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Proceedings of the 7th National Conference on Functional Materials and Applications (FMA 2010 E-BOOK)

Changsha,China,10.16-10.18,2010

ISBN: 978-1-935068-41-9 Scientific Research Publishing, USA

E-Book 2313pp Pub. Date: October 2010

Category: Chemistry & Materials Science

Price: $360

Title: Design and Fabrication of W-Mg Graded Density Impactor
Source: Proceedings of the 7th National Conference on Functional Materials and Applications (FMA 2010 E-BOOK) (pp 168-171)
Author(s): A-ting Gao, Key Laboratory of Advanced Technologies of Materials, Ministry of Education, Southwest Jiaotong University, Chengdu, China
De-gui Zhu, Key Laboratory of Advanced Technologies of Materials, Ministry of Education, Southwest Jiaotong University, Chengdu, China
Abstract: In order to simulate the influence of high-speed movement space debris on the spacecraft, a graded density impactor is needed to collide with the secondary flier-plate, so that its speed can approach that space debris. In this paper，a methodology is described for fabrication of W-Mg functionally graded materials with density gradient，using metal W and Mg powder as row materials, according to the designed ratio of mixed powder, mixture powders were layered into mold and uniaxially pressed together, finally, sintered under hot isostatic pressing . The impactor’s Surface morphology from the magnesium-rich side to the tungsten-rich side can be observed by SEM, the results show that regular shaped tungsten particles were bonded together by magnesium, through energy spectrum analysis can be seen that W-Mg content showed gradient trend along the thickness direction.
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