CAJ | 학술논문

采用传统的固相烧结工艺制备得到 Ca1-xLaxMnO3(CLMO),Ca1-xBixMnO3(CBMO)(x=0.0~0.2)陶瓷样品,通过 XRD 和 FT-IR 对样品进行表征,研究了晶体结构,温度和不同波段下的红外发射率之间的关系.研究结果表明:CLMO 和 CBMO 陶瓷样品具有单一物相.晶格畸变产生了新的红外吸收带.CLMO 和 CBMO 陶瓷在8~14μm 波段的红外发射率随着温度的升高而升高,在400℃左右红外发射率发生突变.在3~5μm 波段的红外发射率随着温度的升高而缓慢升高.CLMO 和 CBMO陶瓷样品在8~14μm 波段具有作为热控制材料的潜在应用前景.
채용전통적고상소결공예제비득도 Ca1-xLaxMnO3(CLMO),Ca1-xBixMnO3(CBMO)(x=0.0~0.2)도자양품,통과 XRD 화 FT-IR 대양품진행표정,연구료정체결구,온도화불동파단하적홍외발사솔지간적관계.연구결과표명:CLMO 화 CBMO 도자양품구유단일물상.정격기변산생료신적홍외흡수대.CLMO 화 CBMO 도자재8~14μm 파단적홍외발사솔수착온도적승고이승고,재400℃좌우홍외발사솔발생돌변.재3~5μm 파단적홍외발사솔수착온도적승고이완만승고.CLMO 화 CBMO도자양품재8~14μm 파단구유작위열공제재료적잠재응용전경.
Ca1-xLaxMnO3(CLMO) and Ca1-xBixMnO3 (CBMO)(x=0.0-0.2) ceramics were prepared by standard solid-state reaction method. The samples were characterized with XRD and FT-IR. The relationship of the structure, temperature and normal emissivity in different wavebands was investigated. The results show that the samples have single phase. New infrared absorption occurs due to crystal distortion. In the 8-14 μm waveband, the normal emissivity of CLMO and CBMO ceramics increases with increasing temperature, and the drastic change occurs at the range of 400℃. In the 3-5 μm waveband, the normal emissivity of CLMO and CBMO ceramics gradually increases with increasing temperature. Therefore, CLMO and CBMO ceramics may have the potential application as thermal control materials.