Protective alumina film and production method thereof

Details Protective alumina film and production method thereof Protective alumina film and production method thereof

2011-06-07

2011-06-07

Austin, Aaron (Department: 1784)

Stock material or miscellaneous articles

Composite

Of inorganic material

C428S469000, C428S702000, C428S212000, C428S216000, C428S697000, C427S255190, C427S248100

Reexamination Certificate

active

07955722

ABSTRACT:
Provided is a protective alumina film mainly containing alumina in the α-crystal structure and fine crystal grains in which one or more regions containing additionally an element other than aluminum formed along the planes in the direction almost perpendicular to the thickness direction of the protective film are present intermittently in the thickness direction inside the protective film.

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