{"id":114493,"date":"2022-02-07T21:07:17","date_gmt":"2022-02-07T20:07:17","guid":{"rendered":"https:\/\/material-properties.org\/scandium-et-yttrium-comparaison-proprietes\/"},"modified":"2022-03-24T14:13:25","modified_gmt":"2022-03-24T13:13:25","slug":"scandium-et-yttrium-comparaison-proprietes","status":"publish","type":"post","link":"https:\/\/material-properties.org\/fr\/scandium-et-yttrium-comparaison-proprietes\/","title":{"rendered":"Scandium et Yttrium – Comparaison – Propri\u00e9t\u00e9s"},"content":{"rendered":"

Cet article contient une comparaison des principales propri\u00e9t\u00e9s thermiques et atomiques du scandium et de l’yttrium, deux \u00e9l\u00e9ments chimiques comparables du tableau p\u00e9riodique.\u00a0Il contient \u00e9galement des descriptions de base et des applications des deux \u00e9l\u00e9ments.\u00a0Scandium contre Yttrium.<\/span><\/em><\/p>\n

\"scandium<\/p>\n

\n

<\/span>Comparer le scandium avec un autre \u00e9l\u00e9ment<\/div>
<\/div><\/div><\/span>
\n
<\/div><\/span><\/p>\n

\"Aluminium<\/a><\/p>\n

\"Yttrium<\/a><\/p>\n

<\/span><\/p><\/div><\/div>\n

<\/span><\/p><\/span><\/p>\n

\n

<\/span>Comparer l'yttrium avec un autre \u00e9l\u00e9ment<\/div>
<\/div><\/div><\/span>
\n
<\/div><\/span><\/p>\n

\"Aluminium<\/a><\/p>\n

\"Ytterbium<\/a><\/p>\n

<\/span><\/p><\/div><\/div>\n

<\/span><\/p><\/span><\/p>\n

<\/div><\/span><\/p>\n

<\/span><\/p>\n

Scandium et Yttrium – \u00c0 propos des \u00e9l\u00e9ments<\/span><\/h2>\n

<\/div><\/div><\/span><\/p>\n


\n
\"\"<\/div>
<\/div><\/div><\/span>\n

Scandium<\/span><\/h3>\n

Le scandium est un \u00e9l\u00e9ment de bloc d m\u00e9tallique blanc argent\u00e9, il a \u00e9t\u00e9 historiquement parfois class\u00e9 comme un \u00e9l\u00e9ment de terre rare, avec l’yttrium et les lanthanides.<\/span>
\n<\/span><\/p><\/div>

<\/div><\/div>
\n<\/span><\/span><\/p>\n


\n
\"\"<\/div>
<\/div><\/div><\/span>\n

Yttrium<\/span><\/h3>\n

L’yttrium est un m\u00e9tal de transition argent\u00e9-m\u00e9tallique chimiquement similaire aux lanthanides et a souvent \u00e9t\u00e9 class\u00e9 comme un \u00ab\u00e9l\u00e9ment de terre rare\u00bb.<\/span><\/p>\n

<\/span><\/p><\/div>

<\/div><\/div>
\n<\/span><\/span><\/p>\n

<\/div><\/span><\/p>\n

\n

\"Scandium<\/p>\n

<\/span><\/p><\/div><\/div><\/span><\/p>\n

\n

\"Yttrium<\/p>\n

<\/span><\/p><\/div><\/div><\/span><\/p>\n

Source : www.luciteria.com<\/span><\/p>\n

<\/div><\/span><\/p>\n

<\/span><\/p>\n

Scandium et Yttrium – Applications<\/span><\/h2>\n

<\/div><\/div><\/span><\/p>\n

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<\/div><\/div><\/span>
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<\/div><\/div><\/span><\/p>\n

Scandium<\/span><\/a><\/h3>\n

La principale application du scandium en poids est dans les alliages aluminium-scandium pour les composants mineurs de l’industrie a\u00e9rospatiale.\u00a0Ces alliages contiennent entre 0,1% et 0,5% de scandium.\u00a0Sc am\u00e9liore consid\u00e9rablement les alliages d’aluminium, augmentant la r\u00e9sistance, la r\u00e9sistance \u00e0 la corrosion et la soudabilit\u00e9.<\/span><\/p>\n

<\/span><\/p><\/div><\/div>
\n<\/span>\n

<\/span><\/p><\/span><\/p>\n


\n
<\/div><\/div><\/span>
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Yttrium<\/span><\/a><\/h3>\n

