Laser cladding metal-ceramic composite is an advanced surface modified technology, which can combine the high toughness of metal with the strength of ceramic and improve the material surface performance, such as wear resistance, corrosion resistance, and oxidation resistance and so on. The laser cladding of Co/SiC alloys and Co/SiC coating adding rare earth oxide on 45 steel matrix was prepared by high power continuous wave CO2 laser. Microstruction of the cladding coating is studied by means of X-ray diffr...