Novel three-dimensional (3D) hierarchical macro- to nano-porous titanium (Ti) and TiMo alloys with sufficient compressive strength (CS) were prepared using NaCl spacer and dealloying methods. The dealloying process was implemented by the heat treatment of TiCu and TiMoCu master alloys in Mg powders. The 3D-hierarchical porous structures were composed of large pores having a mean size of 400 μm with interconnected micro-pores in the size of 10–30 μm, where the pore walls possessed numerous nano-pores with a size range of 10–50 nm. The CS and elastic modulus values were 72.4 MPa and 2.67 GPa as well as 92.62 MPa and 3.36 GPa for Ti and TiMo, respectively. The hierarchical porous structure is beneficial for the fast nucleation of bone-like apatite after immersion in simulated body fluid (SBF). In addition, TiMo samples after NaOH and heat treatments provide better apatite formation after soaking in SBF for a week, in comparison with the samples without treatment.

使用NaCl隔离层和脱合金方法制备了具有足够抗压强度（CS）的新型三维（3D）分层大孔至纳米多孔钛（Ti）和TiMo合金。脱合金工艺是通过对Mg粉中的TiCu和TiMoCu中间合金进行热处理而实现的。3D层级多孔结构由平均大小为400μm的大孔和相互连接的微孔（大小为10–30μm）组成，其中孔壁具有许多纳米孔，大小范围为10–50 nm 。CS和弹性模量值为Ti和TiMo分别为72.4 MPa和2.67 GPa以及92.62 MPa和3.36 GPa。分层的多孔结构有利于浸入模拟体液（SBF）后使骨状磷灰石快速成核。此外，