Effect of Pore Forming Agent on Microstructures and Properties of Porous Molybdenum

Article Preview

Abstract:

The porous molybdenum was prepared by addition of pore forming agent and powder metallurgy method. The results show that the species and amount of pore forming agent are the primary influencing factors for the microstructures and properties of porous molybdenum. The pore shapes in porous molybdenum are regular and uniformly distributed. The porosity of porous molybdenum would be the largest and the transmission rate would be the best when sodium chloride was selected as pore forming agent. The compressive fracture strength of porous molybdenum would be more than 30MPa when the ammonium hydrogen carbonate was selected as pore formimg agent and its addition was 70 % (volume fraction). But the porosity would be the lowest.

You might also be interested in these eBooks

Info:

Periodical:

Pages:

157-160

Citation:

Online since:

July 2013

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2013 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

[1] G. J. Davis, Shu Zhen, Review metallic foams: their production, properties and applications, J. Meter. Sci., 18(1983) 1899-1911.

Google Scholar

[2] Wei Liu, Nathan Canfield, Development of thin porous metal sheet as micro-filtration membrane and inorganic membran, J. Memb. Sci., 409–410 (2012) 113-126.

DOI: 10.1016/j.memsci.2012.03.041

Google Scholar

[3] M. B.Rockel, The effect of porosity on the microstructure damping response 6061 aluminium alloy, J. Mater. Sci., 28 (1993), 1515-1524

Google Scholar

[4] P. De Jaeger, C. T'Joen, H. Huisseune, B. Ameel, S. De Schampheleire, M. De Paepe, Assessing the influence of four cutting methods on the thermal contact resistance of open-cell aluminum foam, Inter. J. Heat & Mass Trans., 55 (2012) 6142-6151

DOI: 10.1016/j.ijheatmasstransfer.2012.06.033

Google Scholar

[5] Dirk Schwingel, Hans-Wolfgang Seeliger, Claude Vecchionacci, Detlef Alwes, Jürgen Dittrich, Alunminum foam sandwich structures for space applicaion, Acta Astronautica, 61 (2007) 326-330

DOI: 10.1016/j.actaastro.2007.01.022

Google Scholar

[6] Fang Yan: Master degree thesis, Xi'an University of Technology, 2010(in Chinese)

Google Scholar

[7] He Qing, Yan Zutong. Temperature dependence of volume thermal expansion coefficient, bulk modulus and interatomic separation for ionic solids, J. Anhui Normal Uni. ( Natural Science), 24(2001) 82-87

Google Scholar

[8] Fang Zhenghua, Temperature dependence of volume thermal expansion for NaCl and KCl crystals, Physica B 357 (2005) 433–438

DOI: 10.1016/j.physb.2004.12.010

Google Scholar