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US 2014/0360407 A1Published application
Yttrium oxide coating film
AssigneeFujimi Incorporated
InventorsJunya Kitamura, Hiroaki Mizuno, Filofteia-Laura Toma, Stefan Langner, Lutz-Michael Berger, Annegret Potthoff
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Abstract
An yttrium oxide coating has a porosity of 1.5% or less and contains monoclinic yttrium oxide at a ratio of 1% or more and 30% or less to the sum of monoclinic yttrium oxide and cubic yttrium oxide in the coating. The coating is formed, for example, by thermal spraying a thermal spraying material containing yttrium oxide particles and a dispersion medium.
Claims10
An yttrium oxide coating, wherein
- the coating has a porosity of 1.5% or less, and
- the coating contains monoclinic yttrium oxide at a ratio of 1% or more and 30% or less to the sum of monoclinic yttrium oxide and cubic yttrium oxide in the coating.
A thermal spraying material comprising yttrium oxide particles and a dispersion medium, wherein
- when the thermal spraying material is thermally sprayed by a high-velocity oxygen-fuel spraying method onto a substrate made of aluminum alloy plate that has been sand blasted with a brown alumina abrasive (A#40), a resultant coating on the substrate has a porosity of 1.5% or less, and
- the coating contains monoclinic yttrium oxide at a ratio of 1% or more and 30% or less to the sum of monoclinic yttrium oxide and cubic yttrium oxide in the coating.
Dependencies are inferred from the claim text.