| 摘要 |
A fused metal oxide ceramic coating is disclosed for application in a particular region of the target employed in an x-ray tube. The disclosed ceramic coating enhances the thermal emittance of a refractory metal target and comprises the fused product of a metal oxide physical mixture comprising Al2O3, ZrO2, and TiO2 which exhibits a minimum melting point of approximately 1580 DEG C. A preferred ceramic coating comprises from about 40 weight percent up to about 70 weight percent TiO2, from about 20 weight percent up to about 40 weight percent ZrO2, and from about 10 weight percent up to about 20 weight percent Al2O3. A process for the in situ preparation of said ceramic coating is also disclosed along with a particular rotating type x-ray tube and radiographic imaging system employing said improved target.
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