{"id":114479,"date":"2022-02-07T14:36:42","date_gmt":"2022-02-07T13:36:42","guid":{"rendered":"https:\/\/material-properties.org\/chrome-et-manganese-comparaison-proprietes\/"},"modified":"2022-03-23T11:44:31","modified_gmt":"2022-03-23T10:44:31","slug":"chrome-et-manganese-comparaison-proprietes","status":"publish","type":"post","link":"https:\/\/material-properties.org\/fr\/chrome-et-manganese-comparaison-proprietes\/","title":{"rendered":"Chrome et Mangan\u00e8se – Comparaison – Propri\u00e9t\u00e9s"},"content":{"rendered":"

Cet article contient une comparaison des principales propri\u00e9t\u00e9s thermiques et atomiques du chrome et du mangan\u00e8se, deux \u00e9l\u00e9ments chimiques comparables du tableau p\u00e9riodique.\u00a0Il contient \u00e9galement des descriptions de base et des applications des deux \u00e9l\u00e9ments.\u00a0Chrome vs Mangan\u00e8se.<\/em><\/p>\n

\"chrome<\/p>\n

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

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

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

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

\"Mangan\u00e8se<\/a><\/p>\n

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

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

\n
<\/span>Comparer le mangan\u00e8se avec un autre \u00e9l\u00e9ment<\/div>
\n
<\/div>\n

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

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

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

<\/div>\n
\n

Chrome et Mangan\u00e8se – \u00c0 propos des \u00e9l\u00e9ments<\/h2>\n<\/div><\/div>\n
\n
\"\"<\/div>
\n

Chrome<\/h3>\n

Le chrome est un m\u00e9tal gris acier, brillant, dur et cassant qui prend un poli \u00e9lev\u00e9, r\u00e9siste au ternissement et a un point de fusion \u00e9lev\u00e9.\u00a0Un d\u00e9veloppement majeur a \u00e9t\u00e9 la d\u00e9couverte que l’acier pouvait \u00eatre rendu hautement r\u00e9sistant \u00e0 la corrosion et \u00e0 la d\u00e9coloration en ajoutant du chrome m\u00e9tallique pour former de l’acier inoxydable.
\n<\/p><\/div>

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

Mangan\u00e8se<\/h3>\n

Le mangan\u00e8se est un m\u00e9tal avec d’importantes utilisations dans les alliages m\u00e9talliques industriels, en particulier dans les aciers inoxydables.<\/p>\n<\/div>

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

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

\n

\"Mangan\u00e8se<\/p>\n

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

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

<\/div>\n
\n

Chrome et Mangan\u00e8se – Applications<\/h2>\n<\/div><\/div>\n
\n
\n
\n

Chrome<\/a><\/h3>\n

Le chrome est l’un des m\u00e9taux industriels les plus importants et indispensables en raison de sa duret\u00e9 et de sa r\u00e9sistance \u00e0 la corrosion.\u00a0Mais il est utilis\u00e9 pour plus que la production d’acier inoxydable et d’alliages non ferreux ;\u00a0il est \u00e9galement utilis\u00e9 pour cr\u00e9er des pigments et des produits chimiques utilis\u00e9s pour traiter le cuir.\u00a0En m\u00e9tallurgie, le chrome augmente la duret\u00e9, la r\u00e9sistance et la r\u00e9sistance \u00e0 la corrosion.\u00a0L’effet de renforcement de la formation de carbures m\u00e9talliques stables aux joints de grains et la forte augmentation de la r\u00e9sistance \u00e0 la corrosion ont fait du chrome un mat\u00e9riau d’alliage important pour l’acier.\u00a0De mani\u00e8re g\u00e9n\u00e9rale, la concentration sp\u00e9cifi\u00e9e pour la plupart des grades est d’environ 4 %.\u00a0Ce niveau semble donner le meilleur \u00e9quilibre entre duret\u00e9 et t\u00e9nacit\u00e9.\u00a0Le chrome joue un r\u00f4le important dans le m\u00e9canisme de durcissement et est consid\u00e9r\u00e9 comme irrempla\u00e7able.\u00a0A des temp\u00e9ratures plus \u00e9lev\u00e9es,\u00a0le chrome contribue \u00e0 une r\u00e9sistance accrue.\u00a0Il est habituellement utilis\u00e9 pour des applications de cette nature en conjonction avec du molybd\u00e8ne.\u00a0La r\u00e9sistance des aciers inoxydables est bas\u00e9e sur la passivation.\u00a0Pour que la passivation se produise et reste stable, l’alliage Fe-Cr doit avoir une teneur minimale en chrome d’environ 11 % en poids, au-dessus de laquelle la passivation peut se produire et en dessous de laquelle elle est impossible.<\/p>\n<\/div><\/div>\n<\/div><\/div>\n<\/div><\/div>\n

