This work was supported by the Bengbu Yucheng New Materials Science and Technology Ltd. (No.2012QTXM0375) and the Natural Science Foundation of Anhui Province (No.1208085QE99).
Hydroxylamine sulfate (HAS) and sodium nitrite are used as the accelerators for zinc phos- phate coating on high carbon steel. Phase evolution of phosphate coating was investigated by X-ray diffraction. It is found ...