Molding core
AssigneeAsia Optical Co., Inc.
InventorJui-Fen Pai
Life of this patent
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Abstract
A molding core includes: a substrate having a roughened article-shaping surface; and a hard coating formed on the roughened article-shaping surface of the substrate and including a protective film that comprises a metal complex of carbon and at least one noble metal selected from the group consisting of Pt, Ir, Ru, Re, Rh, Ta, and Os. The protective film has a thickness greater than 5 μm so as to increase the number of times that the protective film can be repaired. Combination of the noble metal and carbon can prevent the noble metal of the protective film from reacting with carbon of a diamond tool during turning process.
Claims20
A molding core for a press-molding mold, comprising:
- a substrate having a roughened article-shaping surface;
- and
- a hard coating formed on said roughened article-shaping surface of said substrate and including a protective film that comprises a metal complex of carbon and at least one first noble metal selected from the group consisting of Pt, Ir, Ru, Re, Rh, Ta, and Os;
- wherein said protective film has a thickness greater than 5 μm.
A molding core for a press-molding mold, comprising:
- a substrate;
- and
- a hard coating formed on said substrate and including a protective film that comprises a metal complex of carbon, at least one first noble metal, and at least one second noble metal;
- wherein at least one of the electrons in the outermost D orbit of the atom of said first noble metal is unpaired, and all of the electrons in the outermost D orbit of the atom of said second noble metal are paired.
Dependencies are inferred from the claim text.