Metallurgical powder compositions and articles and methods...

Details Metallurgical powder compositions and articles and methods... Metallurgical powder compositions and articles and methods...

2008-01-29

2008-01-29

Lopez, F. Daniel (Department: 3745)

Power plants

Pressure fluid source and motor

Utilizing a mixture, suspension, semisolid or...

Reexamination Certificate

active

07322187

ABSTRACT:
The metallurgical powder composition suspensions of the present invention include a magnetic powder having an outer oxide layer suspended in a carrier fluid. Magnetic powders include iron-based powders, such as for example, powders of iron pre-alloyed with other elements. Alloying materials include columbium, silicon, calcium, manganese, magnesium, carbon, boron, aluminum, titanium, molybdenum, chromium, copper, nickel, gold, vanadium, phosphorus, or combinations thereof. Carrier fluids include silicon-based fluids and/or oils, such as hydrocarbon oils. The outer oxide layer includes alloy materials that are reacted/complexed with oxygen. Magnetic powders exhibit low rates of oxidation over a broad temperature range. Articles incorporating metallurgical powder composition suspensions include dampeners having a chamber, a piston that reciprocates in the chamber, and a source of magnetism operatively connected to the chamber. The source of magnetism, when activated, produces a magnetic field that changes the apparent viscosity of the metallurgical powder composition suspension.

REFERENCES:
patent: 2667237 (1954-01-01), Rabinow
patent: 4264356 (1981-04-01), Shinagawa et al.
patent: 4289549 (1981-09-01), Kasai
patent: 5102477 (1992-04-01), Iwayama et al.
patent: 5578238 (1996-11-01), Weiss et al.
patent: 5645752 (1997-07-01), Weiss et al.
patent: 6382369 (2002-05-01), Lisenker
patent: 6440322 (2002-08-01), Kim et al.
patent: 6510929 (2003-01-01), Gordaninejad
patent: 6525289 (2003-02-01), Ananthanarayanan et al.
Halliday Physics Part II John Wiley & Sons 1960 pp. 926-931.

Affiliated with

Also associated with

Rating

Metallurgical powder compositions and articles and methods... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Metallurgical powder compositions and articles and methods..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Metallurgical powder compositions and articles and methods... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2757470