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Customizing the Pore Structure and Properties of Freeze‐Cast Porous Titanium by Zirconium Acetate Additive
Advanced Engineering Materials ( IF 3.4 ) Pub Date : 2020-07-02 , DOI: 10.1002/adem.202000519 Chuan Zong Wu 1 , Zhu Yin Chen 1 , Xinli Liu 2 , Ting Shen 1 , LiGuo Zu 1 , Lei Zhang 1
Advanced Engineering Materials ( IF 3.4 ) Pub Date : 2020-07-02 , DOI: 10.1002/adem.202000519 Chuan Zong Wu 1 , Zhu Yin Chen 1 , Xinli Liu 2 , Ting Shen 1 , LiGuo Zu 1 , Lei Zhang 1
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Porous titanium scaffolds with high porosity and connected macropores are fabricated by adding zirconium acetate to control the ice crystal growth during freeze casting. The influences of zirconium acetate additives on the phase composition, pore structure, and mechanical properties of porous titanium are studied. As modified by zirconium acetate, the X‐ray diffraction peaks of titanium moves to a smaller angle, and the zirconium is evenly distributed on the titanium matrix. With the increase in the concentration of zirconium from 0 to 60 g L−1, the pore morphology of porous titanium changes from typical lamellar to the honeycomb, the pore size distribution becomes wider. The average pore size and porosity increases from 44 ± 11 to 126 ± 35 μm and from 46.4 ± 1.3 to 59.1 ± 1.3%, respectively. As the concentration of zirconium acetate is 40 g L−1, the porosity and the pore size of the porous titanium scaffolds are comparable with those modified by 10 g L−1 zirconium acetate, but the compressive strength is 2.3 times higher. Zirconium acetate as an additive has an excellent performance in optimizing the pore structure and mechanical properties of water‐based freeze‐cast porous titanium.
中文翻译：
用醋酸锆添加剂定制冻铸多孔钛的孔结构和性能
通过添加醋酸锆来控制冰晶在冷冻浇铸过程中的生长，可以制造出具有高孔隙率和相连大孔的多孔钛支架。研究了醋酸锆添加剂对多孔钛的相组成，孔结构和力学性能的影响。经醋酸锆改性后，钛的X射线衍射峰移动到较小的角度，并且锆均匀地分布在钛基体上。随着锆浓度从0增加到60 g L -1，多孔钛的孔隙形态从典型的层状变为蜂窝状，孔径分布变宽。平均孔径和孔隙率分别从44±11％增加到126±35μm和从46.4±1.3％增加到59.1±1.3％。当乙酸锆的浓度为40g L -1时，多孔钛支架的孔隙率和孔尺寸与用10g L -1乙酸锆改性的多孔钛支架相当，但抗压强度高2.3倍。醋酸锆作为添加剂在优化水基冷冻铸造多孔钛的孔结构和力学性能方面具有出色的性能。
更新日期：2020-07-02
中文翻译：
用醋酸锆添加剂定制冻铸多孔钛的孔结构和性能
通过添加醋酸锆来控制冰晶在冷冻浇铸过程中的生长，可以制造出具有高孔隙率和相连大孔的多孔钛支架。研究了醋酸锆添加剂对多孔钛的相组成，孔结构和力学性能的影响。经醋酸锆改性后，钛的X射线衍射峰移动到较小的角度，并且锆均匀地分布在钛基体上。随着锆浓度从0增加到60 g L -1，多孔钛的孔隙形态从典型的层状变为蜂窝状，孔径分布变宽。平均孔径和孔隙率分别从44±11％增加到126±35μm和从46.4±1.3％增加到59.1±1.3％。当乙酸锆的浓度为40g L -1时，多孔钛支架的孔隙率和孔尺寸与用10g L -1乙酸锆改性的多孔钛支架相当，但抗压强度高2.3倍。醋酸锆作为添加剂在优化水基冷冻铸造多孔钛的孔结构和力学性能方面具有出色的性能。
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