Properties and tribological performance of ceramic-base chromium and vanadium carbide composite coatings
| Autor: | Ali Günen, Piers Milner, Mustafa Sabri Gök, Bülent Kurt |
|---|---|
| Přispěvatelé: | Mühendislik ve Doğa Bilimleri Fakültesi -- Metalurji ve Malzeme Mühendisliği Bölümü, Günen, Ali |
| Rok vydání: | 2019 |
| Předmět: |
Coefficient of friction
Vanadium carbide Tribology Particle 02 engineering and technology Iron compounds Carbide Coating Diffusion chemistry.chemical_compound Wear Die steel Thermo-reactive deposition Surface properties Surface roughness Diffusion coatings Composite material Microstructure Wear behavior Friction coefficients Multidisciplinary Treatment conditions General Medicine Tribological performance 0205 materials engineering Mechanism Carbides Coating temperature Chromium carbide Materials science Friction Materials Science Tool steel Chromium compounds Vanadium chemistry.chemical_element High-temperature engineering.material Indentation hardness Mechanical characteristics Hardness Coatings 020502 materials Average surface roughness Composite coatings Binary alloys Niobium Carbides | Salt Baths | Tool Steel Kinetics chemistry Steel Pack-cementation method engineering Metallurgy & Metallurgical Engineering Coefficient of frictions |
| Zdroj: | INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS |
| Popis: | WOS: 000465193500040 In the current study, the surface of AISI D2 steel was coated with the powder blends of ferro-vanadium (Fe-V) and ferro-chromium (Fe-Cr). The coatings were performed using a thermo-reactive diffusion (TRD) treatment by the pack cementation method at three different temperatures (900 degrees C, 1000 degrees C, and 1100 degrees C) and three different durations (1 h, 2 h, and 3 h). The structural and mechanical characteristics of the coatings were compared between the treatment groups. For this aim, the types of the formed phases, the microstructure, the microhardness, the surface roughness, and the wear and friction performance of the coated samples were examined. XRD analysis found composite carbide coatings including chromium carbide (Cr-C), vanadium carbide (V-C), and chromium vanadium carbide (Cr-V-C). The coatings' thickness was 11.3-23.2 mu m, hardness was 2100-2500 HV, and average surface roughness (R-a) was 0.286-0.550 mu m, depending on the treatment condition. The vanadium containing phase contents of the coatings increased with the elevating coating temperatures. The formed composite coating layers caused a change in the appearance of wear track and wear mechanism on the material surface. After the coating process, there found to be a decrease in the friction coefficient as well as an improvement in the wear resistance up to 7 times. In the composite coating layers, the increase in V-C content in comparison to Cr-C led to an enhancement in wear resistance on the material surface. |
| Databáze: | OpenAIRE |
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