کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1611018 1516291 2014 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Thermodynamic predictions for the manufacture of Ti2AlC MAX-phase ceramic by combustion synthesis
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Thermodynamic predictions for the manufacture of Ti2AlC MAX-phase ceramic by combustion synthesis
چکیده انگلیسی

This paper presents an analysis of the SHS reaction for the manufacture of Ti2AlC MAX phase materials using self-propagating high-temperature synthesis (SHS). Enthalpy-temperature calculations are presented for the reaction 2Ti + (1 + y)Al + C → Ti2AlC + yAl. The analysis and data presented allows the determination of the adiabatic combustion temperature as a function of a variety of conditions including (i) reactant pre-heating to increase the combustion temperature or (ii) the addition of excess aluminium as a diluent to reduce the combustion temperature. As excess Al is added as a diluent, there is a decrease in Tad but it offers the potential to control the exothermicity of the SHS process and to form metal–ceramic composites. The range of criteria used for the determination of the appropriate combustion condition for SHS, such as Tad ⩾ 1800 K and -ΔHr298K/Cp298K≥2000K, are shown to be applicable for Ti2AlC MAX phase ceramics. The data presented is of use to those considering the manufacture of novel MAX phase ceramics by SHS.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 602, 25 July 2014, Pages 72–77
نویسندگان
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