{"id":114349,"date":"2022-02-04T09:11:37","date_gmt":"2022-02-04T08:11:37","guid":{"rendered":"https:\/\/material-properties.org\/amalgame-tableau-des-materiaux-applications-prix\/"},"modified":"2022-02-04T09:11:37","modified_gmt":"2022-02-04T08:11:37","slug":"amalgame-tableau-des-materiaux-applications-prix","status":"publish","type":"post","link":"https:\/\/material-properties.org\/fr\/amalgame-tableau-des-materiaux-applications-prix\/","title":{"rendered":"Amalgame – Tableau des mat\u00e9riaux – Applications – Prix"},"content":{"rendered":"

\u00c0 propos de l’amalgame<\/span><\/h2>\n

Un amalgame est un alliage de mercure avec un autre m\u00e9tal.\u00a0Il peut s’agir d’un liquide, d’une p\u00e2te molle ou d’un solide, selon la proportion de mercure.\u00a0

<\/div><\/span>\"amalgame<\/a>
<\/div><\/span><\/p>\n

R\u00e9sum\u00e9<\/span><\/h3>\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Nom<\/span><\/td>\nAmalgame<\/span><\/strong><\/td>\n<\/tr>\n
Phase \u00e0 STP<\/span><\/td>\nsolide<\/span><\/strong><\/td>\n<\/tr>\n
Densit\u00e9<\/span><\/td>\n14000kg\/m3<\/span><\/strong><\/td>\n<\/tr>\n
R\u00e9sistance \u00e0 la traction ultime<\/span><\/td>\n70 MPa<\/span><\/strong><\/td>\n<\/tr>\n
Limite d’\u00e9lasticit\u00e9<\/span><\/td>\nN \/ A<\/span><\/strong><\/td>\n<\/tr>\n
Module d’\u00e9lasticit\u00e9 de Young<\/span><\/td>\n40 GPa<\/span><\/strong><\/td>\n<\/tr>\n
Duret\u00e9 Brinell<\/span><\/td>\n120 BHN<\/span><\/strong><\/td>\n<\/tr>\n
Point de fusion<\/span><\/td>\n227\u00a0\u00b0C<\/span><\/strong><\/td>\n<\/tr>\n
Conductivit\u00e9 thermique<\/span><\/td>\n23W\/mK<\/span><\/strong><\/td>\n<\/tr>\n
Capacit\u00e9 thermique<\/span><\/td>\n210 J\/g\u00b7K<\/span><\/span><\/strong><\/td>\n<\/tr>\n
Prix<\/span><\/td>\n150 $\/kg<\/span><\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

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

Composition de l’amalgame<\/span><\/h2>\n

L’amalgame \u00e0 faible teneur en cuivre se compose g\u00e9n\u00e9ralement de mercure (50 %), d’argent (~ 22\u201332 %), d’\u00e9tain (~ 14 %), de zinc (~ 8 %) et d’autres m\u00e9taux traces.\u00a0L’amalgame \u00e0 haute teneur en cuivre comprend 40 \u00e0 60 % d’argent, 27 \u00e0 30 % d’\u00e9tain et 13 \u00e0 30 % de cuivre et 1 % de zinc serti de mercure.\u00a0

\n

50%<\/span>\"Mercure<\/a><\/span><\/p>\n

<\/span><\/p><\/div><\/div>

\n

25\u00a0<\/span><\/span>%<\/span>\"Argent<\/a><\/span><\/p>\n

<\/span><\/p><\/div><\/div>

\n

14\u00a0<\/span><\/span>%<\/span>\"\u00c9tain<\/a><\/span><\/p>\n

<\/span><\/p><\/div><\/div>

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

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

Applications de l’amalgame<\/span><\/h2>\n
\"Amalgame<\/a>
{%L\u00c9GENDE%}<\/span><\/figcaption><\/figure>\n

