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:
Dec. 28, 1999
Filed:
Mar. 19, 1998
Hideo Shimizu, Saitama, JP;
Tsunehisa Hata, Saitama, JP;
Yusuke Toyoda, Saitama, JP;
Takeo Itou, Saitama, JP;
Norito Suzuki, Saitama, JP;
Katuya Nagase, Saitama, JP;
Honda Giken Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
An aluminum-based composite member having an increased strength of bond between an aluminum-based body and a cast iron material portion which is incorporated into the aluminum-based body by casting is provided by an improved process. The following steps are employed in the process: a step of removing an oxide film on the surface of the cast iron material portion and activating such surface; a step of forming a protecting plated-layer having a thickness a in a range of 0.8 .mu.m.ltoreq.a.ltoreq.5 .mu.m on the surface of the cast iron material portion; a step of preheating the cast iron material portion in a reducing gas atmosphere and reducing an oxide on the surface of the protecting plated-layer; a step of vanishing the protecting plated-layer by a diffusing phenomenon and forming an aluminum-based alloy plated layer on the surface of the cast iron material portion by immersing the cast iron material portion into a molten aluminum-based alloy; a step of quenching the cast iron material portion in an inert gas atmosphere; and a step of incorporating the cast iron material portion into the aluminum-based body by casting.