ISO 19950:2015 PDF
Aluminium oxide primarily used for the production of aluminium — Determination of alpha alumina content — Method using X-ray diffraction net peak areas
Aluminium oxide primarily used for the production of aluminium — Determination of alpha alumina content — Method using X-ray diffraction net peak areas
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 8
- Дата публикации:
- 25 ноября 2015 г.
- Издание:
- ISO IS 19950 edition 1 version 1
- ICS:
- 71.100.10
ISO 19950:2015 sets out an X-ray diffraction method for the determination of the alpha alumina content of smelter grade alumina. The method is applicable to smelter grade alumina containing alpha phase at levels up to 50 %. The percentage by mass of alpha alumina is determined on an "as received" basis.
Abstract
Overview
ISO 19950:2015 specifies an X‑ray diffraction (XRD) method for determining the alpha alumina (α-Al2O3) content in smelter grade alumina. The method measures net peak areas of the corundum reflections and is applicable for samples containing up to 50% alpha phase, reported on an “as received” mass basis. ISO 19950:2015 is based on Australian Standard AS 2879.3‑2010 and provides procedural detail for calibration, sample preparation, measurement and calculation.
Key topics and technical requirements
- Principle: Measure integrated peak areas of the (012) and (116) alpha‑Al2O3 reflections and compare with a 100% alpha alumina calibration standard to compute percent alpha by mass.
- Calibration standard: Use a certified commercial 100% alpha alumina standard or prepare an in‑house standard by acid washing and high‑temperature calcination (1 300 ± 50 °C) as described.
- Sample preparation:
- Representative sampling per AS 4538.2.
- Grind to particle size with 90%
Технические детали
- Технический комитет
- ISO/TC 226 - Materials for the production of primary aluminium
- SKU
- ISO 19950:2015
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