CORROSION-RESISTANT MEMBER AND ITS MANUFACTURING METHOD

PROBLEM TO BE SOLVED: To provide a corrosion-resistant member having excellent corrosion resistance and adhesivity to a base material while the size of a void is controlled, and to provide its manufacturing method. SOLUTION: A corrosion-resistant member to be used in a corrosive circumstance compris...

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Bibliographische Detailangaben
Hauptverfasser:	OTAKI HIROMICHI, UMEKI TOSHIYA, SAKAMAKI MAKOTO
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS 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 ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ELECTRICITY INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL METALLURGY SEMICONDUCTOR DEVICES SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a corrosion-resistant member having excellent corrosion resistance and adhesivity to a base material while the size of a void is controlled, and to provide its manufacturing method. SOLUTION: A corrosion-resistant member to be used in a corrosive circumstance comprises a base material and a sprayed ceramic coating film having a relative density of ≥80% and covering a part or the whole of the surface of the base material, and the maximum void diameter of voids being present in the surface of the sprayed ceramic coating film is ≤25 Vm. The corrosion-resistant member is obtained by using a Y2O3material having a bulk density of ≥1.5 g/cm3as a raw material and having been so dried as to have a water content of ≤1%, and conducting plasma spraying to the base material with an output of 40 to 110 kW by the use of a thermal spraying apparatus having two anode torches. COPYRIGHT: (C)2006,JPO&NCIPI