Segregation-free metallurgical blends containing a modified...

Details Segregation-free metallurgical blends containing a modified... Segregation-free metallurgical blends containing a modified...

C - Chemistry, Metallurgy

22

C

C22C 1/05 (2006.01) B22F 1/00 (2006.01)

Patent

CA 2150753

A novel high-performance binder system is provided for the fabrication of segregation-free iron based powder blends. The blends are prepared by using a binder system comprising thermoplastic resin polyvinylpyrrolidone and a suitable compatible plasticizer such as polyethylene glycol, and optional solid lubricants. The binder system enables the manufacture of segregation-free iron-based powder blends with high flow rate and compressibility, enhanced apparent density, green strength and transverse rupture strength, and low dimensional variations compared to unbonded powder blends and to blends made with PVP or PEG only as the binder.

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