METHOD AND DEVICE FOR TREATMENT OF BASE BOARD

PURPOSE:To dewater a board for a magnetic disc thoroughly and to produce a board coated with chromic acid film having stable quality, by subjecting the board to a chromic acid film treatment then washing the same with pure water and dewatering the same and further removing the water drops, etc. stuc...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	SAWASE FUMIHIKO, TAKAHASHI NOBUO, MAEDA FUJIO
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 INFORMATION STORAGE INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL METALLURGY PHYSICS SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION
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