Preparation of Low Emissivity and Low Gloss Filler Al-Sr10 and its Extinction Mechanism
To evaluate the nature of the low gloss properties of Al-Sr10,X-ray diffraction,X-ray energy dispersive spectroscopy,face scan elemental analysis,8-14 μm infrared emissivity,gloss,and 400-760 nm visible reflectance tests are performed on the material.The Al-Sr10 filler is prepared by high-energy ball milling,and changes in the components,morphology,and optical properties of the Al-Sr10 filler with the ball milling time are evaluated by scanning electron microscopy.The results show that the surface of Al-Sr10 is easily oxidized to form gray-black strontium oxide,and the effect of strontium in the solid solution leads to the extinction of the material.The components of the Al-Sr10 filler do not change with the ball milling time,and the lamellarization,emissivity,and gloss properties of the material increase with time.The degree of lamellarization of the filler after 15 h of ball milling is high,the emissivity is as low as 0.123,and the gloss is as low as 3.8.
Al-Sr10low glossPlasma excitation effectemissivityball milling time