| Autor: |
LEI Deshan, XIAO Xiaohua, FANG Ziyi, DENG Rui, LIU Qianli, HUANG Bensheng |
| Jazyk: |
čínština |
| Rok vydání: |
2023 |
| Předmět: |
|
| Zdroj: |
Cailiao Baohu, Vol 56, Iss 4, Pp 81-87 (2023) |
| Druh dokumentu: |
article |
| ISSN: |
1001-1560 |
| DOI: |
10.16577/j.issn.1001-1560.2023.0087 |
| Popis: |
Mg-based porous materials have broad application prospect in biomedical field.In order to improve the corrosion resistance of porous Mg-Al alloy in human body fluid，porous Mg-Al alloy was prepared by powder metallurgy，and Y2O3 with different contents (0，0.2%，0.4%，0.6%) was added to modify the Mg-Al alloy.The effects of Y2 O3 content on the porosity，pore morphology，microstructure，compressive strength and corrosion resistance of porous Mg-Al alloy in Hank's biomimetic solution were investigated by means of metallographic microscope，XRD，SEM，universal testing machine and electrochemical workstation.Results showed that the porosity of porous Mg-Al alloy prepared by powder metallurgy was about 39%，and the powder metallurgy method could accurately control the pore morphology and size of porous Mg-Al alloy.Moreover，porous Mg-Al alloy was mainly composed of Mg and the second phase Al12Mg17.The addition of Y2O3 could refine the grains of porous Mg-Al alloy，homogenize the grain size，distribute the second phase more evenly，and improve the compressive strength of porous Mg-Al alloy and its corrosion resistance in Hank's bionic solution.When the content of Y2O3 was 0.4%，the compressive strength of porous Mg-Al alloy was 46.4 MPa，and the corrosion rate in Hank's biomimetic solution was 0.887 44 mm/a. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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