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提出了慢波组件散热性能的评价方法——电阻温度系数法,利用此方法对冷弹压法、缠钼带热挤压法、石墨热挤压法及新型的无变形热挤压法制备的慢波组件散热性能进行了实验研究,结果表明无变形热挤压方法比冷弹压法和传统的缠钼带热挤压法制备的慢波组件散热性能好。传统的石墨热挤压法可与无变形热挤压法制备的组件的散热能力相比拟,但石墨热挤压法会引起慢波组件的两次变形,使慢波组件的微波反射点增多增强,从而影响慢波组件的电性能。对国产BeO和进口BN夹持杆组成的慢波组件的散热性能进行了比较研究。同时对镀铜和镀金螺旋线与无镀层螺旋线组成的慢波组件也进行了对比研究。这些结果为制备散热性能好的慢波组件提供了有益的实验结果。
The method of temperature coefficient of resistance is proposed to evaluate the thermal performance of slow wave components. The slow temperature wave propagation method is used to simulate the slow wave components. The slow extrusion method, the hot band method with molybdenum foil, graphite hot extrusion method and the new non-deformation hot extrusion method The experimental results show that the non-deformable hot extrusion method has better heat dissipation performance than the cold-extrusion method and the traditional hot-rolled molybdenum foil ribbon. Conventional graphite hot extrusion method can be compared with the heat-dissipating ability of the components prepared by the non-deforming hot extrusion method, but the graphite hot extrusion method causes the two deformations of the slow wave component to increase and increase the microwave reflection points of the slow wave component , Thus affecting the electrical properties of the slow wave assembly. The cooling performance of the slow wave components composed of domestic BeO and imported BN clamping rod were compared. At the same time, a comparison was also made between the slow wave components made of copper plating, gold plating spirals and uncoated spirals. These results provide useful experimental results for the preparation of slow-wave components with good thermal performance.