GB378916A - Improved process for protecting magnesium and its alloys against corrosion - Google Patents

Improved process for protecting magnesium and its alloys against corrosion

Info

Publication number
GB378916A
GB378916A GB14724/31A GB1472431A GB378916A GB 378916 A GB378916 A GB 378916A GB 14724/31 A GB14724/31 A GB 14724/31A GB 1472431 A GB1472431 A GB 1472431A GB 378916 A GB378916 A GB 378916A
Authority
GB
United Kingdom
Prior art keywords
solution
acid
selenite
metal
against corrosion
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
Application number
GB14724/31A
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.)
Individual
Original Assignee
Individual
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.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB14724/31A priority Critical patent/GB378916A/en
Priority to US607217A priority patent/US1961030A/en
Priority to DEI44377D priority patent/DE601521C/en
Priority to FR737082D priority patent/FR737082A/en
Publication of GB378916A publication Critical patent/GB378916A/en
Expired legal-status Critical Current

Links

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
    • C23C22/48—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 not containing phosphates, hexavalent chromium compounds, fluorides or complex fluorides, molybdates, tungstates, vanadates or oxalates
    • C23C22/57—Treatment of magnesium or alloys based thereon

Abstract

To protect magnesium or magnesium alloys against corrosion the metal is immersed in or rubbed or sprayed with a solution of selenious acid or a solution of a soluble selenite containing one or both of (a) selenious acid and (b) an acid or salt which corrodes the metal, e.g. sodium chloride. Examples of solutions containing a soluble selenite are: a solution of sodium selenite and phosphoric acid; a solution of sodium selenite, selenious acid, and sodium chloride. A solution containing sodium selenite and hydrochloric acid is referred to in the Provisional Specification. It is stated that a coating containing selenium in the elemental or combined form is deposited on the metal. The protective action may be improved by heating the coated metal to 170-225 DEG C. The coating forms a good basis for paints.
GB14724/31A 1931-05-19 1931-05-19 Improved process for protecting magnesium and its alloys against corrosion Expired GB378916A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB14724/31A GB378916A (en) 1931-05-19 1931-05-19 Improved process for protecting magnesium and its alloys against corrosion
US607217A US1961030A (en) 1931-05-19 1932-04-23 Process for protecting magnesium and its alloys against corrosion
DEI44377D DE601521C (en) 1931-05-19 1932-05-07 Process for the production of a corrosion protection coating on magnesium and magnesium alloys
FR737082D FR737082A (en) 1931-05-19 1932-05-13 Process for protecting magnesium and its alloys against corrosion

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB14724/31A GB378916A (en) 1931-05-19 1931-05-19 Improved process for protecting magnesium and its alloys against corrosion

Publications (1)

Publication Number Publication Date
GB378916A true GB378916A (en) 1932-08-19

Family

ID=10046353

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14724/31A Expired GB378916A (en) 1931-05-19 1931-05-19 Improved process for protecting magnesium and its alloys against corrosion

Country Status (4)

Country Link
US (1) US1961030A (en)
DE (1) DE601521C (en)
FR (1) FR737082A (en)
GB (1) GB378916A (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2522474A (en) * 1942-07-02 1950-09-12 Battelle Memorial Institute Treatment of zinc surfaces
US2426173A (en) * 1942-12-01 1947-08-26 Standard Telephones Cables Ltd Selenium coating by immersion
US2438740A (en) * 1944-03-27 1948-03-30 Canadian Copper Refiners Ltd Method of protecting the surface of articles formed from a magnesium alloy
US2475945A (en) * 1946-09-21 1949-07-12 Canadian Copper Refiners Ltd Method of chemically coating metallic articles of aluminum or predominantly of aluminm and solution for use therein
BE634687A (en) * 1947-01-06
US2475944A (en) * 1949-02-02 1949-07-12 Canadian Copper Refiners Ltd Process for protecting ferrous metal surfaces by coating and dipping solution for use therein
US2692213A (en) * 1951-04-11 1954-10-19 Chicago Dev Corp Electrical conductor
US2878149A (en) * 1955-10-31 1959-03-17 Walter A Mason Product for effecting a cold chemical oxidation of copper and its alloys

Also Published As

Publication number Publication date
FR737082A (en) 1932-12-06
US1961030A (en) 1934-05-29
DE601521C (en) 1934-08-17

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