Abstract Porous Ti4Al4Co (wt%) alloy of different porosities were prepared through space holder technique. Effect of porosity on pore morphology, compressive deformation and corrosion behaviour of the foams were investigated. The prepared foams were characterized by XRD, FESEM and EDS to investigate the phase formation, pore morphology and elemental distribution. Compression test was performed to study the compressive deformation behaviour of the foams. Electrochemical and weight loss methods were used to investigate the corrosion behavior. From compression test, it was analyzed that plastic collapse stress, elastic modulus and energy absorption capacity reduce with the increment of porosity and follow the power law relationship. While, the densification strain increases linearly with porosity. On the other hand, increase in porosity imparts an adverse effect on the corrosion resistance of the material. The corrosion rate was found to be more susceptible to the foam samples having higher porosity. Microstructure of the corroded surface was in well accordance with the corrosion behaviour observed from the electrochemical method.

中文翻译：

---

中至高度多孔 Ti4Al4Co (wt%) 合金泡沫的压缩变形和腐蚀行为

摘要 通过空间支架技术制备了不同孔隙率的多孔Ti4Al4Co (wt%)合金。研究了孔隙率对泡沫孔隙形态、压缩变形和腐蚀行为的影响。通过XRD、FESEM和EDS对制备的泡沫进行表征，以研究相形成、孔隙形态和元素分布。进行压缩试验以研究泡沫的压缩变形行为。电化学和失重方法用于研究腐蚀行为。从压缩试验分析，塑性坍塌应力、弹性模量和吸能能力随着孔隙率的增加而降低，并遵循幂律关系。同时，致密化应变随孔隙率线性增加。另一方面，孔隙率的增加会对材料的耐腐蚀性产生不利影响。发现腐蚀速率对具有较高孔隙率的泡沫样品更敏感。腐蚀表面的微观结构与电化学方法观察到的腐蚀行为完全一致。