Adhesive bonding and miscellaneous chemical manufacture – Delaminating processes adapted for specified product – Delaminating in preparation for post processing recycling step
Patent
1978-07-21
1981-07-21
Bernstein, Hiram
Adhesive bonding and miscellaneous chemical manufacture
Delaminating processes adapted for specified product
Delaminating in preparation for post processing recycling step
156DIG99, C30B 2510
Patent
active
042796890
ABSTRACT:
A super hard-highly pure silicon nitride includes a preferentially oriented crystalline silicon nitride having a grain size of 1-50 .mu.m and a micro Vickers hardness of 3,000 kg/mm.sup.2 under a load of 100 g, a finely grained crystalline silicon nitride having an average grain size of less than 1 .mu.m and a micro Vickers hardness of 3,500 kg/mm.sup.2 under a load of 100 g, and an amorphous silicon nitride having a micro Vickers hardness of 2,200 kg/mm.sup.2 under a load of 100 g, and is produced by blowing a nitrogen depositing source and a silicon depositing source on a substrate heated at 500.degree.-1,900.degree. C. with a blowpipe composed of a pipe assembly wherein a first pipe for the nitrogen depositing source is surrounded with a second pipe for the silicon depositing source and the distance from an opening end of the first pipe to the substrate is shorter than the distance from an opening end of the second pipe to the substrate.
REFERENCES:
patent: 3226194 (1965-12-01), Kuntz
patent: 3297501 (1967-01-01), Reisman
Aboaf, J. Electrochem. Soc.: Solid State Science, vol. 116, #12, (Dec. 1966), pp. 1736-1740.
Grieco, J. Electrochem. Soc.: Solid State Sci., vol. 116, #12, Dec. 1969, pp. 1736-1740.
Whitner, Western Elec. Co. Inc., Tech. Dig. #11, Jul., 1968, pp. 5-6.
Hirai Toshio
Niihara Koichi
Bernstein Hiram
The Research Institute for Iron, Steel and Other Metals of the T
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