摘要
通过分析不同螺旋线慢波组件的散热性能,研究了金属纳米粒子薄膜的采用对辐射散热性能的改善作用.利用实验测试和模拟仿真的方法,分析比较了采用普通金属管壳,沉积普通金属铱膜管壳和沉积纳米铱膜管壳的慢波组件的导热能力.结合实验数据,准确地推算出几种研究材料的热辐射发射率,并利用模拟仿真给予了验证.实验结果和模拟结果具有很好的一致性.研究表明,与普通金属材料相比,金属纳米粒子薄膜具有较强的热辐射能力,能够改善器件的散热性能.
The effect of the nanoparticulate metal film on the heat radiation performance has been studied by evaluating the thermal conduction of different helix slow-wave structures ( SWS). The heat dissipation capabilities of the SWSs with normal barrel, with normal Ir film deposited barrel and nano-Ir deposited barrel have been analyzed and compared by experiments and simulations. With the measured data, the radiation emissivities of the employed materials have been estimated, and the accuracy has been verified by computer simulation. The experimental results and the simulation results make perfect agreement, suggesting that the nanoparticulate metal film gives much better heat radiation performance.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2010年第1期466-470,共5页
Acta Physica Sinica
关键词
金属纳米粒子薄膜
辐射散热
散热性能
nanoparticulate metal film, heat radiation, heat dissipation capability