{"id":12484,"date":"2025-10-14T21:19:35","date_gmt":"2025-10-14T19:19:35","guid":{"rendered":"https:\/\/sxe-consulting.com\/?page_id=12484"},"modified":"2025-10-14T21:19:35","modified_gmt":"2025-10-14T19:19:35","slug":"fused-alumina-definition","status":"publish","type":"page","link":"https:\/\/sxe-consulting.com\/en\/glossaire-industriel\/fused-alumina-definition\/","title":{"rendered":"Fused Alumina - Alumine Fusionn\u00e9e"},"content":{"rendered":"

L\u2019Fused alumina<\/strong>, also known as electro-fused corundum, is a form of aluminium oxide characterized by a high massive, angular crystal structure<\/strong>, obtained by solidification after a complete melting phase.<\/p>\n

<\/p>\n

In-depth definition :<\/strong> Unlike sintering, the smelting process begins with the melting of bauxite (aluminum ore) or high-purity alumina in a electric arc furnace<\/strong> at extreme temperatures (often in excess of 2000\u2218C). The molten material is then poured into molds or left to cool slowly in the furnace to form large crystalline masses. After cooling, these masses are crushed, ground and sized to produce grains with sharp, hard edges<\/strong>.<\/p>\n

Types, Properties and Industrial Applications<\/strong><\/h3>\n

Fused alumina comes in several types, the two main ones being :<\/p>\n

    \n
  1. White Fused Alumina (WFA) :<\/strong> Very high purity (\u226599%). Properties: very high hardness, friability (grains fracture to create new sharp edges), and white color due to the absence of impurities (iron, titanium).<\/li>\n
  2. Brown Fused Alumina (BFA) :<\/strong> Less pure, but very tenacious, thanks to the presence of small quantities of iron and titanium oxides.<\/li>\n<\/ol>\n\n\n\n\n\n\n\n
    Field of application<\/th>\nPreferred type<\/th>\nKey role<\/th>\n<\/tr>\n<\/thead>\n
    High-Performance Abrasives<\/strong><\/td>\nWFA and BFA<\/td>\nExtreme hardness for cutting, grinding, sanding and surface preparation prior to coating.<\/td>\n<\/tr>\n
    Refractories<\/strong><\/td>\nBFA<\/td>\nStable at very high temperatures and resistant to thermal shock, used for lining furnaces and ladles.<\/td>\n<\/tr>\n
    Non-slip<\/strong><\/td>\nBFA<\/td>\nAngular and tenacious grains are incorporated into industrial flooring for safety.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    Fused alumina is the material of choice when you are looking for a maximum hardness for abrasion<\/strong> or a exceptional thermal resistance<\/strong>, properties that are essential to the Industrial Performance<\/strong> in the metalworking, construction and toolmaking sectors.<\/p>\n

    \n

    Key difference: Process and Microstructure<\/strong><\/h3>\n

    The distinction between the two is critical for the choice of refractory material:<\/p>\n

      \n
    • Sintered alumina :<\/strong> Solid-state process (no melting), producing a microstructure of fine, uniform grain<\/strong>, for the mechanical strength<\/strong> and precision components<\/strong>.<\/li>\n
    • Fused Alumina :<\/strong> Processes in the liquid state (melting and crystallization), producing angular, rough and extremely hard grains<\/strong>, privileged for abrasive and refractory applications<\/strong>.<\/li>\n<\/ul>\n

      <\/p>","protected":false},"excerpt":{"rendered":"

      L’Alumine Fusionn\u00e9e, \u00e9galement appel\u00e9e corindon \u00e9lectro-fondu, est une forme d’oxyde d’aluminium caract\u00e9ris\u00e9e par une structure cristalline massive et angulaire, obtenue par solidification apr\u00e8s une phase de fusion compl\u00e8te.<\/p>","protected":false},"author":1,"featured_media":0,"parent":12324,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_sitemap_exclude":false,"_sitemap_priority":"","_sitemap_frequency":"","footnotes":""},"definition":[99],"class_list":["post-12484","page","type-page","status-publish","hentry","definition-definition"],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/sxe-consulting.com\/en\/wp-json\/wp\/v2\/pages\/12484","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sxe-consulting.com\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/sxe-consulting.com\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/sxe-consulting.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/sxe-consulting.com\/en\/wp-json\/wp\/v2\/comments?post=12484"}],"version-history":[{"count":0,"href":"https:\/\/sxe-consulting.com\/en\/wp-json\/wp\/v2\/pages\/12484\/revisions"}],"up":[{"embeddable":true,"href":"https:\/\/sxe-consulting.com\/en\/wp-json\/wp\/v2\/pages\/12324"}],"wp:attachment":[{"href":"https:\/\/sxe-consulting.com\/en\/wp-json\/wp\/v2\/media?parent=12484"}],"wp:term":[{"taxonomy":"definition","embeddable":true,"href":"https:\/\/sxe-consulting.com\/en\/wp-json\/wp\/v2\/definition?post=12484"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}