Manufacturing Technology 2026, 26(3):364-371 | DOI: 10.21062/mft.2026.028

Analysis of Atmospheric Plasma Spray Surface Composite Multilayer for Tire Mold Applications

Jan Novotný ORCID..., Filip Mamoń ORCID..., Štefan Michna ORCID..., Tomáš Vlach ORCID...
Faculty of Mechanical Engineering, J. E. Purkyne University in Usti nad Labem. Pasteurova 3334/7, 400 01 Usti nad Labem. Czech Republic

Usti nad Labem. Czech Republic. E-mail: jan.novotny@ujep.cz This work investigates atmospheric plasma spraying (APS) coatings on aluminum molds used for truck tire vulcanization. Cobalt-based powders (MS1) and a NiAl interlayer combined with cobalt powders (MS1 + MS2) were deposited on AlMg3Mn alloy substrates. SEM/EDS analyses revealed that the NiAl interlayer improved adhesion, reduced chromium agglomeration, and enhanced ele-mental homogeneity. Vickers microhardness testing showed higher hardness values for MS1 + MS2 (457 HV 0,3) compared to MS1 (436 HV 0,3). Despite some residual cracks and porosity, their impact on per-formance was minimal. The study concludes that NiAl interlayer coatings significantly improve mold durability and operational life. Automated application and controlled-atmosphere spraying methods are recommended to further optimize coating properties for industrial use.

Keywords: Atmospheric Plasma Spraying, Aluminum molds, Coatings, Microhardness, Vulcanization
Grants and funding:

This manuscript was created with the support of the project: NANOTECH ITI II., OP VVV Project with reg. No CZ.02.1.01/0.0/0.0/18_069/0010045

Received: October 13, 2025; Revised: April 24, 2026; Accepted: April 30, 2026; Prepublished online: May 4, 2026; Published: June 29, 2026  Show citation

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Novotný J, Mamoń F, Michna Š, Vlach T. Analysis of Atmospheric Plasma Spray Surface Composite Multilayer for Tire Mold Applications. Manufacturing Technology. 2026;26(3):364-371. doi: 10.21062/mft.2026.028.
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