ISO 4491-3:1997 PDF
Metallic powders — Determination of oxygen content by reduction methods — Part 3: Hydrogen-reducible oxygen
Metallic powders — Determination of oxygen content by reduction methods — Part 3: Hydrogen-reducible oxygen
- Статус документа:
- Отменён
- Формат:
- Электронный (PDF)
- Количество страниц:
- 9
- Дата публикации:
- 27 марта 1997 г.
- Издание:
- ISO IS 4491 edition 2 version 1
- ICS:
- 77.160
Abstract
Overview
ISO 4491-3:1997 - "Metallic powders - Determination of oxygen content by reduction methods - Part 3: Hydrogen-reducible oxygen" specifies a laboratory method to determine hydrogen-reducible oxygen in metallic powders. The procedure covers powders with oxygen contents from 0.05 % to 3 % (m/m) and is intended for unalloyed, partially or fully alloyed metal powders and mixtures such as hardmetal (carbide + binder). The method is based on reduction in a hydrogen atmosphere, capture of the water produced in methanol, and titration with .
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