Intellectual Property Office

Non-Confidential Disclosures

Lamination Ceramic Cutting tool

PSU Invention Disclosure No. 1076

Field of the Invention:

laminated ceramic cutting tool

Inventors:

M.F. Amateau

Patent status:

Issued Patent No. 5,855,997

Invention description:

A reinforced, laminated ceramic cutting tool has a core layer and at least two outer layers. The core layer and the outer layers, either alone or in combination, contain a reinforcement consisting of reinforcement particles, reinforcement whiskers or reinforcement platelets. When whiskers are used, the bulk of the whiskers are arranged so that a longitudinal dimension of each whisker is aligned substantially perpendicular to a flank face on the cutting tool. Likewise, when reinforcement platelets are used, the bulk of the platelets are oriented so that a basal plane of each platelet is in a plane substantially perpendicular to the flank face. Each outer layer has residual stresses in directions perpendicular to and parallel to the flank face, and each outer layer has the same thickness, composition and residual stresses as the other outer layer. Processes for making a laminated ceramic cutting tool, and products of those processes, are also disclosed.

Contact:

Mr. Bradley A. Swope
Sr. Licensing Officer
Intellectual Property Office
The Pennsylvania State University
113 Technology Center
University Park, PA 16802-7000
Phone: (814) 863-5987
Fax: (814) 865-3591
E-mail: bradswope@psu.edu