CAJ | 학술논문

通过溶胶-凝胶和真空热处理工艺在石英基底上制备了二氧化钒薄膜,对制备出的薄膜进行了X射线衍射及X射线光电子能谱分析,结果表明所制备出的薄膜价态单一,纯度较高,薄膜为多晶态,晶粒尺寸约为27 nm.利用红外热像仪拍摄了薄膜在不同温度下的红外热图并计算了发射率,结果表明二氧化钒薄膜7.5～14 μm波段发射率在相变时发生突变,突变量可达0.6,具有优异的热致变发射率性能,在红外自适应伪装等领域应用前景广阔.
통과용효-응효화진공열처리공예재석영기저상제비료이양화범박막,대제비출적박막진행료X사선연사급X사선광전자능보분석,결과표명소제비출적박막개태단일,순도교고,박막위다정태,정립척촌약위27 nm.이용홍외열상의박섭료박막재불동온도하적홍외열도병계산료발사솔,결과표명이양화범박막7.5～14 μm파단발사솔재상변시발생돌변,돌변량가체0.6,구유우이적열치변발사솔성능,재홍외자괄응위장등영역응용전경엄활.
The VO_2 thin film was prepared by inorganic sol-gel process and vacuum post-annealing treatment. The film was characterized by X-ray diffraction and X-ray photoelectron spectroscopy, and results show that the pure VO_2 thin film without other valences has been prepared. The film is polycrystalline with grain size about 30 nm. The thermal images of the VO_2 thin film at different temperatures were derived using thermal imager and the emissivity was calculated. It was found that 7.5～14μm emissivity of the VO_2 thin film could change abruptly by about 0.6 during the phase transition, which shows that the VO_2 thin film exhibits excellent thermochromic properties and is meaningful in the adaptive infrared camouflage.