resumo
The feasibility of densifying TiCN at a much lower temperature than currently by using transient liquid-phase assisted spark plasma sintering (SPS) with Si aids is demonstrated. Firstly, it is shown that TiCN can be fully densified by SPS at 1400 degrees C with only 5 vol% Si aids, a temperature at which TiCN hardly densifies at all, resulting in novel superhard (similar to 21.5 GPa) ceramic composites having fine-grained (<1
palavras-chave
DENSIFICATION MECHANISM; 2-PHASE CERAMICS; TOUGHNESS CURVES; BEHAVIOR; MODEL; SOLUBILITY; CERMETS; BINDER; FIELD
categoria
Materials Science
autores
Ojalvo, C; Mineiro, R; Fernandes, CM; Senos, AMR; Ortiz, AL
nossos autores
Ana Maria de Oliveira e Rocha Senos
Colaborador
Cristina Maria da Silva Fernandes
ColaboradorGrupos
G2 - Materiais Fotónicos, Eletrónicos e Magnéticos
G3 - Materiais Eletroquímicos, Interfaces e Revestimentos
agradecimentos
The authors acknowledge the financial support provided by la Junta de Extremadura under Grants nos. IB20017 and GR21170 as well as COMPETE, Programa Operacional Factores de Competividade, 3D Compcer (POCI-01-0247-FEDER-047060), all co-financed with FEDER Funds. This work was also developed within the scope of the project CICECO-Aveiro Institute of Materials, UIDB/50011/2020, UIDP/ 50011/2020 & LA/P/0lingu006/2020, financed by Portugal national funds through the FCT/MCTES (PIDDAC). Cristina Ojalvo acknowledges support from the Spanish Ministry of Universities through the programme "Margarita Salas para la formacion de jovenes doctores", co- funded by the European Union