{"id":114407,"date":"2022-02-05T06:23:49","date_gmt":"2022-02-05T05:23:49","guid":{"rendered":"https:\/\/material-properties.org\/tungstene-et-iridium-comparaison-proprietes\/"},"modified":"2022-03-22T13:23:06","modified_gmt":"2022-03-22T12:23:06","slug":"tungstene-et-iridium-comparaison-proprietes","status":"publish","type":"post","link":"https:\/\/material-properties.org\/fr\/tungstene-et-iridium-comparaison-proprietes\/","title":{"rendered":"Tungst\u00e8ne et Iridium – Comparaison – Propri\u00e9t\u00e9s"},"content":{"rendered":"

Cet article contient une comparaison des principales propri\u00e9t\u00e9s thermiques et atomiques du tungst\u00e8ne et de l’iridium, 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 Iridium.<\/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 l'iridium avec un autre \u00e9l\u00e9ment<\/div>
\n
<\/div>\n

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

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

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

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

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

<\/div>\n
\n

Tugsten et Iridium – \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

Iridium<\/h3>\n

L’iridium est un m\u00e9tal de transition tr\u00e8s dur, cassant, blanc argent\u00e9 du groupe du platine, l’iridium est g\u00e9n\u00e9ralement cr\u00e9dit\u00e9 d’\u00eatre le deuxi\u00e8me \u00e9l\u00e9ment le plus dense (apr\u00e8s l’osmium). C’est aussi le m\u00e9tal le plus r\u00e9sistant \u00e0 la corrosion, m\u00eame \u00e0 des temp\u00e9ratures aussi \u00e9lev\u00e9es que 2000\u00b0C.<\/p>\n<\/div>

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

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

\n

\"Iridium<\/p>\n

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

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

<\/div>\n
\n

Tungst\u00e8ne et Iridium – 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

Iridium<\/a><\/h3>\n

L’iridium est principalement consomm\u00e9 par les industries automobile, \u00e9lectronique et chimique.\u00a0L’iridium m\u00e9tallique est utilis\u00e9 lorsqu’une r\u00e9sistance \u00e9lev\u00e9e \u00e0 la corrosion \u00e0 haute temp\u00e9rature est n\u00e9cessaire, comme dans les bougies d’allumage haute performance, les creusets pour la recristallisation des semi-conducteurs \u00e0 haute temp\u00e9rature et les \u00e9lectrodes pour la production de chlore dans le proc\u00e9d\u00e9 chloralcali.\u00a0La demande d’iridium est pass\u00e9e de 2,5 tonnes en 2009 \u00e0 10,4 tonnes en 2010, principalement en raison des applications li\u00e9es \u00e0 l’\u00e9lectronique qui ont vu une augmentation de 0,2 \u00e0 6 tonnes – les creusets en iridium sont couramment utilis\u00e9s pour la croissance de grands monocristaux de haute qualit\u00e9, dont la demande a fortement augment\u00e9.<\/p>\n<\/div><\/div>\n<\/div><\/div>\n<\/div><\/div>\n

\n

Tungst\u00e8ne et Iridium – 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>\nIridium<\/b><\/td>\n<\/tr>\n
Densit\u00e9<\/td>\n19,25 g\/cm3<\/strong><\/td>\n22,65 g\/cm3<\/strong><\/td>\n<\/tr>\n
R\u00e9sistance \u00e0 la traction ultime<\/td>\n980 MPa<\/strong><\/td>\n2000 MPa<\/strong><\/td>\n<\/tr>\n
Limite d’\u00e9lasticit\u00e9<\/td>\n750 MPa<\/strong><\/td>\nN \/ A<\/strong><\/td>\n<\/tr>\n
Module de Young<\/td>\n411 GPa<\/strong><\/td>\n528 GPa<\/strong><\/td>\n<\/tr>\n
\u00c9chelle de Mohs<\/td>\n7,5<\/strong><\/td>\n6,25<\/strong><\/td>\n<\/tr>\n
Duret\u00e9 Brinell<\/td>\n3000 MPa<\/strong><\/td>\n1670 MPa<\/strong><\/td>\n<\/tr>\n
Duret\u00e9 Vickers<\/td>\n3500 MPa<\/strong><\/td>\n1760 MPa<\/strong><\/td>\n<\/tr>\n
Point de fusion<\/td>\n3410\u00b0C<\/strong><\/td>\n2410\u00b0C<\/strong><\/td>\n<\/tr>\n
Point d’\u00e9bullition<\/td>\n59300\u00b0C<\/strong><\/td>\n4130\u00b0C<\/strong><\/td>\n<\/tr>\n
Conductivit\u00e9 thermique<\/td>\n170W\/mK<\/strong><\/td>\n150W\/mK<\/strong><\/td>\n<\/tr>\n
Coefficient de dilatation thermique<\/td>\n4,5 \u00b5m\/mK<\/strong><\/td>\n6,4 \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>\n26,1 kJ\/mole<\/strong><\/td>\n<\/tr>\n
Chaleur de vaporisation<\/td>\n824 kJ\/mol<\/span><\/strong><\/td>\n604 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 de l’iridium, 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 Iridium. 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 Iridium - 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 de l'iridium, deux \u00e9l\u00e9ments chimiques comparables du tableau p\u00e9riodique. 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