Composition and structure of dry- in - place CrO3 - H3PO4-SiO2 chromating film on galvanized steel sheet were studied by means of XRD, SEM, EDXA and GDS.

• 采用XRD、EDXA、GDS等方法研究了镀锌钢板表面涂敷型CrO3-H3PO4－SiO2系钝化膜的成分与结构。