Back to results
US 6,471,795 B2Granted
Method of producing hydrogen storage alloys
AssigneeThe Japan Steel Works, Ltd.
InventorsKazuya Kubo, Toshiki Kabutomori, Hideaki Itoh
Life of this patent
Estimating the term…
Abstract
A hydrogen storage alloy of TiaMnbVcZrd (one of two kinds or more of Fe, Co, Cu, Zn, Ca, Al, Mo and Ni)x (herein, a is 10 to 40 atomic %, b is 40 to 60 atomic %, c is 5 to 30 atomic %, d is 15 atomic % or less, and x is 0 to 10 atomic %) is obtained by the rapid solidification (solidification at the cooling rate of desirably 103° C./sec or higher).
Claims12
A method of producing hydrogen storage alloy expressed with a formula of TiaMnbVcZrdAeBfCgNih, and having a crystal structure comprising a hexagonal close-packed structure, comprising the steps of:
- rapidly solidifying a molten raw material for obtaining the hydrogen storage alloy, wherein a cooling rate for rapid solidification is greater than 102° C./sec,
- wherein a is 10 to 40 atomic %, b is 40 to 60 atomic %, c is 5 to 30 atomic %, d is 15 atomic % or less, e, f, g, and h are such that e+f+g+h are 0 to 10 atomic %,
- A:
- one or two kinds of Fe and Co
- B:
- one or two kinds or more of Cu, Zn and Ca, and
- C:
- one or two kinds of Al and Mo.
5 more elements
Dependencies are inferred from the claim text.