Publication:
FGM Stainless steel-Ti(CN) cermets through colloidal processing

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Abstract
In this work, the colloidal approach was used to promote a gradation in the composition of a cermet, based on the mixture of stainless steel and Ti(C,N) during powder consolidation into a bulk part. The colloidal processing ofnon-oxides in aqueous media requires an elevated control over the evolution of the surface chemistry of the powders, in order to obtain stable and high concentrated slurries of the mixture of metal/non-oxide ceramic. The advantage of those methods lies on the fabrication of complex micro-architectures where the second phases are intimately and homogeneously dispersed in the microstructure of the composite. Moreover, those techniquesallow the processing of fine particles with low compressibility and flowability which difficult conventional powder metallurgical processing. The results shown in this work evidence the feasibility of obtaining continuous functionally graded materials (FGM) through slip casting in porous molds, as well as the relevance of the rheological properties of the composite slurries on the final characteristics of the material.
Description
This proceeding at: 10th International Conference on the Science of Hard Materials (ICSHM10), took place in Cancún (méxico), in 2015, March, 10-14
Keywords
Ti(C,N), Cermet, Colloidal processing, Functionally gradient material, Steel, Hardmetals, Diamond, Ceramics, Coatings
Bibliographic citation
J.A. Escribano, J.L. García, P. Alvaredo, B. Ferrari, E. Gordo and A.J. Sánchez-Herencia (2015). FGM Stainless steel-Ti(C,N) cermets through colloidal processing. In International Journal of Refractory Metals and Hard Materials, Volume: 49, Issue: March, Pages: 143-152