LED泡沫金属散热器的散热性能研究  

Heat Dissipation Performance of Foam Metal Radiator Used in LED

作　　者：王芳[1,2] 张治民[1] 吕猛[2] 王录才[2] 王超星[2] 

机构地区：[1]中北大学材料科学与工程学院,山西太原030051 [2]太原科技大学材料科学与工程学院,山西太原030024

出　　处：《铸造技术》2014年第1期35-37,共3页Foundry Technology

摘　　要：研究了LED散热器用泡沫镁合金的散热性能,分析了影响散热性能的因素。结果表明,在自然对流条件下,在一定的孔隙率范围内,随着孔隙率的增大,散热器的导热率和热扩散系数下降,其散热效果也随之降低。在泡沫镁合金中增加翅片,其比表面积更大,与空气接触更多,更有利于散热。The heat dissipation property of LED radiator made of foamed magnesium alloy was investigated, and its influence factor was analyzed. The results show that the thermal conductivity and the thermal diffusion coefficient of the foamed magnesium radiator decreases, and thus the heat dissipation is weak with the increase of porosity at a certain scale under the condition of natural convection. When a fin is applied in the foamed magnesium radiator, the specific surface area is larger, resulting in the more contact with air, and thus heat dissipation is enhanced.

关 键 词：LED灯 散热 泡沫金属 比表面积 翅片 

分 类 号：TB383.4[一般工业技术—材料科学与工程] TB657.5