{"id":608108,"date":"2024-11-05T22:40:23","date_gmt":"2024-11-05T22:40:23","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/iso-230712021\/"},"modified":"2024-11-05T22:40:23","modified_gmt":"2024-11-05T22:40:23","slug":"iso-230712021","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/iso\/iso-230712021\/","title":{"rendered":"ISO 23071:2021"},"content":{"rendered":"<p>This document describes methods for the determination of mineralogical phases often present as additives or reaction products in carbon containing or graphitic refractory products by X-ray Diffraction (XRD) using a Bragg-Brentano diffractometer. It includes details of sample preparation and general principles for qualitative and quantitative analysis of mineralogical phase composition. Quantitative determination of a-Si<sub>3<\/sub>N<sub>4<\/sub>, \u00df-Si<sub>3<\/sub>N<sub>4<\/sub>, AlN, aluminium metal, Al<sub>4<\/sub>C<sub>3<\/sub>, silicon metal, boron carbide and BN are described. The problems encountered with some determinations are highlighted.<\/p>\n<p>Additional reduced species present in some refractories could include Al<sub>2<\/sub>O<sub>3<\/sub>\u00b7AlN solid solutions (so called Alons), Si<sub>3<\/sub>N<sub>4<\/sub>\u00b7SiO<sub>2<\/sub> solid solutions and Si<sub>3<\/sub>N<sub>4<\/sub>\u00b7Al<sub>2<\/sub>O<sub>3<\/sub> solid solutions (Sialons). The presence of some of these solid solution components will cause problems with both identification and quantification as they are not well-defined structures.<\/p>\n<p>NOTE\u00a0\u00a0\u00a0\u00a0\u00a0 For rationalisation of nitrogen containing phases, the total nitrogen content, analysed in accordance with EN\u00a012698-1 is used.<\/p>\n","protected":false},"excerpt":{"rendered":"<p><b>Refractory products \u2014 Determination of reduced species in carbon containing refractories by XRD<\/b><\/p>\n<table style=\"width: 100%\" border=\"0\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td>Published By<\/td>\n<td>Publication Date<\/td>\n<td>Number of Pages<\/td>\n<\/tr>\n<tr>\n<td><a href=\"https:\/\/pdfstandards.shop\/product-category\/publishers\/iso\/\"><b>ISO<\/b><\/a><\/td>\n<td>2021-04<\/td>\n<td>12<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":608120,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[1166,2634],"product_tag":[],"class_list":{"0":"post-608108","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-81-080","7":"product_cat-iso","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/608108","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/608120"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=608108"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=608108"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=608108"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}