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| 磁兼容Au-25Pt合金的组织结构及综合性能 |
| Microstructure and comprehensive properties of MR-compatible Au-Pt alloy |
| Received:August 25, 2021 |
| DOI： |
| 中文关键词: 金属材料 Au-Pt合金 冷变形 相结构 磁化率 硬度 |
| 英文关键词: metal materials Au-Pt alloy cold deformation phase structure magnetic susceptibility microhardness |
| 基金项目:国家自然科学基金联合基金(U20A2077)；云南省基础研究计划青年基金(202101AU070123)；云南省重大科技专项(202002AB080001-1) |
| Author Name | Affiliation | | FU Quan | Kunming Institute of Precious Metals, State Key Laboratory of Advance Technologies for Comprehensive Utilization of Platinum Metals, Sino-Platinum Metals Co.Ltd., Kunming 650106, China | | MA Li-hua | Kunming Institute of Precious Metals, State Key Laboratory of Advance Technologies for Comprehensive Utilization of Platinum Metals, Sino-Platinum Metals Co.Ltd., Kunming 650106, China | | LIU Yi | Kunming Institute of Precious Metals, State Key Laboratory of Advance Technologies for Comprehensive Utilization of Platinum Metals, Sino-Platinum Metals Co.Ltd., Kunming 650106, China | | WANG Shun | Key Laboratory of Fundamental Physical Quantities Measurement, School of Physics, Huazhong University Science and Technology, Wuhan 430074, China | | ZHANG Jian-kang | Kunming Institute of Precious Metals, State Key Laboratory of Advance Technologies for Comprehensive Utilization of Platinum Metals, Sino-Platinum Metals Co.Ltd., Kunming 650106, China | | NIU Hai-dong | Kunming Institute of Precious Metals, State Key Laboratory of Advance Technologies for Comprehensive Utilization of Platinum Metals, Sino-Platinum Metals Co.Ltd., Kunming 650106, China | | WU Hai-jun | Kunming Institute of Precious Metals, State Key Laboratory of Advance Technologies for Comprehensive Utilization of Platinum Metals, Sino-Platinum Metals Co.Ltd., Kunming 650106, China | | CHEN Deng-quan | Kunming Institute of Precious Metals, State Key Laboratory of Advance Technologies for Comprehensive Utilization of Platinum Metals, Sino-Platinum Metals Co.Ltd., Kunming 650106, China |
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| 中文摘要: |
| Au-Pt合金具有优异的MRI磁兼容性、良好的生物兼容性、高的耐蚀性等优点，在医用材料领域具有巨大的应用前景。采用X射线衍射仪、金相显微镜、维氏显微硬度仪和综合物性测量系统等，研究冷加工过程Au-25Pt合金丝材的组织结构演变及其对体积磁化率和维氏硬度的影响，为制备综合性能优异的Au-Pt合金探索有效途径。结果表明，固溶处理后的Au-25Pt合金为面心立方结构的单相固溶体，经30%~70%冷变形后，没有其它相产生。冷加工变形显著增加了Au-25Pt合金的维氏硬度，尤其在冷加工初期(<30%变形量)，但对磁化率影响很小。冷变形Au-25Pt合金不仅具有接近人体组织的体积磁化率(?8.5×10?6)，还有较高的维氏硬度(HV0.1=160)。 |
| 英文摘要: |
| Au-Pt alloy has great application prospects in the field of biomedical materials due to its advantages of excellent MR-compatibility, good biocompatibility and high corrosion resistance, etc. Its microstructure evolution and its effect on bulk magnetic susceptibility and hardness of Au-25Pt alloy wire during cold deformation were studied by X-ray diffraction (XRD), metallographic microscope, Vickers microhardness tester and comprehensive physical properties measurement system, and effective ways to prepare Au-Pt alloy with excellent comprehensive properties were explored. The results show that the Au-25Pt alloy is a single-phase solid solution with a face centered cubic structure after solution treatment, and that no other phase forms during 30%~70% cold deformation. Cold deformation significantly increases the Vickers hardness of Au-25Pt alloy, especially at the initial stage of cold deformation (<30%), but has little effect on the magnetic susceptibility. The cold-deformed Au-25Pt alloy not only has a volume magnetic susceptibility of ?8.5×10?6 which is close to that of human tissue, but also has a higher Vickers hardness (HV0.1=160). |
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