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- W4281643845 abstract "The strengthening effect of particle-reinforced copper-based composites mainly depends on the interfacial bonding strength and dispersibility of the reinforcement. However, agglomeration of nanoparticles, as a bottleneck, restricts Orowan's strengthening mechanism. Different from the traditional preparation method for stacked nanoparticles, a hydrothermal method was developed to prepare interconnected bridge-like MoO2 quantum dots. Based on the interconnected structure and the brittleness of MoO2, it can be easily broken and uniformly dispersed into copper matrix during the ball milling process. Due to the dispersion strengthening effect and coherence of the interface between MoO2 and copper, these factors improve the mechanical performance of the composite material synergistically, resulting in simultaneous increases in YS (145.76 MPa), UTS (321.67 MPa), and hardness (94.79 Hv). The effectiveness of YS and UTS enhancement is 234% and 41%, respectively, while maintaining appropriate elongation (20.29%) and conductivity (94.9 IACS). MoO2 quantum dots are used for the first time in this work as particle reinforcements, and we demonstrate that the addition of oxide quantum dots to metal matrix composites can significantly enhance the mechanical properties of the composites by changing the morphology of the quantum dots." @default.
- W4281643845 created "2022-06-13" @default.
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- W4281643845 date "2022-07-01" @default.
- W4281643845 modified "2023-10-12" @default.
- W4281643845 title "Improving mechanical properties of copper composite by interconnected MoO2 quantum dots" @default.
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- W4281643845 doi "https://doi.org/10.1016/j.msea.2022.143365" @default.
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