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Mixture for producing fracture-resistant, fiber-reinforced ceramic material by microwave heating
| Details |
Inventors: Meek, Thomas T.; Blake, Rodger D.;
Assignee: The United States of America as represented by the United States (Washington, DC)
Primary Examiner: Leung; Philip H.
Assistant Examiner:
Attorney, Agent or Firm: Hageman; Joseph M., Wilson; Ray G., Hightower; Judson R.
A fracture-resistant, fiber-reinforced ceramic substrate is produced by a method which involves preparing a ceramic precursor mixture comprising glass material, a coupling agent, and resilient fibers, and then exposing the mixture to microwave energy. The microwave field orients the fibers in the resulting ceramic material in a desired pattern wherein heat later generated in or on the substrate can be dissipated in a desired geometric pattern parallel to the fiber pattern. Additionally, the shunt capacitance of the fracture-resistant, fiber-reinforced ceramic substrate is lower which provides for a quicker transit time for electronic pulses in any conducting pathway etched into the ceramic substrate. |
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DETAILED DESCRIPTION To achieve the foregoing and other objects, and in accordance with the purposes of the present invention, as embodied and broadly described herein, the method of this invention may comprise preparing a ceramic prescursor mixture comprising glass material, a coupling agent, and resilient fibers; enclosing the mixture within an insulative material; microwaving said mixture at a power, time, and frequency sufficient to bond ceramic material to the fibers; and allowing the material to cool thereby securing a fracture-resistant, fiber-reinforced ceramic material.
The present invention may also comprise, in accordance with its objects and purposes, a fracture-resistant, fiber-reinforced material produced by a method comprising the steps of preparing a ceramic precursor mixture comprising glass material, a coupling agent, and resilient fibers; enclosing the mixture within an insulative material; microwaving the mixture at a power, time, and frequency sufficient to bond ceramic material to the fibers; and allowing the material to cool, thereby securing a fracture-resistant, fiber-reinforced ceramic material.
Additionally, the present invention may also comprise, in accordance with its objects and purposes, the fracture-resistant, fiber-reinforced ceramic substrate wherein the fibers are oriented in such a manner that the heat generated in or on the substrate is dissipated in a desired geometric pattern parallel to the fiber pattern.
Finally, the present invention may also compromise, in accordance with its objects and purposes, the fracture-resistant, fibver reinforced ceramic substrate whose shunt capacitance value for a conducting pathway is lower than the same ceramic material without fibers.
An advantage of the present invention is derived from the significant time and energy savings compared to conventional, i.
e.
, radiant, heating methods for manufacturing eramic subdstrates.
Still another advantage of the present invention is the greater strength present in any cerammic material manufactured with resilient fibers included
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