{"id":114438,"date":"2022-02-06T23:31:34","date_gmt":"2022-02-06T22:31:34","guid":{"rendered":"https:\/\/material-properties.org\/zirconium-et-niobium-comparaison-proprietes\/"},"modified":"2022-03-22T14:30:36","modified_gmt":"2022-03-22T13:30:36","slug":"zirconium-et-niobium-comparaison-proprietes","status":"publish","type":"post","link":"https:\/\/material-properties.org\/fr\/zirconium-et-niobium-comparaison-proprietes\/","title":{"rendered":"Zirconium et Niobium – Comparaison – Propri\u00e9t\u00e9s"},"content":{"rendered":"

Cet article contient une comparaison des principales propri\u00e9t\u00e9s thermiques et atomiques du zirconium et du niobium, deux \u00e9l\u00e9ments chimiques comparables du tableau p\u00e9riodique.\u00a0Il contient \u00e9galement des descriptions de base et des applications des deux \u00e9l\u00e9ments.\u00a0Zirconium contre Niobium.<\/em><\/p>\n

\"zirconium<\/p>\n

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

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

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

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

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

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

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

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

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

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

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

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

<\/div>\n
\n

Zirconium et Niobium – \u00c0 propos des \u00e9l\u00e9ments<\/h2>\n<\/div><\/div>\n
\n
\"\"<\/div>
\n

Zirconium<\/h3>\n

Le zirconium est un m\u00e9tal de transition solide, brillant, gris-blanc, qui ressemble \u00e0 l’hafnium et, dans une moindre mesure, au titane.\u00a0Le zirconium est principalement utilis\u00e9 comme r\u00e9fractaire et opacifiant, bien que de petites quantit\u00e9s soient utilis\u00e9es comme agent d’alliage pour sa forte r\u00e9sistance \u00e0 la corrosion.\u00a0Le zirconium est largement utilis\u00e9 comme gaine pour les combustibles des r\u00e9acteurs nucl\u00e9aires.\u00a0Les propri\u00e9t\u00e9s recherch\u00e9es pour ces alliages sont une faible section efficace de capture neutronique et une r\u00e9sistance \u00e0 la corrosion dans des conditions normales de service.<\/p><\/div>

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

Niobium<\/h3>\n

Le niobium est un m\u00e9tal de transition doux, gris et ductile, que l’on trouve souvent dans les min\u00e9raux pyrochlore (la principale source commerciale de niobium) et la columbite<\/p>\n<\/div>

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

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

\n

\"Niobium<\/p>\n

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

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

<\/div>\n
\n

Zirconium et Niobium – Applications<\/h2>\n<\/div><\/div>\n
\n
\n
\n

Zirconium<\/a><\/h3>\n

La plupart du zircon est utilis\u00e9 directement dans les applications \u00e0 haute temp\u00e9rature. Ce mat\u00e9riau est r\u00e9fractaire, dur et r\u00e9sistant aux attaques chimiques. En raison de ces propri\u00e9t\u00e9s, le zircon trouve de nombreuses applications, dont peu sont tr\u00e8s m\u00e9diatis\u00e9es. Son utilisation principale est comme opacifiant, conf\u00e9rant un aspect blanc et opaque aux mat\u00e9riaux c\u00e9ramiques. Le zirconium et ses alliages sont largement utilis\u00e9s comme gaine pour les combustibles des r\u00e9acteurs nucl\u00e9aires. Le zirconium alli\u00e9 au niobium ou \u00e0 l’\u00e9tain poss\u00e8de d’excellentes propri\u00e9t\u00e9s de corrosion. La haute r\u00e9sistance \u00e0 la corrosion des alliages de zirconium r\u00e9sulte de la formation naturelle d’un oxyde dense et stable \u00e0 la surface du m\u00e9tal. Ce film est auto-cicatrisant, il continue \u00e0 se d\u00e9velopper lentement \u00e0 des temp\u00e9ratures allant jusqu’\u00e0 environ 550\u00b0C (1020\u00b0F) et il reste fermement adh\u00e9rent. La propri\u00e9t\u00e9 recherch\u00e9e de ces alliages est \u00e9galement une faible section efficace de capture de neutrons.<\/p>\n<\/div><\/div>\n<\/div><\/div>\n<\/div><\/div>\n

