Filters
Results 1 - 1 of 1
Results 1 - 1 of 1.
Search took: 0.024 seconds
Caillat, R.; Darras, R.; Leclercq, D.
CEA Saclay, 91 - Gif-sur-Yvette (France)1960
CEA Saclay, 91 - Gif-sur-Yvette (France)1960
AbstractAbstract
[en] The maximum temperature (350 deg. C) of magnesium corrosion resistance in wet air may be raised to 490-500 deg. C by the formation of a superficial fluoride film. This can be obtained by two different ways: either by addition of hydrofluoric acid to the corroding medium in a very small proportion such as 0,003 mg/litre; at atmospheric pressure, or by dipping the magnesium in a dilute aqueous solution of nitric and hydrofluoric acids at room temperature before exposing it to the corroding atmosphere. In both cases the corrosion inhibition is effective over a very long time, even several thousand hours. (author)
[fr]
La temperature limite (350 deg. C) de resistance du magnesium a la corrosion par l'air humide, peut etre elevee jusque 490-500 deg. C par la formation d'une couche fluoruree superficielle. Deux procedes permettent d'obtenir ce resultat: l'atmosphere corrodante peut etre additionnee d'acide fluorhydrique a une concentration aussi faible que 0,003 mg/litre, a la pression atmospherique, ou bien le magnesium peut etre traite a froid, avant exposition a la corrosion, dans une solution aqueuse diluee d'acides nitrique et fluorhydrique. Dans les deux cas, la protection est assuree, meme pour de tres longues durees d'exposition: plusieurs milliers d'heures. (auteur)Original Title
Inhibition de la corrosion du magnesium chauffe dans l'air humide, par fluoruration superficielle
Primary Subject
Source
1960; 14 p; 3rd Annual Symposium of Metallurgy; 3. colloque annuel de metallurgie - corrosion; Saclay (France); 1957; 5 refs.
Record Type
Report
Literature Type
Conference
Report Number
Country of publication
ALKALINE EARTH METAL COMPOUNDS, ALKALINE EARTH METALS, CHALCOGENIDES, COATINGS, ELEMENTS, FILMS, FLUORIDES, FLUORINE COMPOUNDS, HALIDES, HALOGEN COMPOUNDS, HYDROGEN COMPOUNDS, INORGANIC ACIDS, INORGANIC COMPOUNDS, MAGNESIUM COMPOUNDS, METALS, MOISTURE, OXIDES, OXYGEN COMPOUNDS, PHOTOGRAPHY, TEMPERATURE RANGE, TESTING
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue