The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 05, 1996
Filed:
Sep. 06, 1994
Applicant:
Inventor:
David L Muth, Columbia, PA (US);
Assignee:
Thermacore, Inc., Lancaster, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23K / ; B23K / ;
U.S. Cl.
CPC ...
2281221 ; 2281246 ; 2282481 ; 419-9 ; 419 47 ;
Abstract
The disclosure is for a method of bonding materials with severely mismatched coefficients of thermal expansion, such as carbon/carbon and a composite of aluminum oxide and niobium and for the structure of the bonded joint. The key to a good bond between such materials is the use of a thin layer of porous sintered metal as an intermediate material which is bonded to the two diverse thermal expansion materials. The sintered material has a porosity of 20 to 80 percent, and stays bonded to both of the different material surfaces while the sintered material itself is also not destroyed by the thermal stress.