Les amalgames argent-mercure sont importants en dentisterie, et l’amalgame or-mercure est utilis\u00e9 dans l’extraction de l’or du minerai.\u00a0La dentisterie a utilis\u00e9 des alliages de mercure avec des m\u00e9taux tels que l’argent, le cuivre, l’indium, l’\u00e9tain et le zinc.\u00a0En ajoutant du cuivre, la phase \u00e9tain-mercure est \u00e9limin\u00e9e et les amalgames dentaires modernes sont fabriqu\u00e9s en m\u00e9langeant de la poudre d’alliage argent-\u00e9tain-cuivre avec du mercure.\u00a0Il en r\u00e9sulte des obturations qui r\u00e9sistent aux assauts m\u00e9caniques et chimiques dans la bouche pendant de nombreuses ann\u00e9es.\u00a0

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

Propri\u00e9t\u00e9s m\u00e9caniques de l’amalgame<\/span><\/h2>\n

La force de l’amalgame<\/span><\/h3>\n

En m\u00e9canique des mat\u00e9riaux, la\u00a0<\/span>r\u00e9sistance d’un mat\u00e9riau<\/span><\/strong>\u00a0est sa capacit\u00e9 \u00e0 supporter une charge appliqu\u00e9e sans rupture ni d\u00e9formation plastique.\u00a0<\/span>La r\u00e9sistance des mat\u00e9riaux<\/span><\/strong>\u00a0consid\u00e8re essentiellement la relation entre les\u00a0<\/span>charges externes<\/span><\/strong>\u00a0appliqu\u00e9es \u00e0 un mat\u00e9riau et la\u00a0<\/span>d\u00e9formation<\/span><\/strong>\u00a0ou la modification des dimensions du mat\u00e9riau qui en r\u00e9sulte.\u00a0Lors de la conception de structures et de machines, il est important de tenir compte de ces facteurs, afin que le mat\u00e9riau s\u00e9lectionn\u00e9 ait une r\u00e9sistance suffisante pour r\u00e9sister aux charges ou forces appliqu\u00e9es et conserver sa forme d’origine.<\/span><\/p>\n

La r\u00e9sistance d’un mat\u00e9riau<\/span><\/strong>\u00a0est sa capacit\u00e9 \u00e0 supporter cette charge appliqu\u00e9e sans d\u00e9faillance ni d\u00e9formation plastique.\u00a0Pour la contrainte de traction, la capacit\u00e9 d’un mat\u00e9riau ou d’une structure \u00e0 supporter des charges tendant \u00e0 s’allonger est appel\u00e9e r\u00e9sistance ultime \u00e0 la traction (UTS).\u00a0<\/span>La<\/span><\/a>\u00a0limite d’\u00e9lasticit\u00e9 ou la limite d’\u00e9lasticit\u00e9 est la propri\u00e9t\u00e9 du mat\u00e9riau d\u00e9finie comme la contrainte \u00e0 laquelle un mat\u00e9riau commence \u00e0 se d\u00e9former plastiquement, tandis que la limite d’\u00e9lasticit\u00e9 est le point o\u00f9 la d\u00e9formation non lin\u00e9aire (\u00e9lastique + plastique) commence.\u00a0En cas de contrainte de traction d’une barre uniforme (courbe contrainte-d\u00e9formation), la\u00a0\u00a0<\/span>loi de Hooke<\/span><\/b><\/a>\u00a0d\u00e9crit le comportement d’une barre dans la r\u00e9gion \u00e9lastique.\u00a0Le\u00a0<\/span>module d’\u00e9lasticit\u00e9 de Young<\/span><\/a>\u00a0est le module d’\u00e9lasticit\u00e9 pour les contraintes de traction et de compression dans le r\u00e9gime d’\u00e9lasticit\u00e9 lin\u00e9aire d’une d\u00e9formation uniaxiale et est g\u00e9n\u00e9ralement \u00e9valu\u00e9 par des essais de traction.<\/span><\/p>\n

