摘要本文使用电弧炉制备母合金,并利用单辊甩带急冷方法制备了Ti40Zr10Cu34-xPd14Sn2Nbx(x=0,1,3,5)及 Ti40Zr10Cu34Pd14Sn1M1(M=Nb,Ta,Au,Pt)非晶合金,并用XRD方法确定非晶合金结构。利用动态极化曲线及电化学交流阻抗谱( EIS)研究了在0.144mol/L NaCl溶液中及0.2mol/L PBS溶液中,非晶合金Ti40Zr10Cu34-xPd14Sn2Nbx(x=0,1,3,5)及Ti40Zr10Cu34Pd14Sn1M1(M=Nb,Ta,Au,Pt)的电化学性能。结果表明研究的Ti基非晶合金具有良好的耐腐蚀性能,在NaCl溶液下,阳极出现了自发钝化的特征,当电位很高时,因为Cl-的存在非晶合金仍旧出现了点蚀现象。添加微量元素如Nb,Ta能有效的增加非晶耐腐蚀性,非晶合金的耐腐蚀性随着Nb含量的增加而增强。在0.144mol/L Nacl溶液和0.2mol/L PBS溶液中对比得到磷酸根离子能有效的有抑制点蚀。30214
关键词 Ti基非晶合金 微量元素 电化学行为 耐腐蚀性能
毕业论文设计说明书外文摘要
Title The electrochemical behavior of titanium base Amorphous alloy
Abstract
Ti40Zr10Cu34-xPd14Sn2Nbx(x=0,1,3,5)and Ti40Zr10Cu34Pd14Sn1M1(M=Nb,Ta,Au,Pt) amorphous alloys were prepared by arc-melting and melt spinning.XRD were used to determine the structure of amorphous alloy. Polarization curve and ac impedance spectroscopy were utilized to study the electrochemical properties of Ti40Zr10Cu34-xPd14Sn2Nbx(x=0,1,3,5)and Ti40Zr10Cu34Pd14Sn1M1(M=Nb,Ta,Au,Pt) amorphous alloy in 0.144 mol/L NaCl solution and 0.2 mol/L PBS .The results show that the Ti-based amorphous alloys exhibit good corrosion resistance. In 0.144M NaCl solution, all of the Ti-based amorphous alloys are spontaneous passivated with a low current density and large passive region. While with the further increasing of potential, pitting still occurs. The corrosion resistance of the Ti-based amorphous increase with the minor addition of Ta or Nb. And it is more effective with further addition of Nb. Furthermore, existing of phosphate ions acting as pitting inhibitor is the reason that higher corrosion resistance was observed in PBS solution.
Keywords Ti-base amorphous alloy Trace elements The electrochemical behavior Corrosion resistance
目 次
1 绪论 1
1.1 课题背景及研究的现状 1
1.1.1 背景资料 1
1.1.2 非晶态合金的发展历史和研究方向现状 1
1.1.3 Ti基非晶合金研究现状 2
1.2 非晶合金材料的制备方法 2
1.2.1 块体非晶合金材料的制备方法 2
1.2.2 薄带非晶合金材料的制备方法 3
1.3 非晶合金的性能和生物医用研究进展 3
1.3.1非晶合金材料的性能与应用 3
1.3.2 Ti基非晶合金生物医用的研究进展 4
1.4元素的添加对非晶合金的影响 5
2 实验方法 6
2.1 试样制备 6
2.1.1 使用电弧炉制备母合金 6
2.2非晶合金制备及非晶合金结构确定 6
2.2.1单辊甩带急冷方法制备非晶合金 6
2.2.2用XRD方法确定非晶合金结构 7
2.3实验所用仪器及步骤 7
3 实验数据分析 9
3.1 XRD 结构特征分析 9
3.1.1不同Nb添加量XRD 结构特征分析 9
3.1.2 不同的微量元素添加XRD 结构特征分析 9 钛基非晶合金的电化学行为研究:http://www.youerw.com/cailiao/lunwen_25822.html