US1642309A - Process for the production of a weatherproof oxide layer on electron metal - Google Patents

Process for the production of a weatherproof oxide layer on electron metal Download PDF

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Publication number
US1642309A
US1642309A US715251A US71525124A US1642309A US 1642309 A US1642309 A US 1642309A US 715251 A US715251 A US 715251A US 71525124 A US71525124 A US 71525124A US 1642309 A US1642309 A US 1642309A
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metal
weatherproof
oxide layer
production
solution
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US715251A
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Pieper Willy
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    • 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
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
    • C23C22/60—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using alkaline aqueous solutions with pH greater than 8

Definitions

  • weight ium is not weather-proof but changes under the action of theatmospheric air after a short time.
  • Numerous processes have been invented with the view to do away with this disagreeable property of this metal by producing a weather-proof protecting coatlng on the metal by oxidation.
  • the known processes give however no satisfactory result as they all use acid solutions.
  • e ectron metal or the articles made from it are dipped into an alkaline solution j heated to a proximately 110 to 120 (3., for instance so umhydroxide, in combination with substances which give off oxy n, for
  • the oxide coating After a short time a very uniform oxide coating is produced which strongly adheres to'the fundamental metal and is of grey color,that is of similar appearance as the electron metal. After animmersion of 'about 20 minutes the oxide coating is for instance 0,05 mm. thick; it may however be produced at'- a thickness 'of 0,30 mm. and more. The electron metal is dried after it has been taken out of the solution whereupon the oxide coating may be burnished.
  • the oxide coating may be oolored'lo al- I kaline proof coloring substances of any ind, preferably by means of aniline dyes.
  • colorin substances soluble in 'oil which prefer-a l are also alkaline proof, and to which oi wax, Vaseline, paraflin, or anyother fat of viscid' consistency is added, are painted in the desired design on the metal articlehaving the oxide coating, whereupon the metal article with the palnt is heated for about 10 seconds at a temperature of about 150 C. and cooled slowly.
  • the coloring. substance ' will then have permeated the entire oxide layer so that it is as lasting
  • the metal thus treated may as this layer.
  • the color is preferabl aid of a stencil so that il;
  • the finished colored or uncolored oxide be subsequently impregnated with one oils or the like to make the same to a higher degree resistant'against the influences of the weather or even waterproof.
  • the hydrocarbons, oils or the like can penetrate into the metal, like the coloring substances.
  • the above described processv may further be used for other metals possessing similar properties as the electron metal.
  • This process is however especially important for the manufacturing of slide rules of metal, as they can be colored in the same manner as the wood slide rules.
  • the parts of a metal slide rule corresponding to the parts at which the wood" is visible in wooden slide rules are colored brown andthe parts of the l metal slide which correspond to the parts of in using for the oxidation a solution 0 ydroxide and of chemical substances sodium I giving off oxygen, such solution containing potassium nitrate, said solution being free from any oily matter.
  • a process of producing a weather-proof protecting coating on electron-metal and similar metals by oxidation consisting in us ing for the oxidation a solution of sodium hydroxide and of chemical substances giving ofi oxygen, such solution including ferric hydrate, said solution being free from any 011 matter.

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  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Treatment Of Metals (AREA)
  • Coloring (AREA)