Voir aussi :\u00a0<\/span>R\u00e9sistance des mat\u00e9riaux<\/span><\/a><\/p>\n

R\u00e9sistance \u00e0 la traction ultime de l’amalgame<\/span><\/h3>\n

La r\u00e9sistance \u00e0 la traction ultime de l’amalgame est de 70 MPa.<\/span><\/p>\n

Limite d’\u00e9lasticit\u00e9 de l’amalgame<\/span><\/h3>\n

La limite d’\u00e9lasticit\u00e9 de l’amalgame\u00a0<\/span>\u00a0<\/strong>est N\/A.<\/span><\/p>\n

Module d’\u00e9lasticit\u00e9 de l’amalgame<\/span><\/h3>\n

Le module d’\u00e9lasticit\u00e9 de Young de l’amalgame est de 40 GPa.<\/span><\/p>\n

Duret\u00e9 de l’amalgame<\/span><\/h3>\n

En science des mat\u00e9riaux, la\u00a0\u00a0<\/span>duret\u00e9<\/span><\/strong><\/a>\u00a0\u00a0est la capacit\u00e9 \u00e0 r\u00e9sister \u00e0\u00a0\u00a0<\/span>l’indentation de surface<\/span><\/strong>\u00a0\u00a0(\u00a0<\/span>d\u00e9formation plastique localis\u00e9e<\/span><\/strong>\u00a0) et\u00a0 aux\u00a0<\/span>rayures<\/span><\/strong>\u00a0.\u00a0<\/span>Le test de duret\u00e9 Brinell<\/span><\/strong><\/a>\u00a0\u00a0est l’un des tests de duret\u00e9 par indentation, qui a \u00e9t\u00e9 d\u00e9velopp\u00e9 pour les tests de duret\u00e9.\u00a0Dans les tests Brinell, un\u00a0\u00a0<\/span>p\u00e9n\u00e9trateur sph\u00e9rique<\/span><\/strong>\u00a0dur est forc\u00e9 sous une charge sp\u00e9cifique dans la surface du m\u00e9tal \u00e0 tester.<\/span><\/p>\n

L’\u00a0 indice de\u00a0<\/span>duret\u00e9 Brinell<\/span><\/strong>\u00a0\u00a0(HB) est la charge divis\u00e9e par la surface de l’indentation.\u00a0Le diam\u00e8tre de l’empreinte est mesur\u00e9 avec un microscope \u00e0 \u00e9chelle superpos\u00e9e.\u00a0Le nombre de duret\u00e9 Brinell est calcul\u00e9 \u00e0 partir de l’\u00e9quation\u00a0:<\/span><\/p>\n

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

La duret\u00e9 Brinell de l’amalgame est d’environ 120 BHN (converti).<\/span><\/p>\n

Voir aussi :\u00a0<\/span>Duret\u00e9 des mat\u00e9riaux<\/span><\/a><\/p>\n

<\/div>
\n

La r\u00e9sistance des mat\u00e9riaux<\/span><\/h3>\n

\"Tableau<\/a><\/span><\/p><\/div><\/div>

\n

\u00c9lasticit\u00e9 des mat\u00e9riaux<\/span><\/h3>\n

\"Tableau<\/a><\/span><\/p><\/div><\/div>

\n

Duret\u00e9 des mat\u00e9riaux<\/span><\/h3>\n

\"Tableau<\/a>\u00a0 <\/span><\/p><\/div><\/div>

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

Propri\u00e9t\u00e9s thermiques de l’amalgame<\/span><\/h2>\n

Amalgame – Point de fusion<\/span><\/h3>\n

Le point de fusion de l’amalgame est de 227\u00a0<\/span><\/strong>\u00b0C<\/span><\/strong>\u00a0.<\/span><\/p>\n

