{"id":116069,"date":"2022-05-09T12:33:10","date_gmt":"2022-05-09T11:33:10","guid":{"rendered":"https:\/\/material-properties.org\/couts-du-zirconium-prix-definition\/"},"modified":"2022-05-13T08:26:33","modified_gmt":"2022-05-13T07:26:33","slug":"couts-du-zirconium-prix-definition","status":"publish","type":"post","link":"https:\/\/material-properties.org\/fr\/couts-du-zirconium-prix-definition\/","title":{"rendered":"Co\u00fbts du zirconium &#8211; Prix &#8211; D\u00e9finition"},"content":{"rendered":"<p><span><div class=\"su-quote su-quote-style-default\"><div class=\"su-quote-inner su-u-clearfix su-u-trim\">Co\u00fbts du zirconium.\u00a0De 2003 \u00e0 2007, alors que les prix du minerai de zircon augmentaient r\u00e9guli\u00e8rement de 360\u00a0$ \u00e0 840\u00a0$ la tonne, le prix du zirconium brut \u00e9tait pass\u00e9 de 39\u00a0900\u00a0$ \u00e0 22\u00a0700\u00a0$ la tonne.<\/div><\/div><\/span><\/p>\n<p><span><div class=\"su-divider su-divider-style-dotted\" style=\"margin:15px 0;border-width:2px;border-color:#999999\"><\/div><\/span><\/p>\n<p><span><div  class=\"lgc-column lgc-grid-parent lgc-grid-100 lgc-tablet-grid-100 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\">\n<figure id=\"attachment_27131\" aria-describedby=\"caption-attachment-27131\" style=\"width: 131px\" class=\"wp-caption alignright\"><a href=\"https:\/\/www.nuclear-power.com\/wp-content\/uploads\/2019\/04\/Nuclear-Fuel-Assembly-min.png\"><img decoding=\"async\" loading=\"lazy\" class=\"wp-image-27131 size-large\" src=\"https:\/\/www.nuclear-power.com\/wp-content\/uploads\/2019\/04\/Nuclear-Fuel-Assembly-min-141x1024.png\" alt=\"Assemblage de combustible nucl\u00e9aire\" width=\"141\" height=\"1024\" \/><\/a><figcaption id=\"caption-attachment-27131\" class=\"wp-caption-text\"><span>Assemblage combustible typique<\/span><\/figcaption><\/figure>\n<p><span>Le zirconium pur est un m\u00e9tal de transition brillant, gris-blanc et solide qui ressemble \u00e0 l&rsquo;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&rsquo;alliage pour sa forte r\u00e9sistance \u00e0 la corrosion.\u00a0<\/span><strong><span>Le zirconium et ses alliages<\/span><\/strong><span>\u00a0sont largement utilis\u00e9s comme\u00a0<\/span><a href=\"https:\/\/www.nuclear-power.com\/nuclear-power-plant\/nuclear-fuel\/fuel-assembly\/fuel-cladding-cladding-tube\/\"><strong><span>gaine pour les combustibles des r\u00e9acteurs nucl\u00e9aires<\/span><\/strong><\/a><span>.\u00a0Le zirconium alli\u00e9 au niobium ou \u00e0 l&rsquo;\u00e9tain poss\u00e8de d&rsquo;\u00a0<\/span><strong><span>excellentes propri\u00e9t\u00e9s de corrosion<\/span><\/strong><span>.\u00a0La haute r\u00e9sistance \u00e0 la corrosion des alliages de zirconium r\u00e9sulte de la formation naturelle d&rsquo;un oxyde dense et stable \u00e0 la surface du m\u00e9tal.\u00a0Ce film est auto-cicatrisant, il continue \u00e0 se d\u00e9velopper lentement \u00e0 des temp\u00e9ratures allant jusqu&rsquo;\u00e0 environ 550 \u00b0C (1020 \u00b0F) et il reste fermement adh\u00e9rent.