Characterization and wear performance of boride phases over tool steel substrates
| Autor: | Roger Lewis, Eduardo D Rivera Arreola, Jose Luis Bernal Ponce, Francisco Javier Perez Pinal, Armando Irvin Martínez Pérez, Martín Ortiz Domínguez, Edgar Ernesto Vera Cardenas |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Materials science
Scanning electron microscope Mechanical Engineering lcsh:Mechanical engineering and machinery Metallurgy Abrasive 02 engineering and technology Tribology engineering.material 021001 nanoscience & nanotechnology Cracking chemistry.chemical_compound 020303 mechanical engineering & transports 0203 mechanical engineering chemistry Indentation Boride Tool steel engineering lcsh:TJ1-1570 0210 nano-technology Boriding |
| Zdroj: | Advances in Mechanical Engineering, Vol 8 (2016) |
| ISSN: | 1687-8140 |
| Popis: | This research work was conducted to characterize boride phases, obtained from the powder-pack process, on AISI H13 and D2 steel substrates, and investigate their tribological behavior. The boriding was developed at a temperature of 1273 K with an exposure time of 8 h. X-ray diffraction, scanning electron microscopy, and energy-dispersive X-ray spectroscopy were conducted on the borided material to characterize the presence of the FeB, Fe2B, and CrB phases and the distribution of heavy elements on the surface of the substrates. The adherence of the boride layers was evaluated, in a qualitative form, through the Daimler-Benz Rockwell-C indentation technique. Sliding wear tests were then performed using a reciprocating wear test machine. All tests were conducted in dry conditions at room temperature. A frequency of 10 Hz and 15-mm sliding distance were used. The applied Hertzian pressure was 2.01 GPa. Scanning electron microscopy was used to observe and analyze the wear mechanisms. Additionally, the variation of the friction coefficient versus the number of cycles was obtained. Experimental results showed that the characteristic wear mechanism for the borided surface was plastic deformation and mild abrasive wear; for unborided substrates, cracking and spalling were observed. |
| Databáze: | OpenAIRE |
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