Sintered article and sintering method, particularly for low esr capacitor anodes
AssigneeEvans Capacitor Company Incorporated
InventorDavid A. EVANS
Life of this patent
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Abstract
A method of making a sintered article in which a solid object is embedded includes forming a green body of compressed particles with the solid body is partially embedded. The green body includes an opening across which the solid body extends. The green body is sintered to form a sintered body and the opening permits deformation of the solid body in response to stress applied during the sintering process. A sintered article in which a solid body is at least partially embedded includes an opening. The solid body extends across the opening so that the solid body can deform within the opening. The opening in the solid body prevents distortion of the sintered body from a planar configuration during sintering, even when the green body is relatively thin.
Claims23
A sintered valve metal anode precursor for a capacitor comprising:
- a sintered body of particles of a valve metal, the sintered body having an area and a thickness that is measured transverse to the area, wherein the sintered body includes an opening extending into the thickness of the sintered body;
- and
- a solid body located at least partially within the sintered body and extending across the opening in the sintered body.
A method of making a sintered valve metal anode precursor for a capacitor, the method comprising:
- compressing particles of a valve metal together to form a green body having an area, a thickness that is measured transverse to the area, an opening extending into the thickness of the green body, and a solid body at least partially within the green body and extending across the opening in the green body;
- and
- sintering the green body so that the particles of the valve metal form a sintered body and stress applied to the solid body in the sintering is relieved by deformation of the solid body in the opening.
A sintered article comprising:
- a sintered body of particles of a material, the sintered body having an area and a thickness that is measured transverse to the area, wherein the sintered body includes an opening extending into the thickness of the sintered body;
- and
- a solid body located at least partially within the sintered body and extending across the opening in the sintered body.
A method of making a sintered article comprising:
- compressing particles of a material together to form a green body having an area, a thickness that is measured transverse to the area, an opening extending into the thickness of the green body, and a solid body at least partially within the green body and extending across the opening in the green body;
- and
- sintering the green body so that the particles of the material form a sintered body and stress applied to the solid body in the sintering is relieved by deformation of the solid body in the opening.
Dependencies are inferred from the claim text.