???? ?? ??? ???? ?? ???? ??????? ?????? ???? ?? ?? ?? ?? ????? ????? ????? ? ??? ???? ?? ?? ???? ????????? ????? ????.?????? ? ???? ???? ??? ????? ???????? ?? ????? ????? ?? ?? ???? ?? ??? ??? ???? ?????? ??? ??????? ?? ???? ????? ?? ???? ??? ????? ????? ?????? ????? ????? ? ?????? ?? ????? ???? ??? ???? ???? ?????? ???? ??? ???? ??? ?? ???? ???? ?

The chromium in the stainless steel forms a thin, adherent passivating oxide layer that provides corrosion resistance by blocking the diffusion of oxygen for the underlying bulk alloy. Somewhere around 12–13 wt% chromium is required to impart the necessary corrosion resistance to these alloys.In instances with moderate rotations, utilizing a NiTi