Numerical Study of the Two-Stage Process of Synthesis of a Composite Controlled by a Moving Source under Conditions of Conjugate Heat Exchange

In the conditions of the surface treatment of materials and coating application using mixtures of powders (metals, metals and nonmetals, metals and oxides) capable of chemical interactions, problems similar to those of solid-phase combustion theory arise. Currently available publications, which confirm the fact of the reactions, are limited to the analysis of the obtained structures, mechanical properties and the statement of the presence of certain compounds and phases. We present the reduced models for the synthesis of composites on a planar substrate allowing us to analyze qualitative effects. The first model is one-dimensional with a total reaction. The second model corresponds to the synthesis of a matrix-inclusion-type composite. The process is assumed to be driven by a moving heat source. Both models take into account the properties of the substrate. The transition to dimensionless variables reveals both the parameters characteristic of macrokinetics and the parameters typical for modern material synthesis technologies. The numerical solution shows that in the presence of a mobile heat source the reaction zone is sufficiently wide, and the temperature dynamics in general is dissimilar to that of combustion processes. It is shown that there is a parameter region in which partial transformation is observed. Two characteristics of the synthesis process have been determined - the time of the reaction initiation and the time of half-transformation (for a sample of finite size). Taking into account detailed kinetics, similar studies allow us to predict the qualitative composition of synthesis products when changing the conditions and initial composition of powder mixtures.

show abstract

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

customersupport@researchsolutions.com

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

Numerical Study of the Two-Stage Process of Synthesis of a Composite Controlled by a Moving Source under Conditions of Conjugate Heat Exchange

Cited by 2 publications

References 24 publications

Stresses in the Reaction Zone During Composite Synthesis

Stresses in the Reaction Zone During Composite Synthesis

Features of initiation of reactions in a flat layer located on a substrate by a mobile energy source

Contact Info

Product

Resources

About