\n
\n
\n

Niobium<\/a><\/h3>\n

La consommation de niobium est domin\u00e9e par son utilisation comme additif \u00e0 l’acier faiblement alli\u00e9 \u00e0 haute r\u00e9sistance et \u00e0 l’acier inoxydable pour les ol\u00e9oducs et gazoducs, les carrosseries de voitures et de camions, les exigences architecturales, les aciers \u00e0 outils, les coques de navires, les voies ferr\u00e9es.\u00a0Cependant, il existe un certain nombre d’autres applications pour le niobium m\u00e9tallique et ses compos\u00e9s.\u00a0Bien que le niobium ait de nombreuses applications, la majorit\u00e9 est utilis\u00e9e dans la production d’acier de construction de haute qualit\u00e9.\u00a0La deuxi\u00e8me plus grande application du niobium concerne les superalliages \u00e0 base de nickel.\u00a0Les alliages niobium-\u00e9tain sont utilis\u00e9s comme aimants supraconducteurs.<\/p>\n<\/div><\/div>\n<\/div><\/div>\n<\/div><\/div>\n

\n

Zirconium et niobium – 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>\nZirconium<\/b><\/td>\nNiobium<\/b><\/td>\n<\/tr>\n
Densit\u00e9<\/td>\n6,511 g\/cm3<\/strong><\/td>\n8,57 g\/cm3<\/strong><\/td>\n<\/tr>\n
R\u00e9sistance \u00e0 la traction ultime<\/td>\n330 MPa<\/strong><\/td>\n275 MPa<\/strong><\/td>\n<\/tr>\n
Limite d’\u00e9lasticit\u00e9<\/td>\n230 MPa<\/strong><\/td>\n70 MPa<\/strong><\/td>\n<\/tr>\n
Module de Young<\/td>\n88 GPa<\/strong><\/td>\n105 GPa<\/strong><\/td>\n<\/tr>\n
\u00c9chelle de Mohs<\/td>\n5<\/strong><\/td>\n6<\/strong><\/td>\n<\/tr>\n
Duret\u00e9 Brinell<\/td>\n650 MPa<\/strong><\/td>\n740 MPa<\/strong><\/td>\n<\/tr>\n
Duret\u00e9 Vickers<\/td>\n900 MPa<\/strong><\/td>\n1300 MPa<\/strong><\/td>\n<\/tr>\n
Point de fusion<\/td>\n1855\u00b0C<\/strong><\/td>\n2477\u00b0C<\/strong><\/td>\n<\/tr>\n
Point d’\u00e9bullition<\/td>\n4377\u00b0C<\/strong><\/td>\n4744\u00b0C<\/strong><\/td>\n<\/tr>\n
Conductivit\u00e9 thermique<\/td>\n22,7 W\/mK<\/strong><\/td>\n53,7 W\/mK<\/strong><\/td>\n<\/tr>\n
Coefficient de dilatation thermique<\/td>\n5,7 \u00b5m\/mK<\/strong><\/td>\n7,3 \u00b5m\/mK<\/strong><\/td>\n<\/tr>\n
Chaleur sp\u00e9cifique<\/td>\n0,27 J\/g\u00b7K<\/span><\/strong><\/td>\n0,26 J\/g\u00b7K<\/strong><\/td>\n<\/tr>\n
Temp\u00e9rature de fusion<\/td>\n16,9 kJ\/mole<\/strong><\/td>\n26,4 kJ\/mole<\/strong><\/td>\n<\/tr>\n
Chaleur de vaporisation<\/td>\n591 kJ\/mole<\/span><\/strong><\/td>\n682 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 zirconium et du niobium, deux \u00e9l\u00e9ments chimiques comparables du tableau p\u00e9riodique.\u00a0Il contient \u00e9galement des descriptions de base et des applications des deux \u00e9l\u00e9ments.\u00a0Zirconium contre Niobium. 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":"\nZirconium et Niobium - 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 zirconium et du niobium, deux \u00e9l\u00e9ments chimiques comparables du tableau p\u00e9riodique. 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