Aqueous nonferrous feedstock material for injection molding
AssigneeRutgers, The State University of New Jersey
InventorsJerry C. LaSalle, Mohammad Behi, George A. Glandz, Joan V. Burlew
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Abstract
This invention provides a process for forming sintered, molded articles having improved dimensional stability. More particularly, this invention pertains to process for forming heat sinks. This process includes forming a substantially uniform copper composition comprising a polysaccharide binder, water, and copper particles; molding the copper composition under conditions sufficient to form a solid molded intermediate; and sintering the solid molded intermediate at a sufficient temperature and for a sufficient time to form a heat sink.
Claims20
A process for forming a heat sink which comprises:
- a) forming a substantially uniform copper composition comprising:
- i) at least one gel forming polysaccharide binder;
- ii) water;
- and
- iii) copper particles having an average particle size in the range of from about 2 μm to about 40 μm;
- b) molding the copper composition under conditions sufficient to form a solid molded intermediate;
- and
- c) sintering the solid molded intermediate at a sufficient temperature and for a sufficient time to form a heat sink.
A process for forming a heat sink which comprises:
- a) forming a fluid composition comprising:
- i) at least one gel forming polysaccharide binder;
- and
- ii) water;
- b) heating the fluid composition to melt the binder;
- c) blending copper particles into the fluid composition to thereby form a substantially uniform copper composition;
- d) cooling the copper composition to thereby form a substantially solid copper composition;
- e) shredding the substantially solid copper composition to form a feedstock;
- f) optionally adjusting the moisture content in the feedstock to a level of from about 6% to about 8% moisture by weight of the feedstock;
- g) molding the feedstock under conditions sufficient to form a solid molded intermediate;
- and
- h) sintering the solid molded intermediate at a sufficient temperature and time to form a heat sink.
Dependencies are inferred from the claim text.