EP 0421521 B1 19941109 - X-ray tube anode with oxide layer.
Title (en)
X-ray tube anode with oxide layer.
Title (de)
Röntgenröhrenanode mit Oxidbeschichtung.
Title (fr)
Anode pour tube à rayons X avec couche d'oxide.
Publication
Application
Priority
AT 227689 A 19891002
Abstract (en)
[origin: EP0421521A2] The improvement of the thermal emissivity of metallic X-ray tube anodes by oxide coating has been successfully used for years, but nevertheless there is a constant demand for the improvement of the properties or effects of the layer. <??>According to the present invention, 1-20% by weight, in particular 4-7% by weight, of silicon oxide, in addition to small proportions of other compounds, is added to a known oxide coating applied by standard processes and consisting of zirconium oxide, titanium oxide, aluminium oxide and/or calcium oxide. This makes it possible to improve the application of such oxides or oxide mixtures substantially and to process them so as to produce more usable layers than hitherto without adversely affecting the important properties of layer adhesion and thermal coefficient of emission.
IPC 1-7
IPC 8 full level
H01J 35/10 (2006.01)
CPC (source: EP US)
H01J 35/105 (2013.01 - EP US)
Designated contracting state (EPC)
CH DE FR GB IT LI NL
DOCDB simple family (publication)
EP 0421521 A2 19910410; EP 0421521 A3 19910724; EP 0421521 B1 19941109; AT 394643 B 19920525; AT A227689 A 19911015; DE 59007689 D1 19941215; JP H03127439 A 19910530; US 5157705 A 19921020
DOCDB simple family (application)
EP 90202558 A 19900927; AT 227689 A 19891002; DE 59007689 T 19900927; JP 26369690 A 19901001; US 59162490 A 19901002