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Characterization Investigations of W-Ni Matrix Composites Reinforced with TiB_2 and La_2O_3

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Gökçe H., Balcı Ö., Ağaoğulları D., Demirkan Ö., Genç A., Öveçoğlu M., Duman İ.
Acta Physica Polonica A
|
2013
|
vol. 123
|
issue 2
309-312
EN
W-1 wt% Ni (W1Ni) matrix composites reinforced with TiB_2 and La_2O_3 particles were fabricated via mechanical alloying and activated sintering methods. Powder blends with compositions of W1Ni-2 wt% TiB_2-x wt% La_2O_3 (x = 0.5, 1) were mechanically alloyed for 6 and 12 h. The results showed that increase in mechanical alloying duration to 12 h causes the decline of grain sizes of the W-Ni matrix to nanoscales. TiB_2/La_2O_3 particles have a significant effect on the density/microhardness values and wear amounts of the sintered samples.
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