The aging process of overbased calcium alkyl salicylate is studied with FT IR, freeze etching electron microscopic observation (FE EM) and test of calcium distribution measurement.

• 采用冷冻蚀刻电镜(FE-EM)、傅立叶红外光谱(FT-IR)及钙分布测定等研究了高碱度烷基水杨酸钙的老化过程,并探讨了老化机理。