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Two methods of pre-crushing power, hydrogen decrepitation (HD) and mechanical crushing (MC), were applied to prepare Sm (CobalFe0.28Cu0.06Zr0.02)7.84 magnets. Their microstructures and magnetic properties were investigated. Compared with a conventional MC method, the Sm2O3 content was decreased and the coercivity was enhanced from 8.67 to 24.03 kOe with an HD method. The larger grain size and less...
The influences of intermixing nano-Ti02 particles on the wettability and interfacial reaction of novel lead-free Sn3.5Ago.5Zn composite solder with Cu substrate were investigated. The wettability of the Sn3.5Ag0.5Zn composite solder alloy was measured by the sessile-drop method under a 10−3 Torr vacuum at different temperature up to 30 mins. Scanning electron microscopy (SEM) was used to quantify...
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