{"id":371788,"date":"2024-10-20T02:26:20","date_gmt":"2024-10-20T02:26:20","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-iso-230712021\/"},"modified":"2024-10-26T04:14:32","modified_gmt":"2024-10-26T04:14:32","slug":"bs-iso-230712021","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-iso-230712021\/","title":{"rendered":"BS ISO 23071:2021"},"content":{"rendered":"

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 ?-Si3<\/sub>N4<\/sub>, ?-Si3<\/sub>N4<\/sub>, AlN, aluminium metal, Al4<\/sub>C3<\/sub>, silicon metal, boron carbide and BN are described. The problems encountered with some determinations are highlighted.<\/p>\n

Additional reduced species present in some refractories could include Al2<\/sub>O3<\/sub>?AlN solid solutions (so called Alons), Si3<\/sub>N4<\/sub>?SiO2<\/sub> solid solutions and Si3<\/sub>N4<\/sub>?Al2<\/sub>O3<\/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

\n
\n NOTE\n <\/div>\n

For rationalisation of nitrogen containing phases, the total nitrogen content, analysed in accordance with EN 12698-1<\/span><\/span> is used.<\/p>\n<\/div>\n

PDF Catalog<\/h4>\n\n\n\n\n\n\n\n\n\n\n\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
2<\/td>\nNational foreword <\/td>\n<\/tr>\n
6<\/td>\nForeword <\/td>\n<\/tr>\n
7<\/td>\n1 Scope
2 Normative references
3 Terms and definitions <\/td>\n<\/tr>\n
8<\/td>\n4 Apparatus
4.1 X-ray diffractometer
4.2 Software
5 Instrument performance
6 Sampling <\/td>\n<\/tr>\n
9<\/td>\n7 Procedure
7.1 Sample preparation
7.2 Measuring parameters
7.3 Qualitative analysis <\/td>\n<\/tr>\n
10<\/td>\n7.4 Quantitative analysis
7.4.1 General
7.4.2 Quantitative phase determination using Rietveld Refinement <\/td>\n<\/tr>\n
11<\/td>\n7.5 Rationalisation of results
7.5.1 Calculation refinement for \u03b1-Si3N4, \u03b2-Si3N4, Si2ON2, BN and AlN
8 Limitations of method <\/td>\n<\/tr>\n
12<\/td>\n9 Test report <\/td>\n<\/tr>\n
13<\/td>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Refractory products. Determination of reduced species in carbon containing refractories by XRD<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2021<\/td>\n14<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":371796,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2641],"product_tag":[],"class_list":{"0":"post-371788","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-bsi","8":"first","9":"instock","10":"sold-individually","11":"shipping-taxable","12":"purchasable","13":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/371788","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\/371796"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=371788"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=371788"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=371788"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}