Molybdenum-Copper Composite Material
Patent Application, Filed 4 Aug 2003
DEPARTMENT OF THE NAVY WASHINGTON DC
Pagination or Media Count:
Accordingly, it is an object of the present invention to provide a composite material that offers the ability to create tools and prototype parts requiring working temperatures up to 1000 degrees Centigrade. It is a further object of the present invention to provide a composite material as above which has a low coefficient of thermal expansion. It is still a further object of the present invention to provide a method for manufacturing the above composite material. The foregoing objects are attained by the composite material and method of the present invention. In accordance with the present invention, a composite material is provided which has a molybdenum particulate and an oxygen free copper matrix. The molybdenum is preferably present in an amount of 35 - 65 vol with the balance being of oxygen free copper. Also, in accordance with the present invention, a method for manufacturing a molybdenum-copper composite material broadly comprises forming a mixture of molybdenum, phenolic, and wax, forming the mixture into a green form using either a selective laser sintering processor a cold pressing process, placing the green form and oxygen free copper into the furnace adjacent to the green form, and subjecting the green form and the oxygen free copper to a furnace cycle. During the furnace cycle the wax and phenolic thermoset resin is vaporized and the molybdenum is sintered. Additionally, the sintered molybdenum substrate, which is contacted with copper, is heated above the melting point of the copper which causes the-copper to infiltrate the molybdenum substrate, forming the molybdenum-copper composite part.
- Laminates and Composite Materials