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DISCOVERING NEW RARE CUTTING RESTRICTION ENZYMES

Award Information
Agency: Department of Health and Human Services
Branch: N/A
Contract: N/A
Agency Tracking Number: 1R43GM060128-01
Amount: $94,450.00
Phase: Phase I
Program: SBIR
Solicitation Topic Code: N/A
Solicitation Number: N/A
Timeline
Solicitation Year: N/A
Award Year: 1999
Award Start Date (Proposal Award Date): N/A
Award End Date (Contract End Date): N/A
Small Business Information
32 TOZER RD
BEVERLY, MA 01915
United States
DUNS: N/A
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 ELISABETH RALEIGH
 () -
Business Contact
Phone: (978) 927-5054
Email: IRELAND@NEB.COM
Research Institution
N/A
Abstract

Not Available A method is proposed for production of high density, refractory ceramic materials using Selective Laser Sintering (SLS). Conventional methods of solid freeform fabrication have been used to produce ceramic materials, but it is difficult to make a material that sinters to its full density without deformation due to shrinkage. SLS is useful in producing intricate parts while overcoming these problems, but because of the low packing density of the powder beds being sintered, a porous ceramic results. By using a green material in the SLS, process with a higher packing density, an improved ceramic material will be obtained. Zirconia promises to be a good material for fabrication of parts that require erosion and corrosion resistance, high stiffness and deformation resistance such as diesel engine parts. However, it is very difficult to produce the fine structure necessary in these parts by traditional ceramic processing. TDA will team with a large ceramics manufacturer to produce a fabrication method using SLS to sinter a high density zirconia medium to produce a refractory ceramic part for a diesel engine from a CAD model. This method will be applicable to the production of parts from other materials with minimal equipment and design changes. BENEFITS: The SLS method developed in this work will produce intricate parts from high density refractory ceramics in a short time without part specific tooling. Commercial applications include production of parts for diesel engines

* Information listed above is at the time of submission. *

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