A (TiO_2+B_2O_3+Al_2O_3+TiB_2)/Ni-Cr-Al metal - cerami c co ating was fabri cated on
Chinese brand 40Cr steel by laser. TiB2, Al2O3 was introduced by an in situ reaction
of Al, B2O3 and TiO2 during laser cladding process. The microsmicture, phase,
elemen distribution and microhardness have been analyzed wth the aid of
microscope, X-ray diffraction, electron probe and microhardness-tester. It was
shown that there are diff...