effects of a chemical or mechanical nature such as, for example, corrosion or wear. This demand is satisfied by depositing at least one substance exhibiting luminescence (luminescent substance) in the pores in the oxide. The deposition of the luminescent substance takes place adsorptively by immersion in an aqueous or organic solution of the luminescent substance in question or by electrolytic deposition of an ionically charged luminescent substance via application of an electric potential.
Description
~' Z1~5S60 l 89-410 .:' ~, i BACKGROUND OF THE INVENTION
`;, The invention relates to the surface of an object . ., made of aluminum or an aluminum alloy, said surface -~ having an oxide layer produc~ed by anodizing.
, It is known to color it~ems by deposition of a , colored layer on the surface, for example by painting or immersing the item in the coloring agent. Also known is coloring by means of anodizing and electrolytic coloring of the resultant oxide layer in a metal salt electrolyte or by immersion in a solution of organic colorant (adsorptive colorant). The last mentioned method ,l normally takes place without the application of electric ~'!
'~ current.
~l By luminescence here and in the following is meant i~ the transformation of any form of energy into light, in ,, particular f]uorescence where the duration of resultant light radiation i8 relatively long.
The market, in particular the consumer goods ` market, has a demand for decorative surfaces on items of aluminum or aluminum alloys having luminescence properties at the same time the metal surface offering a high degree of functional protection against harmful `.~5 effects of a chemical or mechanical nature such as, for J, example, corrosion or wear. Items requiring such ;i surface properties are for example jewelry, watch `~ housings and hands, sports articles or toys.
~ .
~$
~i ;i6~
... , .. - -. .:.
j, 8~-410 " SUMMARY OF THE INVENTION
"'~ The object of the present invention is to meet this need and to influence the surface of items made of ~ aluminum or aluminum alloys and having an oxide layer '~! made by anodizing in such a way that this exhibits ,iJ
',1 luminescence properties, and to provide a process for manufacturing such items.
' This object is achieved by way of the present ~ invention in accordance with which at least one i! substance with luminescence properties is deposited in '; the pores of an oxide layer on the surface of an item of aluminum or an aluminum alloy wherein the oxide layer is produced by anodizing. A process according to the invention for producing such a surface is characterized by p~oviding that the de~osition of the luminescent substance taXes place by adsorption by means of immersion in an aqueous or organic solution of the luminescent substance in question. Vseful further developments of the process according to the present ';,1 invention are characterized by providing that the ..~
deposition of an ionically charged fluorescent or phosphorescent substance takes place electrolytically by `j application of an electric potential. In addition, the .
i, oxide surface produced by anodizing may be colored by adsorptive coloring with a non-luminescent colorant . ~
~ .
i _ 3 _ ~ t ::
~ j ,,: , ;2!1DC~5ior~6~
: `
, 89-410 before or after deposition of the luminescent `/ substance. In addition, the oxide surface produced by ",!' anodizing may be colored by electrolytic treatment in a ~, solution containing at least one meta] salt, this before ,., :~
or after deposition of the luminescent substance, ,~
wherein at least one salt of tin, nickel, cobalt or copper may be employed. The deposition of the , ., ;, luminescent substance by adsorption by means of .~ il .
l immersion in an aqueous or organic solution of the .. . .
~` luminescent substance may take place at the same time as .~';!
the deposition of at least one conventional organic colorant in a bath of suitable mixture. In the i ~
deposition of an ionically charged fluorescent or phosphorescent substance electrolytically by application of electric potential, the electrolytic coloring and the ~ deposition of the luminescent substance may take place ;i~ at the same time in a bath of suitable mixture ~ containing at least one metal salt as above. The : t I
;~ aluminum or aluminum alloy surface may be mechanically polished, or chemically or electrolytically brightened ,.,i.,l ~ before anodizing, or combinations of these.
,,.. ~ :
.~' Items benefiting particularly from the surface ~ according to the invention produced by the process `:"j , .
:~.