Les utilisations les plus importantes de l’yttrium sont les LED et les luminophores, en particulier les luminophores rouges dans les \u00e9crans \u00e0 tube cathodique des t\u00e9l\u00e9viseurs.\u00a0L’yttrium est \u00e9galement utilis\u00e9 dans la production d’\u00e9lectrodes, d’\u00e9lectrolytes, de filtres \u00e9lectroniques, de lasers, de supraconducteurs, de diverses applications m\u00e9dicales et dans le tra\u00e7age de divers mat\u00e9riaux pour am\u00e9liorer leurs propri\u00e9t\u00e9s.\u00a0De petites quantit\u00e9s d’yttrium (0,1 \u00e0 0,2 %) ont \u00e9t\u00e9 utilis\u00e9es pour r\u00e9duire la taille des grains de chrome, de molybd\u00e8ne, de titane et de zirconium.\u00a0L’yttrium est utilis\u00e9 pour augmenter la r\u00e9sistance des alliages d’aluminium et de magn\u00e9sium.<\/span><\/p>\n

<\/span><\/p><\/div><\/div>
\n<\/span>\n

<\/span><\/p><\/span><\/p>\n

<\/span><\/p>\n

Scandium et Yttrium – Comparaison dans le tableau<\/span><\/h2>\n

<\/div><\/div><\/span><\/p>\n

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\u00c9l\u00e9ment<\/span><\/td>\nScandium<\/span><\/b><\/td>\nYttrium<\/span><\/b><\/td>\n<\/tr>\n
Densit\u00e9<\/span><\/td>\n2,985 g\/cm3<\/span><\/strong><\/td>\n4,472 g\/cm3<\/span><\/strong><\/td>\n<\/tr>\n
R\u00e9sistance \u00e0 la traction ultime<\/span><\/td>\n200 MPa<\/span><\/strong><\/td>\n115 MPa<\/span><\/strong><\/td>\n<\/tr>\n
Limite d’\u00e9lasticit\u00e9<\/span><\/td>\nN \/ A<\/span><\/strong><\/td>\n50 MPa<\/span><\/strong><\/td>\n<\/tr>\n
Module d’\u00e9lasticit\u00e9 de Young<\/span><\/td>\n74,4 GPa<\/span><\/strong><\/td>\n63,5 GPa<\/span><\/strong><\/td>\n<\/tr>\n
\u00c9chelle de Mohs<\/span><\/td>\nN \/ A<\/span><\/strong><\/td>\nN \/ A<\/span><\/strong><\/td>\n<\/tr>\n
Duret\u00e9 Brinell<\/span><\/td>\n740 – 1200 MPa<\/span><\/strong><\/td>\n580 MPa<\/span><\/strong><\/td>\n<\/tr>\n
Duret\u00e9 Vickers<\/span><\/td>\nN \/ A<\/span><\/strong><\/td>\nN \/ A<\/span><\/strong><\/td>\n<\/tr>\n
Point de fusion<\/span><\/td>\n1541\u00b0C<\/span><\/strong><\/td>\n1526\u00b0C<\/span><\/strong><\/td>\n<\/tr>\n
Point d’\u00e9bullition<\/span><\/td>\n2830\u00b0C<\/span><\/strong><\/td>\n2930\u00b0C<\/span><\/strong><\/td>\n<\/tr>\n
Conductivit\u00e9 thermique<\/span><\/td>\n15,8 W\/mK<\/span><\/strong><\/td>\n17,2 W\/mK<\/span><\/strong><\/td>\n<\/tr>\n
Coefficient de dilatation thermique<\/span><\/td>\n10,2 \u00b5m\/mK<\/span><\/strong><\/td>\n10,6 \u00b5m\/mK<\/span><\/strong><\/td>\n<\/tr>\n
Chaleur sp\u00e9cifique<\/span><\/td>\n0,6 J\/g\u00b7K<\/span><\/span><\/strong><\/td>\n0,3 J\/g\u00b7K<\/span><\/strong><\/td>\n<\/tr>\n
Temp\u00e9rature de fusion<\/span><\/td>\n14,1 kJ\/mole<\/span><\/strong><\/td>\n11,4 kJ\/mole<\/span><\/strong><\/td>\n<\/tr>\n
Chaleur de vaporisation<\/span><\/td>\n314,2 kJ\/mole<\/span><\/span><\/strong><\/td>\n363 kJ\/mole<\/span><\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/span><\/p><\/div><\/div><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

Cet article contient une comparaison des principales propri\u00e9t\u00e9s thermiques et atomiques du scandium et de l’yttrium, deux \u00e9l\u00e9ments chimiques comparables du tableau p\u00e9riodique.\u00a0Il contient \u00e9galement des descriptions de base et des applications des deux \u00e9l\u00e9ments.\u00a0Scandium contre Yttrium. Source : www.luciteria.com<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"yoast_head":"\nScandium et Yttrium - Comparaison - Propri\u00e9t\u00e9s - Material Properties<\/title>\n<meta name=\"description\" content=\"Cet article contient une comparaison des principales propri\u00e9t\u00e9s thermiques et atomiques du scandium et de l'yttrium, deux \u00e9l\u00e9ments chimiques comparables du tableau p\u00e9riodique. 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