一种生物可降解LiZn₄-Zn复相材料及其制备方法。通过真空熔炼、热处理、塑性变形工艺对材料显微组织进行调控获得，材料中不同相的质量百分比 是 ：金属间化合物LiZn₄为15 .5～95wt％，Zn相为余量。本发明材料纯度高、成分均匀性好，LiZn4相为力学增强相，相同电解质中电位低于Zn且可降解，所含的Zn和Li元素为生物安全元素 ，降 解 后对人体无毒 。该生物可降 解LiZn₄-Zn复相材料显微组织结构由一级或双级片层组织组成，相邻片层间距约为0.04～5μm。所获得的屈服强度200～500MPa，抗拉强度为300～600MPa、延伸率为30～120％。在模拟体液中降解均匀，降解速率低于20μm/y，对L929成骨纤维细胞和MG63细胞毒性低于2级，满足多种人体植入器件材料的力学使用要求。该复相材料及其加工方法在医用材料领域具有极高的推广价值和广泛的应用前景

The invention relates to a biodegradable LiZn₄-Zn complex phase material and its preparation. The preparation method. Through vacuum melting, heat treatment, plastic deformation process . The microstructure of the material is adjusted to obtain the quality of different phases in the material. The amount percentage is:intermetallic compound LiZn₄ is 15.5 ~95wt %, Zn phase is residual. The invention has high material purity and uniform composition. The homogeneity is good, and the LiZn₄ phase is the mechanical strengthening phase, and the same electrolyte is electrically charged. The Zn and Li elements are bioamphetamine. All elements, non-toxic to human body after decomposed. The organism is degradable The microstructure of LiZn₄-Zn multiphase material is composed of one or two stages.The space between adjacent lamellae is about 0.04 ~ 5μm. The yield strength and tensile strength are obtained from 200 ~ 500MPa, 300~600MPa,elongation of 30 ~ 120%. In the simulation of bodily fluids,the degradation rate was lower than 20μm/y, and the bone formation of L929 was observed

The cytotoxicity of fibroblasts and MG63 was lower than grade 2, which satisfied a variety of people. Mechanical requirements for use of materials for body implant devices. The multiphase material and its processing method has a very high promotion price in the field of medical materials value and a wide range of application prospects.