Method of connecting an alkaline beta alumina part to an alpha a

Details Method of connecting an alkaline beta alumina part to an alpha a Method of connecting an alkaline beta alumina part to an alpha a

1976-07-01

1977-12-20

Fisher, Richard V.

Plastic and nonmetallic article shaping or treating: processes

Including step of generating heat by friction

65 43, 65155, 264 65, 264 66, C03C 2700

Patent

active

040642097

ABSTRACT:
The alpha alumina part is heated to between 1400.degree. C and 1600.degree. C for 10 to 20 hours in a mass of alkaline carbonate or aluminate. It is then disposed in contact with a blank of the alkaline beta alumina part in a sintering enclosure suitable for establishing an atmosphere which is rich in alkaline metal and in heating this enclosure to between 1600.degree. C and 1700.degree. C for between 30 minutes and 4 hours, so as to sinter the alkaline beta alumina part while effecting the connection thereof to the alpha alumina part. The invention is used in manufacturing sodium-sulphur type electric cells.

REFERENCES:
patent: 3607435 (1971-09-01), Charles et al.
patent: 3875277 (1975-04-01), Bratton et al.
patent: 3903225 (1975-09-01), Jones
patent: 3950463 (1976-04-01), Jones

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