Materials Transactions Online

Materials Transactions, Vol.46 No.03 (2005) pp.738-741
© 2005 The Japan Institute of Metals

Alloying Effect on the Hydrogen Sensing Property of Melt-Spun Mg90Pd10 Amorphous Alloy

Sumiaki Nakano1,, Sin-ichi Yamaura2, Sakae Uchinashi1, Hisamichi Kimura2 and Akihisa Inoue2

1Research & Development Center, Home Appliances Manufacturing Division Company, Matsushita Electric Works, Ltd., Kadoma 571-8686, Japan
2Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan

We have investigated the effect of additional elements, mainly Ni, on the properties of the Mg90Pd10 amorphous alloy, which has the significant sensitivity to hydrogen dissolved in water. The results have shown that the Ni addition to the Mg90Pd10 amorphous alloy brings about complicated changes in the thermal stability, the electric property and the sensitivity to hydrogen dissolved in water. The sensitivity of the (Mg0.9Pd0.1)100-xNix amorphous alloy has a tendency to decrease with increasing the Ni content. Nevertheless, the Ni addition is more preferable as for the thermal stability of the amorphous phase and the sensitivity to hydrogen than the Cu, Al, Ti or Co addition.

(Received 2004/12/13; Accepted 2005/2/9)

Keywords: hydrogen sensor, hydrogen absorption, electrical resistance, magnesium-based amorphous alloy

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