The invention discloses iron-based amorphous
powder and a preparation method and application thereof. The
powder comprises the following elements in percentages by weight: 17-23wt% of Cr, 2.7-4.5wt% of B, 0.3-1wt% of C, 0.5-2.5wt% of Si, 2-3wt% of Cu, 3-8wt% of Ni, 12-18wt% of Mo, 2-4wt% of Co and the balance of Fe. The preparation method comprises the following steps: adding raw materials in an induction electromagnetic furnace, heating and melting; and carrying out water atomization on
molten metal, then
drying, and screening
powder. According to the application of the iron-based amorphous powder in preparation of an anti-
cavitation and
corrosion-resistant iron-based amorphous
powder coating, the
coating is prepared by a supersonic
flame spraying technology, and the surface of a matrix is subjected to oil removal and
rust removal treatment, and then is subjected to pretreatment such as
sand blasting. The
coating which is low in
porosity, high in
hardness, excellent in anti-
cavitation property and excellent in
corrosion resistance can be obtained. The iron-based amorphous powder is suitable for demanding components such as marine
hydraulic machinery, key components of nuclear submarines, parts of engines of airplanes, and bosses of blades of
aviation engines, particularly has advantages in a severe marine environment, facilitates industrialization, and is wide in application prospect.