HYDROGEN STORAGE PROPERTIES AND CRYSTAL STRUCTURE OF Ti-Cr BASED ALLOYS

Acta Metall Sin

2006, Vol. 42

Issue (6): 641-646 DOI:

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HYDROGEN STORAGE PROPERTIES AND CRYSTAL STRUCTURE OF Ti-Cr BASED ALLOYS

WANG Yang;ZHANG Yan; WANG Xinhua; CHEN Changpin

浙江理工大学理学院

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WANG Yang; ZHANG Yan; WANG Xinhua; CHEN Changpin. HYDROGEN STORAGE PROPERTIES AND CRYSTAL STRUCTURE OF Ti-Cr BASED ALLOYS. Acta Metall Sin, 2006, 42(6): 641-646 .

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Abstract The hydrogen storage properties and crystal structures of Ti 1+x Cr 1.2 Mn 0.8 (x=0.0, 0.1, 0.2, 0.3) and Ti 1+x Cr 1.2 Mn 0.8-y M y (M=Fe, Ni, Cu, V, VFe; x=0.0, 0.1; y=0.1, 0.3) have been studied systematically. XRD patterns proved that the two series of hydrogen storage alloys have the same crystal structure, C14(MgZn 2) typed Laves phase, which is suitable for hydrogen absorption and desorption with great amount. The lattice parameter a, c and cell volume V increase with increasing Ti content and substitution of Mn by Fe, Ni, Cu, V and VFe, while the hysteresis factors of P-C-T curves decrease. In order to develop hydrogen storage alloys for the metal hydride hydrogen compressor (MHHC), the effect of the substitution elements have been investigated, and the results show that both alloys, TiCr 1.2 Mn 0.5 Fe 0.3 and Ti 1.1 Cr 1.2 Mn 0.5 Cu 0.3 , have high hydrogen storage capacities and high compression ratios.

Key words: Ti-Cr base hydrogen storage alloy hydrogen storage property crystal structure

Received: 29 September 2005

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TG139.7

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	WANG Xinhua
	CHEN Changpin

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https://www.ams.org.cn/EN/ OR https://www.ams.org.cn/EN/Y2006/V42/I6/641

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