Percolation Effects in the Mechanical Properties of Granular Ni-A12O3 thin films
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ABSTRACTThe mechanical properties of sputtered Ni-Al2O3 granular thin films were investigated by low load microharaness testing. It was found that the microhardness of these films displayed a percolation threshold at a nickel volume fraction of about 0.6, below which the hardness is greatly enhanced. This behavior is qualitatively similar to the electrical and magnetic properties of these types of films. A percolation threshold in hardness can be understood as due to a change in the mechanism for plastic deformation.
2019 ◽
Vol 2019
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pp. 1-12
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2014 ◽
Vol 50
(1)
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pp. 1-4
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2012 ◽
Vol 430-432
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pp. 1979-1983
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