\n
\n
\n

Mangan\u00e8se<\/a><\/h3>\n

Le mangan\u00e8se est un agent d’alliage important.\u00a0Pr\u00e8s de 90 % du mangan\u00e8se produit annuellement est utilis\u00e9 dans la production d’acier.\u00a0Dans les aciers, le mangan\u00e8se am\u00e9liore les qualit\u00e9s de laminage et de forgeage, ainsi que la r\u00e9sistance, la t\u00e9nacit\u00e9, la rigidit\u00e9, la r\u00e9sistance \u00e0 l’usure, la duret\u00e9 et la trempabilit\u00e9.\u00a0La deuxi\u00e8me plus grande application du mangan\u00e8se concerne les alliages d’aluminium.\u00a0L’aluminium avec environ 1,5% de mangan\u00e8se a une r\u00e9sistance accrue \u00e0 la corrosion gr\u00e2ce \u00e0 des grains qui absorbent les impuret\u00e9s qui conduiraient \u00e0 la corrosion galvanique.\u00a0Le mangan\u00e8se peut \u00eatre transform\u00e9 en de nombreux compos\u00e9s utiles.\u00a0Par exemple, l’oxyde de mangan\u00e8se, qui peut \u00eatre utilis\u00e9 dans les engrais et la c\u00e9ramique.<\/p>\n<\/div><\/div>\n<\/div><\/div>\n<\/div><\/div>\n

\n

Chrome et Mangan\u00e8se – 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>\nChrome<\/b><\/td>\nMangan\u00e8se<\/b><\/td>\n<\/tr>\n
Densit\u00e9<\/td>\n7,14 g\/cm3<\/strong><\/td>\n7,47 g\/cm3<\/strong><\/td>\n<\/tr>\n
R\u00e9sistance \u00e0 la traction ultime<\/td>\n550 MPa<\/strong><\/td>\n650 MPa<\/strong><\/td>\n<\/tr>\n
Limite d’\u00e9lasticit\u00e9<\/td>\n131 MPa<\/strong><\/td>\n230 MPa<\/strong><\/td>\n<\/tr>\n
Module de Young<\/td>\n279 GPa<\/strong><\/td>\n198 GPa<\/strong><\/td>\n<\/tr>\n
\u00c9chelle de Mohs<\/td>\n8,5<\/strong><\/td>\n6<\/strong><\/td>\n<\/tr>\n
Duret\u00e9 Brinell<\/td>\n1120 MPa<\/strong><\/td>\n200 MPa<\/strong><\/td>\n<\/tr>\n
Duret\u00e9 Vickers<\/td>\n1060 MPa<\/strong><\/td>\nN \/ A<\/strong><\/td>\n<\/tr>\n
Point de fusion<\/td>\n1907\u00b0C<\/strong><\/td>\n1246\u00b0C<\/strong><\/td>\n<\/tr>\n
Point d’\u00e9bullition<\/td>\n2671\u00b0C<\/strong><\/td>\n2061\u00b0C<\/strong><\/td>\n<\/tr>\n
Conductivit\u00e9 thermique<\/td>\n93,7 W\/mK<\/strong><\/td>\n7,82 W\/mK<\/strong><\/td>\n<\/tr>\n
Coefficient de dilatation thermique<\/td>\n4,9 \u00b5m\/mK<\/strong><\/td>\n21,7 \u00b5m\/mK<\/strong><\/td>\n<\/tr>\n
Chaleur sp\u00e9cifique<\/td>\n0,45 J\/g\u00b7K<\/span><\/strong><\/td>\n0,48 J\/g\u00b7K<\/strong><\/td>\n<\/tr>\n
Temp\u00e9rature de fusion<\/td>\n16,9 kJ\/mole<\/strong><\/td>\n12,05 kJ\/mole<\/strong><\/td>\n<\/tr>\n
Chaleur de vaporisation<\/td>\n344,3\u00a0kJ\/mole<\/span><\/strong><\/td>\n266 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 chrome et du mangan\u00e8se, deux \u00e9l\u00e9ments chimiques comparables du tableau p\u00e9riodique.\u00a0Il contient \u00e9galement des descriptions de base et des applications des deux \u00e9l\u00e9ments.\u00a0Chrome vs Mangan\u00e8se. 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":"\nChrome et Mangan\u00e8se - 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 chrome et du mangan\u00e8se, deux \u00e9l\u00e9ments chimiques comparables du tableau p\u00e9riodique. Il contient \u00e9galement des descriptions de base et des applications des deux \u00e9l\u00e9ments. Chrome vs Mangan\u00e8se.\" \/>\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\/chrome-et-manganese-comparaison-proprietes\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Chrome et Mangan\u00e8se - 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 chrome et du mangan\u00e8se, 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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