{"id":649,"date":"2023-03-07T13:28:38","date_gmt":"2023-03-07T05:28:38","guid":{"rendered":"http:\/\/vhandy.com\/?p=649"},"modified":"2023-03-07T13:46:21","modified_gmt":"2023-03-07T05:46:21","slug":"alumina-ceramics-turn-yellow","status":"publish","type":"post","link":"https:\/\/vhandy.com\/fr\/alumina-ceramics-turn-yellow\/","title":{"rendered":"Pourquoi les c\u00e9ramiques d'alumine prennent-elles une couleur jaune ?"},"content":{"rendered":"

[et_pb_section fb_built=”1″ admin_label=”Stats” _builder_version=”4.19.5″ _module_preset=”default” background_color=”#FFFFFF” background_enable_pattern_style=”on” background_pattern_style=”tufted” background_pattern_color=”rgba(0,0,0,0.11)” min_height=”705.5px” custom_margin_tablet=”” custom_margin_phone=”||25px||false|false” custom_margin_last_edited=”on|phone” custom_padding=”66px||48px||false|false” collapsed=”on” global_colors_info=”{%22gcid-6bb521d5-2649-4d07-a59b-3ce6a3808f81%22:%91%22background_color%22%93}”][et_pb_row _builder_version=”4.19.5″ _module_preset=”default” z_index=”10″ custom_margin=”-54px|auto|-3px|auto||” custom_padding=”||0px||false|false” global_colors_info=”{}”][et_pb_column type=”4_4″ _builder_version=”4.19.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_text content_tablet=”<\/p>\n

Base In China<\/span>
Serve the World<\/span><\/h2>\n

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<\/h2>\n

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Pourquoi les c\u00e9ramiques d'alumine prennent-elles une couleur jaune ?<\/h1>\n

[\/et_pb_text][et_pb_text _builder_version=”4.20.1″ _module_preset=”default” text_text_color=”#000000″ custom_margin=”7px||29px||false|false” global_colors_info=”{}”]<\/p>\n

La c\u00e9ramique d'alumine est un mat\u00e9riau c\u00e9ramique dont la principale phase cristalline est l'Al2O3. En raison de son point de fusion \u00e9lev\u00e9, de sa grande duret\u00e9, de sa r\u00e9sistance \u00e0 la chaleur, de sa r\u00e9sistance \u00e0 la corrosion et de ses caract\u00e9ristiques d'isolation \u00e9lectrique, elle peut \u00eatre utilis\u00e9e dans des conditions plus difficiles. Les c\u00e9ramiques d'alumine ont un co\u00fbt de production plus faible et une technologie de production mature. C'est actuellement l'un des mat\u00e9riaux c\u00e9ramiques dont les exportations sont les plus importantes et dont la gamme d'applications est la plus large. Elle est principalement utilis\u00e9e dans les domaines des outils de coupe, des pi\u00e8ces r\u00e9sistantes \u00e0 l'usure et des bioc\u00e9ramiques. Elle est \u00e9galement largement utilis\u00e9e dans les domaines de l'\u00e9nergie, de l'a\u00e9rospatiale, de la chimie et de l'\u00e9lectronique. En particulier, la porcelaine d'alumine 95 et la porcelaine 99, qu'il s'agisse de c\u00e9ramiques structurelles ou de c\u00e9ramiques \u00e9lectroniques, sont l'un des mat\u00e9riaux c\u00e9ramiques les plus utilis\u00e9s et les plus r\u00e9pandus.<\/p>\n

[\/et_pb_text][et_pb_image src=”http:\/\/vhandy.com\/wp-content\/uploads\/2023\/03\/ceramic-parts3.webp” title_text=”20211206_171515″ align=”center” _builder_version=”4.20.1″ _module_preset=”default” global_colors_info=”{}”][\/et_pb_image][\/et_pb_column][\/et_pb_row][et_pb_row admin_label=”Row” _builder_version=”4.20.0″ _module_preset=”default” min_height=”507.5px” custom_margin=”-5px|auto|-45px|auto|false|false” custom_padding=”29px||10px||false|false” global_colors_info=”{}”][et_pb_column type=”4_4″ admin_label=”Column” _builder_version=”4.19.0″ _module_preset=”default” custom_padding_tablet=”60px||||false|false” custom_padding_phone=”60px||||false|false” custom_padding_last_edited=”on|tablet” global_colors_info=”{}”][et_pb_text _builder_version=”4.20.1″ _module_preset=”default” text_text_color=”#000000″ global_colors_info=”{}”]<\/p>\n

La pr\u00e9paration des c\u00e9ramique d'alumine<\/a> <\/strong>Les produits alimentaires passent par de nombreux processus de production. Au cours de ce processus, les possibilit\u00e9s de contact des mat\u00e9riaux avec les machines, les \u00e9quipements, les outils, les ustensiles et l'environnement sont plus nombreuses. Par cons\u00e9quent, les facteurs de pollution et les probl\u00e8mes de qualit\u00e9 de la porcelaine sont plus nombreux. Vhandy Ceramic analysera le jaunissement des c\u00e9ramiques d'alumine.<\/p>\n

