The microstructure is made of ZnO grain surrounded by the melted additives as boundaries [4].
Compared to its effect on drag reduction, polymer additive effects on turbulent boundary layer (TBL) wall pressure fluctuations have received little attention.
It is proposed that in addition to the ratio of Ag templates and Au ion additives, the twin boundaries of the Ag templates were the dominating factor causing hollow alloy nanostructures.
Experimental results showed that Hf was successfully incorporated and precipitated Hf-rich particles were observed on the coating surface, along grain boundaries within the additive layer, and at the interface between the additive layer and the interdiffusion layer.
The contributions from solute atoms and grain boundaries are simply additive, whereas those from dislocations and precipitates should be treated by taking the square root of the sum of the squares of two values.
However, the composition of the additives and, hence, the grain boundary amorphous phase can significantly alter this response; the question remains as to whether this is due to interfacial structure and bonding or the state of residual stresses.
This result could be related to changes in the transport behavior due to an increase in resistivity at the grain boundaries where the additive nanoparticles predominantly segregated.
Combined with the oil additive DMTD, the coatings exhibited excellent boundary-lubricated friction performances under a wide load range.
In addition, an influence of the additive external noise on chaotic vibrations of multi-layer beam plate structures coupled only by boundary conditions is investigated.
The objective of this study is to understand the role of friction modifiers and antiwear additives on the durability of DLC coating under boundary lubrication conditions.
