Whisker-reinforced ceramic cutting tool material

Details Whisker-reinforced ceramic cutting tool material Whisker-reinforced ceramic cutting tool material

1990-10-16

1992-08-25

Bell, Mark L.

Compositions: ceramic

Ceramic compositions

Carbide or oxycarbide containing

501 98, 51309, C04B 3510

Patent

active

051419017

ABSTRACT:
The present invention relates to a ceramic whisker-containing cutting insert for chipforming machining of steel having improved mechanical, thermal and wearing properties.
Besides an oxide-based matrix, the material contains 5-50, preferably 10-40, % by volume of homogeneously distributed whiskers or platelets of nitrides, carbides and/or borides of metals from group IVB (Ti, Zr or Hf) and/or VB (V, Nb or Ta) in the periodic system (or solid solutions thereof) having a linear expansion coefficient being lower than that of Al.sub.2 O.sub.3, preferably at the most 85% of that for Al.sub.2 O.sub.3 measured at 300-1300 K. The properties of the composite material can be further modified by coating the whisker material with thin layers. The whisker reinforced cutting tool material shows an improved toughness behavior.

REFERENCES:
patent: 4366254 (1982-12-01), Rich et al.
patent: 4745091 (1988-05-01), Landingham
patent: 4804645 (1989-02-01), Ekstrom
patent: 4852999 (1989-08-01), Mehrotra et al.
patent: 4867761 (1989-09-01), Brandt et al.

Affiliated with

Also associated with

Rating

Whisker-reinforced ceramic cutting tool material does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Whisker-reinforced ceramic cutting tool material, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Whisker-reinforced ceramic cutting tool material will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-384893