GB1139013A - Method of improving the resistance to thermal shock of hard anodized aluminium surfaces - Google Patents

Method of improving the resistance to thermal shock of hard anodized aluminium surfaces

Info

Publication number
GB1139013A
GB1139013A GB29998/67A GB2999867A GB1139013A GB 1139013 A GB1139013 A GB 1139013A GB 29998/67 A GB29998/67 A GB 29998/67A GB 2999867 A GB2999867 A GB 2999867A GB 1139013 A GB1139013 A GB 1139013A
Authority
GB
United Kingdom
Prior art keywords
resistance
thermal shock
temperature
anodized
heating
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
GB29998/67A
Inventor
Clarence Walter Forestek
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 GB1139013A publication Critical patent/GB1139013A/en
Expired legal-status Critical Current

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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Laminated Bodies (AREA)
  • Heat Treatment Of Articles (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
  • Chemical Treatment Of Metals (AREA)

Abstract

1,139,013. Treating anodized aluminium to improve its resistance to thermal shock. C.W. FORESTEK. June 29, 1967 [July 13, 1966], No. 29998/ 67. Heading C7B. An anodically produced oxide coating from 0À001 to 0À008 inch thick on Al or Al alloy has its resistance to thermal shock, which might craze or crack it, improved by drying the anodized surface and heating the surface by a dry method at a rate of no more than 4À1‹F. per minute either (a) to a temperature of from 200‹ to 212‹ F., or (b) to a temperature T, which is from 150‹ F. to less than 200‹ F. and maintaining the surface at the temperature T for a time of at least <SP>2</SP>/ 5 (200-T) minutes, and after the heating step (a) or (b) cooling the surface at the rate of no more than 4À1‹F. per minute to room temperature. The anodizing may be in sulphuric, oxalic or chromic acid. Specified Al alloys contain minor amounts of Mg and Cu. After heating and cooling the anodized surface as above, the surface may be heated to at least 400‹ F. in not less than 30 minutes and subsequently be allowed to cool. The heat-treated anodized surface may also be treated with perfluoro-carbon, e.g. (Registered Trade Mark) "Teflon" as described in Specification 1, 126, 748.
GB29998/67A 1966-07-13 1967-06-29 Method of improving the resistance to thermal shock of hard anodized aluminium surfaces Expired GB1139013A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US56473866A 1966-07-13 1966-07-13

Publications (1)

Publication Number Publication Date
GB1139013A true GB1139013A (en) 1969-01-08

Family

ID=24255678

Family Applications (1)

Application Number Title Priority Date Filing Date
GB29998/67A Expired GB1139013A (en) 1966-07-13 1967-06-29 Method of improving the resistance to thermal shock of hard anodized aluminium surfaces

Country Status (6)

Country Link
US (1) US3488262A (en)
BE (1) BE701076A (en)
DE (1) DE1621078B2 (en)
GB (1) GB1139013A (en)
NL (1) NL6709471A (en)
SE (1) SE334079B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103498181A (en) * 2013-09-04 2014-01-08 沈阳理工大学 Preparation method of self-lubricating wear-resistant coating on surfaces of titanium and titanium alloy

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3861031A (en) * 1974-05-01 1975-01-21 Rikagaku Kenkyusho Method of making a moisture-sensitive element
DE2626131C2 (en) * 1976-06-11 1982-06-03 Mahle Gmbh, 7000 Stuttgart Hard anodized light metal pistons for internal combustion engines
EP1806035A2 (en) * 2004-10-29 2007-07-11 O'BRIEN, Peter An illuminator and manufacturing method
JP2008202112A (en) * 2007-02-21 2008-09-04 Fujifilm Corp Microstructure and method of manufacturing the same
IT1393140B1 (en) * 2009-03-17 2012-04-11 Nuovo Pignone Spa METHOD OF PRODUCTION OF A PROTECTIVE COATING FOR A COMPONENT OF A TURBOMACCHINA, THE SAME COMPONENT AND THE RELATED MACHINE
US11312107B2 (en) * 2018-09-27 2022-04-26 Apple Inc. Plugging anodic oxides for increased corrosion resistance

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB595365A (en) * 1944-10-05 1947-12-03 Harold Ernest Gresham Improvements relating to heat treatment of light metals and alloys
US2174840A (en) * 1939-10-03 Electrical condenser
FR985918A (en) * 1943-11-11 1951-07-25 Alais & Froges & Camarque Cie Process for improving oxide layers obtained on aluminum and its alloys by electrolytic means
US2851626A (en) * 1952-10-28 1958-09-09 Gen Electric Co Ltd Cathode ray tubes
US2943031A (en) * 1953-08-12 1960-06-28 Rca Corp Electrodes and methods of making same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103498181A (en) * 2013-09-04 2014-01-08 沈阳理工大学 Preparation method of self-lubricating wear-resistant coating on surfaces of titanium and titanium alloy

Also Published As

Publication number Publication date
US3488262A (en) 1970-01-06
SE334079B (en) 1971-04-05
DE1621078B2 (en) 1976-11-18
DE1621078A1 (en) 1971-04-15
BE701076A (en) 1967-12-18
NL6709471A (en) 1968-01-15

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