公开(公告)号：US4985275A

公开(公告)日：1991-01-15

申请号：US405571

申请日：1989-09-08

申请人： Tetsu Takemura ,  Hidetoshi Ichinose ,  Keisuke Ohkubo ,  Akihiko Sugitani ,  Toshiyuki Okamoto

发明人： Tetsu Takemura ,  Hidetoshi Ichinose ,  Keisuke Ohkubo ,  Akihiko Sugitani ,  Toshiyuki Okamoto

IPC分类号： H01J61/35

CPC分类号： H01J61/35

摘要： 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.

摘要翻译： 一种用于放电灯的熔融二氧化硅外壳的制造方法，其中熔融石英管的内表面涂覆有含有醇钛酸盐的制剂，并且所述涂层通过包括在至少1720℃的温度下烘烤的步骤 使TiO 2扩散到管中。 该方法导致从外壳壁的内表面的1μm-10μm的Ti浓度以TiO 2计为0.5％-7％，并且总平均Ti浓度和厚度的乘积 信封墙面积从3.7％至42％。 在烘烤步骤期间，通过使二氧化硅管充气来将管成形为包括灯泡状部分。