1987
DOI: 10.1007/bf02868888
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The H−Ti (Hydrogen-Titanium) system

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Cited by 267 publications
(129 citation statements)
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“…The slight shift between the peak positions of DTG and MS is possibly caused by the time delay caused by the necessary transport of the released H 2 from the furnace to the ionisation chamber of the quadrupole mass spectrometer. Obviously DSC is the most sensitive method since the onset of hydrogen release is observed at slightly lower temperatures as compared to TG and MS. Untreated TiH 2 was found to have a fcc-based CaF 2 -structure which corresponds to the δ-phase of the Ti-H system [21]. The tetragonal ǫ-phase reported for temperatures below ≈25 • C [22] is not observed, most likely because our laboratory temperature exceeded this value.…”
Section: Discussionmentioning
confidence: 69%
“…The slight shift between the peak positions of DTG and MS is possibly caused by the time delay caused by the necessary transport of the released H 2 from the furnace to the ionisation chamber of the quadrupole mass spectrometer. Obviously DSC is the most sensitive method since the onset of hydrogen release is observed at slightly lower temperatures as compared to TG and MS. Untreated TiH 2 was found to have a fcc-based CaF 2 -structure which corresponds to the δ-phase of the Ti-H system [21]. The tetragonal ǫ-phase reported for temperatures below ≈25 • C [22] is not observed, most likely because our laboratory temperature exceeded this value.…”
Section: Discussionmentioning
confidence: 69%
“…The hydrogenation process and the equilibrium hydrogen content are a function of both the temperature and pressure of hydrogen. Figure 11 shows the equilibrium pressure of hydrogen as a function of molar content of hydrogen at different temperatures [95]. Because the equilibrium pressure of the Ti-H system increases as temperature increases, the driving force for forming hydride increases as temperature decreases, assuming the hydrogen pressure is held constant.…”
Section: Hydride-dehydridementioning
confidence: 99%
“…The yield of powder under −325 mesh (44 µm) is usually low depending on the Figure 11. The pressure-composition-temperature curves of the Ti-H system [95].…”
Section: Atomisationmentioning
confidence: 99%
“…The dehydrogenation of TiH 2 involves a number of phase transformations according to the reassessed phase diagram of Ti-H. [14] A shell of a phase was found to envelop each remaining core of titanium hydride particle. [1] This envelope of a phase not only controls the kinetics of dehydrogenation but is also expected to affect the alloying process of b-stabilizers.…”
mentioning
confidence: 99%
“…[14] Since the diffusivity of many alloying elements including V, Al, and Fe in the b phase region is known to be generally an order of (2 to 3) faster than that in the a phase region, [27] this in turn suggests that heating a TiH 2 -based powder mixture at a higher rate may enable faster densification as well as the formation of non-equilibrium phases.…”
mentioning
confidence: 99%