{"id":163,"count":0,"description":"<div class=\"pt-20\">\r\n\r\n<img class=\"alignright\" src=\"\/wp-content\/uploads\/2025\/02\/a17046a2a3907907b6b0.png\" alt=\"\" width=\"348\" height=\"348\" \/><strong>O que \u00e9 a cer\u00e2mica espin\u00e9lio de aluminato de magn\u00e9sio (MgAl\u2082O\u2084)?<\/strong>\r\n\r\nReaction precursor formulation: MgO\u00b7Al\u2082O\u2083\r\nCommon abbreviation: Spinel (MA)\r\n\r\nMagnesium aluminate spinel ceramic, with the chemical formula MgAl\u2082O\u2084, is an advanced ceramic material widely used for crucibles or as liners in the melting industry. Its main component is MgAl\u2082O\u2084. Its dense and vitrified structure provides higher thermal shock resistance. Magnesium aluminate spinel can be further categorized into magnesia-rich spinel and alumina-rich spinel, based on the varying content of the two key components\u2014magnesia and alumina\u2014in the synthesized spinel.\r\n<p data-start=\"172\" data-end=\"212\"><strong>Propriedades e vantagens do material<\/strong><\/p>\r\n<p class=\"\" data-start=\"213\" data-end=\"314\">Comparado aos refrat\u00e1rios de magn\u00e9sia-cromo, o espin\u00e9lio de aluminato de magn\u00e9sio oferece as seguintes vantagens:<\/p>\r\n\r\n<ul data-start=\"316\" data-end=\"508\">\r\n \t<li class=\"\" data-start=\"316\" data-end=\"446\">\r\n<p class=\"\" data-start=\"318\" data-end=\"446\">Resist\u00eancia superior a atmosferas redutoras (por exemplo, CO), gases contendo enxofre (SO\u2082\/SO\u2083) e vapores de metais alcalinos (K\u2082O, Na\u2082O)<\/p>\r\n<\/li>\r\n \t<li class=\"\" data-start=\"447\" data-end=\"508\">\r\n<p class=\"\" data-start=\"449\" data-end=\"508\">Excelente resist\u00eancia ao choque t\u00e9rmico e \u00e0 corros\u00e3o<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/div>\r\n<a class=\"pro-detail-btn\" href=\"https:\/\/weiert-ceramics.com\/pt\/contact\/\">CONTATE-NOS<\/a>\r\n\r\n<strong>Propriedades do espin\u00e9lio de aluminato de magn\u00e9sio (MA-espin\u00e9lio)<\/strong>\r\n<table border=\"1\" width=\"100%\" cellspacing=\"0\">\r\n<tbody>\r\n<tr>\r\n<td colspan=\"3\" align=\"center\" valign=\"center\" height=\"30\">\r\n<p align=\"center\"><strong>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/strong><strong>\u00a0\u00a0\u00a0<\/strong><strong>P<\/strong><strong>roperties of <\/strong><strong>MA-S<\/strong><strong>pinel<\/strong><strong>\u00a0<\/strong><strong>\u00a0<\/strong><strong>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/strong><strong>WEIERT<\/strong><\/p>\r\n<\/td>\r\n<\/tr>\r\n<tr>\r\n<td colspan=\"3\" align=\"center\" valign=\"center\" height=\"30\">\r\n<p align=\"center\"><strong>\u00a0<\/strong><strong>Sinterizado <\/strong><strong>Composi\u00e7\u00e3o Qu\u00edmica<\/strong><strong>\u00a0<\/strong><\/p>\r\n<\/td>\r\n<\/tr>\r\n<tr>\r\n<td align=\"center\" valign=\"center\" width=\"819\" height=\"30\">MgAl\u2082O\u2084 (%)<\/td>\r\n<td colspan=\"2\" align=\"center\" valign=\"center\" height=\"30\">\r\n<p align=\"center\">98.2<\/p>\r\n<\/td>\r\n<\/tr>\r\n<tr>\r\n<td align=\"center\" valign=\"center\" height=\"30\">CaO (%)<\/td>\r\n<td colspan=\"2\" align=\"center\" valign=\"center\" height=\"30\">\r\n<p align=\"center\">0.48<\/p>\r\n<\/td>\r\n<\/tr>\r\n<tr>\r\n<td align=\"center\" valign=\"center\" height=\"30\">Fe\u2082O\u2083 (%)<\/td>\r\n<td colspan=\"2\" align=\"center\" valign=\"center\" height=\"30\">\r\n<p align=\"center\">&lt; 0.23<\/p>\r\n<\/td>\r\n<\/tr>\r\n<tr>\r\n<td align=\"center\" valign=\"center\" height=\"30\">SiO\u2082 (%)<\/td>\r\n<td colspan=\"2\" align=\"center\" valign=\"center\" height=\"30\">\r\n<p align=\"center\">0.27<\/p>\r\n<\/td>\r\n<\/tr>\r\n<tr>\r\n<td colspan=\"3\" align=\"center\" valign=\"center\" height=\"30\">\r\n<p align=\"center\"><strong>Sinterizado <\/strong><strong>T<\/strong><strong>herm\u00e9tico e <\/strong><strong>P<\/strong><strong>f\u00edsico <\/strong><strong>P<\/strong><strong>propriedades <\/strong><\/p>\r\n<\/td>\r\n<\/tr>\r\n<tr>\r\n<td colspan=\"2\" align=\"center\" valign=\"center\" height=\"30\">Densidade (g\/cm3)<\/td>\r\n<td align=\"center\" valign=\"center\" width=\"818\" height=\"30\">\r\n<p align=\"center\">3.4<\/p>\r\n<\/td>\r\n<\/tr>\r\n<tr>\r\n<td colspan=\"2\" align=\"center\" valign=\"center\" height=\"30\">Condutividade t\u00e9rmica (W\/m.K)<\/td>\r\n<td align=\"center\" valign=\"center\" height=\"30\">\r\n<p align=\"center\">5.9<\/p>\r\n<\/td>\r\n<\/tr>\r\n<tr>\r\n<td colspan=\"2\" align=\"center\" valign=\"center\" height=\"30\">Coeficiente de expans\u00e3o t\u00e9rmica (dL\/L.K.10^6)<\/td>\r\n<td align=\"center\" valign=\"center\" height=\"30\">\r\n<p align=\"center\">7.5<\/p>\r\n<\/td>\r\n<\/tr>\r\n<tr>\r\n<td colspan=\"3\" align=\"center\" valign=\"center\" height=\"30\">\r\n<p align=\"center\"><strong>Propriedades do p\u00f3<\/strong><\/p>\r\n<\/td>\r\n<\/tr>\r\n<tr>\r\n<td colspan=\"2\" align=\"center\" valign=\"center\" height=\"30\">Tamanho de part\u00edcula mediana 50% (10\u207b\u2076 m)<\/td>\r\n<td align=\"center\" valign=\"center\" height=\"30\">\r\n<p align=\"center\">40<\/p>\r\n<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n*Os valores representam propriedades t\u00edpicas do material e podem variar dependendo da configura\u00e7\u00e3o do produto e do processo de fabrica\u00e7\u00e3o. Para mais informa\u00e7\u00f5es, n\u00e3o hesite em nos contatar. <a href=\"https:\/\/weiert-ceramics.com\/pt\/contact\/\">Contate-nos<\/a>.\r\n\r\n<strong>Aplica\u00e7\u00e3o de cer\u00e2mica de espin\u00e9lio de aluminato de magn\u00e9sio<\/strong>\r\nO espin\u00e9lio de aluminato de magn\u00e9sio, com seu baixo coeficiente de expans\u00e3o t\u00e9rmica ap\u00f3s a sinteriza\u00e7\u00e3o, \u00e9 comumente utilizado na fabrica\u00e7\u00e3o de cadinhos e revestimentos para a ind\u00fastria de fundi\u00e7\u00e3o. Por exemplo, cadinhos de espin\u00e9lio de aluminato de magn\u00e9sio s\u00e3o altamente resistentes \u00e0 corros\u00e3o do a\u00e7o neod\u00edmio-ferro-boro fundido e podem ser usados \u200b\u200bpara fundir \u00edm\u00e3s permanentes ou materiais de terras raras. Al\u00e9m disso, ainda existe um potencial significativo inexplorado para a aplica\u00e7\u00e3o de cer\u00e2micas de espin\u00e9lio de aluminato de magn\u00e9sio em processos de fus\u00e3o de ligas.<strong>\r\n<\/strong>\r\n\r\n<strong>Produto de espin\u00e9lio de aluminato de magn\u00e9sio<\/strong>\r\n<div class=\"row pt-20\">\r\n<div class=\"col-md-3 col-sm-6\" style=\"text-align: center\"><img class=\"alignnone\" src=\"\/wp-content\/uploads\/2025\/04\/d60934ad38ba8277d081.jpg\" alt=\"\" width=\"861\" height=\"861\" \/>\r\n<a href=\"https:\/\/weiert-ceramics.com\/pt\/category\/products\/ceramic-crucibles\/magnesium-aluminate-spinel-crucible-mgal2o4\/\"><strong>Cadinho de Espin\u00e9lio MA<\/strong><\/a><\/div>\r\n<\/div>\r\n<a class=\"pro-detail-btn\" href=\"https:\/\/weiert-ceramics.com\/pt\/contact\/\">CONTATE-NOS<\/a>","link":"https:\/\/weiert-ceramics.com\/pt\/materials\/magnesium-aluminate-spinel-ceramic-mgal%e2%82%82o%e2%82%84\/","name":"Cer\u00e2mica de espin\u00e9lio de aluminato de magn\u00e9sio (MgAl\u2082O\u2084)","slug":"magnesium-aluminate-spinel-ceramic-mgal%e2%82%82o%e2%82%84","taxonomy":"category","parent":111,"meta":[],"acf":[],"z_taxonomy_image_url":"https:\/\/weiert-ceramics.com\/wp-content\/uploads\/2025\/02\/a17046a2a3907907b6b0.png","yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.1 (Yoast SEO v27.2) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>MA Spinel for High Performance Applications - Weiert Ceramics Technology Co., Ltd.<\/title>\n<meta name=\"description\" content=\"Discover Magnesium Aluminum Spinel, also known as MA Spinel. 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