Effects of Cr contents in Fe-based bulk metallic glasses on the glass forming ability and the corrosion resistance
Effects of Cr contents in Fe-based bulk metallic glasses on the glass forming ability and the corrosion resistance
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DOI：
10.1016/j.matchemphys.2008.08.057
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发表时间：
2009-02
影响因子：
4.6
通讯作者：
S. L. Wang;Hezhen Li;X. F. Zhang;S. Yi
中科院分区：
文献类型：
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作者：
S. L. Wang;Hezhen Li;X. F. Zhang;S. Yi
以工业原料为原料，制备了非晶形成能力强、耐腐蚀性好的铁基大块非晶(Fe69.9−xC7.1Si3.3B5.5P8.7CrxMo2.5Al2.0Co1.0(x=0.0，2.3~12.3)。铁基大块非晶玻璃的非晶形成能力随铬含量的增加而降低，而耐蚀性随铬含量的增加而提高。在0.5M H_2SO_4和1N HCl溶液中，含12.3at%铬的非晶态样品可形成均匀的钝化层，从而使非晶态样品在298K下对奥氏体不锈钢(SUS304)具有良好的耐蚀性。通过系统地控制铬含量，可以大量生产出玻璃形成能力和耐蚀性最佳组合的铁基大块金属玻璃，具有广泛的实际应用价值。
Fe-based bulk metallic glasses of Fe69.9−xC7.1Si3.3B5.5P8.7CrxMo2.5Al2.0Co1.0(x=0.0, 2.3–12.3) with high glass forming ability and good corrosion resistance were fabricated using industrial raw materials. Glass forming ability of the Fe-based bulk metallic glasses tends to decrease with the Cr content, while the corrosion resistance increases with the Cr content. A homogeneous passive layer on the amorphous sample with 12.3at% Cr can be formed leading to superior corrosion resistance of the amorphous sample to an austenitic stainless steel (SUS304) in the 0.5M H2SO4and 1N HCl solutions at 298K. Fe-based bulk metallic glasses with an optimum combination of glass forming ability and corrosion resistance can be produced in large quantities through a systematic control of the Cr content for extensive practical applications.