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Ionizing radiation post-curing of objects produced by stereolithography and other methods

United States Patent

6,107,008
August 22, 2000
View the Complete Patent at the US Patent & Trademark Office
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An object comprised of a curable material and formed by stereolithography or another three-dimensional prototyping method, in which the object has undergone initial curing, is subjected to post-curing by ionizing radiation, such as an electron beam having a predetermined beam output energy, which is applied in a predetermined dosage and at a predetermined dose rate. The post-cured object exhibits a property profile which is superior to that which existed prior to the ionizing radiation post-curing.
Howell; David H. (Knoxville, TN), Eberle; Claude C. (Knoxville, TN), Janke; Christopher J. (Oliver Springs, TN)
Lockheed Martin Energy Research (Oak Ridge, TN), Lockheed Martin Energy Systems, Inc. (Oak Ridge, TN)
08/ 921,417
August 29, 1997
STATEMENT AS TO RIGHTS TO INVENTIONS MADE UNDER FEDERALLY-SPONSORED RESEARCH AND DEVELOPMENT The U.S. Government has certain rights in this invention pursuant to contracts numbers DE-AC05-960R22464 and DE-AC05-84OR21400, between the United States Department of Energy and Lockheed Martin Energy Services, Inc.