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Study on Surface Fractal Dimension of Functionally Gradient Materials

Fractal dimension(D f) of ZrO 2/NiCrAl functionally gradient materials(FGMs) which was prepared by plasma spraying technology was investigated The results show that D f displays curvilinear variety with NiCrAl content increased, and it can be found there is a good corresponding relation between fraction dimension and bending strength When NiCrAl content is around 30%, there is the percolation phenomena, and the bending strength is obviously increased The studies set up the relationship between fractal dimension and macroscopical properties