本文選題：光譜發(fā)射率 + 傅里葉紅外光譜儀　； 參考：《河南師范大學(xué)》2017年碩士論文

【摘要】：光譜發(fā)射率是一項(xiàng)重要的熱物理參數(shù),在諸多領(lǐng)域中發(fā)揮著越來越重要的作用。隨著科學(xué)技術(shù)的快速發(fā)展,對(duì)材料發(fā)射率的精確測(cè)量提出了更高的要求,因此,研究材料的光譜發(fā)射率對(duì)推動(dòng)多個(gè)行業(yè)的發(fā)展具有重要的實(shí)用價(jià)值和科研意義。文章第一章介紹了光譜發(fā)射率的分類及其基本測(cè)量方法,對(duì)金屬光譜發(fā)射率的研究意義及現(xiàn)狀進(jìn)行了簡(jiǎn)要總結(jié)。并對(duì)現(xiàn)階段發(fā)射率測(cè)量技術(shù)存在的問題進(jìn)行了概述。文章第二章分析了溫度、波長(zhǎng)、表面條件以及測(cè)量環(huán)境等因素對(duì)金屬光譜發(fā)射率測(cè)量的影響,并簡(jiǎn)要介紹了紅外輻射相關(guān)基本理論。文章第三章介紹了基于傅里葉變換紅外光譜儀的發(fā)射率測(cè)量裝置,并對(duì)裝置的加熱系統(tǒng)、黑體爐、傅里葉變換紅外光譜儀、光學(xué)系統(tǒng)四個(gè)部分進(jìn)行了描述。該套裝置的測(cè)量溫度范圍為300-1273K,波長(zhǎng)范圍為8-15μm,并可以通過更換相關(guān)的設(shè)備儀器進(jìn)行拓展。文章第四章利用實(shí)驗(yàn)室發(fā)射率測(cè)量裝置探究金屬鎳的光譜發(fā)射率特性。得出以下結(jié)論:在氬氣保護(hù)下,金屬鎳的光譜發(fā)射率在8-10μm范圍內(nèi)隨著波長(zhǎng)的增大而增大,在10-15μm范圍內(nèi)隨著波長(zhǎng)的增大而減小;在500-680K溫度范圍內(nèi),鎳的光譜發(fā)射率隨溫度變化速率較大,從680K開始,鎳的光譜發(fā)射率隨溫度變化速率降低,發(fā)射率隨溫度緩慢增大,當(dāng)溫度高于973K時(shí),發(fā)射率隨溫度變化速率趨近為零;金屬鎳的光譜發(fā)射率隨粗糙度的增大而增大,不過粗糙度對(duì)于金屬鎳的光譜發(fā)射率的影響較為復(fù)雜,并非線性關(guān)系。鎳的表面形成氧化膜后,其光譜發(fā)射率數(shù)值明顯增加,可見鎳的氧化物的發(fā)射率數(shù)值要遠(yuǎn)遠(yuǎn)高于純鎳,除此之外,輻射能量在氧化膜表面發(fā)生的干涉效應(yīng)也會(huì)對(duì)發(fā)射率數(shù)值產(chǎn)生影響。文章第五章系統(tǒng)性研究了鈷的發(fā)射率特性。金屬鈷和鎳同屬一族,性質(zhì)相近,都具有鐵磁性。實(shí)驗(yàn)結(jié)果表明:金屬鈷的光譜發(fā)射率在8-10μm范圍內(nèi)出現(xiàn)波峰波谷,在10-15μm范圍內(nèi)隨著波長(zhǎng)的增大而減小;鈷的光譜發(fā)射率對(duì)于溫度的變化響應(yīng)靈敏,在其他條件相同的情況下,發(fā)射率和溫度呈正比關(guān)系;金屬鈷表面粗糙程度越大,其光譜發(fā)射率數(shù)值也越大;在金屬鈷表面發(fā)生氧化的過程中,其光譜發(fā)射率變化較為復(fù)雜:當(dāng)氧化時(shí)間低于90分鐘時(shí),發(fā)射率曲線震蕩明顯;當(dāng)氧化時(shí)間超過90分鐘后,光譜發(fā)射率曲線趨于穩(wěn)定。這種現(xiàn)象與鈷的氧化物種類有關(guān)。
[Abstract]:Spectral emissivity is an important thermophysical parameter and plays a more and more important role in many fields. With the rapid development of science and technology, the accurate measurement of emissivity of materials is required. Therefore, the study of spectral emissivity of materials has important practical value and scientific significance to promote the development of many industries. In the first chapter, the classification of spectral emissivity and its basic measurement methods are introduced, and the significance and present situation of metal spectral emissivity are summarized briefly. The problems of emissivity measurement are summarized. In the second chapter, the influence of temperature, wavelength, surface conditions and measuring environment on the measurement of metal spectral emissivity is analyzed, and the basic theory of infrared radiation is briefly introduced. In the third chapter, the emissivity measurement device based on Fourier transform infrared spectrometer is introduced. The heating system, blackbody furnace, Fourier transform infrared spectrometer and optical system are described. The measuring temperature range of the device is 300-1273K and the wavelength range is 8-15 渭 m, which can be extended by replacing the related equipment. In chapter 4, the spectral emissivity characteristics of nickel metal are investigated by means of laboratory emissivity measurement device. The following conclusions are drawn: the spectral emissivity of nickel increases with the increase of wavelength in the range of 8-10 渭 m and decreases with the increase of wavelength in the range of 10-15 渭 m, and in the temperature range of 500-680K under argon protection, the emissivity of nickel increases with the increase of wavelength in the range of 8-10 渭 m, and decreases with the increase of wavelength in the range of 10-15 渭 m. The spectral emissivity of nickel decreases with temperature from 680K, and increases slowly with temperature. When temperature is higher than 973 K, the emissivity tends to zero with temperature. The spectral emissivity of nickel increases with the increase of roughness, but the effect of roughness on the spectral emissivity of nickel is complex and not linear. After the formation of oxide film on the surface of nickel, its spectral emissivity increases obviously, and the emissivity of nickel oxide is much higher than that of pure nickel. The interference effect of radiation energy on the surface of oxide film will also affect the emissivity. In chapter 5, the emissivity of cobalt is studied systematically. Cobalt and nickel belong to the same family, similar properties, both have ferromagnetism. The experimental results show that the spectral emissivity of cobalt appears in the range of 8-10 渭 m, and decreases with the increase of wavelength in the range of 10-15 渭 m, and the spectral emissivity of cobalt is sensitive to the change of temperature. The higher the roughness of cobalt surface, the greater the value of spectral emissivity. In the oxidation process of cobalt metal surface, the variation of spectral emissivity is more complex: when the oxidation time is less than 90 minutes, The emissivity curve oscillates obviously, and when the oxidation time exceeds 90 minutes, the spectral emissivity curve tends to be stable. This phenomenon is related to the species of cobalt oxides.
【學(xué)位授予單位】：河南師范大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TG146.1

