OPTICAL ELEMENT MOLDING DIE

PROBLEM TO BE SOLVED: To improve the durability and releasability of a molding die and to avoid fusion to glass by forming a film of oxide of the same element as the principal component of the base material of the die on at least the molding surface of the base material, an alumina film on the oxide...

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Bibliographische Detailangaben
1. Verfasser:	HIJINO MASAMICHI
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMICAL SURFACE TREATMENT CHEMISTRY CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS 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 GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS GLASS INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES METALLURGY MINERAL OR SLAG WOOL SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To improve the durability and releasability of a molding die and to avoid fusion to glass by forming a film of oxide of the same element as the principal component of the base material of the die on at least the molding surface of the base material, an alumina film on the oxide film and an aluminum nitride film on the alumina film. SOLUTION: An oxide film has a great affinity for an alumina film and high adhesive strength is ensured. Diffusion due to A1 common to the alumina film and an aluminum nitride film is caused between the films and high adhesion is ensured because of the common element. The aluminum nitride film is excellent in releasability to glass and does not cause fusion to glass. The oxide film is preferably formed by oxygen ion implantation. When the films are formed by treatments in the same system, dynamic mixing is preferably adopted.