Process for producing a metastable precursor powder and for prod

Details Process for producing a metastable precursor powder and for prod Process for producing a metastable precursor powder and for prod

1978-10-23

1980-01-22

Meros, Edward J.

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

106 65, 106 734, 264 56, 264 65, C04B 3550, C04B 3558

Patent

active

041848845

ABSTRACT:
There is disclosed a process for producing a metastable precursor powder having about 20 to 60 percent of the silicon thereof in the nitride form. This process includes a controlled nitriding step using silicon, alumina, and either aluminum or aluminum nitride as starting materials. There is also disclosed a process for producing sialon from this precursor powder. This process includes the steps of doping the precursor powder, cold pressing or slip casting the doped powder, and then carrying out a controlled sintering step under a nitrogen atmosphere.

REFERENCES:
patent: 3991166 (1976-11-01), Jack et al.
patent: 4072532 (1978-02-01), Fletcher et al.
patent: 4113503 (1978-09-01), Lumby et al.
patent: 4127416 (1978-11-01), Lumby et al.
Masaki et al., Japan, J. Appl. Phys., vol. 14, (1975), No. 2, pp. 301 & 302.
Oyama, Japan, J. Appl. Phys., vol. 11, (1972), pp. 760 & 761.

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