\u00a0La propri\u00e9t\u00e9 recherch\u00e9e de ces alliages est \u00e9galement une<\/span><a href=\"https:\/\/www.nuclear-power.com\/nuclear-power\/reactor-physics\/nuclear-engineering-fundamentals\/neutron-nuclear-reactions\/neutron-capture-radiative-capture\/neutron-capture-cross-section\/\"><strong><span>faible section efficace de capture neutronique<\/span><\/strong><\/a><span>.\u00a0Les inconv\u00e9nients du zirconium sont des propri\u00e9t\u00e9s de faible r\u00e9sistance et une faible r\u00e9sistance \u00e0 la chaleur, qui peuvent \u00eatre \u00e9limin\u00e9es, par exemple, en s&rsquo;alliant avec du niobium.<\/span><\/p>\n<h2><span>Co\u00fbts du zirconium<\/span><\/h2>\n<p><span>En termes de co\u00fbt, ces alliages sont \u00e9galement souvent les mat\u00e9riaux de choix pour\u00a0<\/span><a href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/heat-transfer\/heat-exchangers\/\"><span>les \u00e9changeurs de chaleur<\/span><\/a><span>\u00a0et les syst\u00e8mes de tuyauterie pour les industries chimiques et nucl\u00e9aires.\u00a0Le zirconium est un sous-produit de l&rsquo;extraction et du traitement des min\u00e9raux de titane, ainsi que de l&rsquo;extraction de l&rsquo;\u00e9tain.\u00a0De 2003 \u00e0 2007, alors que les prix du minerai de zircon ont augment\u00e9 r\u00e9guli\u00e8rement de 360 \u200b\u200b$ \u00e0 840 $ la tonne, le prix du m\u00e9tal zirconium brut a diminu\u00e9 de 39\u00a0900 $ \u00e0 22\u00a0700 $ la tonne.\u00a0Le zirconium m\u00e9tal est beaucoup plus cher que le zircon car les\u00a0<\/span><strong><span>proc\u00e9d\u00e9s de r\u00e9duction sont co\u00fbteux<\/span><\/strong><span>.\u00a0Tous les co\u00fbts varient consid\u00e9rablement avec une certaine puret\u00e9.<\/span><\/p>\n<h2><span>Production de zirconium<\/span><\/h2>\n<p><span>La production de zirconium m\u00e9tallique n\u00e9cessite des techniques particuli\u00e8res en raison des propri\u00e9t\u00e9s chimiques particuli\u00e8res du zirconium.\u00a0La plupart des m\u00e9taux Zr sont produits \u00e0 partir de zircon (ZrSiO<\/span><sub><span>4<\/span><\/sub><span>) par la r\u00e9duction du chlorure de zirconium avec du magn\u00e9sium m\u00e9tallique dans le\u00a0<\/span><strong><span>proc\u00e9d\u00e9 Kroll<\/span><\/strong><span>.\u00a0La principale caract\u00e9ristique du proc\u00e9d\u00e9 Kroll est la r\u00e9duction du chlorure de zirconium en zirconium m\u00e9tallique par le magn\u00e9sium.\u00a0Le zirconium de qualit\u00e9 commerciale non nucl\u00e9aire contient g\u00e9n\u00e9ralement\u00a0<\/span><strong><span>1 \u00e0 5% d&rsquo;hafnium<\/span><\/strong><span>, dont la section efficace d&rsquo;absorption des neutrons est 600 fois sup\u00e9rieure \u00e0 celle du zirconium.\u00a0L&rsquo;hafnium doit donc \u00eatre presque enti\u00e8rement \u00e9limin\u00e9 (r\u00e9duit \u00e0 &lt; 0,02 % de l&rsquo;alliage) pour les applications en r\u00e9acteur.