SURFACE TREATMENT WITH CORROSION RESISTANT FILM

PURPOSE:To form a film having superior corrosion and heat resistances by adding a compound of a light metallic element to a soln. contg. a silicon compound or further contg. a boron compound and by using the resulting mixed treating soln. adjusted to a specified pH. CONSTITUTION:A soln. of silicic a...

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Bibliographische Detailangaben
Hauptverfasser:	MORIYA TADAO, MORIYA KIMIO, HIRAI KATSUHIKO
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL DIFFUSION TREATMENT OF METALLIC MATERIAL INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL METALLURGY SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION
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Beschreibung
Zusammenfassung:	PURPOSE:To form a film having superior corrosion and heat resistances by adding a compound of a light metallic element to a soln. contg. a silicon compound or further contg. a boron compound and by using the resulting mixed treating soln. adjusted to a specified pH. CONSTITUTION:A soln. of silicic acid or a silicate such as sodium silicate or a mixture of the soln. with a soln. of a boron compound such as boric acid is mixed with a soln. contg. one or more kinds of compounds of light metallic elements such as Al, K, Ca and Na, e.g., aluminum sulfate. A soln. contg. Sn or a transition element such as Ti, Cr or Ni may be further added as required. The resulting mixed treating soln. adjusted to >=10pH is applied to a body to be treated or the body is immersed in the soln. to form a film. By this surface treatment, microcracks in the surface of the body are filled and the corrosion and heat resistances can be improved.