Zn-0.8Cu微管的基本相构成是Zn（Cu）固溶体基底和具有HCP晶格结构的ε（CuZn₅）第二相。图4-9中可见，CuZn₅相的特征峰强度较弱，说明CuZn₅相的含量较低。相近成分合金（Zn-1wt.%Cu）的研究结果也有类似报道。将微管加工成支架的后续过程中，锌合金不再经历热加工，因此Zn-Cu支架的基本相构成也为Zn（Cu）固溶体+少量ε（CuZn₅）第二相。

The basic phase composition of Zn-0.8Cu microtubes is a Zn (Cu) solid solution substrate and a second phase of ε (CuZn₅) with a HCP lattice structure. It can be seen in Figure 4-9 that the characteristic peak intensity of CuZn₅ phase is weak, indicating that the content of CuZn₅ phase is low. The research results of similar composition alloys (Zn-1wt.%Cu) have also been reported similarly. In the subsequent process of processing the microtubes into the stent, the zinc alloy no longer undergoes thermal processing, so the basic phase composition of the Zn-Cu stent is also Zn (Cu) solid solution + a small amount of ε (CuZn₅) second phase.