<\/span><\/p>\n<h2><span>Alliages de zirconium dans l&rsquo;industrie nucl\u00e9aire<\/span><\/h2>\n<figure id=\"attachment_29906\" aria-describedby=\"caption-attachment-29906\" style=\"width: 161px\" class=\"wp-caption alignright\"><a href=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/07\/Fuel-Clad-and-Pellets.png\"><img decoding=\"async\" loading=\"lazy\" class=\"size-medium wp-image-29906\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/07\/Fuel-Clad-and-Pellets-171x300.png\" alt=\"\" width=\"171\" height=\"300\" \/><\/a><figcaption id=\"caption-attachment-29906\" class=\"wp-caption-text\"><span>La gaine de combustible a typiquement un rayon int\u00e9rieur de rZr,2 = 0,408 cm et un rayon ext\u00e9rieur rZr,1 = 0,465 cm.<\/span><\/figcaption><\/figure>\n<p><strong><span>La gaine de combustible<\/span><\/strong><span>\u00a0est la couche externe des barres de combustible, situ\u00e9e entre le\u00a0<\/span><strong><span>caloporteur du r\u00e9acteur<\/span><\/strong><span>\u00a0et le\u00a0<\/span><a href=\"https:\/\/www.nuclear-power.com\/nuclear-power-plant\/nuclear-fuel\/\"><strong><span>combustible nucl\u00e9aire<\/span><\/strong>\u00a0<\/a><span>(c&rsquo;est-\u00e0-dire\u00a0<\/span><a href=\"https:\/\/www.nuclear-power.com\/nuclear-power-plant\/nuclear-fuel\/fuel-assembly\/fuel-pellets\/\"><strong><span>les pastilles de combustible<\/span><\/strong><\/a><span>).\u00a0Il est constitu\u00e9 d&rsquo;un mat\u00e9riau r\u00e9sistant \u00e0 la corrosion \u00e0 faible section efficace d&rsquo;absorption des\u00a0<\/span><a href=\"https:\/\/www.nuclear-power.com\/nuclear-power\/reactor-physics\/atomic-nuclear-physics\/fundamental-particles\/neutron\/thermal-neutron\/\"><span>neutrons thermiques<\/span><\/a><span> (~ 0,18 \u00d7 10<\/span><sup><span>\u201324<\/span><\/sup><span> cm<\/span><sup><span>2<\/span><\/sup><span>), g\u00e9n\u00e9ralement en\u00a0<\/span><strong><span>alliage de zirconium<\/span><\/strong><span>.\u00a0La gaine de combustible a typiquement un rayon int\u00e9rieur de <\/span><strong><span>r<\/span><sub><span>Zr,2<\/span><\/sub><span> = 0,408 cm<\/span><\/strong><span> et un rayon ext\u00e9rieur <\/span><strong><span>r<\/span><sub><span>Zr,1<\/span><\/sub><span> = 0,465 cm<\/span><\/strong><span>.\u00a0Par rapport aux pastilles de combustible, il n&rsquo;y a presque pas de g\u00e9n\u00e9ration de chaleur dans la gaine de combustible (la gaine est\u00a0\u00a0<\/span><a title=\"Lib\u00e9ration d'\u00e9nergie de la fission\" href=\"https:\/\/www.nuclear-power.com\/nuclear-power\/fission\/energy-release-from-fission\/\"><span>l\u00e9g\u00e8rement chauff\u00e9e par rayonnement<\/span><\/a><span>).\u00a0Toute la chaleur g\u00e9n\u00e9r\u00e9e dans le combustible doit \u00eatre transf\u00e9r\u00e9e par <\/span><strong><span>conduction<\/span><\/strong><span> \u00e0 travers la gaine et, par cons\u00e9quent, la surface int\u00e9rieure est plus chaude que la surface ext\u00e9rieure.<\/span><\/p>\n<p><span>Une composition typique d&rsquo;alliages de zirconium de qualit\u00e9 nucl\u00e9aire comprend plus de 95 % en poids de zirconium et moins de 2 % d&rsquo;\u00e9tain, de niobium, de fer, de chrome, de nickel et d&rsquo;autres m\u00e9taux, qui sont ajout\u00e9s pour am\u00e9liorer les propri\u00e9t\u00e9s m\u00e9caniques et la r\u00e9sistance \u00e0 la corrosion.