Method for producing an article by pressureless reactive infiltration
AssigneeMassachusetts Institute of Technology
InventorsYet-Ming Chiang, Jong-Ren Lee, Leszek Hozer
Life of this patent
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Abstract
A method is provided for preparation of a composite including steps of providing a preform and a liquid infiltrant alloy including at least two elements and having a liquid infiltrant alloy composition which is selected so that the liquid infiltrant alloy spontaneously infiltrates the preform and contacting the liquid infiltrant alloy with the preform so that a chemical reaction occurs to form a composite by reactive infiltration, as are composites produced according to the method of the invention.
Claims40
A method for preparation of a composite comprising:
- (1) providing a porous preform;
- (2) providing a liquid infiltrant alloy including at least two elements and further characterized by a liquid infiltrant alloy composition selected so that said liquid infiltrant alloy wets said preform and so that said liquid infiltrant alloy spontaneously infiltrates said preform;
- (3) contacting said liquid infiltrant alloy with said preform so that a chemical reaction occurs whereby said liquid infiltrant alloy reacts with said preform to form a reacted preform;
- and
- (4) cooling said reacted preform to form a solid composite.
A package for an integrated circuit comprising a composite characterized by a substantially fully dense microstructure, a silicon carbide volume fraction in the range of from about 20% to about 90%, and a residual metal phase selected from the group consisting of a silicon-aluminum alloy, substantially pure silicon, silicon-containing aluminum, substantially pure aluminum and mixtures thereof.
A wear part for an internal combustion engine comprising a composite characterized by a substantially fully dense microstructure, a silicon carbide volume fraction in the range of from about 20% to about 90%, and a residual metal phase selected from the group consisting of a silicon-aluminum alloy, substantially pure silicon, silicon-containing aluminum, substantially pure aluminum and mixtures thereof.
A composite characterized by a substantially fully dense microstructure, a silicon carbide volume fraction in the range of from about 20% to about 90%, a residual metal phase selected from the group consisting of a silicon-aluminum alloy, substantially pure silicon, silicon-containing aluminum, substantially pure aluminum and mixtures thereof.
A composite characterized by a substantially fully dense microstructure, a silicon carbide volume fraction in the range of from about 20% to about 90%, a residual metal phase selected from the group consisting of substantially pure copper, copper-silicon compounds and .eta.,.epsilon.,.gamma., and .kappa. phases and mixtures thereof.
A package for an integrated circuit comprising a composite characterized by a substantially fully dense microstructure, a silicon carbide volume fraction in the range of from about 20% to about 90%, and a residual metal phase selected from the group consisting of substantially pure copper, copper-silicon compounds and .eta.,.epsilon.,.gamma.,and .kappa. phases and mixtures thereof.
A wear part for an internal combustion engine comprising a composite characterized by a substantially fully dense microstructure, a silicon carbide volume fraction in the range of from about 20% to about 90%, and a residual metal phase selected from the group consisting of substantially pure copper, copper-silicon compounds and .eta.,.epsilon.,.gamma., and .kappa. phases and mixtures thereof.
Dependencies are inferred from the claim text.