Effect of network size on mechanical properties and wear resistance of titanium/nanodiamonds nanocomposites with network architecture
| Autor: | Caiyun Shang, Tengfei Liu, Faming Zhang, Feng Chen |
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| Rok vydání: | 2020 |
| Předmět: |
Nanocomposite
Materials science Polymers and Plastics Spark plasma sintering chemistry.chemical_element 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Microstructure 01 natural sciences 0104 chemical sciences Compressive strength chemistry Mechanics of Materials Ultimate tensile strength Materials Chemistry Ceramics and Composites Particle size Composite material 0210 nano-technology Ductility Titanium |
| Zdroj: | Composites Communications. 19:74-81 |
| ISSN: | 2452-2139 |
| Popis: | The Ti/nanodiamonds (NDs) composites with various network size were fabricated by spark plasma sintering (SPS) technique. The microstructure, mechanical properties and wear resistance of the nanocomposites were investigated. Experimental results showed that all the Ti/NDs nanocomposites exhibited pure α-Ti with in-situ formed nano-TiC and residual NDs phases. Hardness and compressive yield strength for the nanocomposites showed great enhancement compared to that of pure Ti while without much variation among different network size. Higher tensile yield strength and acceptable ductility were achieved for the composites; however, the ductility presented an increasing trend (from 8% to 33%) with decrease of the network size. The friction coefficient and wear weight loss of the nanocomposite were lower than that of the pure Ti and the wear resistance was improved with decreasing network size. The excellent integrated properties for the Ti/NDs nanocomposites with smaller network size (matrix particle size of 15–-53 μm) are resulted from a combination of quasi-continuous network microstructure, TiC and residual ND reinforcements strengthening and network interface strengthening. |
| Databáze: | OpenAIRE |
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