;~
;:
.,. ~
t. ~` -4-!,. :"
. j .; ~ :` ..... . -,idj . 2 [)~)5S6~3 ':~
~ according to the invention are such from the watch and , .~
clock making industry, preferably housings and hands as "ij~ in this consumer goods industry there is a particularly ,~J~ strong demand for new and decorative finishes.
~ To achieve greater brilliance in the luminescent `~ oxide layer, it is advantageous to use items made of an '',J, aluminum alloy of high purity. Particularly suitable is . :~
an alloy h~ving an aluminum content of at least 99.5%.
If a particularly intensive luminescent surface is desired, it has been found useful to create a greater reservoir for depositing the luminescent substance and, if desired, the accompanying colorant. A larger reservoir is achieved by way of the process aecording to the present invention by providing that before the deposition of the luminescent substance and if desired a colorant, the pore volume in the oxide layer is enlarged by holding in the electrolyte without applying the electric current or by partial dissolution of the oxide layer under the action of an alternating current.
."i.;3 ~ It has been found that after deposition, the :.5 ~ luminescent substance and if desired the added colorant ; ,t or colorants, bleeds out of the pores i.e., partially and without intention the colorant or colorants comes out of the pores again, which results in a reduction in the intensity of luminescence and if applicable also . .
: ..
'~
, ~:, .. . .. .
2~055;~E~0 i . , , color. To prevent this undesirable effect, the process ....
-~ according to the present inv,ention can be performed by :i;
providing that the oxide lay~er is sealed in a bath containing nickel and fluoride after deposition of the luminescent substance and, if desired, colorant. The process of the present invention can also be performed , by providing that after anodizing and coloring with a ~:
luminescent substance and if desired colorant the oxide layer is presealed in a first bath containing nickel and . :`t ~ fluoride, and then sealed in a second conventional ~
~ I
~!j' sealing bath, the second bath having a higher i~
te~perature than the first bath.
The surface according to the invention or the ,~
~ surfaces produced by the process according to the invention glow (fluoresce) under the action of ,1 ~! ultra-violet light when fluorescent-luminescent substances have been embedded in the said surfaces.
~1 This effect can be used for example in discotheques with UV bea~s to illuminate jewelry or watches having suxfaces treated according to the invention or for . ,, advertising purposes in that for example shop windows or ;
~I display cases with built-in UV sources illuminate aluminum axticles having surfaces treated according to the invention so that these glow in the twilight or at night and draw the attention of passers-by.
1~? ,.
... .
'.:, ~, -6-*` 2005561~
`.;,.! ' `
.`,~:.,i :. !
Surface~ according to the invention treated with phofiphorescent substances are lumine~cent (phosphorescent) also in the dark after having been illuminated by daylight or artificial light. These can be used for example for the surface treatment of toys, sports articles or the like in order to make it easier to find these in the dark, or for watches and clocks to make it possible to read the time in the dark. It would al80 be pos6ible to produce jewelry surfaces in accordance with the invention, this a~ an advertising gimmick.
From the above mentioned e~amplefi, it can be seen f,.,.~
that in particular chlldren, youths or sports ; `''l ~ enthusia~t~ will make u~e o~ items with surfaces .,;,,~ .
according to the invention.
.~j~,i.
EXAMPLE .l A clock face was shaped by cold impact extrusion of - a blank atamped out of an aluminum strip of appropriate ~ . , .
- thickne~. The ~aterial used was an age-hardenable alloy of the Al 99.9 MgSi type. After removing the flash the rough housing wa~ polished mechanically then hemically to give it a bright, shiny finish. A 12 um thick oxicle layer was then formed on the ~urface by anodi~ing using a conventional sulfuric acid/oxalic acid '.:i;i :, .
'~ '~'"``; ' ' - -.:-` --7--` . ,.`.. . . .- . . .. . - : , . .. : ;
Z~)()5~
.. Iil 89-410 :.,i i electrolyte; this layer was then given a light-bronze color in a tin coloring bath. Subsequently, the housincJ
was immersed at 20C in an aqueous bath containing a concentration of 5g/1 of the luminescent substance Leukophor AP-FL from Sandoz Ltd. of Basel, Swi~zerland.
