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and polymeric scaffold, the porous Mg and Mg-Zn specimens have proper mechanical properties which are closer to those of natural bone. Furthermore, the porous Mg specimens have changeable in vitro degradable..., are distinguishable within the microstructure of the porous scaffold. Some of the micropores form as a result of volume shrinkage of the Mg and Zn powders during the sintering process. Fig. 1 Optical......
Effect of porous structure on mechanical properties of C/PLA/nano-HA composites scaffold LIAO Xiao-ling(廖晓玲)1,2, XU Wen-feng(徐文峰)3, WANG Yuan-liang(王远亮)1, JIA Bi(贾 碧) 2, ZHOU Guan-yu(周冠瑜)2.../nano-HA composites were fabricated by the process of solvent blending and freeze-drying technique, and the effect of porous structure on the mechanical properties of C/PLA/nano-HA composites scaffold......
高强度Mg-Zn系合金的研究现状与发展趋势 罗承萍1,刘江文1,陈晓强1 (1.华南理工大学机械工程学院,广州,510640) 摘要:论述了国内外Mg-Zn系合金的研究和开发现状,分析了zr和稀土元素在Mg-Zn系合金中所起的作用以及对合金组织,性能及变形加工能力所产生的影响,总结了Mg-Zn-Re(-Zr)系合金中准晶相和G.P.区的形成,作用及特点.指出在Mg-Zn系合金中添加稀土元素合金化促进G.P.区的形成是研究开发高强韧性镁合金的一个重要发展方向. 关键词:变形镁合金; Mg-Zn系合金; 稀土; G.P.区; 准晶; [全文内容正在添加中] ......
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Self-healing alginate-carboxymethyl chitosan porous scaffold as an effective binder for silicon anodes in lithium-ion batteriesZhao-Hui Wu,Juan-Yu Yang,Bing Yu,Bi-Meng Shi,Chun-Rong Zhao,Zhang-Long... anodes in lithium-ion batteries.The electrostatic interaction between carboxylate(-COO-)of Alg and protonated amines(-NH3+)of C-chitosan forms a selfhealing porous scaffold structure.Synergistic effect......
Mg-Zn合金的时效处理研究进展熊庭辉1,罗岚1,刘勇2,吴进11. 南昌大学材料科学与工程学院2. 江西省近净成形重点实验室南昌大学摘 要:镁合金具有密度小,比强度及比刚度高,良好的切削加工性能及易于回收等优点.时效处理是提高镁合金的力学性能常见方法之一.本文基于析出相变理论和Mg-Zn二元相图,对Mg-Zn系二元及多元镁合金在时效处理时可能出现的组织结构变化作出预测.结合文献,探讨了时效处理时GP区的形成组分及温度条件,及其带来的材料力学性能变化,总结了铸态,变形MgZn系合金时效处理最佳工艺.关键词:Mg-Zn合金;时效处理;析出理论;GP区;......
Mg-Zn合金时效过程中GP区析出的热力学分析王晓亮1,李长荣1,郭翠萍1,杜振民1,何维1(1.北京市北京科技大学材料科学与工程学院)摘 要:利用显微硬度,XRD及TEM分析了Mg-1.9Zn(原子分数,%)二元合金时效硬化现象及GP区的形态和出现的温度范围.研究结果表明:在343和383 K时效过程中,过饱和固溶体中发生Zn原子偏聚,形成形态不同的GP区;在423 K时效,硬化峰值出现较早,没有典型GP区出现.利用本文优化获取的镁基固溶体相的热力学参数,给出镁基过饱和固溶体存在亚稳态溶解度间隙和溶质原子偏聚GP区时Gibbs自由能曲线的特征形式,确定了具有GP区析出效应的Mg-Zn体系的合金成分范围和时效温度区间.关键词:Mg-Zn合金； 低温时效； GP区； 热力学分析......
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Modifi cation of β-TCP/PLGA Scaffold and Its Effect on Bone Regeneration in vivo林柳兰1,2,GAO Haitao11. School of Mechatronics Engineering and Automation,Shanghai University2. School of Medicine,Shanghai Jiao Tong University摘 要:In order to look for the best proportion of β-tricalcium phosphate(β-TCP)and poly(lactideco-glycolide)(PLGA)we fabricated porous......
layer with porous structure, and the pore size is about 100 μm.The NGF release properties of the scaffold were investigated. The experimental results showed that, at the 1st day, 15.2 ng of NGF...Chitosan--L- Lactic Acid Scaffold for the Regeneration of Peripheral Nerve and Its NGF Release Properties徐海星Department of Pharmaceutical Engineering,School of Chemical Engineering,Wuhan University......
