{"id":114433,"date":"2022-02-06T21:41:26","date_gmt":"2022-02-06T20:41:26","guid":{"rendered":"https:\/\/material-properties.org\/rhodium-et-palladium-comparaison-proprietes\/"},"modified":"2022-03-22T14:24:54","modified_gmt":"2022-03-22T13:24:54","slug":"rhodium-et-palladium-comparaison-proprietes","status":"publish","type":"post","link":"https:\/\/material-properties.org\/fr\/rhodium-et-palladium-comparaison-proprietes\/","title":{"rendered":"Rhodium et Palladium – Comparaison – Propri\u00e9t\u00e9s"},"content":{"rendered":"

Cet article contient une comparaison des principales propri\u00e9t\u00e9s thermiques et atomiques du rhodium et du palladium, 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 Palladium.<\/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 le palladium avec un autre \u00e9l\u00e9ment<\/div>
\n
<\/div>\n

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

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

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

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

<\/div>\n
\n

Rhodium et Palladium – \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

Palladium<\/h3>\n

Le palladium, le platine, le rhodium, le ruth\u00e9nium, l’iridium et l’osmium forment un groupe d’\u00e9l\u00e9ments appel\u00e9s m\u00e9taux du groupe du platine (MGP).\u00a0Ceux-ci ont des propri\u00e9t\u00e9s chimiques similaires, mais le palladium a le point de fusion le plus bas et est le moins dense d’entre eux.\u00a0Plus de la moiti\u00e9 de l’offre de palladium et de son cong\u00e9n\u00e8re le platine est utilis\u00e9e dans les convertisseurs catalytiques.<\/p>\n<\/div>

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

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

\n

\"Palladium<\/p>\n

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

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

<\/div>\n
\n

Rhodium et Palladium – 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

Palladium<\/a><\/h3>\n

Plus de la moiti\u00e9 de l’approvisionnement en palladium et son cong\u00e9n\u00e8re le platine est utilis\u00e9 dans les convertisseurs catalytiques, qui convertissent jusqu’\u00e0 90 % des gaz nocifs des gaz d’\u00e9chappement des automobiles en substances moins nocives. Le palladium est \u00e9galement utilis\u00e9 dans l’\u00e9lectronique, la dentisterie, la m\u00e9decine, la purification de l’hydrog\u00e8ne, les applications chimiques, le traitement des eaux souterraines et la joaillerie. Les alliages \u00e0 base de palladium sont largement utilis\u00e9s dans les applications de la technologie des piles \u00e0 combustible. Le m\u00e9tal est \u00e9galement utilis\u00e9 dans le processus d’impression photographique historique. Le palladium est utilis\u00e9 comme m\u00e9tal pr\u00e9cieux en joaillerie depuis 1939 comme alternative au platine dans les alliages appel\u00e9s \u00abor blanc\u00bb.<\/p>\n<\/div><\/div>\n<\/div><\/div>\n<\/div><\/div>\n

\n

Rhodium et Palladium – 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>\nPalladium<\/b><\/td>\n<\/tr>\n
Densit\u00e9<\/td>\n12,45 g\/cm3<\/strong><\/td>\n12,023g\/cm3<\/strong><\/td>\n<\/tr>\n
R\u00e9sistance \u00e0 la traction ultime<\/td>\n950 MPa<\/strong><\/td>\n135 MPa<\/strong><\/td>\n<\/tr>\n
Limite d’\u00e9lasticit\u00e9<\/td>\nN \/ A<\/strong><\/td>\n30 MPa<\/strong><\/td>\n<\/tr>\n
Module d’\u00e9lasticit\u00e9 de Young<\/td>\n380 GPa<\/strong><\/td>\n121 GPa<\/strong><\/td>\n<\/tr>\n
\u00c9chelle de Mohs<\/td>\n6<\/strong><\/td>\n4,8<\/strong><\/td>\n<\/tr>\n
Duret\u00e9 Brinell<\/td>\n1100 MPa<\/strong><\/td>\n320 MPa<\/strong><\/td>\n<\/tr>\n
Duret\u00e9 Vickers<\/td>\n1246 MPa<\/strong><\/td>\n400 MPa<\/strong><\/td>\n<\/tr>\n
Point de fusion<\/td>\n1964\u00b0C<\/strong><\/td>\n1554,9\u00b0C<\/strong><\/td>\n<\/tr>\n
Point d’\u00e9bullition<\/td>\n3695\u00b0C<\/strong><\/td>\n2963\u00b0C<\/strong><\/td>\n<\/tr>\n
Conductivit\u00e9 thermique<\/td>\n150 W\/mK<\/strong><\/td>\n72 W\/mK<\/strong><\/td>\n<\/tr>\n
Coefficient de dilatation thermique<\/td>\n8,2 \u00b5m\/mK<\/strong><\/td>\n11,8 \u00b5m\/mK<\/strong><\/td>\n<\/tr>\n
Chaleur sp\u00e9cifique<\/td>\n0,242 J\/g\u00b7K<\/span><\/strong><\/td>\n0,24 J\/g\u00b7K<\/strong><\/td>\n<\/tr>\n
Temp\u00e9rature de fusion<\/td>\n21,5 kJ\/mole<\/strong><\/td>\n17,6 kJ\/mole<\/strong><\/td>\n<\/tr>\n
Chaleur de vaporisation<\/td>\n493 kJ\/mole<\/span><\/strong><\/td>\n357 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 du palladium, 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 Palladium. 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 Palladium - 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 du palladium, deux \u00e9l\u00e9ments chimiques comparables du tableau p\u00e9riodique. Il contient \u00e9galement des descriptions de base et des applications des deux \u00e9l\u00e9ments. Rhodium contre Palladium.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/material-properties.org\/fr\/rhodium-et-palladium-comparaison-proprietes\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Rhodium et Palladium - Comparaison - Propri\u00e9t\u00e9s - Material Properties\" \/>\n<meta property=\"og:description\" content=\"Cet article contient une comparaison des principales propri\u00e9t\u00e9s thermiques et atomiques du rhodium et du palladium, deux \u00e9l\u00e9ments chimiques comparables du tableau p\u00e9riodique. Il contient \u00e9galement des descriptions de base et des applications des deux \u00e9l\u00e9ments. 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