RT Conference Proceedings
T1 Design of alternative binders for hard materials
A1 Nicolás Morillas, María de
A1 Besharatloo, H.
A1 Alvaredo Olmos, Paula
A1 Roa, J. J.
A1 Llanes, L.
A1 Gordo Odériz, Elena
A2 Mari, Daniele
AB In the last years, a special interest has emerged towards the total or partial substitution of traditional cemented carbides composing elements. In this study, a systematic methodology is presented and used to design iron-based binders for WC and Ti(C,N) ceramic phases. First, metal alloy phase diagrams were simulated by means of Thermo-Calc® software, combining several alloying elements (Ni, Al, Cr, Mo and C) to fulfil the following criteria: provide high corrosion resistance, least number of phases present at room temperature and solidus-liquidus temperatures below 1500 °C. Two final compositions were chosen: Fe15Ni10Cr and Fe15Cr10Al. Next step was to validate the critical temperatures by means of differential thermal analysis tests and, finally, high-temperature wetting experiments were conducted to measure the contact angle between molten metal and ceramic phases. Resultant metal-ceramic region was studied by means of field emission scanning electron microscopy, energy dispersive X-ray spectroscopy and nanoindentation techniques. As a proof of concept, samples with 80 vol% of Ti(C,N) and WC ceramic phases were prepared for a basic characterization. Both ceramic reinforcements were compared, and the presented methodology could satisfactorily be validated as a design procedure of alternative binders for hard materials.
PB Elsevier
SN 0263-4368
YR 2020
FD 2020-02
LK https://hdl.handle.net/10016/33919
UL https://hdl.handle.net/10016/33919
LA eng
NO Proceeding of: 11th International Conference on the Science of Hard Materials (ICSHM11), Khao Lak, Thailand 25–29 March 2019.
NO The current study was supported by the Spanish Ministerio de Economía y Competitividad through the project MAT2015-70780-C4-P and grant BES-2016-077340, and the Regional Government of Madrid through the program ADITIMAT, ref. S2018/NMT-4411. The authors would like to acknowledge the contribution of M. Campos for setting up milling conditions. J. J. Roa acknowledges the Serra Hunter programme of the Generalitat de Catalunya.
DS e-Archivo
RD 18 jul. 2024