TY - GEN
T1 - Oxidation behavior of Zr-Nb alloys at 973-1273 K in air
AU - Arima, T.
AU - Miyata, K.
AU - Idemitsu, K.
AU - Inagaki, Y.
PY - 2008/12/1
Y1 - 2008/12/1
N2 - • Weight gain due to oxidation increased with Nb content at T ≤ 1079 K (α+βZr region), whereas at higher temperatures, that was smallest for Zr-2.5Nb alloy. • Oxidation parabolic rate constant was almost same as other experiments, and activation energy was somewhat smaller at higher temperatures. • For Zr-xNb alloy with small x, oxide film consisted mainly of m- and t-ZrO2. But, for sample with higher x, m-ZrO2 and 6ZrO2-Nb2O5 were observed. • At 1273 K, double layered oxide formed on Zr-10Nb alloy. • Nb aggregated in grain at outer oxide layer, whereas at inner oxide layer and underlying metal, Nb precipitated in grain boundaries.
AB - • Weight gain due to oxidation increased with Nb content at T ≤ 1079 K (α+βZr region), whereas at higher temperatures, that was smallest for Zr-2.5Nb alloy. • Oxidation parabolic rate constant was almost same as other experiments, and activation energy was somewhat smaller at higher temperatures. • For Zr-xNb alloy with small x, oxide film consisted mainly of m- and t-ZrO2. But, for sample with higher x, m-ZrO2 and 6ZrO2-Nb2O5 were observed. • At 1273 K, double layered oxide formed on Zr-10Nb alloy. • Nb aggregated in grain at outer oxide layer, whereas at inner oxide layer and underlying metal, Nb precipitated in grain boundaries.
UR - http://www.scopus.com/inward/record.url?scp=78649419692&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=78649419692&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:78649419692
SN - 9781605606248
T3 - Materials Research Society Symposium Proceedings
SP - 164
EP - 178
BT - Materials Innovations for Next-Generation Nuclear Energy
T2 - 2007 MRS Fall Meeting
Y2 - 26 November 2007 through 30 November 2007
ER -