Notez que ces points sont associ\u00e9s \u00e0 la pression atmosph\u00e9rique standard.\u00a0En g\u00e9n\u00e9ral, la\u00a0\u00a0<\/span>fusion<\/span><\/strong>\u00a0\u00a0est un\u00a0\u00a0<\/span>changement de phase<\/span><\/strong>\u00a0\u00a0d’une substance de la phase solide \u00e0 la phase liquide.\u00a0Le\u00a0\u00a0<\/span>point de fusion<\/span><\/strong>\u00a0\u00a0d’une substance est la temp\u00e9rature \u00e0 laquelle ce changement de phase se produit.\u00a0Le\u00a0\u00a0<\/span>point de fusion\u00a0<\/span><\/strong>\u00a0d\u00e9finit \u00e9galement une condition dans laquelle le solide et le liquide peuvent exister en \u00e9quilibre.\u00a0Pour divers compos\u00e9s chimiques et alliages, il est difficile de d\u00e9finir le point de fusion, car il s’agit g\u00e9n\u00e9ralement d’un m\u00e9lange de divers \u00e9l\u00e9ments chimiques.<\/span><\/p>\n

Amalgame – Conductivit\u00e9 thermique<\/span><\/h3>\n

La conductivit\u00e9 thermique de l’amalgame est de\u00a0<\/span>23\u00a0<\/span><\/strong>W\/(m\u00b7K)<\/span><\/strong>\u00a0.<\/span><\/p>\n

Les caract\u00e9ristiques de transfert de chaleur d’un mat\u00e9riau solide sont mesur\u00e9es par une propri\u00e9t\u00e9 appel\u00e9e la\u00a0\u00a0<\/span>conductivit\u00e9 thermique<\/span><\/strong>\u00a0, k (ou \u03bb), mesur\u00e9e en\u00a0\u00a0<\/span>W\/mK<\/span><\/strong>\u00a0.\u00a0C’est une mesure de la capacit\u00e9 d’une substance \u00e0 transf\u00e9rer de la chaleur \u00e0 travers un mat\u00e9riau par\u00a0\u00a0<\/span>conduction<\/span><\/a>\u00a0.\u00a0Notez que\u00a0\u00a0<\/span>la loi de Fourier<\/span><\/strong><\/a>\u00a0\u00a0s’applique \u00e0 toute mati\u00e8re, quel que soit son \u00e9tat (solide, liquide ou gazeux), par cons\u00e9quent, elle est \u00e9galement d\u00e9finie pour les liquides et les gaz.<\/span><\/p>\n

La\u00a0\u00a0<\/span>conductivit\u00e9 thermique<\/span><\/strong><\/a>\u00a0\u00a0de la plupart des liquides et des solides varie avec la temp\u00e9rature.\u00a0Pour les vapeurs, cela d\u00e9pend aussi de la pression.\u00a0En g\u00e9n\u00e9ral:<\/span><\/p>\n

\"conductivit\u00e9<\/a><\/p>\n

La plupart des mat\u00e9riaux sont presque homog\u00e8nes, nous pouvons donc g\u00e9n\u00e9ralement \u00e9crire\u00a0\u00a0<\/span>k = k (T)<\/span><\/em><\/strong>\u00a0.\u00a0Des d\u00e9finitions similaires sont associ\u00e9es aux conductivit\u00e9s thermiques dans les directions y et z (ky, kz), mais pour un mat\u00e9riau isotrope, la conductivit\u00e9 thermique est ind\u00e9pendante de la direction de transfert, kx = ky = kz = k.<\/span><\/p>\n

Amalgame – Chaleur sp\u00e9cifique<\/span><\/h3>\n

La chaleur sp\u00e9cifique de l’amalgame est de 210\u00a0<\/span><\/strong>\u00a0J\/g K<\/span><\/strong>\u00a0.<\/span><\/p>\n

