CRYSTAL STRUCTURE OF SATURATED MIXED HYDRIDES OF TITANIUM AND NIOBIUM (COLUMBIUM)
The total amount of hydrogen absorbed by mixed hydrides of Nb and Ti and the room temperatare crystal structure of the hydride powders were determined. An x-ray investigation indicated that the fcc hydride phase arises from alioys extending in composition from Ti to 67 at.% Nb. After a two-phase field lying between 67 and 74 at.% Nb in which the fcc and bcc hydrides coexist, alloys richer in Nb yield a distorted bcc hydride. Over the whole range of the fcc hydride phase the hydrogen content remains constant, while in the distorted body- centered hydride phase, the hydrogen content increases with increasing Ti content reaching a hydrogen/metal ratio of 1.4 at the boundary of the two-phase region. It seems likeiy that the maximum hydrogen content is controlled entirely by factors of crystal geometry and that the solubility of hydrogen in Nb-rich alloys with either Ti or Mo is controlled by an electronic factor. (P.C.H.)
- Research Organization:
- Univ. of Birmingham, Eng.
- NSA Number:
- NSA-17-011237
- OSTI ID:
- 4711536
- Journal Information:
- Trans. AIME, Journal Name: Trans. AIME Vol. Vol: 224
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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