Multi-Criteria Optimization of Automatic Electro-Spark Deposition TiCrNiVSi0.1 Multi-Principal Element Alloy Coating on TC4 Alloy
Source abstract
Abstract
In this work, TiCrNiVSi0.1 coatings were prepared on TC4 alloy by CNC-controlled automatic electro-spark deposition (ESD). The TOPSIS-based Taguchi method was applied for multi-criteria optimization of ESD coating quality. Frequency (f), capacitance (c), and electrode moving speed (v) were considered process parameters for optimizing the coating quality criteria, which included coating thickness, coating coverage, and porosity in the coating. The optimized parametric setting of the ESD process (f = 700 Hz, c = 270 μF, v = 150 mm/min) was obtained. MPEA coatings with a thickness of about 70 um, a coverage rate almost reaching 100%, and porosity as low as about 1% were prepared. The wear- and burn-resistance functions of the TiCrNiVSi0.1 ESD coatings were investigated. The wear rates of the coating at room temperature and 400 °C are one-sixth and one-fourth of the TC4 alloy, respectively. A TiCrNiVSi0.1 alloy coating was deposited and significantly improved the burn resistance of the TC4 alloy.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Surface Treatment and Coatings · Metal and Thin Film Mechanics · High Entropy Alloys Studies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, China
Beijing Key Laboratory for Corrosion Erosion and Surface Technology, Beijing 100083, China
Funding
National Natural Science Foundation of China · Central Universities
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