Nickel-based alloy sand and method for optimizing surface of damaged area by using nickel-based alloy sand

The invention discloses nickel-based alloy sand and a method for optimizing the surface of a damaged area through the nickel-based alloy sand and relates to the field of nickel-based high-temperature alloy repairing, and the nickel-based alloy sand comprises Cr, Co, A < l >, Mo, Nb, Hf, Sc and the balance N < i > or/and inevitable impurity elements. The method for optimizing the surface of the damaged area mainly adopts a mode of carrying out sand blasting on the surface of the damaged area twice. According to the method, sand blasting treatment can be carried out on the surface of the damaged area, the purpose of modifying the surface of the damaged area is achieved, melting point inhibiting elements are promoted to be diffused to a matrix, and the bonding strength of a shape remodeling area and a base material connecting interface is improved. 本发明公开了一种镍基合金砂及其优化损伤区表面的方法，涉及镍基高温合金修复领域，镍基合金砂包括Cr、Co、A l、Mo、Nb、Hf和Sc，其余部分为N i或/和不可避免的杂质元素；优化损伤区表面方法主要采取两次对损伤区表面进行喷砂的方式。本发明能够对损伤区面进行喷砂处理，达到损伤区表面改性的目的，促进熔点抑制元素向基体扩散，提高形性