| 摘要 |
PROBLEM TO BE SOLVED: To provide a long-life joint body excellent in heat dissipating property and in thermal shock resistance, increased in mechanical strength, and resistant to deformation such as failure and break and to provide a rotary anode for an X-ray tube using the joint body, a manufacturing method of the joint body, and a manufacturing method of the rotary anode for an X-ray tube. SOLUTION: This joint body is formed by sticking first substrates 1, 2 made of a high-melting point metal on a second substrate 3 made of carbon by means of joint layers formed of a brazing filler metal. The first substrates 1, 2 are each equipped with a single layer of either a W-containing metal or a Mo- containing metal, or a multilayer structure of these metals. The W-containing metal is either W or a W-alloy, the Mo-containing metal is either Mo or a Mo-alloy, the second substrate 3 is made of graphite or a carbon-fiber composite material, the brazing filler metal is substantially Zr, and the joint layer 11 has a Zr-compound layer of 10 to 200μm in thickness.
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