公开(公告)号：US3737714A

公开(公告)日：1973-06-05

申请号：US3737714D

申请日：1969-01-08

Applicant: SYLVANIA ELECTRIC PROD

Inventor： THEODOSOPOULOS J ,  MACKAY S

IPC: H01J9/08 ,  H05B3/42 ,  H01J1/20 ,  H01J19/14

CPC classification number: H01J9/08 ,  H05B3/42

Abstract: A tungsten heater has a first coating of an insulating oxide covering its entire body and extending onto its legs and a second coating of elemental tungsten, reduced in situ, covering substantially all the first coating except for a short span on the legs.

Abstract translation: 钨加热器具有覆盖其整个主体并延伸到其腿部上的绝缘氧化物的第一涂层，以及原位还原的第二次元素涂层，其基本上覆盖除了腿上短跨度之外的所有第一涂层。