| 摘要 |
FIELD: radio-spectral analysis of materials. ^ SUBSTANCE: proposed combined X-ray tube rotating anode has main body made of ceramic material incorporating nitride of element chosen from group of Al, B, Si, at least part of its main-body surface being covered with layer of radiating material based on metal chosen from group of Mo, Ta, W, Re and their compounds, including sub-compounds , carbides, nitrides, borides, and silicides; all mentioned ceramic materials are produced by way of self-spreading high-temperature synthesis (SHS). Proposed process includes manufacture of anode main body and radiating layer using SHS method that involves gas-static pre-compaction of blank of source powder mixtures placed in steel cup incorporating evacuation facility followed by blank disposal in high-pressure apparatus chamber wherein nitrogen pressure is held up to 100 MPa, initiation of blank burning reaction in nitrogen, removal of ready part, and its mechanical finishing treatment; in the process source powder mixtures used for producing radiating layer and main body are poured to form separate layers of respective thickness on double-layer blank; cup bottom can be tapered through 15 - 20 deg.; pre-produced radiating layer can be press-fitted to main-body blank and then joined to body simultaneously with synthesis of the latter. ^ EFFECT: enhanced effectiveness, stability, and economic efficiency, enlarged range of materials used for anode manufacture. ^ 6 cl |
