The catalytic effect of iron on the graphitization of diamonds
-
The objective of this work is to study the graphitization of diamonds due to the presence of iron. Composites of Fe-15 wt.% diamonds were processed by means of conventional powder metallurgy with the parameters of cold pressing at 350 MPa and sintering at 1100°C/360 min. The oxidative behavior of diamonds was analyzed using thermal analysis. The influence of sintering was analyzed through microstructural investigation by means of scanning electron microscopy and energy-dispersive X-ray spectroscopy. The absorption bands of the C–C bonds of the graphite and diamond structures were analyzed using infrared spectroscopy. The results show the intensity of graphitization in the presence of Fe, and that the temperature utilized in the experiments was appropriate.
References
[1] LuY., DongH.F., LiW.: Adv. Mater. Res.201-203 (2011) 1757–1762. 10.4028/www.scientific.net/AMR.201-203.1757Search in Google Scholar
[2] ZerenM., KaragözS.: Mater. Des.28 (2007) 1055–1058. 10.1016/j.matdes.2005.05.016Search in Google Scholar
[3] OliveiraH.C.P.: DSc Thesis, UENF, Brazil (2010).Search in Google Scholar
[4] BarbosaA.P., BrobovnitchiiG.S., SkuryA.L.D., GuimarãesR.S., FilgueiraM.: Mater. Des.31 (2010) 522–526. 10.1016/j.matdes.2009.07.027Search in Google Scholar
[5] OliveiraL.J., BrobovnitchiiG.S., FilgueiraM.: Int. J. Refract. Met. Hard Mater.25 (2007) 328–335. 10.1016/j.ijrmhm.2006.08.006Search in Google Scholar
[6] RosaM.C.G.: MSc Thesis, UENF, Brazil (2011). 10.1177/0725513610386100Search in Google Scholar
[7] HoweJ.Y.: Ph.D. Thesis, Alfred University, USA (2001).Search in Google Scholar
[8] BarbosaA.P.: MSc Thesis, UENF, Brazil (2008).Search in Google Scholar
[9] GavitoD.G.: Ph.D. Thesis, University of Tulsa, USA (1998).Search in Google Scholar
[10] DaviesG.: Nature290 (1981) 40–41. 10.1038/290040a0Search in Google Scholar
[11] LiH.S., QiY.X., GongJ.H., WangM., LiM.S.: Int. J. Refract. Met. Hard Mater.27 (2008) 564–570. 10.1016/j.ijrmhm.2008.07.015Search in Google Scholar
[12] MartinsM.S.: DSc Thesis, UFMG, Brazil (2006).Search in Google Scholar
[13] LinaresR., DoeringP.: Diamond Relat. Mater.8 (1998) 909–915. 10.1016/S0925-9635(98)00382-3Search in Google Scholar
[14] MisraA., TyagiP.K., SinghM.K., MisraD.R.: Diamond Relat. Mater.15 (2005) 385–388. 10.1016/j.diamond.2005.08.013Search in Google Scholar
[15] RizzoV.Z.: MSc Thesis, Escola Politécnica da USP, Brazil (2010).Search in Google Scholar
© 2013, Carl Hanser Verlag, München
Articles in the same Issue
- Contents
- Contents
- Original Contributions
- Thermomechanical treatments and surface treatments to enhance the mechanical properties and fatigue performance of recycled cp-Ti
- Development of an atomic mobility database for liquid phase in multicomponent Al alloys: focusing on binary systems
- Surface tension of a liquid metal–oxygen system using a multilayer free energy model
- The influence of microstructure and mechanical properties on the machinability of martensitic and bainitic prehardened mould steels
- Influence of the strain rate on deformation mechanisms of an AZ31 magnesium alloy
- Weldability and joining characteristics of AISI 420/AISI 1020 steels using friction welding
- Mechanism of porosity growth during homogenisation in single crystal nickel-based superalloys
- Analysis of thermal stability after occurrence of absolute solute trapping in undercooled Co–Cu alloy
- Phase constitutions of rapid solidification/powder metallurgy Mg–Zn–Ca–RE alloys
- The catalytic effect of iron on the graphitization of diamonds
- CBD grown ZnO nanostructures: effects of solution temperature
- DGM News
- DGM News
Articles in the same Issue
- Contents
- Contents
- Original Contributions
- Thermomechanical treatments and surface treatments to enhance the mechanical properties and fatigue performance of recycled cp-Ti
- Development of an atomic mobility database for liquid phase in multicomponent Al alloys: focusing on binary systems
- Surface tension of a liquid metal–oxygen system using a multilayer free energy model
- The influence of microstructure and mechanical properties on the machinability of martensitic and bainitic prehardened mould steels
- Influence of the strain rate on deformation mechanisms of an AZ31 magnesium alloy
- Weldability and joining characteristics of AISI 420/AISI 1020 steels using friction welding
- Mechanism of porosity growth during homogenisation in single crystal nickel-based superalloys
- Analysis of thermal stability after occurrence of absolute solute trapping in undercooled Co–Cu alloy
- Phase constitutions of rapid solidification/powder metallurgy Mg–Zn–Ca–RE alloys
- The catalytic effect of iron on the graphitization of diamonds
- CBD grown ZnO nanostructures: effects of solution temperature
- DGM News
- DGM News
