Method for brazing ceramic surfaces
AssigneeEADS Space Transportation GmbH
InventorsSteffen Beyer, Stephan Schmidt, Jan Hauptmann, Gunter Kirchhoff, Erich Lugscheider
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Abstract
A method for producing a brazed joint having at least one of a metal/ceramic joint and a ceramic/ceramic joint. The method includes forming bores in at least one ceramic surface to be brazed, and the bores have an average diameter of greater than 550 μm. The instant abstract is neither intended to define the invention disclosed in this specification nor intended to limit the scope of the invention in any way.
Claims22
A method for producing a brazed joint having at least one of a metal/ceramic joint and a ceramic/ceramic joint, the method comprising:
- forming bores in at least one ceramic surface to be brazed;
- and
- forming a brazed joint,
- wherein the bores have an average diameter of greater than 550 μm, and
- wherein at least one of:
- the bores comprise at least two classes of bores;
- the bores have an alternating bore depth;
- and
- the bores comprise geometric groupings of bores.
A method for producing a brazed joint having at least one of a metal/ceramic joint and a ceramic/ceramic joint, the method comprising:
- forming bores in at least one ceramic surface to be brazed;
- and
- forming a brazed joint,
- wherein the bores have an average diameter of greater than 550 μm, and
- wherein at least two classes of bores are formed and the bores of one class differ from the bores of another class at least in one of bore geometry, bore diameter, and bore depth.
A method for producing a brazed joint having at least one of a metal/ceramic joint and a ceramic/ceramic joint, the method comprising:
- forming bores in at least one ceramic surface to be brazed;
- and
- forming a brazed joint,
- wherein at least two classes of bores are formed and the bores of one class differ from the bores of another class at least in one of bore geometry, bore diameter, and bore depth.
A method for producing a brazed joint having at least one of a metal/ceramic joint and a ceramic/ceramic joint, the method comprising:
- forming bores in at least one ceramic surface to be brazed;
- and
- producing a brazed joint with a fiber-reinforced ceramic material with a laminate structure of several layers with different periodically recurring fiber orientation,
- wherein the bores have an average diameter of greater than 550 μm, and
- wherein the bores are formed with a bore depth that is equal to or greater than a spacing from the surface of the ceramic material to the layer of the laminate structure that has the same fiber orientation as an uppermost layer of the laminate structure.
A method for producing a brazed joint having at least one of a metal/ceramic joint and a ceramic/ceramic joint, the method comprising:
- forming bores in at least one ceramic surface to be brazed;
- and
- producing a brazed joint with a fiber-reinforced ceramic material,
- wherein the bores have an average diameter of greater than 550 μm, and
- wherein a spacing between the bores is at least a bore diameter plus 5 times a diameter of a fiber of the fiber-reinforced ceramic material.
A method for producing a brazed joint having at least one of a metal/ceramic joint and a ceramic/ceramic joint, the method comprising:
- forming bores in at least one ceramic surface to be brazed;
- and
- producing a brazed joint with a fiber-reinforced ceramic material,
- wherein the bores have an average diameter of greater than 550 μm, and
- wherein a spacing between the bores is at least a bore diameter plus at least 10 times a diameter of a fiber of the fiber-reinforced ceramic material.
A method for producing a brazed joint having at least one of a metal/ceramic joint and a ceramic/ceramic joint, the method comprising:
- forming bores in at least one ceramic surface to be brazed;
- and
- producing a brazed joint with a fiber-reinforced ceramic material,
- wherein the bores have an average diameter of greater than 550 μm, and
- wherein a spacing between the bores is at least a bore diameter plus at least 25 times a diameter of a fiber of the fiber-reinforced ceramic material.
A process for producing a brazed joint comprising:
- brazing a first component to a portion of a second ceramic component having bores with an average diameter of greater than 550 μm,
- wherein at least one of:
- the second ceramic component comprises a laminate structure of several layers and the bores comprise a bore depth that is greater than a thickness an outermost layer of the ceramic;
- and
- the second ceramic component comprises a ceramic element of a rocket engine and a center-to-center spacing of the bores is at least a bore diameter plus five times a diameter of a fiber of the ceramic.
A process for producing a brazed joint comprising:
- brazing a first component to a portion of a second ceramic component having bores with an average diameter of greater than 550 μm,
- wherein at least two classes of bores are formed and the bores of one class differ from the bores of another class at least in one of bore geometry, bore diameter, and bore depth.
A process for producing a brazed joint comprising:
- brazing a first component to a portion of a second ceramic component having bores composed of at least two classes of bores, in which the bores of one class differ from the bores of another class at least in one of bore geometry, bore diameter, and bore depth.
A method for producing a brazed joint having at least one of a metal/ceramic joint and a ceramic/ceramic joint, the method comprising:
- forming bores in at least one ceramic surface to be brazed;
- and
- forming a brazed joint,
- wherein the bores have an average diameter of greater than 550 μm,
- wherein at least one of:
- the bores comprise at least two classes of bores;
- the bores have an alternating bore depth;
- the bores comprise geometric groupings of bores;
- and
- a bore spacing is between 50% and 150% of a bore depth, and
- wherein the at least one ceramic surface is arranged on a ceramic element of a rocket engine.
A method for producing a brazed joint having at least one of a metal/ceramic joint and a ceramic/ceramic joint, the method comprising:
- forming bores in at least one ceramic surface to be brazed;
- and
- forming a brazed joint,
- wherein the bores have an average diameter of greater than 550 μm,
- wherein at least one of:
- the bores comprise at least two classes of bores;
- the bores have an alternating bore depth;
- the bores comprise geometric groupings of bores;
- and
- a bore spacing is between 50% and 150% of a bore depth, and
- wherein a center-to-center spacing of the bores is at least a bore diameter plus five times a diameter of a fiber of the ceramic.
Dependencies are inferred from the claim text.