The immersion time was 10 min. Following that was a sealing treatment involving 5 min immersion at 30C in a ~;
I commercially available cold sealing bath from Sotec, i Kussnacht, Switzerland followed by 20 minute sealing in ' boiling deionized water of pH 5.7. Ihis prevented any bleeding out of the deposited luminescent substance.
The finished bronze-colored housing exhibited , pronounced bluish fluorescence under ultra-violet radiation of a wavelength of 366 nm.
~3 ,, EXAMPLE 2 A golf club of high stren~th aluminum alloy was given a matt surface appearance by conventional etching ¦ in an alkaline solution, then given a 20 um thick oxide `
:, ...
coating by anodizing with direct current in a sulfuric acid electrolyte. Following that in the same electrolyte was a 3 min lOV alternating current treatment for the purpose of widening the pores. ~ext, ;
`i the part was immersed in an isopropanol solution containing 30g/1 of the luminescent substance ~torelite ;:;
~!
`1 Z0~55~0 89-~10 from Raclium Chemie Ltd. Stufen, Switzerland; this treatment at 20C and lastinq 10 minutes caused the - luminescent substance to be cleposited in the enlarged '~ pores of the oxide layer. The sealing was performed in a conventional cold sealing bath.
~;, The finished product exhibited a yellow-green luminescence in the twilight or in the dark.
It is to be understood that the invention is not ~i limited to the illustrations described and shown herein, . .~.
which are deemed to be merely illustrative of the best ~' modes of carrying out the invention, and which are ,;...
susceptible of modification of form, size, arrangement , of parts and details of operation. The invention rather is intended to encompass all such modifications which ' are within its spirit and scope as defined by the claims.
,,,1 '. ' , .
.
.;
:. `
. . t, .
. ~
~, . .
_g_
`;, The invention relates to the surface of an object . ., made of aluminum or an aluminum alloy, said surface -~ having an oxide layer produc~ed by anodizing.
, It is known to color it~ems by deposition of a , colored layer on the surface, for example by painting or immersing the item in the coloring agent. Also known is coloring by means of anodizing and electrolytic coloring of the resultant oxide layer in a metal salt electrolyte or by immersion in a solution of organic colorant (adsorptive colorant). The last mentioned method ,l normally takes place without the application of electric ~'!
'~ current.
~l By luminescence here and in the following is meant i~ the transformation of any form of energy into light, in ,, particular f]uorescence where the duration of resultant light radiation i8 relatively long.
The market, in particular the consumer goods ` market, has a demand for decorative surfaces on items of aluminum or aluminum alloys having luminescence properties at the same time the metal surface offering a high degree of functional protection against harmful `.~5 effects of a chemical or mechanical nature such as, for J, example, corrosion or wear. Items requiring such ;i surface properties are for example jewelry, watch `~ housings and hands, sports articles or toys.
~ .
~$
~i ;i6~
... , .. - -. .:.
j, 8~-410 " SUMMARY OF THE INVENTION
"'~ The object of the present invention is to meet this need and to influence the surface of items made of ~ aluminum or aluminum alloys and having an oxide layer '~! made by anodizing in such a way that this exhibits ,iJ
',1 luminescence properties, and to provide a process for manufacturing such items.
' This object is achieved by way of the present ~ invention in accordance with which at least one i! substance with luminescence properties is deposited in '; the pores of an oxide layer on the surface of an item of aluminum or an aluminum alloy wherein the oxide layer is produced by anodizing. A process according to the invention for producing such a surface is characterized by p~oviding that the de~osition of the luminescent substance taXes place by adsorption by means of immersion in an aqueous or organic solution of the luminescent substance in question. Vseful further developments of the process according to the present ';,1 invention are characterized by providing that the ..~
deposition of an ionically charged fluorescent or phosphorescent substance takes place electrolytically by `j application of an electric potential. In addition, the .
