Mat. Res. vol.17 número6

In conclusion, it can be said that both high surface hardness of borided samples and applied load were effective on changing the wear mechanism and wear resistance of Ni-based

The cyclic oxidation resistance of the alloy increased with increase in time at temperature required to reach a specific chromium dioxide layer thickness and this in turn

The COR of Fe-20Cr alloy coated with RE oxide gels varied and it was shown that COR depends on the thickness of the chromium dioxide layer formed on the alloy surface. In the

It is observed that for the time of 6 minutes of exposure, at both temperatures, the thickness of the oxide layer increased more than 100 fold, when compared to the formed

Mechanical property (hardness) and tribological properties (wear and coefficient of friction) were investigated to deduce the optimum manufacturing parameters and

to the conventional heat treatment, the cryogenic treatment at optimum soaking duration improves carbide density and hardness and reduces the wear rate due to conversion of

We also determined the critical strain rate (CSR), understood as the tangent of the inclination angle between the tangent to the crack development curve and the crack development

The probability of attending school four our group of interest in this region increased by 6.5 percentage points after the expansion of the Bolsa Família program in 2007 and