Normalement, les c\u00e9ramiques d'alumine sont blanches apr\u00e8s la cuisson, mais elles apparaissent souvent jaune p\u00e2le. Le r\u00e9dacteur en chef a \u00e9galement appris des initi\u00e9s de l'industrie que ce ph\u00e9nom\u00e8ne est d'autant plus \u00e9vident que la teneur en alumine et la densit\u00e9 de la porcelaine sont \u00e9lev\u00e9es. En outre, la porcelaine change de couleur apr\u00e8s avoir \u00e9t\u00e9 expos\u00e9e \u00e0 la lumi\u00e8re du soleil. Par rapport \u00e0 la porcelaine non irradi\u00e9e, elle sera l\u00e9g\u00e8rement jaune, et avec l'augmentation du temps d'exposition, la couleur deviendra plus fonc\u00e9e.<\/p>\n

Analyse des causes du jaunissement des c\u00e9ramiques d'alumine<\/p>\n

De nombreuses personnes ont effectu\u00e9 des tests de d\u00e9tection \u00e0 ce sujet et ont constat\u00e9 qu'il y a pas de diff\u00e9rence \u00e9vidente dans les oligo-\u00e9l\u00e9ments internes<\/strong>. \u00c0 l'heure actuelle, aucune raison exacte n'a \u00e9t\u00e9 trouv\u00e9e pour expliquer ce ph\u00e9nom\u00e8ne, mais on estime g\u00e9n\u00e9ralement que les raisons suivantes peuvent \u00eatre invoqu\u00e9es :<\/p>\n

(1) Apr\u00e8s l'irradiation du soleil, la composition interne change, et ce changement est irr\u00e9versible, de sorte que la couleur change \u00e9galement.<\/p>\n

(2) Il se peut que la c\u00e9ramique d'alumine soit d\u00e9liquescente, ce qui produit de l'alumine hydrat\u00e9e. En fait, les produits c\u00e9ramiques ne sont pas les seuls \u00e0 pr\u00e9senter cette caract\u00e9ristique, d'autres mat\u00e9riaux la pr\u00e9sentent \u00e9galement, de sorte que nous ne pouvons surmonter la d\u00e9coloration des c\u00e9ramiques de pr\u00e9cision \u00e0 base d'alumine qu'en minimisant l'influence des facteurs externes.<\/p>\n

(3) Les c\u00e9ramiques \u00e0 haute teneur en alumine sup\u00e9rieure \u00e0 99 sont principalement fritt\u00e9es en phase solide, et l'adjuvant de frittage est fondu dans les cristaux d'oxyde et enrichi sur les joints de grains, ce qui entra\u00eene une diminution de la puret\u00e9 des cristaux et une coloration \u00e0 base de jaune, et En raison de d\u00e9fauts du r\u00e9seau de surface et d'autres raisons, la surface est dans un \u00e9tat m\u00e9ta-stable, qui est facile \u00e0 adsorber diverses substances fines et \u00e0 se d\u00e9colorer.<\/p>\n

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Contact<\/h2>\n

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*Vos coordonn\u00e9es ne seront pas communiqu\u00e9es \u00e0 des tiers.<\/span><\/p>\n

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Shenyang Vhandy Technology Co. Ltd.<\/span><\/h6>\n

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Room 401, D11 Block (Shenyang International Software Park), Shenyang, Liaoning, Chine<\/span><\/p>\n

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Courriel<\/h6>\n

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vhandy@vhandy.com<\/span><\/a><\/p>\n

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Phone\/WeChat<\/h6>\n

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0086-17702411651<\/span><\/p>\n

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T\u00e9l<\/h6>\n

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0086-24-31501218<\/span><\/p>\n

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[display_ip]<\/div>\n

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La c\u00e9ramique d'alumine est un mat\u00e9riau c\u00e9ramique dont la principale phase cristalline est l'Al2O3. En raison de son point de fusion \u00e9lev\u00e9, de sa grande duret\u00e9, de sa r\u00e9sistance \u00e0 la chaleur, de sa r\u00e9sistance \u00e0 la corrosion et de ses caract\u00e9ristiques d'isolation \u00e9lectrique, elle peut \u00eatre utilis\u00e9e dans des conditions plus difficiles.<\/p>","protected":false},"author":1,"featured_media":652,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"","_et_gb_content_width":"2880","footnotes":""},"categories":[10],"tags":[14,17],"class_list":["post-649","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","tag-alumina","tag-alumina-ceramic"],"_links":{"self":[{"href":"https:\/\/vhandy.com\/fr\/wp-json\/wp\/v2\/posts\/649","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vhandy.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/vhandy.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/vhandy.com\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/vhandy.com\/fr\/wp-json\/wp\/v2\/comments?post=649"}],"version-history":[{"count":0,"href":"https:\/\/vhandy.com\/fr\/wp-json\/wp\/v2\/posts\/649\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/vhandy.com\/fr\/wp-json\/wp\/v2\/media\/652"}],"wp:attachment":[{"href":"https:\/\/vhandy.com\/fr\/wp-json\/wp\/v2\/media?parent=649"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vhandy.com\/fr\/wp-json\/wp\/v2\/categories?post=649"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vhandy.com\/fr\/wp-json\/wp\/v2\/tags?post=649"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}