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41. 发明授权

US6064137A Method and apparatus for a vacuum thermionic converter with thin film carbonaceous field emission 失效
标题翻译：具有薄膜碳质场发射的真空热离子转换器的方法和装置
公开(公告)号：US6064137A
公开(公告)日：2000-05-16
申请号：US414291
申请日：1998-02-05
申请人： Rodney T. Cox
发明人： Rodney T. Cox
IPC分类号： H01J45/00 , H02N3/00
CPC分类号： H01J45/00 , H02N3/00
摘要： A Vacuum Diode is constructed in which the electrodes of the Vacuum Diode are coated with a thin film of diamond-like carbonaceous material. The cathode and anode are separated by spacers and a rinse-able material, the rinse-able material which is later removed. Carbonaceous films and the related process for producing a thin film of ablated diamond are not previously known in connection with Vacuum Thermionic Converters, and provide a practical and improved means of constructing such devices.A Vacuum Thermionic Converter is optimized for the most efficient generation of electricity by utilizing a cathode and anode of very low work function. The relationship of the work functions of cathode and anode are shown to be optimized when the cathode work function is the minimum value required to maintain current density saturation at the desired temperature, while the anode's work function is as low as possible, and in any case lower than the cathode's work function. When this relationship is obtained, the efficiency of the original device is improved. It is further shown that contact potential difference between cathode and anode may be set against the effects of space charge, resulting in an improved device whereby anode and cathode may be set at a greater distance from each other than has been previously envisaged.
摘要翻译：构建真空二极管，其中真空二极管的电极涂覆有类金刚石碳质材料的薄膜。阴极和阳极通过间隔物和可冲洗材料分离，冲洗材料随后被去除。碳酸膜和用于制造消融金刚石薄膜的相关方法在真空热电转换器中并不是先前已知的，并且提供了构建这种装置的实用和改进的手段。真空热电转换器通过利用极低功函的阴极和阳极进行了优化，可以最有效地发电。当阴极功函数是将电流密度饱和保持在所需温度所需的最小值，而阳极的功函数尽可能低时，阴极和阳极的功函数的关系被优化得到优化，并且在任何情况下低于阴极的功能。当获得这种关系时，提高了原始装置的效率。进一步表明，阴极和阳极之间的接触电位差可以针对空间电荷的影响来设定，从而得到一种改进的装置，由此阳极和阴极可以被设置为比先前设想的更大的距离。

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