【參考文獻(xiàn)】

相關(guān)期刊論文 前5條

1 張凱華;于坤;劉玉芳;王文寶;;大氣環(huán)境中Al5052光譜發(fā)射率研究[J];河南師范大學(xué)學(xué)報(bào)(自然科學(xué)版);2014年01期

2 吳飛;王智勇;江振經(jīng);;低發(fā)射率涂層材料研究[J];宇航材料工藝;2011年03期

3 劉玉芳;胡壯麗;施德恒;;一種測(cè)量發(fā)射率的實(shí)驗(yàn)裝置[J];光學(xué)學(xué)報(bào);2010年03期

4 施德恒,劉玉芳,陳玉科,朱遵略,孫金鋒;一種高精度光纖測(cè)溫系統(tǒng)工作波長(zhǎng)的優(yōu)化設(shè)計(jì)[J];光學(xué)學(xué)報(bào);2004年04期

5 鄭兆平,曾漢生,丁翠嬌,劉占增,蔣揚(yáng)虎,朱小平;紅外熱成像測(cè)溫技術(shù)及其應(yīng)用[J];紅外技術(shù);2003年01期

相關(guān)博士學(xué)位論文 前1條

1 戴景民;多光譜輻射測(cè)溫技術(shù)研究[D];哈爾濱工業(yè)大學(xué);1995年

，

本文編號(hào)：1820925