{"id":114409,"date":"2022-02-05T07:07:51","date_gmt":"2022-02-05T06:07:51","guid":{"rendered":"https:\/\/material-properties.org\/tungstene-et-rhenium-comparaison-proprietes\/"},"modified":"2022-03-22T13:25:09","modified_gmt":"2022-03-22T12:25:09","slug":"tungstene-et-rhenium-comparaison-proprietes","status":"publish","type":"post","link":"https:\/\/material-properties.org\/fr\/tungstene-et-rhenium-comparaison-proprietes\/","title":{"rendered":"Tungst\u00e8ne et Rh\u00e9nium – Comparaison – Propri\u00e9t\u00e9s"},"content":{"rendered":"

Cet article contient une comparaison des principales propri\u00e9t\u00e9s thermiques et atomiques du tungst\u00e8ne et du rh\u00e9nium, deux \u00e9l\u00e9ments chimiques comparables du tableau p\u00e9riodique.\u00a0Il contient \u00e9galement des descriptions de base et des applications des deux \u00e9l\u00e9ments.\u00a0Tungst\u00e8ne contre Rh\u00e9nium.<\/em><\/p>\n

\"tungst\u00e8ne<\/p>\n

\n
<\/span>Comparer le tungst\u00e8ne avec un autre \u00e9l\u00e9ment<\/div>
\n
<\/div>\n

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

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

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

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

\"Molybd\u00e8ne<\/a><\/p>\n

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

\"Rh\u00e9nium<\/a><\/p>\n

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

\"Iridium<\/a><\/p>\n<\/div><\/div>\n<\/div><\/div>\n

\n
<\/span>Comparer le rh\u00e9nium avec un autre \u00e9l\u00e9ment<\/div>
\n
<\/div>\n

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

\"Tungst\u00e8ne<\/a><\/p>\n<\/div><\/div>\n<\/div><\/div>\n

<\/div>\n
\n

Tugsten et Rh\u00e9nium – \u00c0 propos des \u00e9l\u00e9ments<\/h2>\n<\/div><\/div>\n
\n
\"\"<\/div>
\n

Tungst\u00e8ne<\/h3>\n

Le tungst\u00e8ne est un m\u00e9tal rare pr\u00e9sent naturellement sur Terre presque exclusivement dans des compos\u00e9s chimiques.\u00a0Le tungst\u00e8ne est un mat\u00e9riau intrins\u00e8quement cassant et dur, ce qui le rend difficile \u00e0 travailler.<\/p>\n<\/div>

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

Rh\u00e9nium<\/h3>\n

Le rh\u00e9nium est un m\u00e9tal de transition blanc argent\u00e9, lourd, de troisi\u00e8me rang\u00e9e du groupe 7 du tableau p\u00e9riodique.<\/p>\n<\/div>

<\/div><\/div>\n<\/div><\/div>\n
<\/div>\n
\n

\"Tungst\u00e8ne<\/p>\n<\/div><\/div>\n

\n

\"Rh\u00e9nium<\/p>\n

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

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

<\/div>\n
\n

Tungst\u00e8ne et Rh\u00e9nium – Applications<\/h2>\n<\/div><\/div>\n
\n
\n
\n

Tungst\u00e8ne<\/a><\/h3>\n

Le tungst\u00e8ne est un m\u00e9tal largement utilis\u00e9.\u00a0Environ la moiti\u00e9 du tungst\u00e8ne est consomm\u00e9e pour la production de mat\u00e9riaux durs – \u00e0 savoir le carbure de tungst\u00e8ne – le reste \u00e9tant principalement utilis\u00e9 dans les alliages et les aciers.\u00a0L’exploitation mini\u00e8re et le traitement des min\u00e9raux exigent des machines et des composants r\u00e9sistants \u00e0 l’usure, car les \u00e9nergies et les masses des corps en interaction sont importantes.\u00a0Pour cela, les mat\u00e9riaux les plus r\u00e9sistants \u00e0 l’usure doivent \u00eatre utilis\u00e9s.\u00a0Par exemple, le carbure de tungst\u00e8ne est largement utilis\u00e9 dans l’exploitation mini\u00e8re dans les tr\u00e9pans de forage \u00e0 marteau sup\u00e9rieur, les marteaux de fond de trou, les couteaux \u00e0 rouleaux, les burins de charrue \u00e0 longue paroi, les pics de cisaillement \u00e0 longue paroi, les al\u00e9soirs de forage ascendant et les tunneliers.\u00a0Les 40 % restants sont g\u00e9n\u00e9ralement utilis\u00e9s pour fabriquer divers alliages et aciers sp\u00e9ciaux, des \u00e9lectrodes, des filaments, des fils, ainsi que divers composants pour des applications \u00e9lectriques, \u00e9lectroniques, de chauffage, d’\u00e9clairage et de soudage.<\/p>\n<\/div><\/div>\n<\/div><\/div>\n<\/div><\/div>\n

