Reinforced alumina ceramic-metal bodies

Details Reinforced alumina ceramic-metal bodies Reinforced alumina ceramic-metal bodies

1992-07-16

1994-01-18

Terrell, William E.

Turning

Process of turning

51281R, 51307, 51309, 407119, 75235, 75236, B31B 100, C22C 2912, C22C 2902, C22C 2918

Patent

active

052791912

ABSTRACT:
A fully dense ceramic-metal body including about 40-68 v/o .alpha.-alumina; about 10-30 v/o of a granular, hard refractory carbide, nitride, or boride; about 20-40 v/o silicon carbide platelets or elongated grains; and about 2-10 v/o of a dispersed metal phase combining Ni and Al mostly segregated at triple points of the microstructure. The preferred metal phase contains a substantial amount of the Ni.sub.3 Al ordered crystal structure. In the preferred body, the reinforcing SiC phase is partially incorporated into the alumina grain, and bridges the grain boundaries. The body including a segregated metal phase is produced by densifying a mixture of the hard phase components and the metal component, with the metal component being present in the mixture as Ni powder and Al powder. The body may be used as a cutting tool for machining nickel superalloys or cast iron at speeds up to about 1000 sfm, feed rates up to about 0.012 in/rev, and depth of cut up to about 0.10 inches.

REFERENCES:
patent: 4497228 (1985-02-01), Sarin et al.
patent: 4595663 (1986-06-01), Krohn et al.
patent: 4626407 (1986-12-01), Veltri et al.
patent: 4919718 (1990-04-01), Tiegs et al.
patent: 4956318 (1990-09-01), Moskowitz et al.
patent: 5041261 (1991-08-01), Buljan et al.
patent: 5053074 (1991-10-01), Buljan et al.
patent: 5066553 (1991-11-01), Yoshimura et al.
patent: 5089047 (1992-02-01), Buljan et al.

Affiliated with

Also associated with

Rating

Reinforced alumina ceramic-metal bodies does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Reinforced alumina ceramic-metal bodies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Reinforced alumina ceramic-metal bodies will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1130740