{"id":114430,"date":"2022-02-06T20:35:23","date_gmt":"2022-02-06T19:35:23","guid":{"rendered":"https:\/\/material-properties.org\/rhodium-et-iridium-comparaison-proprietes\/"},"modified":"2022-03-22T14:17:36","modified_gmt":"2022-03-22T13:17:36","slug":"rhodium-et-iridium-comparaison-proprietes","status":"publish","type":"post","link":"https:\/\/material-properties.org\/fr\/rhodium-et-iridium-comparaison-proprietes\/","title":{"rendered":"Rhodium et Iridium – Comparaison – Propri\u00e9t\u00e9s"},"content":{"rendered":"

Cet article contient une comparaison des principales propri\u00e9t\u00e9s thermiques et atomiques du rhodium 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.\u00a0Rhodium contre Iridium.<\/em><\/p>\n

\"rhodium<\/p>\n

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

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

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

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

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

\"Rh\u00e9nium<\/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

Rhodium et Iridium – \u00c0 propos des \u00e9l\u00e9ments<\/h2>\n<\/div><\/div>\n
\n
\"\"<\/div>
\n

Rhodium<\/h3>\n

Le rhodium est un m\u00e9tal de transition rare, blanc argent\u00e9, dur, r\u00e9sistant \u00e0 la corrosion et chimiquement inerte.\u00a0C’est un m\u00e9tal noble et un membre du groupe du platine.<\/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).\u00a0C’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

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

\n

\"Iridium<\/p>\n

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

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

<\/div>\n
\n

Rhodium et Iridium – Applications<\/h2>\n<\/div><\/div>\n
\n
\n
\n

Rhodium<\/a><\/h3>\n

L’utilisation principale de l’\u00e9l\u00e9ment (environ 80% de la production mondiale de rhodium) est l’un des catalyseurs des convertisseurs catalytiques \u00e0 trois voies des automobiles.\u00a0Parce que le m\u00e9tal rhodium est inerte contre la corrosion et la plupart des produits chimiques agressifs, et en raison de sa raret\u00e9, le rhodium est g\u00e9n\u00e9ralement alli\u00e9 au platine ou au palladium et appliqu\u00e9 dans des rev\u00eatements r\u00e9sistants aux hautes temp\u00e9ratures et \u00e0 la corrosion.\u00a0Dans les r\u00e9acteurs nucl\u00e9aires, les d\u00e9tecteurs \u00e0 base de rhodium sont souvent utilis\u00e9s pour mesurer le flux neutronique dans le c\u0153ur.<\/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

Rhodium 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>\nRhodium<\/b><\/td>\nIridium<\/b><\/td>\n<\/tr>\n
Densit\u00e9<\/td>\n12,45 g\/cm3<\/strong><\/td>\n22,65 g\/cm3<\/strong><\/td>\n<\/tr>\n
R\u00e9sistance \u00e0 la traction ultime<\/td>\n950 MPa<\/strong><\/td>\n2000 MPa<\/strong><\/td>\n<\/tr>\n
Limite d’\u00e9lasticit\u00e9<\/td>\nN \/ A<\/strong><\/td>\nN \/ A<\/strong><\/td>\n<\/tr>\n
Module de Young<\/td>\n380 GPa<\/strong><\/td>\n528 GPa<\/strong><\/td>\n<\/tr>\n
\u00c9chelle de Mohs<\/td>\n6<\/strong><\/td>\n6,25<\/strong><\/td>\n<\/tr>\n
Duret\u00e9 Brinell<\/td>\n1100 MPa<\/strong><\/td>\n1670 MPa<\/strong><\/td>\n<\/tr>\n
Duret\u00e9 Vickers<\/td>\n1246 MPa<\/strong><\/td>\n1760 MPa<\/strong><\/td>\n<\/tr>\n
Point de fusion<\/td>\n1964 \u00b0C<\/strong><\/td>\n2410\u00b0C<\/strong><\/td>\n<\/tr>\n
Point d’\u00e9bullition<\/td>\n3695\u00b0C<\/strong><\/td>\n4130\u00b0C<\/strong><\/td>\n<\/tr>\n
Conductivit\u00e9 thermique<\/td>\n150 W\/mK<\/strong><\/td>\n150 W\/mK<\/strong><\/td>\n<\/tr>\n
Coefficient de dilatation thermique<\/td>\n8,2 \u00b5m\/mK<\/strong><\/td>\n6,4 \u00b5m\/mK<\/strong><\/td>\n<\/tr>\n
Chaleur sp\u00e9cifique<\/td>\n0,242 J\/g\u00b7K<\/span><\/strong><\/td>\n0,13 J\/g\u00b7K<\/strong><\/td>\n<\/tr>\n
Temp\u00e9rature de fusion<\/td>\n21,5 kJ\/mole<\/strong><\/td>\n26,1 kJ\/mole<\/strong><\/td>\n<\/tr>\n
Chaleur de vaporisation<\/td>\n493 kJ\/mole<\/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 rhodium 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.\u00a0Rhodium 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":"\nRhodium 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 rhodium et de l'iridium, deux \u00e9l\u00e9ments chimiques comparables du tableau p\u00e9riodique. 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