The saturation magnetization study and first-principles calculation Of Fe-Si-Al
Sendust alloy (Fe-Si-Al) flaky particles were used as microwave absorbing material because of its excellent soft magnetic properties such as high saturation magnetization, high permeability, low magnetocrystalline anisotropy, and nearly zero magnetostriction.[1] The structure of FeSiAl alloy is similar to that of FeAl alloy; O. Ikeda etc.[2] studied the transformation among A2, B2 and DO3 structures. The electromagnetic and microwave absorption properties of the composites employing FeSiAl alloy powders with different phase structure, as shown in Figure 1, were investigated. The magnetic moment of the different phase structure were calculate by the First-principles calculation. The results showed that the phase structure had significant influence on the saturation magnetization (Ms).
The procedures of flocculation,antiscaling,anticorrosion and sterilization can be completed in one step during the treatment of oil field wastewater with Z series of multifunctional reagents.The mass concentration of total iron in the treated effluent is 0.5 mg/L or less and that of Ca 2+ and Mg 2+ is reduced from 1875 mg/L to 350 mg/L.The other indexes can also meet the ministerial standards.The quality of the treated effluent approach to that of geologic strata water with good stability and compatiblity.