TY - JOUR
T1 - Protium absorption properties of Ti-Cr-V alloys in low hydrogen pressure regions
AU - Tamura, T.
AU - Kamegawa, A.
AU - Takamura, H.
AU - Okada, M.
PY - 2001
Y1 - 2001
N2 - Ti-Cr-V alloys are known to absorb about 3.8 mass% of protium, but to desorb about 2 mass% because of the formation of stable protorides in low hydrogen pressure regions. However, few protium storage properties of the alloys in low hydrogen pressure regions were reported. This paper aims to clarify the protium absorption properties of Ti-Cr-V alloys in low hydrogen pressure regions. It was found that first low pressure plateau regions were coexistence regions of two different BCC phases for 20at% V alloys. Decreasing V content and increasing Cr content turned out to shift the beginning of the second high pressure plateau regions to low protium concentration in unstabilizing the protorides in the first plateau regions. As a result, the Ti-52 at% Cr-20 at%V alloy was designed and found to have about 2.4 mass% protium desorption capacity in the width of the second plateau region at 273 K.
AB - Ti-Cr-V alloys are known to absorb about 3.8 mass% of protium, but to desorb about 2 mass% because of the formation of stable protorides in low hydrogen pressure regions. However, few protium storage properties of the alloys in low hydrogen pressure regions were reported. This paper aims to clarify the protium absorption properties of Ti-Cr-V alloys in low hydrogen pressure regions. It was found that first low pressure plateau regions were coexistence regions of two different BCC phases for 20at% V alloys. Decreasing V content and increasing Cr content turned out to shift the beginning of the second high pressure plateau regions to low protium concentration in unstabilizing the protorides in the first plateau regions. As a result, the Ti-52 at% Cr-20 at%V alloy was designed and found to have about 2.4 mass% protium desorption capacity in the width of the second plateau region at 273 K.
KW - Body centered cubic phase
KW - Hydrogen storage alloy
KW - Low hydrogen pressure region
KW - Titanium-chromium-vanadium alloy
KW - Width of plateau region
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U2 - 10.2320/matertrans.42.1862
DO - 10.2320/matertrans.42.1862
M3 - Article
AN - SCOPUS:0035159557
SN - 1345-9678
VL - 42
SP - 1862
EP - 1865
JO - Materials Transactions
JF - Materials Transactions
IS - 9
ER -