|
| 生物可降解梯度多孔Fe-3Ag/HA复合材料的制备与性能研究 |
| Study on preparation and properties of biodegradable gradient porous Fe-3Ag/HA composites |
| Received:April 26, 2022 |
| DOI： |
| 中文关键词: 生物医用 铁基合金 羟基磷灰石 孔隙特性 力学性能 耐腐蚀性能 |
| 英文关键词: biomedical degradable Fe-base alloy hydroxyapatite porosity mechanical properties corrosion resistance |
| 基金项目:国家自然科学基金资助项目(51805236)；辽宁省教育厅基础研究项目(JJL201915407) |
| Author Name | Affiliation | | PANG Wenlu | College of Materials Science & Engineering, Liaoning University of Technology, Jinzhou 121001, Liaoning, China | | YU Jingyuan | College of Materials Science & Engineering, Liaoning University of Technology, Jinzhou 121001, Liaoning, China | | GENG Fang | Medtronic Shanghai Co.Ltd., Shanghai 310000, China |
|
| Hits: 618 |
| Download times: 276 |
| 中文摘要: |
| 采用粉末冶金技术制备梯度多孔Fe-3Ag/HA复合材料，研究了造孔剂分布、烧结温度、HA含量对梯度多孔Fe-3Ag/HA复合材料的孔隙度和力学性能的影响。观察了梯度多孔Fe-3Ag/HA复合材料的显微组织及腐蚀后的微观形貌，测量了梯度多孔Fe-3Ag/HA复合材料的物相组成和耐腐蚀性能。结果表明，随着造孔剂和HA含量增加，烧结产物的孔隙度增加，抗压强度减少。提高造孔剂含量，梯度多孔Fe-3Ag/HA复合材料的耐腐蚀性能明显降低；提高HA含量，该复合物的耐腐蚀性能比梯度多孔Fe-3Ag略有增加，但是其腐蚀速率明显高于梯度多孔纯Fe试样。在模拟人工体液中浸泡3天后，梯度多孔Fe-3Ag/HA复合材料比梯度多孔Fe-3Ag合金表面沉积了更多的HA，这表明HA相有诱导模拟人工体液中Ca和P离子沉积的能力，与Fe基合金相比该复合材料具有更好的生物相容性。 |
| 英文摘要: |
| Gradient porous Fe-3Ag/HA composites were prepared by powder metallurgy technology. The effects of the distribution of pore-forming agent, sintered temperature and HA content on porosity and mechanical properties were investigated. For the composites, the microstructure and micro-morphology after corrosion, phase composition and corrosion resistance were measured. The results show that the porosity of sintered products increases and the compressive strength decreases, with the increase of pore-forming agent and HA content. The corrosion resistance of graded porous Fe-3Ag/HA composite obviously decreases with the increase of pore-forming agent content. With the increase of HA content, the corrosion resistance of the composite is slightly higher than that of gradient porous Fe-3Ag, but its corrosion rate is obviously higher than that of gradient porous pure Fe sample. Compared with the gradient porous Fe-3Ag alloy, more HA was deposited on the surface of the gradient porous Fe-3Ag/HA composite after soaked for 3 days in the simulated artificial body fluid, which indicates that the HA phase in the composite has the ability to induce Ca and P ion deposition in the biological system. The gradient porous Fe-3Ag/HA composites have better biocompatibility than Fe-based alloys. |
|
View Full Text
View/Add Comment Download reader |
| Close |