Nanoidentation Study of the Mechanical Properties of Granular Metal Thin Films
Keyword(s):
ABSTRACTNanoindenter techniques have been used to investigate the mechanical properties of Ag-Al2O3 and Fe-SiO2 granular metal films. A discontinuity in the rate of change of hardness as a function of metal volume fraction p was observed. The discontinuity occurs at the percolation threshold pc of the metal, and appears to result from a change in the deformation mechanism at pc. A large peak in compliance (inverse modulus) as measured during indentation unloading was observed in the Ag-Al2O3 films near pc, but was not observed for the Fe-SiO2 films. The compliance peak displayed by Ag-Al2O3 is believed to result from debonding at the metal-ceramic interface and subsequent interfacial sliding, and is not an intrinsic materials property.
Keyword(s):
2015 ◽
Vol 29
(1)
◽
pp. 157-161
◽
Keyword(s):
2013 ◽
Vol 663
◽
pp. 326-330
◽
2016 ◽
Vol 161
◽
pp. 012054
Keyword(s):
Keyword(s):
Keyword(s):