Integrity of graphene crystals in composite solder materials based on random forest model
Graphene reinforced Sn based composite brazing materials can improve the wettability of the brazing ma-trix,enhance the thermal conductivity,conductivity,and comprehensive mechanical properties of the brazing materi-al.The crystal structure integrity of graphene in composite brazing materials is severely affected by the powder met-allurgy process during preparation,which weakens the strengthening effect of graphene.Therefore,this article uses the Random Forest(RF)algorithm to study the relationship between high-energy ball milling process parameters and the integrity of graphene crystal structure in mixed powders.The results show that the correlation coefficients R2 of the RF model in the training and testing sets reach 0.97 and 0.94,respectively.At the same time,the peak change trend of graphene Raman spectroscopy characteristics predicted by the RF model after ball milling is consist-ent with the microstructural changes observed by transmission electron microscopy.This indicates that the RF mod-el has good predictive performance in the mapping relationship between ball milling process and the integrity of gra-phene crystal structure.The adoption of this model has important guiding significance for the preparation of gra-phene reinforced Sn based composite brazing materials.
Sn based soldergrapheneintegrity of crystal structurerandom forest algorithm
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