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International Journal of Energetic Materials and Chemical Propulsion

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ISSN Druckformat: 2150-766X

ISSN Online: 2150-7678

The Impact Factor measures the average number of citations received in a particular year by papers published in the journal during the two preceding years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) IF: 0.7 To calculate the five year Impact Factor, citations are counted in 2017 to the previous five years and divided by the source items published in the previous five years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) 5-Year IF: 0.7 The Immediacy Index is the average number of times an article is cited in the year it is published. The journal Immediacy Index indicates how quickly articles in a journal are cited. Immediacy Index: 0.1 The Eigenfactor score, developed by Jevin West and Carl Bergstrom at the University of Washington, is a rating of the total importance of a scientific journal. Journals are rated according to the number of incoming citations, with citations from highly ranked journals weighted to make a larger contribution to the eigenfactor than those from poorly ranked journals. Eigenfactor: 0.00016 The Journal Citation Indicator (JCI) is a single measurement of the field-normalized citation impact of journals in the Web of Science Core Collection across disciplines. The key words here are that the metric is normalized and cross-disciplinary. JCI: 0.18 SJR: 0.313 SNIP: 0.6 CiteScore™:: 1.6 H-Index: 16

Indexed in

COMBUSTION SYNTHESIS OF ADVANCED CERAMICS, INTERMETALLICS, AND COMPOSITES

Volumen 10, Ausgabe 5, 2011, pp. 365-395
DOI: 10.1615/IntJEnergeticMaterialsChemProp.2012005227
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ABSTRAKT

Self-propagating high-temperature synthesis (SHS) takes advantage of the self-sustaining merit from highly exothermic reactions and has the potential of energy and time savings. This study adopts TiC as an additive to enhance the combustion synthesis of Ti3AlC2 and Ti2AlC; incorporates the thermite reaction into the SHS process for the formation of Nb3Al, Nb2Al, and NbAl3; and utilizes boron nitride (BN) as the solid source of nitrogen to facilitate the production of TiB2−TiN composites. The addition of TiC into the Ti/Al/C compacts caused a decrease in combustion temperature and flame-front velocity. However, the yield of Ti3AlC2 was enhanced by adopting TiC in the reactant mixture. The product with optimal compositions of 84.6% Ti3AlC2, 9.8% TiC, and 5.6% Ti2AlC by weight was obtained from the 20 mol%TiC-added sample. For the Ti2AlC formation, the 14.3 mol% TiC-added sample showed an increase in the production of Ti2AlC up to 90 wt%. Preparation of niobium aluminides was achieved by the thermite-based SHS process from the powder compacts with a molar ratio of Al/Nb2O5 = 4.0−6.67. Due to a decrease in the reaction exothermicity, the flame velocity and combustion temperature were declined by increasing Al in the reactant mixture. Nb3Al and Nb2Al were obtained from the samples of Al:Nb2O5 = 12:3 and 13:3, respectively. Nb2Al−NbAl3 composites were produced from the samples with Al/Nb2O5 between 5.0 and 6.67. With the use of TiN as a diluent and BN as a reactant, TiN−TiB2 composites with the TiB2 content from 12.5 to 25 mol% were produced at 0.62−1.14 MPa of nitrogen. The TiN−33.3 mol% TiB2 composite was synthesized from the 1.5Ti + BN sample in Ar.

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