Preparation and properties of high purity Mg-Y biomaterials

被引：164

作者：

Peng, Qiuming ^{[1
]}

Huang, Yuanding ^{[1
]}

Zhou, Le ^{[1
]}

Hort, Norbert ^{[1
]}

Kainer, Karl Ulrich ^{[1
]}

机构：

[1] GKSS Forschungszentrum Geesthacht GmbH, MagIC, D-21502 Geesthacht, Germany

来源：

BIOMATERIALS | 2010年 / 31卷 / 03期

关键词：

Zone solidification; Biomaterials; Purifying; Mg-Y alloy; Properties; IN-VIVO CORROSION; MAGNESIUM ALLOYS; BONE; MECHANISMS;

D O I：

10.1016/j.biomaterials.2009.09.065

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

An effective zone solidification method has been found to prepare high purity Mg-Y biomaterials. The corrosion and mechanical properties of the purified middle region are improved remarkably compared with common casting method. The average gain size and secondary dendrite space decrease from the top layer to the bottom layer of the ingot. The oxides, defects and precipitates are mainly enriched in the top layer of the ingot under the impulsion of high thermal gradient. These results are in agreement with that simulated by finite elemental method using FLOW-3D software. It is confirmed that the mode of scallop symmetric solidification attributes to the purifying process. This zone solidification method not only contributes to high purity Mg-based biomaterials, but also provides a new approach to prepare high performance Mg alloys. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：398 / 403

页数：6

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