TY - JOUR
T1 - Morphology of pores and interfaces and mechanical behavior of nanocluster-assembled silicon nitride ceramic
AU - Kalia, Rajiv K.
AU - Nakano, Aiichiro
AU - Tsuruta, Kenji
AU - Vashishta, Priya
PY - 1997/1/27
Y1 - 1997/1/27
N2 - Million atom molecular-dynamics simulations are performed to investigate the structure, dynamics, and mechanical behavior of cluster-assembled Si3N4. These solids contain highly disordered interfacial regions with 50% undercoordinated atoms. Systems sintered at low pressures have percolating pores whose surface morphologies are well characterized by two values of the roughness exponent, 0.46 and 0.86; these are close to the experimental values found by Bouchaud et al. for fracture surfaces. Results for elastic moduli are consistent with a three-phase model for heterogeneous materials.
AB - Million atom molecular-dynamics simulations are performed to investigate the structure, dynamics, and mechanical behavior of cluster-assembled Si3N4. These solids contain highly disordered interfacial regions with 50% undercoordinated atoms. Systems sintered at low pressures have percolating pores whose surface morphologies are well characterized by two values of the roughness exponent, 0.46 and 0.86; these are close to the experimental values found by Bouchaud et al. for fracture surfaces. Results for elastic moduli are consistent with a three-phase model for heterogeneous materials.
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U2 - 10.1103/PhysRevLett.78.689
DO - 10.1103/PhysRevLett.78.689
M3 - Article
AN - SCOPUS:0001178773
SN - 0031-9007
VL - 78
SP - 689
EP - 692
JO - Physical Review Letters
JF - Physical Review Letters
IS - 4
ER -