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US 2018/0057946 A1Published application
Conversion coating and method of making
AssigneeSaint-Gobain Performance Plastics Corporation
InventorsNazila DADVAND, Nafih MEKHILEF, Yi JIANG, Raymond J. WHITE
Life of this patent
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Abstract
A composite can include a substrate and a conversion coating overlying the substrate and comprising at least one of a zirconium oxide, a hafnium oxide, or a combination thereof. The conversion coating can be formed from a zirconia or hafnia-based complex obtained by reacting at least one of a zirconium ion source, a hafnium ion source, or a combination thereof, with a chelating compound in a reaction and another chelating compound in another reaction.
Claims20
A composite comprising:
- a substrate;
- and
- a conversion coating overlying the substrate and comprising at least one of a zirconium oxide, a hafnium oxide, or a combination thereof;
- the conversion coating formed from a zirconia or hafnia-based complex obtained by reacting a zirconium ion source, a hafnium ion source, or a combination thereof, with a first chelating compound in a first reaction and a second chelating compound in a subsequent second reaction.
1 more element
A method of forming a composite, comprising:
- preparing a zirconia or hafnia-based complex by reacting at least one of a zirconium ion source, a hafnium ion source, or a combination thereof, with a first chelating compound in a first reaction and a second chelating compound in a subsequent second reaction;
- and
- exposing a substrate to the zirconia or hafnia-based complex to form a conversion coating overlying the substrate and comprising at least one of a zirconium oxide, a hafnium oxide, or a combination thereof.
A composite comprising:
- a substrate;
- and
- a conversion coating overlying the substrate and comprising at least one of a zirconium oxide, a hafnium oxide, or a combination thereof;
- the composite exhibiting a corrosion resistance Rt of at least 3000 Ω·cm2, measured at 0.01 Hz;
- and
- the composite exhibiting a peel strength of at least 140 N.
3 more elements
Dependencies are inferred from the claim text.