La chaleur sp\u00e9cifique, ou capacit\u00e9 thermique sp\u00e9cifique,\u00a0<\/span><\/strong>\u00a0est une propri\u00e9t\u00e9 li\u00e9e \u00e0\u00a0l’\u00e9nergie interne<\/a><\/strong>\u00a0\u00a0tr\u00e8s importante en thermodynamique.\u00a0Les\u00a0\u00a0propri\u00e9t\u00e9s intensives\u00a0\u00a0<\/strong>c\u00a0<\/em><\/strong>v<\/sub><\/em><\/strong>\u00a0\u00a0et\u00a0\u00a0c\u00a0<\/em><\/strong>p<\/sub><\/em><\/strong>\u00a0\u00a0sont d\u00e9finies pour des substances compressibles pures et simples comme des d\u00e9riv\u00e9es partielles de l’\u00a0\u00a0\u00e9nergie interne\u00a0\u00a0<\/strong>u(T, v)<\/em><\/strong>\u00a0\u00a0et de\u00a0 l’\u00a0enthalpie\u00a0\u00a0<\/strong>h(T, p)<\/em><\/strong>\u00a0, respectivement\u00a0:<\/span>\u00a0<\/strong><\/p>\n

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

o\u00f9 les indices\u00a0\u00a0<\/span>v<\/span><\/strong>\u00a0\u00a0et\u00a0\u00a0<\/span>p<\/span><\/strong>\u00a0\u00a0d\u00e9signent les variables maintenues fixes lors de la diff\u00e9renciation.\u00a0Les propri\u00e9t\u00e9s\u00a0\u00a0<\/span>c\u00a0<\/span>v<\/span><\/sub>\u00a0<\/strong>\u00a0et\u00a0\u00a0<\/span>c\u00a0<\/span>p<\/span><\/sub><\/strong>\u00a0\u00a0sont appel\u00e9es\u00a0\u00a0<\/span>chaleurs sp\u00e9cifiques\u00a0<\/span><\/strong>\u00a0(ou\u00a0\u00a0<\/span>capacit\u00e9s calorifiques<\/span><\/strong>\u00a0) car, dans certaines conditions particuli\u00e8res, elles relient le changement de temp\u00e9rature d’un syst\u00e8me \u00e0 la quantit\u00e9 d’\u00e9nergie ajout\u00e9e par transfert de chaleur.\u00a0Leurs unit\u00e9s SI sont\u00a0\u00a0<\/span>J\/kg K<\/span><\/strong>\u00a0\u00a0ou\u00a0\u00a0<\/span>J\/mol K<\/span><\/strong>\u00a0.<\/span><\/p>\n

<\/div>
\n

Point de fusion des mat\u00e9riaux<\/span><\/h3>\n

\"Tableau<\/a><\/span><\/p><\/div><\/div>

\n

Conductivit\u00e9 thermique des mat\u00e9riaux<\/span><\/h3>\n

\"Tableau<\/a><\/span><\/p><\/div><\/div>

\n

Capacit\u00e9 calorifique des mat\u00e9riaux<\/span><\/h3>\n

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

<\/h3>\n

<\/span><\/p><\/div><\/div>

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

Propri\u00e9t\u00e9s et prix des autres mat\u00e9riaux<\/span><\/h2>\n

table-de-mat\u00e9riaux-en-r\u00e9solution-8k<\/span><\/p>\n

<\/div><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

\u00c0 propos de l’amalgame Un amalgame est un alliage de mercure avec un autre m\u00e9tal.\u00a0Il peut s’agir d’un liquide, d’une p\u00e2te molle ou d’un solide, selon la proportion de mercure.\u00a0 R\u00e9sum\u00e9 Nom Amalgame Phase \u00e0 STP solide Densit\u00e9 14000kg\/m3 R\u00e9sistance \u00e0 la traction ultime 70 MPa Limite d’\u00e9lasticit\u00e9 N \/ A Module d’\u00e9lasticit\u00e9 de Young … Read more<\/a><\/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":"\nAmalgame | Propri\u00e9t\u00e9s, Prix & Application | Propri\u00e9t\u00e9s mat\u00e9rielles<\/title>\n<meta name=\"description\" content=\"Un amalgame est un alliage de mercure avec un autre m\u00e9tal.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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