i, oxide surface produced by anodizing may be colored by adsorptive coloring with a non-luminescent colorant . ~
~ .
i _ 3 _ ~ t ::
~ j ,,: , ;2!1DC~5ior~6~
: `
, 89-410 before or after deposition of the luminescent `/ substance. In addition, the oxide surface produced by ",!' anodizing may be colored by electrolytic treatment in a ~, solution containing at least one meta] salt, this before ,., :~
or after deposition of the luminescent substance, ,~
wherein at least one salt of tin, nickel, cobalt or copper may be employed. The deposition of the , ., ;, luminescent substance by adsorption by means of .~ il .
l immersion in an aqueous or organic solution of the .. . .
~` luminescent substance may take place at the same time as .~';!
the deposition of at least one conventional organic colorant in a bath of suitable mixture. In the i ~
deposition of an ionically charged fluorescent or phosphorescent substance electrolytically by application of electric potential, the electrolytic coloring and the ~ deposition of the luminescent substance may take place ;i~ at the same time in a bath of suitable mixture ~ containing at least one metal salt as above. The : t I
;~ aluminum or aluminum alloy surface may be mechanically polished, or chemically or electrolytically brightened ,.,i.,l ~ before anodizing, or combinations of these.
,,.. ~ :
.~' Items benefiting particularly from the surface ~ according to the invention produced by the process `:"j , .
:~.
;~
;:
.,. ~
t. ~` -4-!,. :"
. j .; ~ :` ..... . -,idj . 2 [)~)5S6~3 ':~
~ according to the invention are such from the watch and , .~
clock making industry, preferably housings and hands as "ij~ in this consumer goods industry there is a particularly ,~J~ strong demand for new and decorative finishes.
~ To achieve greater brilliance in the luminescent `~ oxide layer, it is advantageous to use items made of an '',J, aluminum alloy of high purity. Particularly suitable is . :~
an alloy h~ving an aluminum content of at least 99.5%.
If a particularly intensive luminescent surface is desired, it has been found useful to create a greater reservoir for depositing the luminescent substance and, if desired, the accompanying colorant. A larger reservoir is achieved by way of the process aecording to the present invention by providing that before the deposition of the luminescent substance and if desired a colorant, the pore volume in the oxide layer is enlarged by holding in the electrolyte without applying the electric current or by partial dissolution of the oxide layer under the action of an alternating current.
."i.;3 ~ It has been found that after deposition, the :.5 ~ luminescent substance and if desired the added colorant ; ,t or colorants, bleeds out of the pores i.e., partially and without intention the colorant or colorants comes out of the pores again, which results in a reduction in the intensity of luminescence and if applicable also . .
: ..
'~
, ~:, .. . .. .
2~055;~E~0 i . , , color. To prevent this undesirable effect, the process ....
-~ according to the present inv,ention can be performed by :i;
providing that the oxide lay~er is sealed in a bath containing nickel and fluoride after deposition of the luminescent substance and, if desired, colorant. The process of the present invention can also be performed , by providing that after anodizing and coloring with a ~:
luminescent substance and if desired colorant the oxide layer is presealed in a first bath containing nickel and . :`t ~ fluoride, and then sealed in a second conventional ~
~ I
~!j' sealing bath, the second bath having a higher i~
te~perature than the first bath.
The surface according to the invention or the ,~
~ surfaces produced by the process according to the invention glow (fluoresce) under the action of ,1 ~! ultra-violet light when fluorescent-luminescent substances have been embedded in the said surfaces.
~1 This effect can be used for example in discotheques with UV bea~s to illuminate jewelry or watches having suxfaces treated according to the invention or for . ,, advertising purposes in that for example shop windows or ;
~I display cases with built-in UV sources illuminate aluminum axticles having surfaces treated according to the invention so that these glow in the twilight or at night and draw the attention of passers-by.
1~? ,.
... .
'.:, ~, -6-*` 2005561~
`.;,.! ' `
.`,~:.,i :. !
