Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1627520 | Journal of Alloys and Compounds | 2006 | 4 Pages |
Abstract
Accurate isotherms of TbNiAlHx were measured at 60, 150, 200, 250 °C with a Sieverts-type apparatus. The intermediate TbNiAlH0.33 and TbNiAlHx (0.4 < x < 0.6) hydrides were confirmed to be present at the higher temperatures. Orthorhombic TbNiAlHx (x > 0.9) was detected at all temperatures. The hydrogen content after desorption at 10 mbar and 60 °C is similar to prolonged storage at room temperature. The reaction between hexagonal TbNiAlH0.6 and orthorhombic TbNiAlH0.9 was found to have a desorption enthalpy of 50.7 kJ/(mol H2). Methodology and requirements for making accurate measurements of isotherms are discussed.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
H.W. Brinks, A. Fossdal, R.C. Jr., B.C. Hauback,