\u00a0L&rsquo;alliage le plus couramment utilis\u00e9, \u00e0 ce jour, dans les REP, a \u00e9t\u00e9 le Zircaloy 4, mais il est actuellement remplac\u00e9 par de nouveaux alliages \u00e0 base de zirconium-niobium, pr\u00e9sentant une meilleure r\u00e9sistance \u00e0 la corrosion.\u00a0La temp\u00e9rature maximale \u00e0 laquelle les alliages de zirconium peuvent \u00eatre utilis\u00e9s dans les r\u00e9acteurs refroidis \u00e0 l&rsquo;eau d\u00e9pend de leur r\u00e9sistance \u00e0 la corrosion.\u00a0Les alliages de zirconium les plus courants, Zircaloy-2 et Zircaloy-4, contiennent les puissants stabilisants \u03b1 \u00e9tain et oxyg\u00e8ne, ainsi que les stabilisants \u03b2 fer, chrome et nickel.\u00a0Les alliages de type Zircalloy, dans lesquels l&rsquo;\u00e9tain est l&rsquo;\u00e9l\u00e9ment d&rsquo;alliage de base qui permet d&rsquo;am\u00e9liorer leurs propri\u00e9t\u00e9s m\u00e9caniques,\u00a0ont une large diffusion dans le monde.\u00a0Cependant, dans ce cas, la diminution de la r\u00e9sistance \u00e0 la corrosion dans l&rsquo;eau et la vapeur a eu lieu, ce qui a entra\u00een\u00e9 la n\u00e9cessit\u00e9 d&rsquo;un alliage suppl\u00e9mentaire.\u00a0L&rsquo;am\u00e9lioration apport\u00e9e par le niobium additif implique probablement un m\u00e9canisme diff\u00e9rent.\u00a0La r\u00e9sistance \u00e9lev\u00e9e \u00e0 la corrosion des m\u00e9taux alli\u00e9s au niobium dans l&rsquo;eau et la vapeur \u00e0 des temp\u00e9ratures de 400 \u00e0 550 \u00b0C est due \u00e0 leur capacit\u00e9 de passivation avec formation de films protecteurs.<\/span><\/p>\n<p><span>\u00a0<\/span><\/p>\n<p><span><\/span><\/p><\/div><\/div><\/span><\/p>\n<p><span><div  class=\"lgc-column lgc-grid-parent lgc-grid-100 lgc-tablet-grid-100 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\">\n<p><span><div class=\"su-accordion su-u-trim\"><div class=\"su-spoiler su-spoiler-style-default su-spoiler-icon-plus\" data-scroll-offset=\"0\" data-anchor-in-url=\"no\"><div class=\"su-spoiler-title\" tabindex=\"0\" role=\"button\"><span class=\"su-spoiler-icon\"><\/span>R\u00e9f\u00e9rences :<\/div><div class=\"su-spoiler-content su-u-clearfix su-u-trim\">Science des mat\u00e9riaux:<\/div><\/div><\/div><\/span><\/p>\n<p><span>D\u00e9partement am\u00e9ricain de l&rsquo;\u00e9nergie, science des mat\u00e9riaux.\u00a0DOE Fundamentals Handbook, Volume 1 and 2. Janvier 1993.<\/span><br \/>\n<span>US Department of Energy, Material Science.\u00a0DOE Fundamentals Handbook, Volume 2 et 2. Janvier 1993.<\/span><br \/>\n<span>William D. Callister, David G. Rethwisch.\u00a0Science et g\u00e9nie des mat\u00e9riaux : une introduction 9e \u00e9dition, Wiley ;\u00a09 \u00e9dition (4 d\u00e9cembre 2013), ISBN-13\u00a0: 978-1118324578.<\/span><br \/>\n<span>En ligneEberhart, Mark (2003).\u00a0Pourquoi les choses se cassent\u00a0: Comprendre le monde par la mani\u00e8re dont il se d\u00e9compose.\u00a0Harmonie.\u00a0ISBN 978-1-4000-4760-4.<\/span><br \/>\n<span>Gaskell, David R. (1995).\u00a0Introduction \u00e0 la thermodynamique des mat\u00e9riaux (4e \u00e9d.).\u00a0\u00c9ditions Taylor et Francis.\u00a0ISBN 978-1-56032-992-3.