Surface~ according to the invention treated with phofiphorescent substances are lumine~cent (phosphorescent) also in the dark after having been illuminated by daylight or artificial light. These can be used for example for the surface treatment of toys, sports articles or the like in order to make it easier to find these in the dark, or for watches and clocks to make it possible to read the time in the dark. It would al80 be pos6ible to produce jewelry surfaces in accordance with the invention, this a~ an advertising gimmick.
From the above mentioned e~amplefi, it can be seen f,.,.~
that in particular chlldren, youths or sports ; `''l ~ enthusia~t~ will make u~e o~ items with surfaces .,;,,~ .
according to the invention.
.~j~,i.
EXAMPLE .l A clock face was shaped by cold impact extrusion of - a blank atamped out of an aluminum strip of appropriate ~ . , .
- thickne~. The ~aterial used was an age-hardenable alloy of the Al 99.9 MgSi type. After removing the flash the rough housing wa~ polished mechanically then hemically to give it a bright, shiny finish. A 12 um thick oxicle layer was then formed on the ~urface by anodi~ing using a conventional sulfuric acid/oxalic acid '.:i;i :, .
'~ '~'"``; ' ' - -.:-` --7--` . ,.`.. . . .- . . .. . - : , . .. : ;
Z~)()5~
.. Iil 89-410 :.,i i electrolyte; this layer was then given a light-bronze color in a tin coloring bath. Subsequently, the housincJ
was immersed at 20C in an aqueous bath containing a concentration of 5g/1 of the luminescent substance Leukophor AP-FL from Sandoz Ltd. of Basel, Swi~zerland.
The immersion time was 10 min. Following that was a sealing treatment involving 5 min immersion at 30C in a ~;
I commercially available cold sealing bath from Sotec, i Kussnacht, Switzerland followed by 20 minute sealing in ' boiling deionized water of pH 5.7. Ihis prevented any bleeding out of the deposited luminescent substance.
The finished bronze-colored housing exhibited , pronounced bluish fluorescence under ultra-violet radiation of a wavelength of 366 nm.
~3 ,, EXAMPLE 2 A golf club of high stren~th aluminum alloy was given a matt surface appearance by conventional etching ¦ in an alkaline solution, then given a 20 um thick oxide `
:, ...
coating by anodizing with direct current in a sulfuric acid electrolyte. Following that in the same electrolyte was a 3 min lOV alternating current treatment for the purpose of widening the pores. ~ext, ;
`i the part was immersed in an isopropanol solution containing 30g/1 of the luminescent substance ~torelite ;:;
~!
`1 Z0~55~0 89-~10 from Raclium Chemie Ltd. Stufen, Switzerland; this treatment at 20C and lastinq 10 minutes caused the - luminescent substance to be cleposited in the enlarged '~ pores of the oxide layer. The sealing was performed in a conventional cold sealing bath.
~;, The finished product exhibited a yellow-green luminescence in the twilight or in the dark.
It is to be understood that the invention is not ~i limited to the illustrations described and shown herein, . .~.
which are deemed to be merely illustrative of the best ~' modes of carrying out the invention, and which are ,;...
susceptible of modification of form, size, arrangement , of parts and details of operation. The invention rather is intended to encompass all such modifications which ' are within its spirit and scope as defined by the claims.
,,,1 '. ' , .
.
.;
:. `
. . t, .
. ~
~, . .
_g_
Claims (18)
1. The process which comprises: providing a surface of an aluminum or aluminum alloy having thereon an anodized, oxide layer containing pores; and depositing in the pores of the oxide layer at least one substance with luminescence properties.
2. Process according to claim 1 wherein the deposition of the luminescent substance takes place by adsorption by means of immersion in a solution of the luminescent substance.
3. Process according to claim 1 including the deposition of an ionically charged luminescent substance electrolytically.
4. Process according to claim 1 including the step of coloring the oxide surface by adsorptive coloring with a non-luminescent colorant.
