Rotatable anode for an X-ray tube composed of a coated, porous body

US4271372A · kind A · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Ernst Geldner · Radebeul, DE
• Rudolf Friedel
• Klaus Haberrecker · Bubenreuth, DE

Key dates

• Filing date: Mar 16, 1977
• Grant date: Jun 2, 1981
• Expiry date: Mar 16, 1997

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/30
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

A rotatable anode for an X-ray tube comprising a body composed of a porous, difficult to melt material enclosed in a sealed fashion within an enveloping layer of a difficult to melt material, characterized by the porous body being of a material having a good thermal conductivity and a good thermal capacity and said porous body having its pores filled with a material having a good thermal conductance and being a good conductor of heat. The porous body is preferably a sintered porous body. The material of the porous body as well as the material of the enclosing layer are selected from a group consisting of tungsten, molybdenum, niobium, chromium, vanadium, titanium, carbon, alloys of these materials, and compounds of these materials. The filler material is preferably a metal selected from a group consisting of silver, gold, copper, aluminum, and alloys of these elements containing not less than a predominant proportion of at least one of these metals. The enveloping layer may be in the form of a sheet material container and lid which are tightly sealed together such as by welding or may be formed of a layer or coating of a portion of the porous body which layer or coating is tightly …