Metal founding – Process – Shaping liquid metal against a forming surface
Reexamination Certificate
2006-02-14
2006-02-14
Kerns, Kevin (Department: 1725)
Metal founding
Process
Shaping liquid metal against a forming surface
C164S098000, C164S101000, C164S103000, C164S111000
Reexamination Certificate
active
06997232
ABSTRACT:
A method for the manufacture of a three-dimensional object includes the steps of forming a mixture that contains a binder and a least one of aluminum or a first aluminum-base alloy into a green composite, removing the binder from said green composite, forming a porous preform structure, reacting the aluminum or first aluminum base alloy with nitrogen to form a rigid skeleton and infiltrating the porous structure with molten aluminum or second aluminum base alloy to form the three-dimensional object with near theoretical density. The green composite may be formed by an additive process such as computer aided rapid prototyping, for example selective laser sintering. The method facilitates the rapid manufacture of aluminum components by an inexpensive technique that provides high dimensional stability and high density.
REFERENCES:
patent: 4828008 (1989-05-01), White et al.
patent: 4863538 (1989-09-01), Deckard
patent: 5020584 (1991-06-01), Aghajanian et al.
patent: 5585190 (1996-12-01), Newkirk et al.
patent: 6416850 (2002-07-01), Bredt et al.
patent: 6823928 (2004-11-01), Sercombe et al.
Kondoh, K., Kimura, A., and Watanabe, R., “Analysis of tin behavior on surface of rapidly solidified aluminium alloy powder particles during heating,”Powder Metallurgy, 2001, vol. 44, No. 3, pp. 253-259.
Kondoh, K., Kimura, A., and Watanabe, R., “Effect of Tin on Directly Nitriding Reaction of Rapidly Solidified Aluminum Powder,”Journal of the Japan Society of Powder and Powder Metallurgy, vol. 47, No. 1, pp. 42-46.
Sercombe, T.B., and Shaffer, G.B., “Sintering Development for Free Formed Maraging Steel,” Presentation atInternational Conference on Powder Metallurgy and Particulate Materials, Vancouver, Canada, Jul. 1999.
Atsushi, K., Kondoh, K., Takeda, Y., and Shibata, M., “Behavior of Magnesium on the Surface of Aluminum Alloy Powders,”Journal Japan Inst. Metals, 1999, vol. 63, No. 9, pp. 1191-1196.
Lumley, R.N, and Shaffer, G.B., “The Effect of Additive Particle Size on the Mechanical Properties of Sintered Aluminium-Copper Alloys,”Scripta Materialia, 1998, vol. 39, No. 8, 1089-1094.
Lumly, R.N., and Shaffer, G.B., “The Effect of Solubility and Particle Size on Liquid Phase Sintering,”Scripta Materialia, 1996, vol. 35, No. 55, pp. 589-595.
Lee, K.B., and Kwon, H., “Fabrication and Characteristics of AA6061/Si3N4pComposite by the Pressureless Infiltration Technique,”Metallurgical and Materials Transactions, 1999, vol. 30A, pp. 2999-3007.
Kimura, A., Kondoh, K., Takeda, Y., and Shibata, M. “Behavior of Magnesium Dissolved in the surface of Aluminum Alloy Powders,”J. Japan Inst. Metals, 1999, vol. 63, No. 9, pp. 1191-1196.
Newell Kenneth J.
Schmidt Kris Alan
Sercombe Timothy Barry
Shaffer Graham Barry
D'Alessandro Ralph
Kerns Kevin
Lin I.-H.
Rosenblatt Greg
University of Queensland
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