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GB1001006A - Cleaning magnesium articles - Google Patents

Cleaning magnesium articles

Info

Publication number
GB1001006A
GB1001006A GB4024162A GB4024162A GB1001006A GB 1001006 A GB1001006 A GB 1001006A GB 4024162 A GB4024162 A GB 4024162A GB 4024162 A GB4024162 A GB 4024162A GB 1001006 A GB1001006 A GB 1001006A
Authority
GB
United Kingdom
Prior art keywords
concentration
immersing
temperature
cleaning
acid
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
GB4024162A
Inventor
Donald Jack Levy
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.)
Dow Chemical Co
Original Assignee
Dow Chemical Co
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 Dow Chemical Co filed Critical Dow Chemical Co
Priority to GB4024162A priority Critical patent/GB1001006A/en
Publication of GB1001006A publication Critical patent/GB1001006A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C23COATING 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
    • C23GCLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G1/00Cleaning or pickling metallic material with solutions or molten salts
    • C23G1/02Cleaning or pickling metallic material with solutions or molten salts with acid solutions
    • C23G1/12Light metals
    • CCHEMISTRY; METALLURGY
    • C23COATING 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
    • C23FNON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F3/00Brightening metals by chemical means
    • C23F3/02Light metals
    • C23F3/03Light metals with acidic solutions

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)

Abstract

A metal article composed of at least 75% magnesium is cleaned by immersing it in an aqueous solution containing nitric acid, e.g. of concentration between 0.1 and 2 N, a nitrate of ammonium, an alkali or alkaline earth metal preferably Mg(NO3)2 e.g. of concentration between 0.3 and 5 N; and a carboxylic or hydroxycarboxylic acid or a water-soluble ammonium or alkali metal salt thereof preferably glycollic acid e.g. of concentration between 0.5 and 5 N, for 0.1-10 minutes at a temperature between 18 DEG C. and 65 DEG C. Many examples of organic compounds are specified. Prior to cleaning, the article may be degreased by immersing it in an aqueous alkaline solution e.g. containing 15-30 g./l. NaOH and 22-30 g./l. Na2CO3 at a temperature of 82-93 DEG C., followed by water rinsing.
GB4024162A 1962-10-24 1962-10-24 Cleaning magnesium articles Expired GB1001006A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4024162A GB1001006A (en) 1962-10-24 1962-10-24 Cleaning magnesium articles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4024162A GB1001006A (en) 1962-10-24 1962-10-24 Cleaning magnesium articles

Publications (1)

Publication Number Publication Date
GB1001006A true GB1001006A (en) 1965-08-11

Family

ID=10413914

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4024162A Expired GB1001006A (en) 1962-10-24 1962-10-24 Cleaning magnesium articles

Country Status (1)

Country Link
GB (1) GB1001006A (en)

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