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Ｆｅ－Ｗ非晶镀层经铬酸盐钝化处理，可获得具有装饰效果的含Ｃｒ钝化膜。经测定，孔蚀电位较钝化前正移１．６８Ｖ，明显改善了抗ＣＩ－腐蚀的能力。ＡＥＳ与ＸＰＳ的分析结果表明：钝化膜由内外两层构成，外层为Ｆｅ（ＣｒＯ４）３·Ｃｒ２（ＣｒＯ４）３／Ｃｒ２（Ｃｒ２Ｏ７）３·Ｆｅ（ＯＨ）３／ＦｅＯＯＨ·ＷＯ３·ｎＨ２Ｏ等化合物，内层由Ｃｒ２Ｏ３，ＣｒＯ３，ＣｒＯＯＨ，ＦｅＯ，Ｆｅ２Ｏ３及ＷＯ３组成。钝化膜厚度约为６０ｎｍ。该双层饨化膜有效地阻止了Ｃｌ－对基体金属的腐蚀。
Chromium passivation of Fe-W amorphous coatings results in a Cr-containing passive film with decorative effect. It was determined that the pitting potential shifted positively to 1.68V before passivation, which markedly improved the resistance to CI-corrosion. The results of AES and XPS show that the passivation film consists of two layers, the outer layer is Fe (CrO4) 3 · Cr2 (CrO4) 3 / Cr2 (Cr2O7) 3 · Fe (OH) 3 / FeOOH · WO3 · nH2O Compound, the inner layer is composed of Cr2O3, CrO3, CrOOH, FeO, Fe2O3 and WO3. Passivation film thickness of about 60nm. The double-layer coating film effectively prevents the corrosion of the base metal by Cl-.