MACHINING INFLUENCE ON THE SURFACE OF SOME ROUGHNESS SAMPLES

In Rutherford backscattering spectra of steel and cast iron, the shape of iron and carbide edges depend upon the roughness profiles of the m achined surface, the machining regime (which gives the specific roughn ess patterns), and the brand of alloy. For the carbide, it is evident that there is a high concentration of carbon within the thin coating l ayer of thickness equivalent to that of the average roughness value, R (a). To clarify the abnormal behaviour observed, a new experimental ma chining procedure has been developed.