B - Operations – Transporting – 22 – C
Patent
B - Operations, Transporting
22
C
B22C 1/00 (2006.01) C08J 5/00 (2006.01) C08K 3/00 (2006.01) C08K 7/18 (2006.01) C08L 83/04 (2006.01) C08L 83/05 (2006.01) C08L 83/07 (2006.01)
Patent
CA 2612051
Disclosed herein is a method comprising disposing a casting composition within a sacrificial die; wherein internal features of the sacrificial die provide a replica of a desired casting; wherein the casting composition has a viscosity of about 1 to about 1,000 Pascal-seconds at room temperature when tested at a shear rate of up to 70 seconds-1; reacting the casting composition to form a gel matrix; removing the sacrificial die; extracting a solvent from the gel matrix to form a dried gel; and firing the dried gel to form a ceramic core. Disclosed herein too is a casting composition comprising a monomer and/or a polymer; and a metal and/or ceramic powder; wherein the casting composition has a viscosity of about 1 to about 1,000 Pascal- seconds at room temperature when tested at a shear rate of up to 70 seconds 1 and a flow index of less than 0.6.
Lee Ching-Pang
Leman John Thomas
Mcnulty Thomas Francis
Wang Hsin-Pang
Company General Electric
Craig Wilson And Company
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