摘要
为拓展高熵尖晶石红外辐射涂层在节能减排领域的应用,首先以氧化镁、氧化铝、氧化钴、氧化镍、氧化铜、氧化锌为原料,按1∶5∶1∶1∶1∶1的化学计量比混合,经1600℃热处理8 h制备高熵尖晶石。然后在30 mm×30 mm×10 mm的刚玉-莫来石小试块表面喷涂高熵尖晶石红外辐射涂层。探究不同热处理温度(1300、1400、1500和1600℃保温2 h)对该涂层的红外辐射性能和结合强度的影响。结果发现:热处理温度由1300℃提高至1600℃时,涂层的孔隙逐渐减少,结构逐渐致密;涂层经1600℃保温2 h后室温下0.2~2.5μm波段和2.5~15μm波段的红外发射率分别达到0.86和0.90;当热处理温度为1500℃时,涂层与基体的结合强度最高,达到6.16 MPa。
To expand the application of high-entropy spinel infrared radiation coatings in the field of energy saving and emission reduction,high-entropy spinel was prepared by heat treatment at 1600℃for 8 h with magnesia,alumina,cobalt oxide,nickel oxide,copper oxide and zinc oxide as raw materials,mixed in a stoichiometric ratio of 1∶5∶1∶1∶1∶1.Then it was sprayed on the surface of corundum-mullite small test blocks of 30 mm×30 mm×10 mm to form a high-entropy spinel infrared radiation coating.The effects of different heat treatment temperatures(1300,1400,1500 and 1600℃for 2 h)on the infrared radiation performance and bonding strength of the coating were investigated.It is found that as the temperature increases from 1300 to 1600℃,the pores of the coating are gradually reduced,leading to a denser structure.The coating heat treated at 1600℃for 2 h has the infrared emissivity of 0.86 in the 0.2-2.5μm band and 0.90 in the 2.5-15μm band at room temperature.After the heat treatment at 1500℃,the bonding strength between the coating and the substrate is the highest,6.16 MPa.
作者
孙帅蒙
杨爽
张美杰
付绿平
黄奥
顾华志
Sun Shuaimeng;Yang Shuang;Zhang Meijie;Fu Lyuping;Huang Ao;Gu Huazhi(State Key Laboratory of Advanced Refractories,Wuhan University of Science and Technology,Wuhan 430081,Hubei,China)
出处
《耐火材料》
北大核心
2025年第6期511-515,共5页
Refractories
基金
国家自然科学基金面上资助项目(52172023,52272022)
湖北省自然科学基金杰出青年项目(2021CFA071)。
关键词
高熵尖晶石
红外辐射涂层
热处理温度
发射率
结合强度
high-entropy spinel
infrared radiation coatings
heat treatment temperature
emissivity
bonding strength
