空气中Al6061氧化过程红外发射率特性研究

摘要：

基于自主搭建的材料光谱发射率测量装置,分别对铝合金6061在5个温度点(623K、673K、723K、773K、823K)测量氧化前后的发射率,分析了温度、波长、氧化时间、粗糙度对铝合金样品发射率的影响.实验结果表明:铝合金6061的发射率随波长的增加而降低,随温度的升高而增大,温度对发射率的影响程度在不同波长下是不同的.表面氧化会增加样品表面的粗糙度,从而造成发射率数值增加,氧化效应对发射率的影响程度在不同温度、波长下是不同的,氧化效应可使发射率最大增加0.05(723K时).温度为823K时,发射率随氧化时间的变化可用抛物线模型很好地拟合.

Based on the self-build spectral emissivity measurement device,the spectral emissivity of aluminum alloy 6061 before and after oxidation was measured at five temperatures(623 K,673 K,723 K,773 K,823 K),and the influence of temperature,wavelength,oxidation time and roughness on the emissivity of the samples was analyzed.The experimental results show that the emissivity of aluminum alloy 6061 decreases with the increasing of wavelength and increases as temperature rises,the influence of temperature on emissivity varies at different wavelengths.The surface oxidation will increase the roughness of the sample surface,resulting in the increase of emissivity value.The degree of oxidation effect on emissivity is different at different temperature and wavelength.The oxidation effect can increase the emissivity maximal by 0.05(723 K).The change of emissivity with oxidation time can be well fitted by parabolic model when the temperature is 823 K.

作者：

韦新风 张凯华 于坤

Wei Xinfeng;Zhang Kaihua;Yu Kun(College of Physics&Materials Science,Henan Normal University,Xinxiang 453007,China)

机构地区：

betway官方app 物理与材料科学学院

出处：

《betway官方app 学报：自然科学版》 CAS 北大核心 2019年第3期55-60,共6页

基金：

国家自然科学基金(U1804261)

关键词：

发射率 铝合金6061 傅里叶红外光谱仪 热氧化

emissivity aluminum alloy 6061 fourier infrared spectroscopy thermal oxidation process

分类号：

O657.3 [理学—分析化学] TG146.21 [金属学及工艺—金属材料]

空气中Al6061氧化过程红外发射率特性研究.pdf