Structure and property evaluation of a vacuum plasma sprayed nanostructured tungsten-hafnium carbide bulk composite

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING

卷:477

Article

Rea, K. E.^1,2  Viswanathan, V.^1,2  Kruize, A.^1,2  De Hosson, J. Th. M.³  O'Dell, S.⁴  McKechnie, T.⁴  Rajagopalan, S.¹  Vaidyanathan, R.¹  Seal, S.^1,2 

[1] Univ Cent Florida, AMPAC, MMAE, Nanosci & Technol Ctr, Orlando, FL 32816 USA

[2] Univ Cent Florida, SNF, Orlando, FL 32816 USA

[3] Univ Groningen, Dept Appl Phys, NL-9747 AG Groningen, Netherlands

[4] Plasma Process Inc, Huntsville, AL 35811 USA

关键词: powder processing;    nanoindentation;    transmission electron microscopy;    carbides;    nanocomposites;   

DOI  :  10.1016/j.msea.2007.05.063

来源: Elsevier

【 摘 要 】

Vacuum plasma spray (VPS) forming of tungsten-based metal matrix nanocomposites (MMCs) has shown to be a cost effective and time saving method for the formation of bulk monolithic nanostructured then no-mechanical components. Spray drying of powder feedstock appears to have a significant effect on the improved mechanical properties of the bulk nanocomposite. The reported elastic modulus of the nanocomposite nearly doubles due to the presence of HfC nano particulates in the W matrix. High resolution transmission electron microscopy (HRTEM) revealed the retention of nanostructures at the select process conditions and is correlated with the enhanced mechanical properties of the nanocomposite. Published by Elsevier B.V.

【 授权许可】

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