{"id":2721,"date":"2020-07-10T02:14:59","date_gmt":"2020-07-10T02:14:59","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=2721"},"modified":"2020-10-14T07:39:30","modified_gmt":"2020-10-14T07:39:30","slug":"industrial-ceramic-materials","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/es\/industrial-ceramic-materials\/","title":{"rendered":"Materiales cer\u00e1micos industriales"},"content":{"rendered":"

Las cer\u00e1micas de al\u00famina son los materiales cer\u00e1micos industriales avanzados m\u00e1s utilizados. Gracias a la fuerte uni\u00f3n entre sus \u00e1tomos i\u00f3nicos, la al\u00famina ofrece un buen rendimiento en cuanto a estabilidad qu\u00edmica y t\u00e9rmica, una resistencia relativamente buena y caracter\u00edsticas de aislamiento t\u00e9rmico y el\u00e9ctrico, todo ello a un precio razonable. Gracias a su grado de pureza y al coste relativamente bajo de la materia prima, la al\u00famina puede utilizarse en una amplia gama de aplicaciones en diversos sectores a un precio razonable.<\/p>\n

A diferencia de las cer\u00e1micas tradicionales a base de arcilla y s\u00edlice, las cer\u00e1micas avanzadas de al\u00famina (o cer\u00e1micas modernas, cer\u00e1micas industriales) se utilizan por diversas razones, debido a sus excelentes propiedades mec\u00e1nicas, su resistencia a la corrosi\u00f3n y a la oxidaci\u00f3n, o sus propiedades el\u00e9ctricas, \u00f3pticas y\/o magn\u00e9ticas, as\u00ed como a sus diversas aplicaciones industriales. Todo ello es consecuencia de su composici\u00f3n qu\u00edmica y su microestructura.<\/p>\n

Los materiales cer\u00e1micos industriales avanzados suelen combinarse con enlaces \u201ch\u00edbridos\u201d, es decir, una combinaci\u00f3n de enlaces covalentes, i\u00f3nicos y met\u00e1licos, la mayor\u00eda de los cuales son compuestos met\u00e1licos, metaloides y no met\u00e1licos, como \u00f3xidos, nitruros y carburos.<\/p>\n

Cuando se a\u00f1aden los ingredientes adecuados, como el \u00f3xido de magnesio (MgO), el \u00f3xido de itrio (Y\u2082O\u2083) o el \u00f3xido de calcio (CaO), para controlar la transformaci\u00f3n de fase inicialmente destructiva, la circonia puede convertirse en un material ideal que ofrece una alta resistencia y una gran tenacidad. Las caracter\u00edsticas de la microestructura de cer\u00e1micas de circonio<\/a> lo convierten en un material de ingenier\u00eda de elecci\u00f3n por su resistencia al desgaste, a la corrosi\u00f3n, a los da\u00f1os y a la degradaci\u00f3n en una amplia variedad de aplicaciones.<\/p>\n

\"Materiales<\/p>\n

El carburo de silicio destaca por su dureza, su alto punto de fusi\u00f3n y su elevada conductividad t\u00e9rmica. Es capaz de mantener su resistencia a temperaturas de hasta 1400 \u2103 y ofrece una excelente resistencia al desgaste y a los choques t\u00e9rmicos.<\/p>\n

Cuenta con aplicaciones industriales bien consolidadas y muy extendidas como soportes para catalizadores y filtros de gases calientes o de metal fundido, gracias a su bajo coeficiente de expansi\u00f3n t\u00e9rmica y a su buena resistencia a los choques t\u00e9rmicos, as\u00ed como a su excelente estabilidad mec\u00e1nica y qu\u00edmica en entornos a temperaturas elevadas.<\/p>\n

La cordierita presenta una resistencia superior al choque t\u00e9rmico gracias a su bajo coeficiente intr\u00ednseco de expansi\u00f3n t\u00e9rmica (CET), junto con una refractariedad relativamente alta y una gran estabilidad qu\u00edmica. Por ello, se utiliza a menudo en aplicaciones industriales a alta temperatura, como los intercambiadores de calor para motores de turbina de gas o los soportes de catalizadores con estructura alveolar en los sistemas de escape de los autom\u00f3viles.<\/p>\n

La mullita es muy poco frecuente en la naturaleza, ya que solo se forma en condiciones de alta temperatura y baja presi\u00f3n; por ello, como mineral industrial, la mullita debe obtenerse a partir de alternativas sint\u00e9ticas.<\/p>\n

La mullita es un material muy prometedor para la cer\u00e1mica avanzada en los procesos industriales, gracias a sus favorables propiedades t\u00e9rmicas y mec\u00e1nicas: baja expansi\u00f3n t\u00e9rmica, baja conductividad t\u00e9rmica, excelente resistencia a la fluencia, resistencia adecuada a altas temperaturas y una estabilidad excepcional en entornos qu\u00edmicos agresivos.<\/p>","protected":false},"excerpt":{"rendered":"

Alumina ceramics are the most widely used advanced industrial ceramic materials. Due to its highly strong bond between ionic atoms, alumina provides good performance in…<\/p>","protected":false},"author":1,"featured_media":5548,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[837,836],"class_list":["post-2721","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-alumina-foam-ceramic","tag-industrial-ceramic-materials"],"yoast_head":"\nIndustrial Ceramic Materials | Alumina Foam Ceramic<\/title>\n<meta name=\"description\" content=\"Alumina ceramics are the most widely used advanced industrial ceramic materials. 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