5. Process according to claim 4 wherein the coloring step takes place before deposition of the luminescent substance.
6. Process according to claim 4 wherein the coloring step takes place after deposition of the luminescent substance.
7. Process according to claim 1 including the step of coloring the oxide surface by electrolytic treatment in a solution containing at least one metal salt.
8. Process according to claim 7 wherein the coloring step takes place before deposition of the luminescent substance.
9. Process according to claim 7 wherein the coloring step takes place after deposition of the luminescent substance.
10. Process according to claim 7 wherein said metal salt is selected from the group consisting of salts of tin, nickel, cobalt, copper and mixtures thereof.
11. Process according to claim 2 wherein the adsorptive deposition of the luminescent substance takes place at the same time as the deposition on the oxide layer of at least one organic colorant from a bath containing said colorant.
12. Process according to claim 3 wherein the deposition of the luminescent substance takes place at the same time as the electrolytic coloring of the oxide layer in a bath containing at least one metal salt.
13. Process according to claim 1 wherein the oxide layer produced by anodizing is produced on an aluminum alloy containing at least 99.5% aluminum.
14. Process according to claim 1 wherein before anodizing the aluminum or aluminum alloy is subjected to a step selected from the group consisting of mechanically polishing, chemically brightening, electrolytically brightening and mixtures thereof.
15. Process according to claim 1 wherein before deposition of the luminescent substance the pore volume in the oxide layer is enlarged by holding in an electrolyte without applying electric current.
16. Process according to claim 1 wherein before deposition of the luminescent substance the oxide layer is partially dissolved in an electrolyte under the action of an alternating current.
17. Process according to claim 1 wherein the oxide layer is sealed in a bath containing nickel and fluoride after deposition of the luminescent substance.
18. Process according to claim 17 including a second sealing step in a second bath having a higher temperature than the first bath.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH466888 | 1988-12-16 | ||
| CH4668/88 | 1988-12-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2005560A1 true CA2005560A1 (en) | 1990-06-16 |
Family
ID=4280384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2005560 Abandoned CA2005560A1 (en) | 1988-12-16 | 1989-12-14 | Anodised surface of an object with luminescence properties and process for producing the surface |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0374100B1 (en) |
| JP (1) | JPH02213496A (en) |
| CA (1) | CA2005560A1 (en) |
| DE (1) | DE58907236D1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012141626A1 (en) * | 2011-04-12 | 2012-10-18 | Alusera Ab | Method for manufacturing of an object having phosphorescent properties |
| CN105780083A (en) * | 2016-05-20 | 2016-07-20 | 深圳天珑无线科技有限公司 | Self-luminous anodic oxidation process for aluminum or aluminum alloy, aluminum and aluminum alloy |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3825213A1 (en) * | 1988-07-25 | 1990-02-08 | Henkel Kgaa | METHOD FOR ADSORPTIVELY COLORING ANODICALLY PRODUCED SURFACES |
-
1989
- 1989-12-08 DE DE89810931T patent/DE58907236D1/en not_active Expired - Fee Related
- 1989-12-08 EP EP89810931A patent/EP0374100B1/en not_active Expired - Lifetime
- 1989-12-14 CA CA 2005560 patent/CA2005560A1/en not_active Abandoned
- 1989-12-15 JP JP32578189A patent/JPH02213496A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012141626A1 (en) * | 2011-04-12 | 2012-10-18 | Alusera Ab | Method for manufacturing of an object having phosphorescent properties |
| US9458549B2 (en) | 2011-04-12 | 2016-10-04 | Alusera Ab | Method for manufacturing of an object having phosphorescent properties |
| CN105780083A (en) * | 2016-05-20 | 2016-07-20 | 深圳天珑无线科技有限公司 | Self-luminous anodic oxidation process for aluminum or aluminum alloy, aluminum and aluminum alloy |
Also Published As
| Publication number | Publication date |
|---|---|
| DE58907236D1 (en) | 1994-04-21 |
| EP0374100B1 (en) | 1994-03-16 |
| EP0374100A1 (en) | 1990-06-20 |
| JPH02213496A (en) | 1990-08-24 |
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