热处理工艺对铁基非晶合金电化学腐蚀性能的影响

创新性实验设计（论文）

题目：热处理工艺对铁基非晶合金电化学腐蚀

性能的影响

学院：材料科学与工程学院

专业名称：金属材料工程

班级学号：

学生姓名：

指导教师：

二O一一年六月

热处理工艺对铁基非晶合金电化学腐蚀性能的影响

学生姓名：班级：

指导老师：

摘要：采用真空电弧熔炼铜模铸造技术制备出直径为3mm的Fe41Co7Cr15Mo14C15B6Y2非

晶合金，并利用非晶晶化退火法制备部分晶化的Fe

41Co

7

Cr

15

Mo

14

C

15

B

6

Y

2

非晶合金，退火

工艺分别是610℃、630℃、645℃，保温时间都为8h。利用X射线衍射仪和示差扫描量热计对该非晶的非晶特性及其晶化过程进行了研究，并用电化学阻抗技术和极化曲

线的测试研究了Fe

41Co

7

Cr

15

Mo

14

C

15

B

6

Y

2

非晶合金在1.5M HCl溶液里的电化学腐蚀行为，

同时还研究不同的热处理温度对材料的结构及在1.5M HCl溶液里耐腐蚀性能的影响。

结果表明：非晶合金比经退火后的Fe

41Co

7

Cr

15

Mo

14

C

15

B

6

Y

2

非晶合金耐腐蚀性要好；随着

热处理温度升高，Fe

41Co

7

Cr

15

Mo

14

C

15

B

6

Y

2

非晶合金的耐腐蚀性能逐渐降低.。

关键词：非晶合金、电化学腐蚀、耐蚀性能

指导老师签名：

The effect of different Heat treatment on the electrochemical corrosion of Fe41Co7Cr15Mo14C15B6Y2 amorphous alloy Student name:Dumeican,zhangli class:080121

Supervisor:Qingqing Chen

Abstrac t:Fe41Co7Cr15Mo14C15B6Y2(at.%) bulk metallic glass(BMG) with a diameter of 3mm was fabricated by copper mold casting, and the partially crystallized Fe41Co7Cr15Mo14C15B6Y2 alloys were obtained by annealing Annealing temperatures were separately set at 610℃、630℃and 645℃．The amorphous and their crystallization processes were identified by differential scanning calorimeter and X-ray diffraction．A comparative study of the electrochemical corrosion behaviors of amorphous Fe41Co7Cr15Mo14C15B6Y2 alloys was performed by the electrochemical impedance spectroscopy (EIS) in 1.5M HCl solution．The influence of heat treatment at different temperatures On the alloy structure and corrosion resistance in 1.5M HCl solutions was investigated．The results show that the crysmllmation process of the amorphous can be divided into two steps，and the amorphous has a higher corrosion resistance than the annealed. The corrosion resistance of the amorphous decreased as the thermal treatment temperature rises．.

Fe41Co7Cr15Mo14C15B6Y2amorphous alloy and the samples after the heat treatment process by 1.5M HCl solution in the electrochemical impedance spectroscopy.The results showed that the electrochemical reaction of amorphous alloys Fe41Co7Cr15Mo14C15B6Y2 resistance is greater than heat-treated samples.They have the following law of resistance size: ：R1(amorphous)＞R1(610℃+8h)＞R1(630℃+8h)＞R1(645℃+8h), than that of amorphous alloy samples after heat treatment has better corrosion resistance.

Keywords: amorphous alloy electrochemical corrosion corrosion resistance Signature of Supervisor: