The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 21, 2009
Filed:
Oct. 24, 2003
Jean-yves Fortin, Jonquiere, CA;
Jacques Sheehy, Jonquiere, CA;
Camil Jean, Jonquiere, CA;
Paul Brisson, Jonquiere, CA;
Uta Harnisch, Chicoutimi, CA;
Don Allen Doutre, Kingston, CA;
Xiao-guang Chen, Jonquiere, CA;
Jean-Yves Fortin, Jonquiere, CA;
Jacques Sheehy, Jonquiere, CA;
Camil Jean, Jonquiere, CA;
Paul Brisson, Jonquiere, CA;
Uta Harnisch, Chicoutimi, CA;
Don Allen Doutre, Kingston, CA;
Xiao-Guang Chen, Jonquiere, CA;
Alcan International Limited, Montreal, Quebec, CA;
Abstract
A cast composite material is prepared by furnishing an aluminum-based matrix alloy and forming a mixture of free-flowing boron carbide particles and the aluminum-based matrix alloy in molten form which is stirred to wet the matrix alloy to the boron carbide particles and to distribute the particles throughout the volume of the melt. The molten mixture is then cast. The fluidity of the molten mixture is maintained by (a) maintaining the magnesium content of the matrix metal below about 0.2% by weight, or (b) starting with a matrix metal containing less than 0.2% by weight magnesium and adding further magnesium to the mixture a short time before casting, or (c) having at least 0.2% by weight titanium present in the mixture.