利用电化学极化曲线和电化学阻抗(EIS)测试方法研究了Fe41Co7Cr15Mo14C15B6Y2块体非晶合金在0.5,1,2以及4mol/L NaOH溶液中的腐蚀行为.极化曲线测试结果表明,Fe41Co7Cr15Mo14C15B6Y2块体非晶合金在各种浓度的NaOH溶液中都具有很好的耐蚀性,阳极极化曲线表现出明显的钝化特征.随着NaOH溶液浓度的增大,其耐蚀性能逐渐下降.EIS结果显示,在开路电位下,Fe41Co7Cr15Mo14C15B6Y2非晶合金在不同浓度下的NaOH溶液中的Nyquist图均由单一的容抗弧构成.随着NaOH溶液浓度的增大,容抗弧的幅值越来越小,说明非晶合金的耐蚀性能逐渐减弱.这一结果与极化曲线结果一致.
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