## 基于红外积分球试验的粉体材料辐射特性分析研究

Title    Study on the radiation characteristics of powder material based on the infrared integral sphere

Abstract
In the engineering system, thermal radiation is the main mode of energy transfer, and it is of great significance to study the radiation characteristics of powder materials. This paper is based on the full investigation of the literature, introduces the at home and abroad the latest developments, the powder sample preparation method, powder body material radiation characteristic parameter measurement method are discussed, lists the powder layer radiation characteristics calculation model, focuses on three flux theory RTF equation solving. In this paper, the design of processing the sample holder, layer using a suitable support, completed the preparation of powder samples, and by integrating sphere radiation characteristic measuring parameters, and then according to the three heat flow theory to solve the programming model RTF equation. The results show that the albedo of the alumina powder decreases with the increase of the wavelength, and the effective extinction coefficient increases first and then decreases with wavelength, but the decrease is more moderate.. Absorption and scattering than with the wavelength increasing first increased and then decreased, along with the increase of the powder layer thickness, the transmittance of the alumina powder gradually become smaller, albedo ratio, effective extinction coefficient, absorption and scattering ratio of the peak to the short wavelength direction mobile.
Keywords  Powder material  Radiant characteristic  Three heat flux theory Integral sphere
目   次
1绪论1
1.1研究背景及意义1
1.2国内外研究进展4
1.3课题主要研究内容5
2 理论模型建立6
2.1粉末层透射率T、反射率R求解模型6
2.2 反照比w0*,光学厚度t0*求解模型8
2.3  求解13
3 测量试验14
3.1样品支架的设计14
3.2 支撑层的选择14
3.3样品制备17
3.4 实验仪器20
3.5测量方法23
4 实验分析25 源￥自%六^^维*论-文+网=www.lwfree.cn
4.1氧化铝粉末样品辐射特性参数分析25
4.2误差分析30

1  绪论
1.1  研究背景及意义

1.1.1 窑炉隔热/保温涂层 基于红外积分球试验的粉体材料辐射特性分析研究:http://www.lwfree.cn/wuli/20180819/21663.html
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