摘要
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 effect of Mo contents on the corrosion resistance of bulk metallic glasses Fe71.2-xC7.0Si3.3B5.5P8.7Cr2.3Al2.0Mox fabricated using the industrial raw materials has been investigated in the 3.5%NaCl and 1N HCI solutions, respectively. The results show the corrosion resistance will be improved with the increase of Mo contents. Among exhibits the best corrosion resistance due to the passivation potential and the lowest corrosion rate. the above alloys, Fe64.7C7.0Si3.3B5.5P8.7Cr2.3Al2.0Mo6.5 lowest passivation current, the highest critical The corrosion resistance will be enhanced with increase of Mo, which is mainly attributed to the following reasons： the formation of chemically and structurally homogeneous single-phase solid solution; the formation of Cr-rich passivating film on the surface of samples, while Mo addition further prevents the dissolution of Cr during passivity; the formation of MoO3 and other complex passivating film; the enhancement of pitting corrosion resistance caused by the addition of Mo.
出处
《铸造》
CAS
CSCD
北大核心
2010年第2期145-148,共4页
Foundry
关键词
工业生铁
铁基块体金属玻璃
玻璃形成能力
腐蚀性能
pig iron
Fe-based bulk metallic glass
glass forming ability
corrosion properties
