高发射率红外涂料进展  

The Advance of a High Radiation Ability Far-infrared Coating Materials

作　　者：蔡家敏[1] 杜国维[1] 

机构地区：[1]北京科技大学物理系,北京100083

出　　处：《激光与红外》1993年第3期27-30,共4页Laser & Infrared

摘　　要：研制了高发射率红外涂料,2.5～25μm内其总发射率可达91％;在650℃的光谱发射率ε_λ=75～90％。其性能近似于灰体。将涂料与无机高温粘接剂混合涂在电阻加热炉的内壁上。在加热升温过程(250～1100℃)明显缩短时间,在4kW电炉上节时效率为25％左右,具有显著节能效果。A kind of far-infrared coating material has been developed . The radiation wavelengh coverage of the coating material is 2.5～25μm. At high temperature, the total emissivity is 91%near a grey-body emitter, The coating material mainly consistes of oxides of silicon. Iron ,Chromium manganese, as well as oxide of Titanium. Every oxide has a high selective radiation ability and could make a selective emission among a certain small wave band, when the oxides are mixed, they could make higher selective emission respectively within a certain broad wavelength band, so the coating material has an advanced emissivity.The measurement of the spectral emissivity ε_λ of the material was made . At 650℃ the values of ε_λwere 7～90% among the 2.5～25μm wave band. The coating material was used as the surface material of the electric heater. The heat efficiency of the heater could increase about 25% and the heating time from 250℃ to 1100℃ in obviously shortened.

关 键 词：红外涂料 光谱发射率 红外材料 

分 类 号：TN213[电子电信—物理电子学]