October 2015

The effect of the spinodal curve condition on J – T inversion curves for van der Waals real gas

This paper examines a consequence of spinodal curve condition on the Joule – Thomson inversion curves, for van der Waals real gas. To this end, we consider the differential form of Joule – Thomson coefficient, and concentrate on the parametrical algebraic equation of the corresponding family of curves in a P – V Cartesian frame of reference.  The aim of this work is not the prediction of Joule...

Author(s): J. Venetis

October 2015

Finite-element modeling and experimental study of nitrogen concentration profile in 16MnCr5 gas nitrided steel

In this paper, a numerical and experimental study of the nitrogen concentration profile in the precipitation layer of gaseous nitrided 16MnCr5 alloy steel was performed. The gaseous nitriding was performed in ammonia atmosphere at 510, 550 and 590°C, and for each temperature four different nitriding times were chosen. Nitrogen concentration profile of the nitrided specimens was experimentally investigated with...

Author(s): Naim Syla and Fisnik Aliaj