PLAIN BEARING PART FOR LIQUID-METAL PLAIN BEARING AND METHODOF APPLICATION OF PLAIN BEARING PART AND REVOLUTION ANODE X-RAY TUBE USING PLAIN BEARING PART

摘要

PROBLEM TO BE SOLVED: To exclude reaction of liquid metal with a material of lubricated bearing portions, good wettability of a bearing surface with the liquid metal is assured, and various materials can be used for the bearing portions, and further heat loss generated in a region of a rotary anode is well excluded if a liquid metal slide bearing formed by using the bearing portions is used in a rotary anode X-ray tube. SOLUTION: In lubricated bearing portions for a liquid metal lubricated bearing 7, the lubricated bearing portions 6, 8, 9, 10 have a bearing surface 11 or 16 making contact with liquid metal 20 during operation and a metal layer 21 or 26, which functions as a barrier against diffusion for the liquid metal 20 and can be well wetted with the liquid metal 20, is provided according to a PVD method on the bearing surface 11 or 16.