Method of machining cast iron

Details Method of machining cast iron Method of machining cast iron

1983-06-21

1985-02-05

Vlachos, Leonidas

Turning

Process of turning

51307, 407119, B23B 100, B23B 2714

Patent

active

044972288

ABSTRACT:
A composite article and cutting tool are prepared by densification to form a body consisting essentially of particles of hard refractory material uniformly distributed in a matrix consisting essentially of a first phase and a second phase, said first phase consisting essentially of crystalline silicon nitride and said second phase being an intergranular refractory phase comprising silicon nitride and a suitable densification aid selected from the group consisting of yttrium oxide, zirconium oxide, hafnium oxide and the lanthanade rare earth oxides and mixture thereof.

REFERENCES:
patent: 4073845 (1978-02-01), Buljan et al.
patent: 4106616 (1978-07-01), Buljan
patent: 4145224 (1979-03-01), Mehalchick et al.
patent: 4179301 (1979-12-01), Buljan
patent: 4227842 (1980-10-01), Samanta et al.
patent: 4286905 (1981-09-01), Samanta
patent: 4320203 (1982-03-01), Brandt et al.
patent: 4323325 (1982-04-01), Samanta et al.
patent: 4352308 (1982-10-01), Samanta et al.
"Optimization of the Properties of a Tool Material Based on Silicon Nitride", Soviet Powder Metallurgy and Metal Ceramics, 17:124-127, (1978).

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