3D打印高温合金异形内通道化学抛光液性能研究  

Study on the Performance of Chemical Polishing Fluid in Inner Channel of 3D Printing High Temperature Alloy

作　　者：宋振兴[1] 张理操 李岱原 孟香茗 王培瑶 王宏智[3] SONG Zhenxing;ZHANG Licao;LI Daiyuan;MENG Xianming;WAND Peiyao;WAND Hongzhi(College of Science,Tianjin University of Science and Technology,Tianjin 300457,China;College of Chemical Engineering And Material Science,Tianjin University of Science and Technology,Tianjin 300457,China;College of Chemical Engineering,Tianjin University,Tianjin 300072,China)

机构地区：[1]天津科技大学理学院,天津300457 [2]天津科技大学化工与材料学院,天津300457 [3]天津大学化工学院,天津300072

出　　处：《电镀与精饰》2020年第4期23-27,共5页Plating & Finishing

摘　　要：利用3D打印技术制造的高温合金异形内孔道表面较粗糙,针对该问题研发了一种化学抛光液,并考察了化学抛光对其表面形貌、结构及耐腐蚀性能的影响。结果表明,抛光液含硫酸50 g/L、磷酸30 g/L、十二烷基硫酸钠1 g/L、NNO 5 g/L、缓蚀剂A 4 g/L,温度为50℃、抛光时间为20 min时的抛光效果最好,且能显著降低异形通道表面粗糙度。抛光前后镍、铁的特征峰未发生明显变化,说明化学抛光并未对合金表面元素分布及晶体结构产生不良影响。阳极极化曲线和交流阻抗测试显示化学抛光后合金内流道表面耐腐蚀性能明显提高。The surface of the 3D printing alloy inner channel was rough commonly,a special chemical polishing solution was prepared to solve the problem,and the effect of the polishing on the surface mor phology,structure and corrosion resistance were investigated.The results showed that under the condi tions of sulfuric acid concentration of 50 g/L,phosphoric acid 30 g/L,sodium dodecyl sulfate 1 g/L,NNO 5 g/L,corrosion inhibitor 4 g/L,temperature of 50℃and time of 20 min,the polishing could re duce the surface roughness significantly.There was no change of the diffraction peak of Ni and Fe indi cated that the chemical polishing had no bad effect on the surface element distribution and the crystal structure.In addition,the results of anodic polarization curve and electrochemical impedance spectrosco py(EIS)tests showed that the polishing improved the corrosion resistance of the alloy efficiently.

关 键 词：镍基高温合金 内通道 化学抛光 耐腐蚀性能 粗糙度 

分 类 号：TQ153.1[化学工程—电化学工业]