{"id":3325,"date":"2020-09-09T20:50:13","date_gmt":"2020-09-09T18:50:13","guid":{"rendered":"https:\/\/mim.agh.edu.pl\/?page_id=3325"},"modified":"2023-07-13T15:05:11","modified_gmt":"2023-07-13T13:05:11","slug":"multiphysics-modelling-shs","status":"publish","type":"page","link":"https:\/\/mim.agh.edu.pl\/?page_id=3325","title":{"rendered":"Multiphysics Modelling – SHS"},"content":{"rendered":"\t\t
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Multiphysics Modelling - SHS Process Optimization<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Introduction.<\/strong>\u00a0Self-propagating high-temperature synthesis (SHS) was developed in the late 1960s<\/span>\u00a0and has been used to synthesize many ceramic materials including oxides, nitrides, carbides, and metal hydrides<\/span>. In an SHS process, finely powdered reactants are pressed into a pellet and ignited on one side by an external heat source. After the ignition, the heat source is turned off because the SHS reaction is highly exothermic. The heat generated from the combustion is suf\ufb01cient to sustain the reaction front to propagate through the pellet and convert reactants to products (<\/span>Fig. 1<\/span><\/span>). The fast combustion front movement (1\u201310 cm<\/span>\u00d7<\/span>s-1<\/sup>) enables a large-scale production in a short period of time. Fast cooling allows the formation of ceramic powders with very \ufb01ne grains and metastable compounds.\u00a0<\/span>\u00a0<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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Fig. 1. SHS process phases: ignition, propagation of the reaction front, and cooling [J.Selig, Model of Combustion Synthesis of Thermoelectric Calcium Cobaltates, Comsol Conference, Boston, 2010].<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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Mathematical model.<\/strong> The heat, momentum and mass transfers are taken into account to model the self-propagating high-temperature synthesis process. The model was formulated for an arbitrary 3D system geometry. Here for better visualization we consider an example 2D geometry presented in Fig. 2. The example geometry consists of a pellet \u00a03 cm in length and 2 cm in width placed on alumina holder \u00a0of 0.4 cm in thickness. The reaction system is placed inside the reaction chamber \u00a0filled with argon.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Fig. 2. Schematic graph of experimental setup used in modelling of SHS process.<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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Cooperation<\/b>. Project realized in cooperation with Department of Inorganic Chemistry at the Faculty of Materials Science and Ceramics AGH-University of Krakow.<\/p>\n

Research papers:<\/strong><\/p>\n

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  1. R. Filipek, “Modeling and inverse methods in materials engineering\u201d \u2013 monograph, Wydawnictwo Naukowe \u201cAkapit\u201d, Krak\u00f3w 2019.<\/li>\n<\/ol>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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    Contact<\/strong>:\u00a0Prof. Robert Filipek<\/a><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"

    Multiphysics Modelling – SHS Process Optimization Introduction.\u00a0Self-propagating high-temperature synthesis (SHS) was developed in the late 1960s\u00a0and has been used to synthesize many ceramic materials including oxides, nitrides, carbides, and metal hydrides. In an SHS process, finely powdered reactants are pressed into a pellet and ignited on one side by an external heat source. After the […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-3325","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/mim.agh.edu.pl\/index.php?rest_route=\/wp\/v2\/pages\/3325","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mim.agh.edu.pl\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/mim.agh.edu.pl\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/mim.agh.edu.pl\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mim.agh.edu.pl\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3325"}],"version-history":[{"count":15,"href":"https:\/\/mim.agh.edu.pl\/index.php?rest_route=\/wp\/v2\/pages\/3325\/revisions"}],"predecessor-version":[{"id":4280,"href":"https:\/\/mim.agh.edu.pl\/index.php?rest_route=\/wp\/v2\/pages\/3325\/revisions\/4280"}],"wp:attachment":[{"href":"https:\/\/mim.agh.edu.pl\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3325"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}