Authors: F.I. Panteleenko, V.A. Okovity, A.A. Litvinko, V.V. Okovity, V.M. Astashinsky, V.O. Korotin

Title of the article: Composite material for plasma spraying based on M-Crolls and oxide ceramics

Year: 2024, Issue: 1, Pages: 4-13

Branch of knowledge: 2.5.5. Technology and equipment for mechanical and physical-technical processing

Index UDK: 621.793.7:621.762

DOI: 10.26730/1999-4125-2024-1-4-13

Abstract: The article presents the results of the development of a composite material based on MCrAlYТа and oxide ceramics for plasma spraying. The most promising for obtaining wear-resistant plasma coatings that increase the durability and reliability of mechanisms and machines are those materials that can withstand maximum loads without plastic deformation in friction pairs in a wide range of operating temperatures and have the highest resistance to abrasive wear, the ability to work in aggressive media and vacuum. The most promising for operation under such conditions are compositions that consist of a metal-ceramic matrix and an oxide component evenly distributed in it. The performance of such compositions is ensured by the high strength properties of the cermet matrix. The heating rates of powder particles of oxide materials while in the plasma flow are limited by their low thermal conductivity. The manufacture of powder materials using the agglomeration method and the binders used in this process help to produce rather large agglomerates from finely dispersed components of the charge with a size of 1–5 μm with large specific surface area and the required porosity. This causes an increased heat exchange between the powder particles and the plasma jet and an increase in the velocity values of the sprayed particles. Powder materials manufactured using the developed technology have a number of features: firstly, a complex geometric shape; secondly, a rather developed formed relief of particles.

Key words: composite material m-croll oxide ceramics plasma spraying durability and reliability of mechanisms heating rate of powder particles agglomeration method

Receiving date: 27.12.2023

Approval date: 15.02.2024

Publication date: 12.03.2024

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