Detonation-Gun Spraying Technology for Multilayer Coatings

Didar Yeskermessov, Nurgamit Kantay, Dauir Kakimzhanov, Bauyrzhan K. Rakhadilov, Akbota Apsezhanova, Waqar Ahmed

2023

Closed access Metadata (CSL-JSON)
DOI 10.4018/978-1-6684-6830-2.ch007
Data confidence 70 medium
How this score is calculated

It is built from checkable properties of the record itself: whether the article has a DOI, how many independent sources confirmed its data, whether the required fields are filled in, and how recent the latest confirmation is. Disagreement between sources and a missing identifier lower it. A value of 80 or above means the record was published without further checking; 60 to 79 means it is published at reduced confidence, with a manual check advisable. A record verified by an editor by hand is never pushed below 90 by a recalculation. This scores our data about the article, not the article itself.

Abstract

This study investigated the structural-phase, morphology, elemental composition, and tribological properties of coatings systems based on Al2O3, NiCr, and NiCr-Al2O3 fabricated by detonation-gas spraying method in a nitrogen/propane atmosphere. The coatings were characterised using SEM-EDX, XRD, Raman spectroscopy, and hardness measurements, and results analysed are presented. According to the experimental data, an optimal mode was selected that provides an increase in mechanical and tribological characteristics, and a method for detonation spraying surface hardening was also developed. Tribology tests have shown that the wear rates and friction coefficients of the coatings are highly dependent on the degree of filling of the gun.