<\/span><br \/>\n<span>Gonz\u00e1lez-Vi\u00f1as, W. &amp; Mancini, HL (2004).\u00a0Une introduction \u00e0 la science des mat\u00e9riaux.\u00a0Presse universitaire de Princeton.\u00a0ISBN 978-0-691-07097-1.<\/span><br \/>\n<span>Ashby, Michael;\u00a0Hugh Shercliff;\u00a0David Cebon (2007).\u00a0Mat\u00e9riaux: ing\u00e9nierie, science, traitement et conception (1\u00e8re \u00e9d.).\u00a0Butterworth-Heinemann.\u00a0ISBN 978-0-7506-8391-3.<\/span><br \/>\n<span>JR Lamarsh, AJ Baratta, Introduction au g\u00e9nie nucl\u00e9aire, 3e \u00e9d., Prentice-Hall, 2001, ISBN : 0-201-82498-1.<\/span><br \/>\n<span><\/span><\/p><\/div><\/div><div class=\"su-divider su-divider-style-dotted\" style=\"margin:15px 0;border-width:2px;border-color:#999999\"><\/div><div class=\"su-divider su-divider-style-default\" style=\"margin:15px 0;border-width:2px;border-color:#999999\"><\/div><div  class=\"lgc-column lgc-grid-parent lgc-grid-33 lgc-tablet-grid-33 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\"><\/div><\/div><div  class=\"lgc-column lgc-grid-parent lgc-grid-33 lgc-tablet-grid-33 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\">\n<p><span>Voir ci-dessus:<\/span><br \/>\n<span>Alliages de zirconium \u00a0\u00bb style=\u00a0\u00bbplat\u00a0\u00bb background=\u00a0\u00bb#ffffff\u00a0\u00bb color=\u00a0\u00bb#606060&Prime; size=\u00a0\u00bb5&Prime; radius=\u00a0\u00bb10&Prime; icon=\u00a0\u00bbic\u00f4ne\u00a0: lien\u00a0\u00bb icon_color=\u00a0\u00bb#5d5d5d\u00a0\u00bb text_shadow=\u00a0\u00bb0px 0px 0px #000000&Prime; ][\/su_button]<\/span><\/p><\/div><\/div><div  class=\"lgc-column lgc-grid-parent lgc-grid-33 lgc-tablet-grid-33 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\"><\/div><\/div><\/span><\/p>\n<p><span><div class=\"su-divider su-divider-style-dotted\" style=\"margin:15px 0;border-width:2px;border-color:#999999\"><\/div><\/span><\/p>\n<p><span>Nous esp\u00e9rons que cet article,\u00a0<\/span><strong><span>Co\u00fbts du zirconium &#8211; Prix<\/span><\/strong><span>, vous aidera.\u00a0Si oui,\u00a0<\/span><strong><span>donnez-nous un like<\/span><\/strong><span>\u00a0dans la barre lat\u00e9rale.\u00a0L&rsquo;objectif principal de ce site Web est d&rsquo;aider le public \u00e0 apprendre des informations int\u00e9ressantes et importantes sur les mat\u00e9riaux et leurs propri\u00e9t\u00e9s.<\/span><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Nous esp\u00e9rons que cet article,\u00a0Co\u00fbts du zirconium &#8211; Prix, vous aidera.\u00a0Si oui,\u00a0donnez-nous un like\u00a0dans la barre lat\u00e9rale.\u00a0L&rsquo;objectif principal de ce site Web est d&rsquo;aider le public \u00e0 apprendre des informations int\u00e9ressantes et importantes sur les mat\u00e9riaux et leurs propri\u00e9t\u00e9s. &nbsp;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[53],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Co\u00fbts du Zirconium - Prix - D\u00e9finition | Propri\u00e9t\u00e9s mat\u00e9rielles<\/title>\n<meta name=\"description\" content=\"Co\u00fbts du zirconium. 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