Description

Patented Sept. 13, 19 27.
. NITED STATES. RATENTgbFFlCi j WELLY rmrna, or nunnn'naao, GERMANY, assrenon- 'ro J. a soanmma nacnrl V nnrssznueranarx a.-e., or nunnmmae, GERMANY.
- raocnss roa run rnonuc'r on or a No Drawing. Application filed Kay 22, 1924", Serial No. 715,251, and in Germany July 4, 1828.
The surface of the commonly used electron metal i. e. of a manganese base z1ncaluminum alloy which as regards quality,
weight ium, is not weather-proof but changes under the action of theatmospheric air after a short time. Numerous processes have been invented with the view to do away with this disagreeable property of this metal by producing a weather-proof protecting coatlng on the metal by oxidation. The known processes give however no satisfactory result as they all use acid solutions.
' only on the surface of the oxide coating but permeating through the entire layerof oxide.
The process according to this mvent-ion.
ma for instance be carried through in the -fol owin manner The e ectron metal or the articles made from it are dipped into an alkaline solution j heated to a proximately 110 to 120 (3., for instance so umhydroxide, in combination with substances which give off oxy n, for
instance potassium nitrate, ferric by rate or the like. When the articles to be oxidized are being dipped into. the alkaline solution they are preferably slightly moved to and fro.
After a short time a very uniform oxide coating is produced which strongly adheres to'the fundamental metal and is of grey color,that is of similar appearance as the electron metal. After animmersion of 'about 20 minutes the oxide coating is for instance 0,05 mm. thick; it may however be produced at'- a thickness 'of 0,30 mm. and more. The electron metal is dried after it has been taken out of the solution whereupon the oxide coating may be burnished.
The oxide coating may be oolored'lo al- I kaline proof coloring substances of any ind, preferably by means of aniline dyes. The
yes are preferably added to the alkaline and appearance is similar to alumin-' st time, the coloring of layer ma hydrocar solution so that the oxide coating produced, is colored. The oxide coating ma however wna'rnnnraoor oxmn LAYER on mamm- IETAL. I
be colored later on after the drymg of the electron metal by separate treatment with alkaline proof solution of dyes and metal oxides. I p The coloring substance permeates the en? tire oxide coating so that -the coloring quite as durable as the oxide coating.
By the above described treatment of the electron metal with a hot alkaline solution in combination with substances, giving, off oxygen the structure of those parts o the metal is changed whichis permeated by the solution and the coloring substance camper meate this changed layer of the metal.
' To produce multi-coloredoxide coatings, colorin substances soluble in 'oil, which prefer-a l are also alkaline proof, and to which oi wax, Vaseline, paraflin, or anyother fat of viscid' consistency is added, are painted in the desired design on the metal articlehaving the oxide coating, whereupon the metal article with the palnt is heated for about 10 seconds at a temperature of about 150 C. and cooled slowly.. The coloring. substance 'will then have permeated the entire oxide layer so that it is as lasting The metal thus treated may as this layer.
be burnished.
The color is preferabl aid of a stencil so that il;
put on with the signs of any kind and colors can be produced with sharp .out-
lines or not. Very efiective malticolor effects can thus be produced.
The finished colored or uncolored oxide be subsequently impregnated with one oils or the like to make the same to a higher degree resistant'against the influences of the weather or even waterproof. As the structure of the metal. has been altered at the production of the oxide layer the hydrocarbons, oils or the like can penetrate into the metal, like the coloring substances. I
The above described processv may further be used for other metals possessing similar properties as the electron metal. This process is however especially important for the manufacturing of slide rules of metal, as they can be colored in the same manner as the wood slide rules. The parts of a metal slide rule corresponding to the parts at which the wood" is visible in wooden slide rules are colored brown andthe parts of the l metal slide which correspond to the parts of in using for the oxidation a solution 0 ydroxide and of chemical substances sodium I giving off oxygen, such solution containing potassium nitrate, said solution being free from any oily matter. g
2. A process of producing a weather-proof protecting coating on electron-metal and similar metals by oxidation, consisting in us ing for the oxidation a solution of sodium hydroxide and of chemical substances giving ofi oxygen, such solution including ferric hydrate, said solution being free from any 011 matter.
n testimony whereof I aflix my signature.
WILLY PIEPER.
US715251A 1923-07-04 1924-05-22 Process for the production of a weatherproof oxide layer on electron metal Expired - Lifetime US1642309A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES63264D DE412020C (en) 1923-07-04 1923-07-04 Process for the production of a weather-resistant protective layer on electron metal and similar metals

Publications (1)

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US1642309A true US1642309A (en) 1927-09-13

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US (1) US1642309A (en)
DE (1) DE412020C (en)
GB (1) GB218619A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2458073A (en) * 1944-01-06 1949-01-04 Parker Appliance Co Coating magnesium and magnesium alloys

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE739605C (en) * 1939-12-07 1943-09-30 Albert Butziger Process for converting the surface of magnesium or magnesium alloys into an electrically non-conductive, corrosion-resistant layer
US2482728A (en) * 1946-12-12 1949-09-20 Dow Chemical Co Dyed hydrated oxide coatings on magnesium and magnesium-base alloys
US2832704A (en) * 1952-07-01 1958-04-29 Raymond H Comyn Coated pyrotechnic metal powders and method of their preparation
US2894864A (en) * 1952-09-19 1959-07-14 Carlfors Bruk E Bjorklund & Co Method for inactivating metallic powder
US2850416A (en) * 1954-09-21 1958-09-02 Du Pont Process for coating metals and product thereof
US2850415A (en) * 1954-09-21 1958-09-02 Du Pont Process for treating metals with ferrate solution

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2458073A (en) * 1944-01-06 1949-01-04 Parker Appliance Co Coating magnesium and magnesium alloys

Also Published As

Publication number Publication date
GB218619A (en) 1924-07-31
DE412020C (en) 1925-04-09

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