ISO 4491-2:2023 金属粉末 还原法测定氧含量 第2部分：氢还原时的质量损失（氢损）

标准编号：ISO 4491-2:2023

中文名称：金属粉末 还原法测定氧含量 第2部分：氢还原时的质量损失（氢损）

英文名称：Metallic powders — Determination of oxygen content by reduction methods — Part 2: Loss of mass on hydrogen reduction (hydrogen loss)

发布日期：2023-04

标准范围

本文件规定了一种测定金属粉末在特定条件下在纯干燥氢气流中加热时所经历的相对质量损失的方法。该测试的目的是评估对粉末冶金工业重要的化学粉末特性。该检测不是测定特定元素含量的方法（见附录？A和ISO？4491-1）。本试验方法适用于表中所列金属的未合金化、部分合金化和完全合金化粉末？1（见7.2.1）。它不适用于润滑粉末或金属粉末的混合物。

This document specifies a method for the determination of the relative loss of mass which a metallic powder undergoes when heated in a stream of pure dry hydrogen under specified conditions.

The purpose of this test is to evaluate a chemical powder characteristic which is of importance to the powder metallurgical industry. The test is not intended as a means for the determination of the content of specific elements (see Annex A and ISO 4491-1).

The test method is applicable to unalloyed, partially alloyed and completely alloyed powders of the metals listed in Table 1 (see 7.2.1). It is not applicable to lubricated powders or to mixtures of metal powders.

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