TY - JOUR
T1 - Evaluation of bonding strength between yttria coating and vanadium alloys for development of self-cooled blanket
AU - Akamatsu, Hitoshi
AU - Satou, Manabu
AU - Sato, Takashi
AU - Jain, Amit
AU - Gupta, Vijay
AU - Hasegawa, Akira
N1 - Funding Information:
This study was partly supported by Grant-in-aid for scientific research (B) 21360462 from the Ministry of Education, Culture, Sports, Science and Technology of Japan.
PY - 2011/10/1
Y1 - 2011/10/1
N2 - A laser spallation technique was utilized for measurement of the bonding strength between yttria coating and vanadium alloys. The bonding strength between the alloys containing small amounts of yttrium made by levitation melting method and the yttria coating prepared by vacuum plasma-spray was evaluated to be about 950 MPa. It was not clearly observed the effects of alloying elements on the bonding strength. The strength varied about 100 MPa by specimens and by alloy compositions. Detailed observation of the failure type at the interface indicated that crack formation in the coating reduced the stress at the interface, so that the evaluation might be overestimated. It was demonstrated that application of the laser spallation technique to measure the bonding strength between ceramics coating and base material was useful for the evaluation of mechanical integrity of the coating.
AB - A laser spallation technique was utilized for measurement of the bonding strength between yttria coating and vanadium alloys. The bonding strength between the alloys containing small amounts of yttrium made by levitation melting method and the yttria coating prepared by vacuum plasma-spray was evaluated to be about 950 MPa. It was not clearly observed the effects of alloying elements on the bonding strength. The strength varied about 100 MPa by specimens and by alloy compositions. Detailed observation of the failure type at the interface indicated that crack formation in the coating reduced the stress at the interface, so that the evaluation might be overestimated. It was demonstrated that application of the laser spallation technique to measure the bonding strength between ceramics coating and base material was useful for the evaluation of mechanical integrity of the coating.
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U2 - 10.1016/j.jnucmat.2011.03.004
DO - 10.1016/j.jnucmat.2011.03.004
M3 - Article
AN - SCOPUS:80053614878
VL - 417
SP - 1253
EP - 1256
JO - Journal of Nuclear Materials
JF - Journal of Nuclear Materials
SN - 0022-3115
IS - 1-3
ER -