C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
261/38, 29/45
C04B 35/58 (2006.01) B23B 27/14 (2006.01) C04B 35/16 (2006.01) C04B 35/597 (2006.01)
Patent
CA 1096409
ABSTRACT OF THE DISCLOSURE A cutting tool tip is formed at least at a cutting edge of the tip from a ceramic product consisting essentially of at least 75% by volume of a single phase compound having an expanded .beta.-phase silicon nitride lattice and having the general formula Si6-z Alz N8-z Oz, where O<z ? 5, together with a second phase containing a metal from the list yttrium, lanthanum, corium and scandium, or other rare earth metal.
299078
Lumby Roland J.
North Bernard
Taylor Alfred J.
Thomas Roland M.
Lucas Industries Limited
Marks & Clerk
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