公开(公告)号：SE8002445L

公开(公告)日：1980-10-03

申请号：SE8002445

申请日：1980-03-31

Applicant: PHILIPS NV

Inventor： KNAPP A G

IPC: C23C14/16 ,  C23C14/58 ,  H01J9/12

Abstract: A method of forming an emissive coating on a dynode substrate. The method comprises the steps of vapor depositing a composite coating consisting of magnesium and aluminum onto the dynode substrate. A 50 to 500 angstrom thick layer of aluminum is vapor deposited over the composite coating and the aluminum layer is oxidized. The coated dynode is then activated by heating it in an oxygen atmosphere at a pressure of at least 5x10-6 Torr oxygen at a temperature between 270 DEG and 400 DEG C. The resulting secondary emissive coating contains from 1.5 to 90% by weight of magnesium. The coated dynodes are used in channel electron multipliers which are suitable for use in electron display tubes such as image intensifiers or color television display tubes.

公开(公告)号：SE8002445A

公开(公告)日：1980-10-03

申请号：SE8002445

申请日：1980-03-31

Applicant: PHILIPS NV

Inventor： KNAPP A G

IPC: C23C14/16 ,  C23C14/58 ,  H01J9/12

CPC classification number: C23C14/16 ,  C23C14/58 ,  C23C14/5806 ,  C23C14/5853 ,  H01J9/125 ,  H01J2201/32