US2134830A - Process of producing corrosion resistant coatings on magnesium and high percentage magnesium alloys - Google Patents

Process of producing corrosion resistant coatings on magnesium and high percentage magnesium alloys Download PDF

Info

Publication number: US2134830A
Authority: US; United States
Prior art keywords: magnesium; high percentage; corrosion resistant; resistant coatings; producing corrosion
Prior art date: 1936-09-04
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 - Lifetime

Application number

US160272A

Other languages

English (en)

Inventor

Michel Josef Martin

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

MAGNESIUM DEV CORP

MAGNESIUM DEVELOPMENT Corp

Original Assignee

MAGNESIUM DEV CORP

Priority date (The priority date 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 date listed.)

1936-09-04

Filing date

1937-08-21

Publication date

1938-11-01

1937-08-21 Application filed by MAGNESIUM DEV CORP filed Critical MAGNESIUM DEV CORP

1938-11-01 Application granted granted Critical

1938-11-01 Publication of US2134830A publication Critical patent/US2134830A/en

1955-11-01 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Links

238000000576 coating method Methods 0.000 title description 14
FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 title description 12
229910000861 Mg alloy Inorganic materials 0.000 title description 12
229910052749 magnesium Inorganic materials 0.000 title description 12
239000011777 magnesium Substances 0.000 title description 12
238000000034 method Methods 0.000 title description 10
238000005260 corrosion Methods 0.000 title description 9
230000007797 corrosion Effects 0.000 title description 9
239000000243 solution Substances 0.000 description 16
KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 description 12
AWJWCTOOIBYHON-UHFFFAOYSA-N furo[3,4-b]pyrazine-5,7-dione Chemical compound C1=CN=C2C(=O)OC(=O)C2=N1 AWJWCTOOIBYHON-UHFFFAOYSA-N 0.000 description 12
235000001055 magnesium Nutrition 0.000 description 11
229940091250 magnesium supplement Drugs 0.000 description 11
229910052751 metal Inorganic materials 0.000 description 7
239000002184 metal Substances 0.000 description 7
239000008399 tap water Substances 0.000 description 7
235000020679 tap water Nutrition 0.000 description 7
150000002500 ions Chemical class 0.000 description 6
VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 5
229910021653 sulphate ion Inorganic materials 0.000 description 5
XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
SOCTUWSJJQCPFX-UHFFFAOYSA-N dichromate(2-) Chemical compound [O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O SOCTUWSJJQCPFX-UHFFFAOYSA-N 0.000 description 4
238000007654 immersion Methods 0.000 description 4
239000007864 aqueous solution Substances 0.000 description 3
239000011248 coating agent Substances 0.000 description 3
-1 sulphate ions Chemical class 0.000 description 3
GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 2
QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
239000002253 acid Substances 0.000 description 2
238000007792 addition Methods 0.000 description 2
230000001464 adherent effect Effects 0.000 description 2
239000010953 base metal Substances 0.000 description 2
230000015572 biosynthetic process Effects 0.000 description 2
229910001385 heavy metal Inorganic materials 0.000 description 2
229910017604 nitric acid Inorganic materials 0.000 description 2
239000011241 protective layer Substances 0.000 description 2
150000003839 salts Chemical class 0.000 description 2
JHWIEAWILPSRMU-UHFFFAOYSA-N 2-methyl-3-pyrimidin-4-ylpropanoic acid Chemical compound OC(=O)C(C)CC1=CC=NC=N1 JHWIEAWILPSRMU-UHFFFAOYSA-N 0.000 description 1
229910001369 Brass Inorganic materials 0.000 description 1
FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
229910052783 alkali metal Inorganic materials 0.000 description 1
150000001340 alkali metals Chemical class 0.000 description 1
229910045601 alloy Inorganic materials 0.000 description 1
239000000956 alloy Substances 0.000 description 1
230000004075 alteration Effects 0.000 description 1
239000010951 brass Substances 0.000 description 1
150000001805 chlorine compounds Chemical class 0.000 description 1
ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical class [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 1
238000007598 dipping method Methods 0.000 description 1
230000007717 exclusion Effects 0.000 description 1
239000007789 gas Substances 0.000 description 1
229910052748 manganese Inorganic materials 0.000 description 1
GQPLMRYTRLFLPF-UHFFFAOYSA-N nitrous oxide Inorganic materials [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 1
239000011780 sodium chloride Substances 0.000 description 1
150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
229910052725 zinc Inorganic materials 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
- 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
- C23C22/06—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 aqueous acidic solutions with pH less than 6
- C23C22/24—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 aqueous acidic solutions with pH less than 6 containing hexavalent chromium compounds

Definitions

the present invention relates to a process of producing corrosion resistant coatings on mag nesium and high percentage magnesium-alloys.
magnesium and high percentage magnesium alloys are treated with an aqueous solution ofbetween about 0.1 and l per-cent chromic acid, with the exclusion of other saline additions, but in the presence of chlorides and/or sulphates in the quantities usual in ordinary tap water.
chromic acid in the aforesaid proportions and dissolved in water having the usual chloride and/or sulphate content of tap water coatings are formed, and that such coatings are uniformly well adherent on the base metal.
the content of chromic acid in the solution should not exceed about 4 grms. per litre.
the colour shade of the coating produced on the metal surface may be varied by varying the temperature or the bath according to the invention. With a temperature of 20 C. the shade is similar to that oi brass, whereas with higher temperatures the shade becomes darker. It is of some importance, however, to note that with temperatures above normal the duration of immersion necessary for producing a uniformly adherent sound coating is reduced, being approximately four minutes for a temperature of 20 and falling oil to one and a half minutes at 100 C.- The adherence and also the soundness of the coatings are not reduced when working with higher temperatures, provided that the duration of immersion is correspondingly shortened.

