Method for producing a fused silica envelope for discharge lamp

Details Method for producing a fused silica envelope for discharge lamp Method for producing a fused silica envelope for discharge lamp

1989-09-08

1991-01-15

Beck, Shrive

Coating processes

Electrical product produced

Hollow article

427108, 4271262, 4271263, 427226, 427230, 427235, 427380, 313634, 313635, 313636, 65 605, 65 6052, B05D 512, B05D 722, B05D 302

Patent

active

049852752

ABSTRACT:
A method for producing a fused silica envelope for use in a discharge lamp in which the inner surface of a fused silica tube is coated with a formulation containing titanium alcoholate and the coating treated by the steps including baking at a temperature of at least 1720.degree. C. to cause TiO.sub.2 to diffuse into the tube. The method results in a Ti concentration in a range of 1 .mu.m-10 .mu.m from the inner surface of the wall of the envelope is 0.5%-7% in terms of TiO.sub.2 and the product of the overall average Ti concentration and the thickness of the wall of the envelope ranges from 3.7% .mu.m to 42% .mu.m. During the baking step, the tube is shaped to include a bulb-like portion by inflating the silica tube.

REFERENCES:
patent: 2568459 (1951-04-01), Noel
patent: 2757305 (1956-07-01), Dziergwa
patent: 3141990 (1964-07-01), Ray
patent: 3219868 (1965-11-01), Mason et al.
patent: 3619235 (1971-11-01), Furuuchi et al.
patent: 3841858 (1974-10-01), Akashi et al.
patent: 3850679 (1974-11-01), Sopko et al.
patent: 3988628 (1976-10-01), Clausen
patent: 4112142 (1978-09-01), Schroder et al.
patent: 4129434 (1978-12-01), Plumat et al.
patent: 4293593 (1981-10-01), Yoldas
patent: 4361598 (1982-11-01), Yoldas
patent: 4816049 (1989-03-01), Hata et al.

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