{"id":115493,"date":"2022-04-25T05:40:14","date_gmt":"2022-04-25T04:40:14","guid":{"rendered":"https:\/\/material-properties.org\/helium-et-argon-comparaison-proprietes\/"},"modified":"2022-04-26T07:04:43","modified_gmt":"2022-04-26T06:04:43","slug":"helium-et-argon-comparaison-proprietes","status":"publish","type":"post","link":"https:\/\/material-properties.org\/fr\/helium-et-argon-comparaison-proprietes\/","title":{"rendered":"H\u00e9lium et Argon – Comparaison – Propri\u00e9t\u00e9s"},"content":{"rendered":"

Cet article contient une comparaison des principales propri\u00e9t\u00e9s thermiques et atomiques de l’h\u00e9lium et de l’argon, deux \u00e9l\u00e9ments chimiques comparables du tableau p\u00e9riodique.\u00a0Il contient \u00e9galement des descriptions de base et des applications des deux \u00e9l\u00e9ments.\u00a0H\u00e9lium contre Argon.<\/em><\/p>\n

\"h\u00e9lium<\/p>\n

\n
<\/span>Comparer l'h\u00e9lium avec un autre \u00e9l\u00e9ment<\/div>
\n
<\/div>\n

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

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

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

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

\"N\u00e9on<\/a><\/p>\n

\"X\u00e9non<\/a><\/p>\n<\/div><\/div>\n<\/div><\/div>\n

\n
<\/span>Comparer l'argon avec un autre \u00e9l\u00e9ment<\/div>
\n
<\/div>\n

\"H\u00e9lium<\/a><\/p>\n

\"N\u00e9on<\/a><\/p>\n

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

<\/div>\n
\n

H\u00e9lium et Argon – \u00c0 propos des \u00e9l\u00e9ments<\/h2>\n<\/div><\/div>\n
\n
\"\"<\/div>
\n

H\u00e9lium<\/h3>\n

C’est un gaz monoatomique incolore, inodore, insipide, non toxique, inerte, le premier du groupe des gaz rares dans le tableau p\u00e9riodique.\u00a0Son point d’\u00e9bullition est le plus bas de tous les \u00e9l\u00e9ments.
\n<\/p><\/div>

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

Argon<\/h3>\n

L’argon est le troisi\u00e8me gaz le plus abondant dans l’atmosph\u00e8re terrestre, \u00e0 0,934 % (9340 ppmv).\u00a0Il est plus de deux fois plus abondant que la vapeur d’eau (qui est en moyenne d’environ 4000 ppmv, mais varie consid\u00e9rablement), 23 fois plus abondant que le dioxyde de carbone (400 ppmv) et plus de 500 fois plus abondant que le n\u00e9on (18 ppmv).\u00a0L’argon est principalement utilis\u00e9 comme gaz de protection inerte dans le soudage et d’autres proc\u00e9d\u00e9s industriels \u00e0 haute temp\u00e9rature o\u00f9 des substances habituellement non r\u00e9actives deviennent r\u00e9actives;\u00a0par exemple, une atmosph\u00e8re d’argon est utilis\u00e9e dans les fours \u00e9lectriques \u00e0 graphite pour emp\u00eacher le graphite de br\u00fbler.
\n<\/p><\/div>

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

\"H\u00e9lium<\/p>\n<\/div><\/div>\n

\n

\"Argon<\/p>\n

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

Source\u00a0: www.luciteria.com<\/p>\n

<\/div>\n
\n

H\u00e9lium et Argon – Applications<\/h2>\n<\/div><\/div>\n
\n
\n
\n

H\u00e9lium<\/a><\/h3>\n

L’h\u00e9lium est utilis\u00e9 \u00e0 de nombreuses fins qui n\u00e9cessitent certaines de ses propri\u00e9t\u00e9s uniques, telles que son bas point d’\u00e9bullition, sa faible densit\u00e9, sa faible solubilit\u00e9, sa conductivit\u00e9 thermique \u00e9lev\u00e9e ou son inertie.\u00a0Sur la production mondiale totale d’h\u00e9lium en 2014 d’environ 32 millions de kg (180 millions de m\u00e8tres cubes standard) d’h\u00e9lium par an, la plus grande utilisation (environ 32 % du total en 2014) concerne les applications cryog\u00e9niques, dont la plupart impliquent le refroidissement des aimants supraconducteurs dans scanners IRM m\u00e9dicaux et spectrom\u00e8tres RMN.\u00a0La plupart des aimants cliniques sont des aimants supraconducteurs, qui n\u00e9cessitent de l’h\u00e9lium liquide pour les maintenir tr\u00e8s froids.<\/p>\n<\/div><\/div>\n<\/div><\/div>\n<\/div><\/div>\n