Landscapes

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)
ing And Chemical Polishing (AREA)

US160272A 1936-09-04 1937-08-21 Process of producing corrosion resistant coatings on magnesium and high percentage magnesium alloys Expired - Lifetime US2134830A (en)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE826224X		1936-09-04
DE2134830X		1936-09-04

Publications (1)

Publication Number	Publication Date
US2134830A true US2134830A (en)	1938-11-01

Family

ID=61187889

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
US160272A Expired - Lifetime US2134830A (en)	1936-09-04	1937-08-21	Process of producing corrosion resistant coatings on magnesium and high percentage magnesium alloys

Country Status (3)

Country	Link
US (1)	US2134830A (fr)
BE (1)	BE421448A (fr)
FR (1)	FR826224A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2454799A (en) *	1944-12-09	1948-11-30	Hart David	Method of producing protective coatings on magnesium powder
US2799601A (en) *	1955-04-22	1957-07-16	Allied Res Products Inc	Composition and method for coating zinc and zinc alloy sheets
US5219617A (en) *	1989-09-19	1993-06-15	Michigan Chrome And Chemical Company	Corrosion resistant coated articles and process for making same

1937
- 1937-05-07 BE BE421448D patent/BE421448A/fr unknown
- 1937-08-21 US US160272A patent/US2134830A/en not_active Expired - Lifetime
- 1937-09-03 FR FR826224D patent/FR826224A/fr not_active Expired

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2454799A (en) *	1944-12-09	1948-11-30	Hart David	Method of producing protective coatings on magnesium powder
US2799601A (en) *	1955-04-22	1957-07-16	Allied Res Products Inc	Composition and method for coating zinc and zinc alloy sheets
US5219617A (en) *	1989-09-19	1993-06-15	Michigan Chrome And Chemical Company	Corrosion resistant coated articles and process for making same
US5492766A (en) *	1989-09-19	1996-02-20	Michigan Chrome And Chemical Company	Corrosion resistant coated articles and process for making same

Also Published As

Publication number	Publication date
FR826224A (fr)	1938-03-25
BE421448A (fr)	1937-06-30

Publication	Publication Date	Title
US2035380A (en)	1936-03-24	Method of coating zinc or cadmium base metals
US2106904A (en)	1938-02-01	Coating malleable non-noble heavy metals
US4168983A (en)	1979-09-25	Phosphate coating composition
US2559878A (en)	1951-07-10	Zinc and cadmium passivating bath
US2203670A (en)	1940-06-11	Method of treating electrolytic coatings on magnesium and its alloys
US2746915A (en)	1956-05-22	Electrolytic metal treatment and article
US2462196A (en)	1949-02-22	Protective phosphate coatings for metal surfaces
US2817610A (en)	1957-12-24	Method for the production of black oxide coatings on steel and iron and composition therefor
US2134830A (en)	1938-11-01	Process of producing corrosion resistant coatings on magnesium and high percentage magnesium alloys
US1947122A (en)	1934-02-13	Surface treatment of magnesium and magnesium base alloys
US1965269A (en)	1934-07-03	Method of coloring aluminum
US2322205A (en)	1943-06-22	Method of treating magnesium and its alloys
US2433723A (en)	1947-12-30	Solution for smoothing zinc surfaces
US1961030A (en)	1934-05-29	Process for protecting magnesium and its alloys against corrosion
US2975073A (en)	1961-03-14	Corrosion resistance of electroless nickel plate
US2617749A (en)	1952-11-11	Activation of oxalate metal coating compositions
US2514149A (en)	1950-07-04	Coating of metal surfaces
US2520475A (en)	1950-08-29	Process for the chemical oxidation of aluminum and alloys thereof
US3269877A (en)	1966-08-30	Phosphate coating composition
US2475945A (en)	1949-07-12	Method of chemically coating metallic articles of aluminum or predominantly of aluminm and solution for use therein
US2178977A (en)	1939-11-07	Surface treatment of magnesium and magnesium base alloys
US1840562A (en)	1932-01-12	Method of heat-treating aluminum and articles thereby
US2352076A (en)	1944-06-20	Process for the protection of magnesium and magnesium base alloys against corrosion
US2314341A (en)	1943-03-23	Method of and bath for coating magnesium
US2066181A (en)	1936-12-29	Production of protective coating on aluminum and noncuprous alloys thereof