\n
\n
\n

Rh\u00e9nium<\/a><\/h3>\n

Plus de 80 % de l’utilisation mondiale de rh\u00e9nium est dans les superalliages \u00e0 haute temp\u00e9rature pour les applications a\u00e9ronautiques telles que les aubes de turbine et les pi\u00e8ces de moteur.\u00a0Ces alliages contiennent jusqu’\u00e0 6% de rh\u00e9nium, ce qui fait de la construction de moteurs \u00e0 r\u00e9action la plus grande utilisation unique de l’\u00e9l\u00e9ment.\u00a0Le rh\u00e9nium est ajout\u00e9 aux superalliages \u00e0 base de nickel pour am\u00e9liorer la r\u00e9sistance au fluage des alliages.\u00a0La demande restante provient principalement des industries p\u00e9trochimiques de raffinage.\u00a0Les catalyseurs platine-rh\u00e9nium qui sont principalement utilis\u00e9s dans l’essence sans plomb \u00e0 indice d’octane \u00e9lev\u00e9 sont une autre application majeure du rh\u00e9nium.<\/p>\n<\/div><\/div>\n<\/div><\/div>\n<\/div><\/div>\n

\n

Tungst\u00e8ne et Rh\u00e9nium – Comparaison dans le tableau<\/h2>\n<\/div><\/div>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\u00c9l\u00e9ment<\/td>\nTungst\u00e8ne<\/b><\/td>\nRh\u00e9nium<\/b><\/td>\n<\/tr>\n
Densit\u00e9<\/td>\n19,25 g\/cm3<\/strong><\/td>\n21,02 g\/cm3<\/strong><\/td>\n<\/tr>\n
R\u00e9sistance \u00e0 la traction ultime<\/td>\n980 MPa<\/strong><\/td>\n1070 MPa<\/strong><\/td>\n<\/tr>\n
Limite d’\u00e9lasticit\u00e9<\/td>\n750 MPa<\/strong><\/td>\n290 MPa<\/strong><\/td>\n<\/tr>\n
Module de Young<\/td>\n411 GPa<\/strong><\/td>\n463 GPa<\/strong><\/td>\n<\/tr>\n
\u00c9chelle de Mohs<\/td>\n7,5<\/strong><\/td>\n7<\/strong><\/td>\n<\/tr>\n
Duret\u00e9 Brinell<\/td>\n3000 MPa<\/strong><\/td>\n1400 MPa<\/strong><\/td>\n<\/tr>\n
Duret\u00e9 Vickers<\/td>\n3500 MPa<\/strong><\/td>\n2500 MPa<\/strong><\/td>\n<\/tr>\n
Point de fusion<\/td>\n3410\u00b0C<\/strong><\/td>\n3180\u00b0C<\/strong><\/td>\n<\/tr>\n
Point d’\u00e9bullition<\/td>\n59300\u00b0C<\/strong><\/td>\n5600\u00b0C<\/strong><\/td>\n<\/tr>\n
Conductivit\u00e9 thermique<\/td>\n170W\/mK<\/strong><\/td>\n48W\/mK<\/strong><\/td>\n<\/tr>\n
Coefficient de dilatation thermique<\/td>\n4,5 \u00b5m\/mK<\/strong><\/td>\n6,2 \u00b5m\/mK<\/strong><\/td>\n<\/tr>\n
Chaleur sp\u00e9cifique<\/td>\n0,13 J\/g\u00b7K<\/span><\/strong><\/td>\n0,13 J\/g\u00b7K<\/strong><\/td>\n<\/tr>\n
Temp\u00e9rature de fusion<\/td>\n35,4 kJ\/mole<\/strong><\/td>\n33,2 kJ\/mole<\/strong><\/td>\n<\/tr>\n
Chaleur de vaporisation<\/td>\n824 kJ\/mol<\/span><\/strong><\/td>\n715 kJ\/mole<\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div><\/div>\n","protected":false},"excerpt":{"rendered":"

Cet article contient une comparaison des principales propri\u00e9t\u00e9s thermiques et atomiques du tungst\u00e8ne et du rh\u00e9nium, deux \u00e9l\u00e9ments chimiques comparables du tableau p\u00e9riodique.\u00a0Il contient \u00e9galement des descriptions de base et des applications des deux \u00e9l\u00e9ments.\u00a0Tungst\u00e8ne contre Rh\u00e9nium. 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":"\nTungst\u00e8ne et Rh\u00e9nium - 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 tungst\u00e8ne et du rh\u00e9nium, deux \u00e9l\u00e9ments chimiques comparables du tableau p\u00e9riodique. 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