{"id":114451,"date":"2022-02-07T04:18:55","date_gmt":"2022-02-07T03:18:55","guid":{"rendered":"https:\/\/material-properties.org\/zinc-et-selenium-comparaison-proprietes\/"},"modified":"2022-03-23T08:18:14","modified_gmt":"2022-03-23T07:18:14","slug":"zinc-et-selenium-comparaison-proprietes","status":"publish","type":"post","link":"https:\/\/material-properties.org\/fr\/zinc-et-selenium-comparaison-proprietes\/","title":{"rendered":"Zinc et S\u00e9l\u00e9nium – Comparaison – Propri\u00e9t\u00e9s"},"content":{"rendered":"

Cet article contient une comparaison des principales propri\u00e9t\u00e9s thermiques et atomiques du zinc et du s\u00e9l\u00e9nium, deux \u00e9l\u00e9ments chimiques comparables du tableau p\u00e9riodique. Il contient \u00e9galement des descriptions de base et des applications des deux \u00e9l\u00e9ments. Zinc contre S\u00e9l\u00e9nium.<\/em><\/p>\n

\"zinc<\/p>\n

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

\"Magn\u00e9sium<\/a><\/p>\n

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

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

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

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

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

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

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

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

\"S\u00e9l\u00e9nium<\/a><\/p>\n<\/div><\/div>\n<\/div><\/div>\n

\n
<\/span>Comparer avec le s\u00e9l\u00e9nium un autre \u00e9l\u00e9ment<\/div>
\n
<\/div>\n

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

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

<\/div>\n
\n

Zinc et S\u00e9l\u00e9nium – \u00c0 propos des \u00e9l\u00e9ments<\/h2>\n<\/div><\/div>\n
\n
\"\"<\/div>
\n

Zinc<\/h3>\n

\u00c0 certains \u00e9gards, le zinc est chimiquement similaire au magn\u00e9sium : les deux \u00e9l\u00e9ments ne pr\u00e9sentent qu’un seul \u00e9tat d’oxydation normal (+2) et les ions Zn2+ et Mg2+ sont de taille similaire.
\n<\/p><\/div>

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

S\u00e9l\u00e9nium<\/h3>\n

Le s\u00e9l\u00e9nium est un non-m\u00e9tal avec des propri\u00e9t\u00e9s interm\u00e9diaires entre les \u00e9l\u00e9ments ci-dessus et ci-dessous dans le tableau p\u00e9riodique, le soufre et le tellure, et pr\u00e9sente \u00e9galement des similitudes avec l’arsenic.\u00a0Il se produit rarement dans son \u00e9tat \u00e9l\u00e9mentaire ou sous forme de compos\u00e9s de minerai pur dans la cro\u00fbte terrestre.<\/p>\n<\/div>

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

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

\n

\"S\u00e9l\u00e9nium<\/p>\n

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

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

<\/div>\n
\n

Zinc et S\u00e9l\u00e9nium – Applications<\/h2>\n<\/div><\/div>\n
\n
\n
\n

Zinc<\/a><\/h3>\n

Le zingage r\u00e9sistant \u00e0 la corrosion du fer (galvanisation \u00e0 chaud) est la principale application du zinc.\u00a0Le rev\u00eatement de l’acier constitue la plus grande utilisation unique du zinc, mais il est utilis\u00e9 en gros tonnages dans les pi\u00e8ces moul\u00e9es en alliage de zinc, sous forme de poussi\u00e8re et d’oxyde de zinc, et dans les produits en zinc corroy\u00e9.\u00a0L’acier galvanis\u00e9 est simplement de l’acier au carbone recouvert d’une fine couche de zinc.\u00a0Le zinc prot\u00e8ge le fer en se corrodant d’abord, mais le zinc se corrode beaucoup moins vite que l’acier.\u00a0D’autres applications concernent les batteries \u00e9lectriques, les petites pi\u00e8ces moul\u00e9es non structurelles et les alliages tels que le laiton.\u00a0Une vari\u00e9t\u00e9 de compos\u00e9s de zinc sont couramment utilis\u00e9s, tels que le carbonate de zinc et le gluconate de zinc (comme compl\u00e9ments alimentaires), le chlorure de zinc (dans les d\u00e9odorants), le pyrithione de zinc (shampoings antipelliculaires), le sulfure de zinc (dans les peintures luminescentes) et le dim\u00e9thylzinc ou le di\u00e9thylzinc. au laboratoire biologique.\u00a0Un \u00e9l\u00e9ment cl\u00e9 du monde des mat\u00e9riaux modernes dans lequel se trouve le zinc est le recyclage.\u00a0Le zinc, comme tous les m\u00e9taux (et contrairement aux mat\u00e9riaux synth\u00e9tiques) peut \u00eatre recycl\u00e9 ind\u00e9finiment sans d\u00e9gradation.<\/p>\n<\/div><\/div>\n<\/div><\/div>\n<\/div><\/div>\n