\n
\n
\n

Argon<\/a><\/h3>\n

Les principales applications de l’argon sont les suivantes\u00a0: lampes \u00e9lectriques comme gaz de remplissage, soudage, tubes \u00e0 d\u00e9charge, lasers \u00e0 argon et lasers \u00e0 colorant \u00e0 l’argon.\u00a0L’argon est principalement utilis\u00e9 comme gaz de protection inerte dans le soudage et d’autres proc\u00e9d\u00e9s industriels \u00e0 haute temp\u00e9rature o\u00f9 des substances habituellement non r\u00e9actives deviennent r\u00e9actives;\u00a0par exemple, une atmosph\u00e8re d’argon est utilis\u00e9e dans les fours \u00e9lectriques \u00e0 graphite pour emp\u00eacher le graphite de br\u00fbler.\u00a0L’argon est \u00e9galement utilis\u00e9 dans l’\u00e9clairage incandescent, fluorescent et autres tubes \u00e0 d\u00e9charge.<\/p>\n<\/div><\/div>\n<\/div><\/div>\n<\/div><\/div>\n

\n

H\u00e9lium et Argon – Comparaison dans le tableau<\/h2>\n<\/div><\/div>H\u00e9lium<\/p>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\u00c9l\u00e9ment<\/td>\nH\u00e9lium<\/strong><\/td>\nArgon<\/strong><\/td>\n<\/tr>\n
Densit\u00e9<\/td>\n0,00018 g\/cm3<\/strong><\/td>\n0,00178 g\/cm3<\/strong><\/td>\n<\/tr>\n
R\u00e9sistance \u00e0 la traction ultime<\/td>\nN \/ A<\/strong><\/td>\nN \/ A<\/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>\nN \/ A<\/strong><\/td>\nN \/ A<\/strong><\/td>\n<\/tr>\n
\u00c9chelle de Mohs<\/td>\nN \/ A<\/strong><\/td>\nN \/ A<\/strong><\/td>\n<\/tr>\n
Duret\u00e9 Brinell<\/td>\nN \/ A<\/strong><\/td>\nN \/ A<\/strong><\/td>\n<\/tr>\n
Duret\u00e9 Vickers<\/td>\nN \/ A<\/strong><\/td>\nN \/ A<\/strong><\/td>\n<\/tr>\n
Point de fusion<\/td>\n-272,2 \u00b0C<\/strong><\/td>\n-189,2 \u00b0C<\/strong><\/td>\n<\/tr>\n
Point d’\u00e9bullition<\/td>\n-268,9 \u00b0C<\/strong><\/td>\n-185,7 \u00b0C<\/strong><\/td>\n<\/tr>\n
Conductivit\u00e9 thermique<\/td>\n0,1513 W\/mK<\/strong><\/td>\n0,01772 W\/mK<\/strong><\/td>\n<\/tr>\n
Coefficient de dilatation thermique<\/td>\nN \/ A<\/strong><\/td>\nN \/ A<\/strong><\/td>\n<\/tr>\n
Chaleur sp\u00e9cifique<\/td>\n5.193 J\/g\u00b7K<\/span><\/strong><\/td>\n0,52 J\/g\u00b7K<\/span><\/strong><\/td>\n<\/tr>\n
Temp\u00e9rature de fusion<\/td>\n0,0138 kJ\/mol<\/span><\/strong><\/td>\n1,188 kJ\/mol<\/span><\/strong><\/td>\n<\/tr>\n
Chaleur de vaporisation<\/td>\n0,0845 kJ\/mol<\/span><\/strong><\/td>\n6,447 kJ\/mol<\/span><\/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 de l’h\u00e9lium et de l’argon, deux \u00e9l\u00e9ments chimiques comparables du tableau p\u00e9riodique.\u00a0Il contient \u00e9galement des descriptions de base et des applications des deux \u00e9l\u00e9ments.\u00a0H\u00e9lium contre Argon. Source\u00a0: www.luciteria.com H\u00e9lium<\/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":"\nH\u00e9lium et Argon - 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 de l'h\u00e9lium et de l'argon, deux \u00e9l\u00e9ments chimiques comparables du tableau p\u00e9riodique. Il contient \u00e9galement des descriptions de base et des applications des deux \u00e9l\u00e9ments. H\u00e9lium contre Argon.\" \/>\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\/helium-et-argon-comparaison-proprietes\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"H\u00e9lium et Argon - 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 de l'h\u00e9lium et de l'argon, 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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