{"id":7964,"date":"2025-09-16T15:27:42","date_gmt":"2025-09-16T13:27:42","guid":{"rendered":"https:\/\/www.redhillballs.com\/?page_id=7964"},"modified":"2025-09-29T10:36:29","modified_gmt":"2025-09-29T08:36:29","slug":"esferas-de-liga-de-platina-iridio","status":"publish","type":"page","link":"https:\/\/www.redhillballs.com\/pt-pt\/produtos\/esferas-de-metais-nobres\/esferas-de-liga-de-platina-iridio\/","title":{"rendered":"Esferas de liga de platina\u2013ir\u00eddio (Pt\u2013Ir)"},"content":{"rendered":"<h2>\ud83d\udee0\ufe0f <a href=\"https:\/\/en.wikipedia.org\/wiki\/Platinum%E2%80%93iridium_alloy\">Esferas de liga de platina\u2013ir\u00eddio \u2013 ultraest\u00e1veis, inertes, de precis\u00e3o<\/a><\/h2>\n<p>As Esferas de liga de platina\u2013ir\u00eddio (Pt\u2013Ir) combinam in\u00e9rcia qu\u00edmica excepcional com densidade muito elevada e not\u00e1vel estabilidade dimensional. A adi\u00e7\u00e3o de ir\u00eddio endurece a platina para resist\u00eancia superior ao desgaste, preservando o comportamento n\u00e3o magn\u00e9tico e sem escurecimento\u2014ideal para contactos de precis\u00e3o, dosagem e sistemas de fluidos de alta pureza em ambientes exigentes.<\/p>\n<h3>\ud83d\udd27 Especifica\u00e7\u00f5es t\u00e9cnicas principais<\/h3>\n<ul>\n<li><strong>Composi\u00e7\u00e3o<\/strong>: Pt com Ir (tip. 90\/10 a 80\/20)<\/li>\n<li><strong>Estrutura<\/strong>: solu\u00e7\u00e3o s\u00f3lida de metal nobre CFC (FCC)<\/li>\n<li><strong>Dureza<\/strong>: ~180\u2013250 HV (dependente do grau\/condi\u00e7\u00e3o)<\/li>\n<li><strong>Densidade<\/strong>: ~21,3\u201321,7 g\/cm\u00b3<\/li>\n<li><strong>Faixa de fus\u00e3o<\/strong>: ~1800\u20131900 \u00b0C (dependente da liga)<\/li>\n<li><strong>El\u00e9trico<\/strong>: boa condutividade; <strong>Magn\u00e9tico<\/strong>: n\u00e3o magn\u00e9ticas<\/li>\n<li><strong>Corros\u00e3o<\/strong>: excelente na maioria dos \u00e1cidos, cloretos e atmosferas de alta temperatura<\/li>\n<\/ul>\n<h3>\u2705 Vantagens<\/h3>\n<ul>\n<li><strong>In\u00e9rcia qu\u00edmica extrema<\/strong> &amp; superf\u00edcie sem escurecimento<\/li>\n<li><strong>Alta densidade<\/strong> para veda\u00e7\u00e3o positiva e movimento est\u00e1vel<\/li>\n<li><strong>Maior resist\u00eancia ao desgaste<\/strong> vs. platina pura<\/li>\n<li><strong>Estabilidade t\u00e9rmica<\/strong> numa ampla faixa de temperaturas<\/li>\n<\/ul>\n<h3>\ud83d\udd04 Aplica\u00e7\u00f5es das Esferas de liga de platina\u2013ir\u00eddio<\/h3>\n<ul>\n<li><strong>V\u00e1lvulas de precis\u00e3o &amp; dosagem<\/strong> em meios de alta pureza\/agressivos<\/li>\n<li><strong>Contactos el\u00e9tricos &amp; sensores<\/strong> com ru\u00eddo baixo e est\u00e1vel<\/li>\n<li><strong>Dispositivos m\u00e9dicos &amp; de laborat\u00f3rio<\/strong><\/li>\n<li><strong>Metrologia &amp; instrumenta\u00e7\u00e3o<\/strong> exigindo estabilidade a longo prazo<\/li>\n<\/ul>\n<h3>\ud83d\udce6 Graus &amp; tamanhos dispon\u00edveis<\/h3>\n<ul>\n<li><a href=\"https:\/\/www.redhillballs.com\/company\/precision-grades\/\"><strong>Graus<\/strong>: ISO 3290, DIN 5401, AFBMA (toler\u00e2ncias equivalentes)<\/a><\/li>\n<li><strong>Intervalo de di\u00e2metros<\/strong>: tamanhos padr\u00e3o em polegadas e m\u00e9tricos; tamanhos n\u00e3o padr\u00e3o\/personalizados mediante solicita\u00e7\u00e3o<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\ud83d\udee0\ufe0f Esferas de liga de platina\u2013ir\u00eddio \u2013 ultraest\u00e1veis, inertes, de precis\u00e3o As Esferas de liga de platina\u2013ir\u00eddio (Pt\u2013Ir) combinam in\u00e9rcia qu\u00edmica excepcional com densidade muito elevada e not\u00e1vel estabilidade dimensional. A adi\u00e7\u00e3o de ir\u00eddio endurece a platina para resist\u00eancia superior ao desgaste, preservando o comportamento n\u00e3o magn\u00e9tico e sem escurecimento\u2014ideal para contactos de precis\u00e3o, dosagem [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":9208,"parent":7924,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-7964","page","type-page","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.8 (Yoast SEO v28.8) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Esferas de liga de platina\u2013ir\u00eddio \u2013 precis\u00e3o e densidade<\/title>\n<meta name=\"description\" content=\"Esferas de liga de platina\u2013ir\u00eddio oferecem alta densidade, resist\u00eancia \u00e0 corros\u00e3o e m\u00e1xima precis\u00e3o em aplica\u00e7\u00f5es industriais e cient\u00edfica\" \/>\n<meta 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