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系统研究了3.5%NaCl和1N HCl两种溶液中Mo对工业原材料制备的块体非晶合金Fe71.2-xC7.0Si3.3B5.5P8.7Cr2.3Al2.0Mox的抗腐蚀性能的影响,结果发现随着Mo含量的增加,两种溶液中均表现出抗腐蚀性能的增强。其中Fe64.7C7.0Si3.3B5.5P8.7Cr2.3Al2.0Mo6.5块体非晶合金因为其最低的钝化电流、最高的临界钝化电位、最低的腐蚀速率而表现出最高的抗腐蚀能力。抗腐蚀性能随着Mo含量增加而增强,其可能的原因包括:化学和结构均匀单相固溶体的形成;样品表面形成了富Cr的钝化膜,而Mo则在钝化过程中进一步阻止了Cr的溶解;MoO3及其他的复合钝化膜的形成以及Mo的添加在Cl-离子介质中所引起的抗点蚀能力的增强。
The effects of Mo on the corrosion resistance of bulk amorphous alloy Fe71.2-xC7.0Si3.3B5.5P8.7Cr2.3Al2.0Mox prepared from industrial raw materials in 3.5% NaCl and 1N HCl solutions were systematically investigated. The results showed that With the increase of Mo content, the corrosion resistance of both solutions was enhanced. Which Fe64.7C7.0Si3.3B5.5P8.7Cr2.3Al2.0Mo6.5 bulk amorphous alloy because of its lowest passivation current, the highest critical passivation potential, the lowest corrosion rate and showed the highest corrosion resistance . The corrosion resistance increases with the increase of Mo content. Possible reasons include: the formation of uniform single-phase solid solution with chemical and structural structure; the Cr-rich passivation film formed on the surface of the sample, while Mo further prevents Cr ; The formation of MoO3 and other composite passivation films and the enhancement of pitting corrosion resistance caused by the addition of Mo in the Cl- ion medium.