TY - JOUR
T1 - Preparation and properties of alumina/nickel-cobalt alloy nanocomposites
AU - Oh, Sung Tag
AU - Sando, Mutsuo
AU - Niihara, Koichi
PY - 1998/11
Y1 - 1998/11
N2 - High-density nickel-cobalt alloy-dispersed Al2O3 (Al2O3/ Ni-Co alloy) composites were obtained via the hydrogen reduction and hot pressing of Al2O3, Ni(NO3)2·6H2O, and Co(NO3)2·6H2O powder mixtures. Microstructural investigations revealed that nanometer-sized alloy particles were dispersed homogeneously at the matrix grain boundaries, forming the intergranular-type nanocomposite. High strength (>1 GPa) was registered for the Al2O3/10 wt% Ni-Co alloy composite. An inverse magnetostrictive response to applied stress was observed, because of the Ni-Co alloy dispersions, which indicates promise for incorporating new functions such as stress and fracture sensing into the structural ceramics without any loss of mechanical properties.
AB - High-density nickel-cobalt alloy-dispersed Al2O3 (Al2O3/ Ni-Co alloy) composites were obtained via the hydrogen reduction and hot pressing of Al2O3, Ni(NO3)2·6H2O, and Co(NO3)2·6H2O powder mixtures. Microstructural investigations revealed that nanometer-sized alloy particles were dispersed homogeneously at the matrix grain boundaries, forming the intergranular-type nanocomposite. High strength (>1 GPa) was registered for the Al2O3/10 wt% Ni-Co alloy composite. An inverse magnetostrictive response to applied stress was observed, because of the Ni-Co alloy dispersions, which indicates promise for incorporating new functions such as stress and fracture sensing into the structural ceramics without any loss of mechanical properties.
UR - http://www.scopus.com/inward/record.url?scp=0032208530&partnerID=8YFLogxK
U2 - 10.1111/j.1151-2916.1998.tb02729.x
DO - 10.1111/j.1151-2916.1998.tb02729.x
M3 - Article
AN - SCOPUS:0032208530
SN - 0002-7820
VL - 81
SP - 3013
EP - 3015
JO - Journal of the American Ceramic Society
JF - Journal of the American Ceramic Society
IS - 11
ER -