Methods for forming an oxide-dispersion strengthened coating
AssigneeGeneral Electric Company
InventorsDavid Andrew Helmick, George Albert Goller, Raymond Joseph Stonitsch
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Abstract
A method for forming an oxide-dispersion strengthened coating on a metal substrate is disclosed. The method generally includes comminuting MCrAlY alloy particles to form an oxygen-enriched powder, wherein at least about 25% by volume of the MCrAlY alloy particles within the oxygen-enriched powder have a particle size of less than about 5 μm. Additionally, the method includes applying the oxygen-enriched powder to the metal substrate to form a coating and heating the oxygen-enriched powder to precipitate oxide dispersoids within the coating.
Claims20
A method for forming an oxide-dispersion strengthened coating on a metal substrate, the method comprising:
- comminuting MCrAlY alloy particles to form comminuted powder, wherein at least 25% by volume of the MCrAlY alloy particles within the oxygen-enriched comminuted powder have a particle size of less than 5 μm;
- mixing the comminuted powder with additional MCrAlY alloy particles to form a powder mixture, at least 90% by volume of the additional MCrAlY alloy particles having a particle size of greater than 5 μm;
- applying the powder mixture to the metal substrate to form a coating;
- and
- heating the powder mixture to precipitate oxide dispersoids within the coating.
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A method for forming an oxide-dispersion strengthened coating on a metal substrate, the method comprising:
- comminuting MCrAlY alloy particles to form comminuted powder, wherein at least about 25% by volume of the MCrAlY alloy particles within the comminuted powder have a particle size of less than 5 μm;
- mixing the comminuted powder with additional MCrAlY alloy particles to form powder mixture, at least 90% by volume of the additional MCrAlY alloy particles having a particle size of ranging from 55 μm to 110 μm;
- applying the powder mixture to the metal substrate to form a coating;
- and
- heating the powder mixture to precipitate oxide dispersoids within the coating.
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Dependencies are inferred from the claim text.