TY - JOUR
T1 - Ti-V-Cr b.c.c. alloys with high protium content
AU - Okada, M.
AU - Kuriiwa, T.
AU - Tamura, T.
AU - Takamura, H.
AU - Kamegawa, A.
N1 - Funding Information:
This work has been supported in part by a Grant-in-Aid for Scientific Research on Priority Area A of ‘New Protium Function’ from the Ministry of Education, Science, Sports and Culture.
PY - 2002/1/17
Y1 - 2002/1/17
N2 - The effects of composition and heat-treatment on the protium absorption-desorption properties of Ti-V-Cr alloys were investigated. It was found that the Ti-35V-40Cr alloy shows a 2.6 mass% protium capacity. The plateau pressure of the Ti-35V-xCr alloys increased with decreasing lattice constants associated with increasing Cr content. The main phase of the as-cast Ti-xV-Cr (Cr/Ti=40/25) alloys containing more than 15%V was a b.c.c. phase. These b.c.c. alloys exhibited a 2.4 mass% protium capacity. Heat-treatment over 1673 K was effective on stabilizing the b.c.c. structure for the Ti-xV-Cr (Cr/Ti=2/3) alloys with low V content. The Ti-5V-57.5Cr alloy heat-treated at 1673 K for 1 h yields a high capacity of 2.8 mass% protium, which is the highest value at 313 K reported so far. The alloy is economically promising since it contains low amounts of expensive V metal.
AB - The effects of composition and heat-treatment on the protium absorption-desorption properties of Ti-V-Cr alloys were investigated. It was found that the Ti-35V-40Cr alloy shows a 2.6 mass% protium capacity. The plateau pressure of the Ti-35V-xCr alloys increased with decreasing lattice constants associated with increasing Cr content. The main phase of the as-cast Ti-xV-Cr (Cr/Ti=40/25) alloys containing more than 15%V was a b.c.c. phase. These b.c.c. alloys exhibited a 2.4 mass% protium capacity. Heat-treatment over 1673 K was effective on stabilizing the b.c.c. structure for the Ti-xV-Cr (Cr/Ti=2/3) alloys with low V content. The Ti-5V-57.5Cr alloy heat-treated at 1673 K for 1 h yields a high capacity of 2.8 mass% protium, which is the highest value at 313 K reported so far. The alloy is economically promising since it contains low amounts of expensive V metal.
KW - Protium absorption-desorption properties
KW - Ti-V-Cr alloys
UR - http://www.scopus.com/inward/record.url?scp=0037122497&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0037122497&partnerID=8YFLogxK
U2 - 10.1016/S0925-8388(01)01647-4
DO - 10.1016/S0925-8388(01)01647-4
M3 - Conference article
AN - SCOPUS:0037122497
SN - 0925-8388
VL - 330-332
SP - 511
EP - 516
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
T2 - Proceedings of the International Symposium on Metal-Hydrogen (MH 2000)
Y2 - 1 October 2000 through 6 October 2000
ER -