回火金属玻璃小角X射线散射强度的背底校正

BACKGROUND CORRECTION OF THE SAXS INTENSITIES SCATTERED BY THE AGED METALLIC GLASS

提出校正回火金属玻璃（非晶合金）小角ｘ射线散射强度的背底误差的方法：将淬火态非晶合金的小角Ｘ射线散射强度作为在相同的实验条件下得到的回火非晶合金小角Ｘ射线散射强度的背底而予以扣除。并将这样扣除背底和用通常方法扣除背底得到的结果相比较，由前者得到的散射强度遵从Ｐｏｒｏｄ律，并进而得到Ｐｏｒｏｄ常数Ｋ＿ｐ＝４．６０１３３１０￣（－２）（ｎｍ￣（－３）），积分不变量￣０Ω＝１．６３（ｎｍ￣（－２）），比内表面Ｓ＿ｐ＝８４ｍ￣２／ｃｍ￣３，Ｐｏｒｏｄ半径Ｒ＿ｐ＝４．４ｎｍ用通常方法扣除背底后的散射强度不满足Ｐｏｒｏｄ规律。

A new methodbackground correction of SAXS intensities scattered by theaged metallic glass is proposed.The inte nsities scattered by the as-quenched samplewere taken as the bacground scattering.This motliod was applied to the backgroundcorrection of the SAXS intensities scattered by Cu￣(73)Sn_6Ni_6P_(15) metallic glass aged at473 K for 4hs. Porod constant K′_p=4.6 × 10￣(-2)(nm￣(-3))￣Ω_s=1.63(nm￣(-2)),specificinner surface S_p=84m￣2/cm￣3, and Porod's radius of the crystalline particle R_p=4.4nm were obtained by using this method of backgroud correction.