\n
\n
\n

S\u00e9l\u00e9nium<\/a><\/h3>\n

Les principales utilisations commerciales du s\u00e9l\u00e9nium aujourd’hui sont la fabrication du verre et les pigments.\u00a0Le s\u00e9l\u00e9nium trouve des applications dans diverses industries, par exemple, les applications de cellules solaires et de photoconducteurs, l’\u00e9lectrolyse du mangan\u00e8se, la protection contre les surtensions en courant continu ou la cristallographie aux rayons X.<\/p>\n<\/div><\/div>\n<\/div><\/div>\n<\/div><\/div>\n

\n

Zinc et S\u00e9l\u00e9nium – 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>\nZinc<\/b><\/td>\nS\u00e9l\u00e9nium<\/b><\/td>\n<\/tr>\n
Densit\u00e9<\/td>\n7,14 g\/cm3<\/strong><\/td>\n4,819 g\/cm3<\/strong><\/td>\n<\/tr>\n
R\u00e9sistance \u00e0 la traction ultime<\/td>\n90 MPa<\/strong><\/td>\n300 MPa<\/strong><\/td>\n<\/tr>\n
Limite d’\u00e9lasticit\u00e9<\/td>\n75 MPa<\/strong><\/td>\n150 MPa<\/strong><\/td>\n<\/tr>\n
Module de Young<\/td>\n108 GPa<\/strong><\/td>\n10 GPa<\/strong><\/td>\n<\/tr>\n
\u00c9chelle de Mohs<\/td>\n2,5<\/strong><\/td>\n2<\/strong><\/td>\n<\/tr>\n
Duret\u00e9 Brinell<\/td>\n330 MPa<\/strong><\/td>\n740 MPa<\/strong><\/td>\n<\/tr>\n
Duret\u00e9 Vickers<\/td>\nN \/ A<\/strong><\/td>\nN \/ A<\/strong><\/td>\n<\/tr>\n
Point de fusion<\/td>\n419,53\u00b0C<\/strong><\/td>\n221\u00b0C<\/strong><\/td>\n<\/tr>\n
Point d’\u00e9bullition<\/td>\n907\u00b0C<\/strong><\/td>\n685\u00b0C<\/strong><\/td>\n<\/tr>\n
Conductivit\u00e9 thermique<\/td>\n116 W\/mK<\/strong><\/td>\n2,04 W\/mK<\/strong><\/td>\n<\/tr>\n
Coefficient de dilatation thermique<\/td>\n30,2 \u00b5m\/mK<\/strong><\/td>\n37 \u00b5m\/mK<\/strong><\/td>\n<\/tr>\n
Chaleur sp\u00e9cifique<\/td>\n0,39 J\/g\u00b7K<\/span><\/strong><\/td>\n0,23 J\/g\u00b7K<\/strong><\/td>\n<\/tr>\n
Temp\u00e9rature de fusion<\/td>\n7,322 kJ\/mol<\/strong><\/td>\n6,694 kJ\/mol<\/strong><\/td>\n<\/tr>\n
Chaleur de vaporisation<\/td>\n115,3\u00a0kJ\/mole<\/span><\/strong><\/td>\n37,7 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 zinc et du s\u00e9l\u00e9nium, deux \u00e9l\u00e9ments chimiques comparables du tableau p\u00e9riodique. Il contient \u00e9galement des descriptions de base et des applications des deux \u00e9l\u00e9ments. Zinc contre S\u00e9l\u00e9nium. 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":"\nZinc et S\u00e9l\u00e9nium - 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 zinc et du s\u00e9l\u00e9nium, deux \u00e9l\u00e9ments chimiques comparables du tableau p\u00e9riodique. 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