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The effect of La and graphite additives on the oxidation resistance and arc erosion behavior of Cu alloys were studied. The pure Cu was completely oxidized to be Cu2O and CuO at 1000° for 1h, whereas the CuLa/C was partially oxidized. The reinforced phase graphite suppressed the formation of continuous copper oxide films. The formation of compact barrier layer of CuLa/C alloy was helpful for preventing...
The paper chiefly discusses using rapeseed oil, soybean oil and methanol to conduct transesterification through the catalysis of NaOH so as to get vegetable insulating oil. It focuses on the exploration of transesterification's influencing factors, relationship between conversion rate and viscosity, as well as the performance improvement and evaluation of transesterification's vegetable oil.
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