GB625089A - A process for removing oxide films from metals and metal alloys - Google Patents

A process for removing oxide films from metals and metal alloys

Info

Publication number
GB625089A
GB625089A GB14388/45A GB1438845A GB625089A GB 625089 A GB625089 A GB 625089A GB 14388/45 A GB14388/45 A GB 14388/45A GB 1438845 A GB1438845 A GB 1438845A GB 625089 A GB625089 A GB 625089A
Authority
GB
United Kingdom
Prior art keywords
bath
metals
treatment
alloys
aqueous solution
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
GB14388/45A
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
Publication of GB625089A publication Critical patent/GB625089A/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
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
    • C23G1/28—Cleaning or pickling metallic material with solutions or molten salts with molten salts
    • C23G1/32—Heavy metals

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
  • ing And Chemical Polishing (AREA)

Abstract

Oxide surface films on metals and alloys are removed by treatment in a fused salt bath comprising a salt having basic properties (e.g. Na OH) and an oxidizing agent in such minor proportions (usually of the order 10 per cent) as will bring about further oxidation of the surface oxide to convert it into compounds at least partly removable in the molten bath, followed by treatment with an aqueous solution of an inorganic acid to complete the removal of the said oxide film. Suitable oxidizing agents are nitrates, chlorates, peroxides, perchlorates of for instance the alkali or alkaline earth metals, whilst sodium or potassium carbonate may also be added to the bath. A preliminary treatment in an aqueous solution of an inorganic acid may be given; whilst the alloys to which the invention specifically refers are those of iron, chromium, nickel, manganese, cobalt, molybdenum, vanadium or tungsten, and especially the "stainless steels." The Specification as open to inspection under Sect. 91 comprises also the use of a fused bath of sodium carbonate and an oxidizing agent. This subject-matter does not appear in the Specification as accepted. Reference has been directed by the Comptroller to Specification 464,982.
GB14388/45A 1944-06-02 1945-06-07 A process for removing oxide films from metals and metal alloys Expired GB625089A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US538536A US2538702A (en) 1944-06-02 1944-06-02 Metal surface cleaning

Publications (1)

Publication Number Publication Date
GB625089A true GB625089A (en) 1949-06-22

Family

ID=24147309

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14388/45A Expired GB625089A (en) 1944-06-02 1945-06-07 A process for removing oxide films from metals and metal alloys

Country Status (2)

Country Link
US (1) US2538702A (en)
GB (1) GB625089A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE961634C (en) * 1952-02-05 1957-04-11 Ver Deutsche Metallwerke Ag Process for achieving bright surfaces of metallic materials and their alloys, preferably of steels containing chromium
US3082136A (en) * 1957-05-02 1963-03-19 Sarkes Tarzian Semiconductor devices and method of manufacturing them

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2641559A (en) * 1948-09-08 1953-06-09 United States Steel Corp Method of cleaning and descaling ferrous articles and a bath therefor
US2626224A (en) * 1949-11-30 1953-01-20 Marie A Levesque Cleaning oxide from oxidized molybdenum wire
FR1075489A (en) * 1953-03-05 1954-10-18 Chemical descaling of large metal structures
DE1062517B (en) * 1954-11-05 1959-07-30 Kussmann Ferro Chemie Agent in paste form for the cold descaling of large-area building sheets
US3617039A (en) * 1968-04-26 1971-11-02 Mitsubishi Heavy Ind Ltd Descaling apparatus for steel
US3715236A (en) * 1970-10-08 1973-02-06 Mitsubishi Heavy Ind Ltd Descaling method for steel
US3899322A (en) * 1972-06-20 1975-08-12 Rockwell International Corp Noble-type metal recovery process by use of molten salt bath
US20070065587A1 (en) * 2005-08-26 2007-03-22 Hatle Loren L Method for removal of surface contaminants from substrates
US10030310B1 (en) 2015-02-05 2018-07-24 Clean Metal Technologies, LLC Methods for removal of reaction sites on metal surfaces and application of a nanotube containing protecting coating
WO2020205555A1 (en) 2019-03-29 2020-10-08 Corrosion Exchange Llc Surface treatment composition and methods for use

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1247086A (en) * 1915-04-03 1917-11-20 Myron L Crowe Method of coating metallic articles to prevent oxidation.
US1859734A (en) * 1928-12-21 1932-05-24 Electro Metallurg Co Method of removing oxide coatings from metals
US1899734A (en) * 1930-01-18 1933-02-28 American Sheet & Tin Plate Removal of oxids from ferrous metal
GB466661A (en) * 1935-10-26 1937-05-26 Rust Proofing Company Of Canad Process of cleaning metal surfaces
US2311099A (en) * 1938-10-21 1943-02-16 Tainton Urlyn Clifton Metal treatment
US2347742A (en) * 1939-09-18 1944-05-02 Rustless Iron & Steel Corp Pickling process
USRE22887E (en) * 1944-06-02 1947-06-03 Process for removing oxide from

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE961634C (en) * 1952-02-05 1957-04-11 Ver Deutsche Metallwerke Ag Process for achieving bright surfaces of metallic materials and their alloys, preferably of steels containing chromium
US3082136A (en) * 1957-05-02 1963-03-19 Sarkes Tarzian Semiconductor devices and method of manufacturing them

Also Published As

Publication number Publication date
US2538702A (en) 1951-01-16

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