Corrosion-resistant fully dense thermal spraying metal alloy coating and preparation method thereof
A metal alloy, thermal spraying technology, applied in the direction of metal material coating process, coating, melting spraying, etc., can solve the problem of unsuitable shape and structure, and achieve the effect of increasing the heating temperature
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Example Embodiment
[0035] Example 1
[0036] The preparation method of the corrosion-resistant completely dense thermal spraying metal alloy coating includes the following steps:
[0037] Step 1: Using Mo and Ni20Cr as the typical coating shell material and core material as initial materials, the Mo-coated NiCr core-shell structure NiCr-20Mo composite powder prepared by ball milling mechanical alloying and subsequent heat treatment is used for coating preparation. Structure see figure 1 , figure 1 Among them, (a) is the cross-sectional structure of NiCr-20Mo powder (low magnification); (b) is the cross-sectional structure of NiCr-20Mo powder (high magnification); (c) is the surface morphology of NiCr-20Mo powder; figure 1 It can be seen that the dense Mo shell layer is completely and uniformly coated on the surface of the NiCr core powder particles, and the Mo and NiCr core particles are metallurgically bonded together through a thin intermediate diffusion layer to ensure that the particles are heate...
Example Embodiment
[0044] Example 2
[0045] Using Mo-coated stainless steel powder as the spray material, plasma spraying on the surface of ordinary carbon steel substrate to prepare a 300-micron-thick high-molybdenum stainless steel coating, and the coating is shot blasted with a handheld shot blasting gun, of which 100 mesh steel is used for shot blasting The compressed air pressure of the accelerated steel ball is 0.3MPa. The corrosion resistance of ordinary low-carbon steel sprayed with the coating by the electrochemical method shows that its electrochemical potential and corrosion current are not affected by the substrate, and are completely equivalent to the coating itself, that is, the coating can achieve the low-carbon steel substrate. Complete corrosion protection.
Example Embodiment
[0046] Example 3
[0047] The FeAl powder coated with Mo is used as the spraying powder, and a 150-micron thick coating is prepared by plasma spraying on the surface of the heat-resistant steel. The coating is shot blasted with a hand-held sandblasting gun. The shot blasting uses 60 mesh steel balls to compress The air pressure is 0.4MPa. A 50-hour corrosion resistance test conducted under a simulated garbage incinerator corrosive atmosphere at 400°C to 650°C shows that the coating prepared by the present invention basically has no sulfide corrosion, chlorination corrosion, hydrochloric acid corrosion, etc., and has excellent high temperature corrosion resistance performance.
PUM
Property | Measurement | Unit |
---|---|---|
Thickness | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap