EP 0313271 A1 19890426 - Metal matrix composite with silicon-free reinforcing preform.
Title (en)
Metal matrix composite with silicon-free reinforcing preform.
Title (de)
Verbundkörper mit Metallmatrize und vorgeformter Siliziumfreier Verstärkung.
Title (fr)
Matrice composite métallique à renforcement sans silicium préformé.
Publication
Application
Priority
CA 549758 A 19871020
Abstract (en)
A process is described for forming a composite cast article comprising an aluminum-silicon alloy matrix and a preform of bonded together Al2O3 fibres incorporated in the matrix, in which the preform is infiltrated under pressure by a melt of the alloy and the composite article thus formed is allowed to solidify by cooling. According to the novel feature, the fibres of the preform are bonded together by colloidal alumina rather than by the usual SiO2. The result is a composite cast article which is free of silicon associated with decomposition of SiO2 in the preform, such that a product of superior strength characteristics is obtained by using an infiltrating alloy containing the usual amounts of modifier to reduce the particle sizes reached by the silicon of the alloy during eutectic solidification. The novel preform is also described.
IPC 1-7
IPC 8 full level
B22D 19/00 (2006.01); B22D 19/14 (2006.01); C22C 47/00 (2006.01); C22C 47/06 (2006.01); C22C 47/08 (2006.01); C22C 47/12 (2006.01); C22C 49/08 (2006.01)
CPC (source: EP KR)
C22C 21/08 (2013.01 - KR); C22C 47/06 (2013.01 - EP); C22C 47/08 (2013.01 - EP); C22C 49/08 (2013.01 - EP); B22F 2998/10 (2013.01 - EP)
C-Set (source: EP)
Citation (search report)
- [X] EP 0094970 A1 19831130 - TOYOTA MOTOR CO LTD [JP], et al
- [A] EP 0204319 A1 19861210 - TOYOTA MOTOR CO LTD [JP]
- [Y] EP 0081204 A2 19830615 - SUMITOMO CHEMICAL CO [JP]
- [Y] PATENT ABSTRACTS OF JAPAN, vol. 10, no. 122 (M-476), 7th May 1986; & JP-A-60 250 893 (SUMITOMO KEIKINZOKU KOGYO K.K.) 11-12-1985
Designated contracting state (EPC)
DE ES FR GB IT SE
DOCDB simple family (publication)
EP 0313271 A1 19890426; BR 8805398 A 19890620; JP H01147031 A 19890608; KR 890006842 A 19890616
DOCDB simple family (application)
EP 88309592 A 19881013; BR 8805398 A 19881019; JP 26699888 A 19881020; KR 880013723 A 19881019