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Thermally coupled SHS processes in layered (Fe_2O_3 + 2Al)/(Ti + Al)/(Fe_2O_3 + 2Al) structures: An experimental study

机译:(Fe_2O_3 + 2Al)/(Ti + Al)/(Fe_2O_3 + 2Al)层状结构中的热耦合SHS工艺:实验研究

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TiAl intermetallic was prepared through thermal coupling of highly exothermic Fe2O3-Al reaction (donor) and low-caloric Ti-Al reaction (acceptor). Green compacts represented three-layer 'donor-acceptor-donor' sandwich-type structures. The combustion process was video taped and combustion temperatures in the bulk of donor and acceptor layers and at the interfaces were monitored with a set of thermocouples. The results of video filming and thermocouple measurements allowed us to establish which mode of thermally coupled SHS reaction took place in our conditions. The combustion product was found to contain the TiAl intermetallic with small admixture of Ti3Al and unreacted Al. (C) 2019 Published by Elsevier Inc. on behalf of The Combustion Institute.
机译:TiAl金属间化合物是通过高放热的Fe2O3-Al反应(供体)和低热量的Ti-Al反应(受体)的热偶合制备的。生坯代表了三层“供体-受体-供体”夹心式结构。用录像带记录了燃烧过程,并用一组热电偶监测了大部分供体和受体层以及界面处的燃烧温度。视频拍摄和热电偶测量的结果使我们能够确定在我们的条件下发生了哪种热耦合SHS反应模式。发现燃烧产物含有TiAl金属间化合物以及少量的Ti3Al和未反应的Al的混合物。 (C)2019由Elsevier Inc.代表燃烧研究所出版。

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