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摘要：本文采用脉冲电镀法制备Cu-Ni-(Er,Y)合金膜，并分别在300℃、500℃、600℃、700℃、800℃、900℃下进行热处理。采用SEM、EDX方法对Cu-Ni-Er合金膜及Cu-Ni-Y合金膜进行表征，另外采用XRD方法对Cu-Ni-(Er,Y)合金膜进行表征。得出以下结论：扫描电镜结果表明：随着热处理温度的升高，Cu-Ni-Er合金膜镀层颗粒形状逐渐趋于扁平状，颗粒间相互联结且越发紧密，膜表面也随之平整细致；Cu-Ni-Y合金膜镀层颗粒逐渐细化，分布均匀，当热处理温度超过700℃时，膜表面出现裂缝及空洞，并随着温度的上升有着扩大的趋势。元素分析结果表明：在Cu-Ni-Er/Y的EDX谱图中均能检测到Cu、Ni及稀土元素Er/Y。随着热处理温度的升高，Cu-Ni-Er/Y合金膜中Ni的含量相对增加，Cu的含量相对减少，稀土Er3+较Y3+更能促进镍的沉积。X射线衍射结果表明：Cu-Ni合金膜在热处理温度为25℃~500℃时为Cu0.81Ni0.19晶型结构，Cu-Ni合金膜在热处理温度600℃~900℃时为Cu3.8Ni和Cu0.81Ni0.19晶型结构共存。Cu-Ni-Er合金膜在热处理温度25℃~900℃时为Cu3.8Ni晶型结构。Cu-Ni-Y合金膜在热处理温度25℃~700℃时为Cu0.81Ni0.19的晶型结构，Cu-Ni-Y合金膜在热处理温度800℃~900℃时为Cu0.81Ni0.19晶型结构和Cu3.8Ni的晶型结构共存。20737
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毕业论文关键词： 脉冲电镀法；Cu-Ni复合膜；铒；钇；热处理
Preparation of coating of Cu-Ni-(Er,Y)
Abstract: In this paper, using electroplating method to prepare Cu-Ni- (Er,Y) alloy membrane in nickel metal, and then heat treating them at 300℃、500℃、600℃、700℃、800℃、900℃. Characterization of Cu-Ni-Er alloy membrane and Cu-Ni-Y alloy membrane with using SEM, EDX methods, and characterization of Cu-Ni-(Er,Y) alloy membrane with using XRD methods. Coming to the following conclusions: By SEM analysis: as the temperature increases, the Cu-Ni-Y coating particles become gradually smaller. There is an interconnection between Cu-Ni-Er coating particles, and surface of an alloy film tends to be smooth; the Cu-Ni-Y coating particles become gradually smaller. When the temperature is over 700℃, membrane surface appears crackers and holes and they trend to expansion as the temperature increases. By EDX analysis: In the Cu-Ni-Er/Y 's EDX spectra could be detected Cu, Ni and rare earth elements Er/Y. As the heat treatment temperature, the content of Ni increases in Cu-Ni-Er/Y alloy films relatively, the content of Cu reduces in Cu-Ni-Er/Y alloy films relatively. Compared with Y3 +, rare earth Er3 + is better at promoting the deposition of nickel. By XRD analysis: Cu-Ni alloy membrane is Cu0.81Ni0.19 crystalline structure when the heat treatment temperature is 25℃~500℃, Cu-Ni alloy membrane is Cu3.8Ni and Cu0.81Ni0.19 crystalline structure when the heat treatment temperature is 600℃~900℃. Cu-Ni-Er alloy membrane is Cu3.8Ni crystalline structure when the heat treatment temperature is 25℃~900℃. Cu-Ni-Y alloy membrane is Cu3.8Ni crystalline structure when the heat treatment temperature is 25℃~700℃, Cu-Ni-Y alloy membrane is Cu0.81Ni0.19 and Cu3.8Ni crystalline structure when the heat treatment temperature is 800℃~900℃.
Key Words: Pulse Plating; Cu-Ni composite membrane; Erbium; Yttrium; Heat treatment
目 录
1 引言 1
1.1 氢气分离膜的类型 1
1.2 金属复合膜及其制备 2
1.2.1 物理气相沉积 2
1.2.2 化学气相沉积 2
1.2.3 化学镀法 3
1.2.4 电镀法 3
1.3 脉冲电镀的研究现状 3
1.3.1 脉冲镀锌极其合金 3
1.3.2 脉冲镀镍及其合金 4
1.3.3 稀土合金膜 4
1.4 稀土元素在电镀工艺中的特异性能 4