Influence of carbon content on the sinterability of an FeCr matrix cermet reinforced with TiCN

被引：30
作者：
Alvaredo, P. [1 ]
Tsipas, S. A. [1 ]
Gordo, E. [1 ]
机构：
[1] Univ Carlos III Madrid, Leganes 28911, Spain
来源：
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS | 2013年 / 36卷
关键词：
Cermet; TiCN; Iron matrix; Differential thermal analysis; Thermocalc; MECHANICAL-PROPERTIES; MICROSTRUCTURE; (TI;
D O I：
10.1016/j.ijrmhm.2012.10.007
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The influence of carbon content on an iron-chromium cermet composite reinforced with Ti(C,N) (50 vol.%) has been studied. A thermodynamic simulation was performed using the ThermoCalc software to calculate the phase diagram of the composite. The results were validated by a thermal study performed using differential thermal analysis (DTA), and cermet samples with C percentages between 0 and 1 wt.% added to the steel matrix were prepared using a conventional powder metallurgy process. The sintered samples were characterised by measurements of density and hardness, microstructural analysis using scanning electron microscopy (SEM), microanalyses using energy dispersive X ray spectroscopy (EDX) and X-ray diffraction (XRD). The results obtained show a significant influence of the C percentage on the solidus temperature, which influences sintering behaviour, leading to changes in the Ti(C,N) particles' shape and composition, due to changes in the stoichiometry of the Ti(C,N). This influence is reflected in the cermet microstructure and hardness. The results are discussed with reference to the DTA and thermodynamic studies. (C) 2012 Elsevier Ltd. All rights reserved.
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页码：283 / 288
页数：6
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