Pre-formulated powder feedstock
AssigneeOerlikon Metco (US) Inc.
InventorsBrian Callen, Jing Liu, Montia Nestler, Eugene Stelmack, Mathias Runte
Life of this patent
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Abstract
A powder composition adapted for use in suspension thermal spray coating processes. The powder includes agglomerated and/or non-agglomerated particles having at least one dispersing agent deposited thereon. The composition results in a homogeneous, stable suspension when combined with a liquid carrier for use in suspension thermal spray coating processes.
Claims36
A powder composition adapted for use in suspension thermal spray coating processes, wherein the powder composition comprises primary particles having at least one dispersing agent deposited thereon, the composition resulting in a homogeneous, stable suspension when combined with a liquid carrier use in suspension thermal spray processes, wherein the dispersing agent is 2-[2-(2-methoxyethoxy) ethoxy] acetic acid, and the primary particles comprise at least one of:
- oxides of aluminum, zirconium, titanium, chromium, manganese cobalt, yttrium, lanthanum, lanthanum strontium, manganese, manganese cobalt iron, dysprosium;
- carbides of titanium, tantalum, tungsten, chromium, vanadium, nickel;
- lanthanum strontium manganite, pure metal and/or alloys based on nickel, cobalt iron, chromium, aluminum, copper;
- yttrium fluoride, lanthanum strontium cobalt ferrite, zirconia gadolinia ytterbia yttria, gadolinium zirconate, lanthanum strontium maganate, lanthanum strontium cobalt ferrite;
- zirconia stabilized with magnesia, calcia, dysprosia, yttria, ceria, vtterbia;
- ytterbium zirconate, strontium, and mixtures and/or composites thereof.
A homogenous, stable suspension used in suspension spray coating processes, wherein the suspension comprises (a) a powder composition comprising primary particles having at least one dispersing agent thereon and (b) a liquid carrier;
- the dispersing agent is a polymer salt, an inorganic salt, a non-ionic organic compound, and/or acid or base that produces dispersion effect through pH adjustment and is present in an amount of up to about 10% by weight;
- the liquid carrier is a liquid selected form the group consisting of water, a ketone, an alcohol, a glycol, an aliphatic hydrocarbon, and combinations thereof;
- and the primary particles comprise at least one of:
- oxides of aluminum, zirconium, titanium, chromium, manganese cobalt, yttrium, lanthanum, lanthanum strontium, manganese, manganese cobalt iron, dysprosium;
- carbides of titanium, tantalum, tungsten, chromium, vanadium, nickel;
- lanthanum strontium manganite, pure metal and/or alloys based on nickel, cobalt iron, chromium, aluminum, copper;
- yttrium fluoride, lanthanum strontium cobalt ferrite, zirconia gadolinia ytterbia yttria, gadolinium zirconate, lanthanum strontium maganate, lanthanum strontium cobalt ferrite;
- zirconia stabilized with magnesia, calcia, dysprosia, yttria, ceria, vtterbia;
- ytterbium zirconate, strontium, and mixtures and/or composites thereof.
A homogenous, stable suspension used in suspension spray coating processes, wherein the suspension comprise (a) a powder composition comprising primary particles having at least one dispersing agent deposited thereon, wherein the dispersing agent is 2-[2-(2-methoxyethoxy) ethoxy] acetic acid and is present in an amount of up to about 10% by weight, and (b) a liquid carrier[[;
- the dispersing agent is 2-[2-(2-methoxyethoxy) ethoxy] acetic acid, and is present in an amount of up to about 10% by weight and]] wherein the liquid carrier is an organic liquid.
Dependencies are inferred from the claim text.