FR2549086B1 - PROCESS FOR DRY PASSIVATION OF MAGNESIUM IN DIVIDED CONDITIONS - Google Patents

PROCESS FOR DRY PASSIVATION OF MAGNESIUM IN DIVIDED CONDITIONS

Info

Publication number
FR2549086B1
FR2549086B1 FR8310610A FR8310610A FR2549086B1 FR 2549086 B1 FR2549086 B1 FR 2549086B1 FR 8310610 A FR8310610 A FR 8310610A FR 8310610 A FR8310610 A FR 8310610A FR 2549086 B1 FR2549086 B1 FR 2549086B1
Authority
FR
France
Prior art keywords
magnesium
dry
atmosphere
magnesium alloy
passivation
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
FR8310610A
Other languages
French (fr)
Other versions
FR2549086A1 (en
Inventor
Jean-Pierre Castera
Jean Desbrest
Pierre Mauret
Jean Moyen
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.)
Ferropem SAS
Original Assignee
Pechiney Electrometallurgie SAS
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 Pechiney Electrometallurgie SAS filed Critical Pechiney Electrometallurgie SAS
Priority to FR8310610A priority Critical patent/FR2549086B1/en
Priority to DE8484420104T priority patent/DE3461992D1/en
Priority to AT84420104T priority patent/ATE24853T1/en
Priority to EP84420104A priority patent/EP0129491B1/en
Publication of FR2549086A1 publication Critical patent/FR2549086A1/en
Application granted granted Critical
Publication of FR2549086B1 publication Critical patent/FR2549086B1/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
    • C23F—NON-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
    • C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
    • C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
    • C23F11/18—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids using inorganic inhibitors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B22F1/14—Treatment of metallic powder
    • B22F1/145—Chemical treatment, e.g. passivation or decarburisation

Abstract

1. A process for dry passivation of magnesium or magnesium alloy in the divided state characterised in that the magnesium or the magnesium alloy is brought into intimate contact with a corrosion inhibitor in the finely powdered state, formed by a mineral compound whose cation is selected from zinc, cadmium, barium, lead and tin and whose anion is selected from chromate, bichromate, permanganate, chlorate, perchlorate, vanadates, phosphates, fluorophosphate, fluoride, and borates, the contacting operation being carried out in three successive stages : in a dry atmosphere, then in an atmosphere which is saturated with water vapour but in the absence of water in the liquid state and finally in a dry atmosphere.
FR8310610A 1983-06-21 1983-06-21 PROCESS FOR DRY PASSIVATION OF MAGNESIUM IN DIVIDED CONDITIONS Expired FR2549086B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
FR8310610A FR2549086B1 (en) 1983-06-21 1983-06-21 PROCESS FOR DRY PASSIVATION OF MAGNESIUM IN DIVIDED CONDITIONS
DE8484420104T DE3461992D1 (en) 1983-06-21 1984-06-19 Dry-passivating process for finely divided magnesium
AT84420104T ATE24853T1 (en) 1983-06-21 1984-06-19 DRY PASSIVATION PROCESS FOR SPLIT MAGNESIUM.
EP84420104A EP0129491B1 (en) 1983-06-21 1984-06-19 Dry-passivating process for finely divided magnesium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8310610A FR2549086B1 (en) 1983-06-21 1983-06-21 PROCESS FOR DRY PASSIVATION OF MAGNESIUM IN DIVIDED CONDITIONS

Publications (2)

Publication Number Publication Date
FR2549086A1 FR2549086A1 (en) 1985-01-18
FR2549086B1 true FR2549086B1 (en) 1987-02-20

Family

ID=9290212

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8310610A Expired FR2549086B1 (en) 1983-06-21 1983-06-21 PROCESS FOR DRY PASSIVATION OF MAGNESIUM IN DIVIDED CONDITIONS

Country Status (4)

Country Link
EP (1) EP0129491B1 (en)
AT (1) ATE24853T1 (en)
DE (1) DE3461992D1 (en)
FR (1) FR2549086B1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU599415B2 (en) * 1987-08-31 1990-07-19 Nippon Paint Co., Ltd. Metal particle
DE3908815A1 (en) * 1989-03-17 1990-09-20 Sueddeutsche Kalkstickstoff METHOD FOR PASSIVATING PYROPHORIC METALS
US20130014670A1 (en) * 2010-04-01 2013-01-17 Commissariat a I'Energie Atomique et Aux Energies Altematives Use of anticorrosion agents for conditioning magnesium metal, conditioning material thus obtained and preparation process

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB562469A (en) * 1942-12-21 1944-07-03 Charles Georges Six A process for the production of light metal powders
GB700694A (en) * 1950-03-10 1953-12-09 Nitroglycerin Ab Method of inhibiting aluminium powder from reacting with water
FR1270661A (en) * 1960-07-21 1961-09-01 Commissariat Energie Atomique New process for the preparation of masses based on compressed magnesium powder
FR1292322A (en) * 1961-03-03 1962-05-04 Commissariat Energie Atomique Process for the preparation of masses based on fluorinated and compressed magnesium powder
DE1294139B (en) * 1962-12-13 1969-04-30 Walter Marx & Co Kg Process for the chemical oxidation of powdery aluminum or magnesium and alloys of the metals mentioned
FR2352895A1 (en) * 1976-04-21 1977-12-23 Diversey France NEW PROCESS FOR TREATMENT OF METAL SURFACES BY MEANS OF OXYFLUORINE COMPOUNDS OF PHOSPHORUS 5

Also Published As

Publication number Publication date
DE3461992D1 (en) 1987-02-19
EP0129491A1 (en) 1984-12-27
FR2549086A1 (en) 1985-01-18
ATE24853T1 (en) 1987-01-15
EP0129491B1 (en) 1987-01-14

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Legal Events

Date Code Title Description
CD Change of name or company name
ST Notification of lapse