公开(公告)号：US3808043A

公开(公告)日：1974-04-30

申请号：US25762572

申请日：1972-05-30

Applicant: RCA CORP

Inventor： HALE J ,  MERRITT G

IPC: H01J1/24 ,  H01J9/08 ,  H05B3/12 ,  B44D1/18

CPC classification number: H01J9/08 ,  Y10T428/2944 ,  Y10T428/2949

Abstract: A refractory metal heater wire is first coated in conventional fashion with a first coating of insulating material, e.g., aluminum oxide. The coating is then dried in air at a temperature below which oxidation of the heater wire occurs for a time sufficient to completely remove all solvents from the first coating. Then, a second coating of a darkening material is applied over the first coating. The complete removal of solvents from the first layer prior to the second layer application step reduces penetration of the material of the second layer into the first layer.

Abstract translation: 首先以常规方式将耐火金属加热丝线涂覆在绝缘材料例如氧化铝的第一涂层上。 然后将涂层在低于该加热丝的氧化的温度下在空气中干燥足以从第一涂层中完全除去所有溶剂的时间。 然后，将第二涂层的变暗材料涂覆在第一涂层上。 在第二层施加步骤之前从第一层完全除去溶剂减少了第二层材料渗透到第一层中。