采用溶胶-凝胶法合成了铜铬黑(CuCr2O4)粉体,并以其为基料利用喷涂法在Q235钢表面制备了红外辐射涂层.研究表明,CuCr2O4粉体具有良好的高温稳定性,并在近红外波段具有良好的红外吸收性能,吸收率达到0.91.通过X射线衍射仪、紫外-可见-近红外分光光度计和IR-2双波段发射率测试仪对CuCr2O4涂层的物相组成及红外辐射性能进行了分析,并考察了涂层的抗热震性能和红外辐射加热性能.结果表明,CuCr2O4涂层在3～5 μm波段具有良好红外辐射性能,发射率达0.86,此外该涂层还具有良好的抗热震性能和显著的加热节能效果.
CuCr2 O4 powders were synthesized by sol-gel process,and the infrared radiation coatings were prepared on the surface of Q235 steel by spray method using CuCr2O4 powders as raw materials.The CuCr2O4 powders have good thermal stability and infrared absorption performance in near infrared band,the absorptivity can reach 0.91.The crystalline phase and infrared radiation properties of the CuCr2O4 coatings were analyzed by means of X-ray diffraction,UV-Vis-NIR spectrophotometer and dual-band IR emissometer.In addition,the thermal shock resistance and infrared radiation heating performance of the coatings were investigated.The results show that the CuCr2O4 coatings have good infrared radiation performance in the wave band of 3-5 μm,the emissivity is 0.86,and the coatings also have good thermal shock resistance and significant energy saving effect in actual heating.
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