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现行 EN ISO 21068-1:2024
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Chemical analysis of raw materials and refractory products containing silicon-carbide, silicon-nitride, silicon-oxynitride and sialon - Part 1: General information, terminology and sample preparation (ISO 21068-1:2024) 含碳化硅、氮化硅、氮氧化硅和赛隆的原材料和耐火制品的化学分析第1部分:一般信息、术语和样品制备
发布日期: 2024-05-15
实施日期: 2024-05-15
本文件给出了含碳化硅原料和耐火产品化学分析样品制备的定义和技术,包括: a) SiC原料; b) 含碳化硅的石墨砖; c) 碳化硅砖(包括含氮化硅、氮氧化硅、赛隆的砖); d) 含有碳和/或碳化硅与粘土混合的耐火材料; e) 含有碳和/或碳化硅与二氧化硅(和熔融二氧化硅)混合的耐火材料; f) 含有碳和/或碳化硅与高氧化铝材料混合的耐火材料; g) 含有碳和/或碳化硅与氧化镁(和白云石)混合的耐火材料; h) 含有碳和/或碳化硅与铬矿物或镁铬材料混合的耐火材料; i) 除上述a)至h)中所述的耐火材料外,含有碳和/或碳化硅的耐火材料。 ISO 21068-2、ISO 21068-3和ISO 21068-4中描述的分析项目如下: --干燥损失(LOD); --烧失量(LOI); --总碳,Ctotal; --游离碳,Cfree; --碳化硅; --游离硅(Sifree); --自由铝(Alfrede); --游离镁(Mgfree); --游离铁(Fefree); --二氧化硅(IV)(SiO2); --氧化铝(III)(Al2O3); --氧化铁(III)(Fe2O3); --氧化钛(IV)(TiO2); --氧化钙(CaO); --氧化镁(MgO); --氧化钠(Na2O); --氧化钾(K2O); --氧化铬(III)(Cr2O3); --氧化锆(IV)(ZrO2); --氧化硼(以B2O3计算的总硼); --氮; --氧气; --氮化物(未分化:Si3N4、AlN、BN、赛隆、氮氧化物等); --矿物相(XRD法)。
This document gives definitions and specifies techniques for the preparation of samples for the chemical analysis of silicon-carbide-containing raw materials and refractory products including: a)       SiC raw materials; b)       graphite brick containing silicon carbide; c)        silicon carbide brick (includes the bricks containing silicon nitride, silicon oxynitride, sialon); d)       refractories containing carbon and/or silicon carbide mixed with clay; e)       refractories containing carbon and/or silicon carbide mixed with silica (and fused silica); f)         refractories containing carbon and/or silicon carbide mixed with high alumina material; g)       refractories containing carbon and/or silicon carbide mixed with magnesia (and dolomite); h)       refractories containing carbon and/or silicon carbide mixed with chrome mineral or magnesia-chrome materials; i)         refractories containing carbon and/or silicon carbide except those described in a) to h) above. The items of analysis described in ISO 21068-2, ISO 21068-3 and ISO 21068-4 are as follows: —     loss on drying (LOD); —     loss on ignition (LOI); —     total carbon, Ctotal; —     free carbon, Cfree; —     silicon carbide, SiC; —     free silicon (Sifree); —     free aluminium (Alfree); —     free magnesium (Mgfree); —     free iron (Fefree); —     silicon(IV) dioxide (SiO2); —     aluminium(III) oxide (Al2O3); —     iron(III) oxide (Fe2O3); —     titanium(IV) oxide (TiO2); —     calcium oxide (CaO); —     magnesium oxide (MgO); —     sodium oxide (Na2O); —     potassium oxide (K2O); —     chromium(III) oxide (Cr2O3); —     zirconium(IV) oxide (ZrO2); —     boron oxide (total boron calculated as B2O3); —     nitrogen; —     oxygen; —     nitrides (undifferentiated: Si3N4, AlN, BN, sialon, oxy-nitrides, etc.); —     mineralogical phases (XRD-methods).
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归口单位: CEN/TC 187
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