Abstract
The paper presents the results of experiments carried out to obtain multi-component coatings that have a broader range of properties compared to their single-component counterparts. We have studied the generation of coatings based on a Co (18…20%)-Cr (5…7%)-Al (0.3…0.4%)-Y (0.2…0.5) alloy. We have also studied the chemical composition of the coating, its thickness, and the transient zone condition. We present here the results of X-ray fluorescence and X-ray spectroscopy microanalysis of such coatings. It is shown that the microtopography of surfaces depends on the coating generation conditions; the set of chemical elements in each coating is similar for all specimen, their concentration depends on the deposition conditions, and the thickness distribution is constant; there is virtually no diffusion of coating and substrate materials. We have identified an insignificant percentage of substrate materials in the generated coating. The thicker the coating, the less substrate materials it contains.
Highlights
IntroductionScientific and technical literature contains a lot of information on how to generate multi-component coatings with specified characteristics and adjustable composition [1‒9]
Scientific and technical literature contains a lot of information on how to generate multi-component coatings with specified characteristics and adjustable composition [1‒9]. Such coatings are widely applied in air, rocket, and mechanical engineering
On the other hand, improving the efficiency of ground and air turbines necessitates higher temperatures of input gases, which creates excessive temperature loads on the 'hot tract' parts, on the blades. This is why the service life of engines directly depends on the service life of blades
Summary
Scientific and technical literature contains a lot of information on how to generate multi-component coatings with specified characteristics and adjustable composition [1‒9]. Such coatings are widely applied in air, rocket, and mechanical engineering. On the other hand, improving the efficiency of ground and air turbines necessitates higher temperatures of input gases, which creates excessive temperature loads on the 'hot tract' parts, on the blades. This is why the service life of engines directly depends on the service life of blades. Used coating materials are MeCrAlY where the main component (Me) is cobalt, cobalt plus nickel, cobalt plus chromium, etc
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