Tungsten Copper Contacts With CeO2 Density

Whether adding rare earth or rare earth oxides to tungsten copper contacts, Cu20W80’s density decrease as the increase of additive amount. Theoretically, the density of Cu20W80 is 15.64g / cm³, is higher than the density of Ce and CeO₂, the density of Ce is 6.77 g / cm³, and the density of CeO2 is 7.10 g / cm³, therefore, if the additive amount of rare earth or rare earth oxide is larger, the density of tungsten copper contacts sample will be lower.

As can be seen from the analysis of the experimental results, density test results and analysis of the influence of rare earth (Ce) on Cu20W80 performance are as follows:
When Ce is added in an amount of 1%, the density of the sample decline significantly; when its amount is from 1% to 3%, the density does not decline substantially; the actual density is higher relatively when the density is of 3%, which can be considered the optimum amount of Ce. Density test results and analysis of the influence of rare earth oxide (CeO₂) on Cu20W80 performance are as follows:
The density of Cu20W80 decrease unevenly and its trend is dramatic, which significantly decrease with the increase of the amount of CeO₂, however, when its content is from 5% to10 %, the change trend of density is relatively flat, and upward slightly. In summary, adding rare element tungsten copper contact is better than rare earth oxide, and its optimal addition amount is of 1% -3%.



 

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