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Findings from Harbin Normal University Broaden Understanding of Refractory Metals and Hard Materials (Growth morphology and microstructural...

July 25, 2014



Findings from Harbin Normal University Broaden Understanding of Refractory Metals and Hard Materials (Growth morphology and microstructural characterization of nonstoichiometric Ti2AlC bulk synthesized by self-propagating high temperature ...)

By a News Reporter-Staff News Editor at Mining & Minerals -- Current study results on Refractory Metals and Hard Materials have been published. According to news reporting from Harbin, People's Republic of China, by VerticalNews journalists, research stated, "Ti2AlC bulk pellets, Phi 150 x 25 mm(2) in size, were fabricated by self-propagating high temperature combustion synthesis with pseudo hot isostatic pressing (SHS/PHIP). The growth morphology and microstructures were investigated in detail by X-ray diffraction, scanning electron microscopy, and high-resolution transmission electron microscopy."

The news correspondents obtained a quote from the research from Harbin Normal University, "The used SHS/PHIP process results in some unusual microstructures. The relative density increases to over 98% when increasing the size of the used pellet. The as-fabricated Ti2AlC has many lattice defects, contributing to its low phonon thermal conductivity. Interestingly, many nanopores were present in Ti2AlC grains. Of much importance, a high density of vacancies contributes to the nonstoichiometiy of Ti2AlC synthesized by the SHS/PHIP process."

According to the news reporters, the research concluded: "Ti2AlC synthesized by the SHS/PHIP process is deformed with high residual stress, due to fast cooling and grain growth."

For more information on this research see: Growth morphology and microstructural characterization of nonstoichiometric Ti2AlC bulk synthesized by self-propagating high temperature combustion synthesis with pseudo hot isostatic pressing. International Journal of Refractory Metals & Hard Materials, 2014;45():58-63. International Journal of Refractory Metals & Hard Materials can be contacted at: Elsevier Sci Ltd, The Boulevard, Langford Lane, Kidlington, Oxford OX5 1GB, Oxon, England. (Elsevier - www.elsevier.com; International Journal of Refractory Metals & Hard Materials - www.elsevier.com/wps/product/cws_home/405934)

Our news journalists report that additional information may be obtained by contacting Y.L. Bai, Harbin Normal Univ, Coll Chem & Chem Engn, Harbin 150025, People's Republic of China. Additional authors for this research include H.X. Zhang, X.D. He, C.C. Zhu, R.G. Wang, Y. Sun, G.Q. Chen and P. Xiao.

Keywords for this news article include: Asia, Harbin, People's Republic of China, Refractory Metals and Hard Materials

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


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Source: Mining & Minerals


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