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针对开孔泡沫铜工艺流程复杂、制备成本高等缺点,将成型针织技术与二步浸渗有机材料方法结合,得到工艺简单且具有开孔结构的高孔隙率(>80%)泡沫铜.根据有机材料浸渗法的工艺特点,讨论金属浆料性能和烧结工艺确定的影响因素,检测并分析泡沫铜孔隙形貌和压缩性能,对一次浸渗和二次浸渗两种工艺流程制备得到的泡沫铜结构性能进行对比.结果表明,金属浆料的pH值对浆料的流变特性有很大的影响,并且在pH为9.6时金属浆料的流动性最大;二次浸渗工艺在不改变孔隙率的情况下,泡沫铜的压缩应力平台从0.5 MPa提高到1 MPa.
Aiming at the shortcomings of complicated process and high preparation cost of open-cell foamed copper, high-porosity (> 80%) foamed copper with simple process and open-cell structure was obtained by a combination of forming knitting technology and two- Material infiltration process characteristics discussed metal paste performance and sintering process to determine the influencing factors, detection and analysis of foam copper pore morphology and compression properties of the two infiltration and secondary infiltration of two processes prepared foam Copper structure.The results show that the pH value of the metal slurry has a great influence on the rheological properties of the slurry and the maximum flowability of the metal slurry at the pH of 9.6.The second impregnation process does not change In the case of porosity, the compressive stress of the foam copper increases from 0.5 MPa to 1 MPa.