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采用电化学极化曲线和变温失重法研究了Ti_(35)Zr_(30)Be_(20)Cu_(7.5)Co_(7.5)块体非晶合金分别在0.5、1、2 mol/L NaOH溶液中的腐蚀行为,并比较了304不锈钢的耐蚀性。极化曲线测试结果表明,Ti_(35)Zr_(30)Be_(20)Cu_(7.5)Co_(7.5)块体非晶合金在0.5、1、2mol/L NaOH溶液中均表现出良好的耐蚀性,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,极化曲线左移,耐蚀性降低。非晶合金的自腐蚀电位高于不锈钢。在293、313、333K,2mol/L NaOH溶液的不同温度失重腐蚀中,随温度增加,其非晶合金均较不锈钢耐蚀性高。探讨了NaOH溶液浓度变化、温度变化对Ti_(35)Zr_(30)Be_(20)Cu_(7.5)Co_(7.5)块体非晶合金的耐蚀性机理。
The electrochemical polarization curve and temperature-dependent weight loss method were used to study the effect of Ti_ (35) Zr_ (30) Be_ (20) Cu_ (7.5) Co_ (7.5) bulk amorphous alloy in 0.5, 1, 2 mol / L NaOH solution The corrosion behavior of 304 stainless steel was compared with that of 304 stainless steel. The results of polarization curves show that all the amorphous alloys of Ti35 Zr30 Cu18.5Cu 7.5 Co7.5 have good corrosion resistance in 0.5, 1, 2 mol / L NaOH solution Sexual and anodic polarization curve showed obvious passivation characteristics. As the NaOH solution concentration increases, the polarization curve shifts to the left and the corrosion resistance decreases. Amorphous alloy corrosion potential higher than stainless steel. In 293,313,333K, 2mol / L NaOH solution of different temperature weight loss corrosion, with the increase of temperature, the amorphous alloy corrosion resistance than stainless steel. The mechanism of corrosion resistance of Ti_ (35) Zr_ (30) Be_ (20) Cu_ (7.5) Co_ (7.5)