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impurities. Key words: biodegradable material; magnesium; rare earths; Mg-RE alloy; structure; corrosion 1 Introduction Magnesium alloys exhibit high specific strength, good biocompatibility...Trans. Nonferrous Met. Soc. China 23(2013) 1215-1225 Structural and corrosion characterization of biodegradable Mg-RE (RE=Gd, Y, Nd) alloys J. , D. Department of Metals and Corrosion Engineering......
AZ91D. Key words: AZ91D Mg alloy; Mg-RE alloy; corrosion behavior; cyclic polarization  ...文章编号:1004-0609(2009)10-1713-07 Mg-Al系和Mg-RE系合金在NaCl溶液中的 腐蚀电化学行为 丁文江1, 2,向亚贞3,常建卫1, 4,彭颖红4 (1. 上海交通大学 材料科学与工程学院 轻合金精密成型国家工程研究中心,上海 200240; 2. 上海交通大学 材料科学与工程学院 金属基复合材料国家重点实验室,上海 200240; 3......
is increased by addition of 3% B2O3, however, the hardness of Mg-6RE alloy is decreased by B2O3 addition. Addition of B2O3 into Mg-Al, Mg-RE and Mg-Al-Ti alloys makes the fine grain structures, the hardness of Mg-RE alloy is decreased. This strange behavior may be interpreted with existence of many fine pores in the alloy. The mechanical properties of composite Mg-9Al-6Ti with 3%B2O3 are higher than......
nucleation (PSN) is also observed in the present alloy. Key words: Mg-RE alloy; hot compression; twin; dynamic recrystallization mechanism 1 Introduction Magnesium (Mg) alloys show great potential... and texture of a cast Mg-RE alloy under uniaxial hot compression [J]. Materials Science and Engineering A, 2011, 528(24): 7178-7185. [9] MA Q, LI B, MARIN E B, HORSTEMEYER S J. Twinning-induced dynamic......
Mg-RE合金LPSO结构的析出与控制研究进展徐春杰,田军,陈利萍,马毅旋,张忠明西安理工大学材料科学与工程学院摘 要:在Mg-RE合金中添加微量合金元素,并通过一定的工艺控制可以获得层片状的长周期堆垛(LPSO)结构,使合金的综合力学性能得到大幅度提高.LPSO结构增强镁合金已成为高强韧镁合金研究的热点.结合不同Mg-RE合金综述不同LPSO结构的类型,特点,形成条件,形成机制和控制方法以及对力学性能的影响,提出Mg-RE系合金中LPSO结构研究需要解决的主要问题和LPSO结构增强镁合金的发展方向.关键词:Mg-RE合金;LPSO结构;力学性能;形成机制;制备工艺;......
铸造Mg-RE合金的显微结构及其蠕变行为 徐永波1,韩恩厚1,沙桂英1 (1.中科院金属研究所沈阳材料科学国家(联合) 摘要:研究了铸造Mg-RE合金的高温蠕变特性,通过SEM和TEM观察,讨论与分析了该合金的蠕变机制.结果表明:在473K,应力低于100 MPa条件下,该合金具有良好的蠕变抗力,其稳态蠕变速率低于2.66×10-6s-1;富含Ce,La,Nd等稀土元素的共晶β相和蠕变期间动态沉淀产生的晶界强化及沉淀强化是该合金的主要强化机制,而孪晶切变和共晶β相开裂致使其高温蠕变抗力显著降低. 关键词:Mg-RE合金; 蠕变; 动态沉淀; 孪晶切变; [全文内容正在添加中] ......
that the Mg-RE coating improved the corrosion resistance of the AZ91D magnesium alloy, and the corrosion current density of the coated sample was about 1510 mA /cm2 lower than the uncoated sample.关键词:...Fabrication of a novel Mg-RE(Nd,Ce) intermetallic compound coating by molten salt diffusion and its effect on corrosion resistance of magnesium alloys韩宝军1,2,古东懂2,何琼2,张小联1,2,彭光怀1,2,杨初斌1,21. Jiangxi......
that the Mg-RE coating improved the corrosion resistance of the AZ91D magnesium alloy, and the corrosion current density of the coated sample was about 1510 mA /cm2 lower than the uncoated sample.关键词:...Fabrication of a novel Mg-RE(Nd,Ce) intermetallic compound coating by molten salt diffusion and its effect on corrosion resistance of magnesium alloys韩宝军1,2,古东懂2,何琼2,张小联1,2,彭光怀1,2,杨初斌1,21. Jiangxi......
医用Mg-RE合金血管内支架的研究进展 彭建1,高家诚1,乔丽英1,王强1,李伟1 (1.重庆大学材料科学与工程学院,重庆,400044) 摘要:血管内金属支架是植入人体血管管道狭窄处起支撑作用的医疗器械,其生物相容性十分重要.分析了稀土镁合金作为生物材料的优势和潜力,对Mg-RE合金的腐蚀性,生物相容性及生物可降解性能进行了综合评述;并以冠状动脉支架为应用背景,着重分析了影响血管内支架血液相容性的因素,提出了对支架进行表面改性处理以提高其血液相容性的技术路线. 关键词:稀土镁合金; 血管内支架; 生物相容性; 生物可降解性; 表面改性; [全文内容正在添加中] ......
ICP-OES法测定Mg-RE合金系中Gd,Y,Zr,Ag邹龙,刘荣丽湖南稀土金属材料研究院摘 要:采用ICP-OES法测定了Mg-RE合金系中Gd,Y,Zr,Ag,进行了酸度试验,干扰试验和加标回收及精密度试验确定最佳测定条件.方法简便可靠,满足当前科研生产的需要.关键词:ICP-OES;稀土镁合金;Gd;Y;Zr;Ag;......