Alloy powder for circulating fluidized bed boiler water wall tube laser cladded coating

The invention discloses alloy powder for a circulating fluidized bed boiler water wall tube laser cladded coating. The powder comprises the following components in percentage by mass: 1.0 to 1.6 percent of C, 28 to 34 percent of Cr, 2 to 5 percent of Ni, 3 to 8 percent of W, 0.2 to 0.5 percent of Mn, 1.0 to 1.4 percent of Si, 0.02 to 0.06 percent of B, 0.05 to 0.10 percent of Zr, 0.02 to 0.06 percent of Ce and the balance of Co. The powder is cladded on the surface of the water wall tube by laser to form the cobalt-base alloy coating with relatively high hardness, oxidation resistance, corrosion resistance, erosion wear resistance and excellent cladding performance. Therefore, the technical problem on corrosion resistance and wear resistance of a circulating fluidized bed boiler water wall tube is solved.