Co-Ni-Fe-Cr系红外辐射材料自蔓延燃烧合成与应用  

Self-Propagating Combustion Synthesis and Application of Co-Ni-Fe-Cr Infrared Radiation Materials

作　　者：刘健[1] Liu Jian(The 13th Research Institute,CETC,Shijiazhuang 050051,China)

机构地区：[1]中国电子科技集团公司第十三研究所,石家庄050051

出　　处：《半导体技术》2023年第4期289-293,共5页Semiconductor Technology

摘　　要：采用溶液自蔓延燃烧合成法及煅烧法制备了Co-Ni-Fe-Cr系红外辐射粉体材料,对前驱体和煅烧样品的晶体结构、微观形貌和红外发射率进行了表征分析。结果表明,自蔓延燃烧得到的燃烧产物呈无定形态,显微结构为多孔薄片状。燃烧产物经800~1000℃煅烧处理后转变为尖晶石相,随煅烧温度升高晶粒长大并趋近尖晶石相八面体形貌。1000℃煅烧得到的粉体团聚较少且粒径分布均匀(平均粒径为0.6μm)。获得的Co0.5Ni0.5(Fe0.375Cr0.625)2O4粉体全波段法向红外发射率为0.92,添加质量分数20%的Ca-Mg-Zr-Al-Si玻璃粉配制成丝网印刷浆料,经施釉、干燥和800℃釉烧在氧化铝黑瓷基板表面形成致密釉层,釉层红外发射率达到0.87,材料可用于氧化铝陶瓷基红外加热器的研制。Co-Ni-Fe-Cr infrared radiation powder materials were prepared via self-propagating combustion synthesis and calcination methods.The crystalline structure,micromorphology and infrared emissivity of precursor and calcined samples were characterized and analyzed.The results show that the combustion products obtained by self-propagating combustion are amorphous,and exhibit porous-sheet morphologies.After calcinating from 800℃to 1000℃,the combustion products transform into spinel phase.With the increase of calcination temperature,the products show increased grain size and octahedral shape of spinel phase.The powders calcined at 1000℃have slight agglomeration with a uniform size distribution(0.6μm on average).The normal infrared emissivity of Co0.5Ni0.5(Fe0.375Cr0.625)2O4 powders is 0.92 in the whole band.20%mass fractions of Ca-Mg-Zr-Al-Si glass powders were added into infrared radiation materials to obtain screen-printing pastes.Dense glaze layer on black alumina ceramics was obtained after glazing,drying,and sintering at 800℃.The infrared emissivity of the glaze layer reaches up to 0.87.The material can be used for the development of alumina oxide ceramics based infrared heaters.

关 键 词：红外辐射材料 红外加热器 Co-Ni-Fe-Cr尖晶石 自蔓延燃烧合成 红外发射率 

分 类 号：TB39[一般工业技术—材料科学与工程]