Preparation and hot rolling process of nano FeSi alloy plasma coating

Abstract

The invention discloses a preparation and hot rolling process of a nano FeSi alloy plasma coating, which comprises the following steps: (1) adding a certain amount of water and a small amount of polyacrylic acid dispersing agent into nano FeSi powder, and mixing to form jelly; (2) stirring the jelly by using a mechanical stirring method; (3) after stirring is finished, air-drying the jelly , and after air drying is finished, obtaining the material capable of being directly used for plasma spraying ; (4) carrying out spraying operating by adopting a plasma spraying method; (5) after spraying is finished,carrying out hot rolling treatment ; and (6) carrying out annealing treatment. The nanotechnology, the atmospheric plasma spraying technology and the material hot rolling technology are effectively and orderly combined, holes and cracks of the plasma coating are effectively reduced by means of the characteristics of small particle size and high energy of the nanopowder, the compactness and uniformity of the coating are improved, by means of the material hot rolling technology, and the coating structure is more compact and uniform under the action of strong pressure of rolling force, and holes are further reduced.

Description

technical field [0001] The invention relates to the preparation of a nano-plasma corrosion-resistant coating and the corresponding mechanical processing technology, and belongs to the field of nano-plasma technology and mechanical treatment. Background technique [0002] Nano-plasma coating is a relatively new technology produced by the effective combination of nano-technology and plasma spraying technology. It is a further extension and expansion of micro-plasma technology. Special properties, compared with micron particles, have more excellent and unique properties, so nano-plasma technology can also be said to be a new and innovative new technology. At present, the most convenient research is mainly the thermal barrier coating technology, while the research on corrosion-resistant nano-plasma coatings, especially metal alloy corrosion-resistant nano-plasma coatings is still relatively small. few. [0003] Defects such as holes, cracks, and loose and uneven structures are...

AI Technical Summary

Problems solved by technology

[0003] Defects such as holes, cracks, and loose and uneven structures are a major problem in plasma coatings at present. There is no good way to solve this problem. From the current situation of nano-plasma coatings in the field of thermal barrier coatings From the point of view, the condition of holes, cracks and loose and uneven structure has been significantly improved compared with the micron plasma coating, but this problem still exists in the nano plasma coating, and it is obviously revealed in the actual application process of the nano plasma coating However, the promotion of nano-plasma coatings in industrial production is greatly restricted, especially in the application of plasma coatings in corrosion resistance. The existence of holes and cracks will make corrosive substances penetrate holes and cracks and contact with the substrate. direct contact, thereby rendering the protective coating ineffective