Tungsten Copper Points Hardness with CeO2 /Ce

Tungsten copper points (Cu20W80)’ hardness with CeO₂ is small and varies significantly while with Ce’s is relatively large and vary little when additive amount increasing. The reason why it has different change trend described as bellow:

Tungsten copper points hardness with CeO₂ is small and varies significantly. The reason: As the results drawn from the density experiment shows that: In general, tungsten copper points’ density with CeO₂ (rare earth oxide) is low. This is the main reason why the hardness is low when the additive (CeO₂) amount accounts for 1% and 3% CeO_2. What makes Cu20W80’s hardness the minimum is that the existence of porous holes and agglomeration phenomenon when the additive amount of CeO₂ in the sample tissue is 3%. Thanks to a second phase strengthening, the hardness of W-Cu points improved when the amount of CeO₂ is accounting for 5% and 10%

Due to dispersion strengthening function, Cu20W80’ hardness with Ce is relatively large and vary little when additive amount increasing. But tungsten copper points will bring about lots of oxide inclusions, leading to hardness decrease when the additive is too much.



 

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