超清版 GB/T 26050-2024 硬质合金 金属元素含量的测定 X射线荧光光谱法

ICS 77.160
CCS H 16
中华人民共和国国家标准
GB/T 26050—2024
硬质合金 金属元素含量的测定
X 射线荧光光谱法
Hardmetals—Determination of contents of metallic elements—X-ray fluorescence
spectrometry
代替 GB/T 26050—2010
2024-09-29 发布2025-04-01 实施
国家市场监督管理总局
国家标准化管理委员会发 布

目　　次
前言 ····································································································· Ⅲ
1 范围 ·································································································· 1
2 规范性引用文件 ······················································································ 1
3 术语和定义 ··························································································· 1
4 原理 ·································································································· 2
5 干扰元素 ······························································································ 2
6 试剂 ·································································································· 2
7 仪器与设备 ··························································································· 2
8 样品 ·································································································· 2
9 试验步骤 ······························································································ 2
9.1 试料 ······························································································ 2
9.2 平行试验 ························································································· 3
9.3 预处理 ··························································································· 3
9.4 灼烧系数 ························································································· 3
9.5 试样样片的制备 ················································································· 3
9.6 标准样片的制备 ················································································· 4
9.7 测定 ······························································································ 4
10 试验数据处理 ······················································································· 4
11 允许差 ······························································································· 4
12 试验报告 ···························································································· 5


前　　言
本文件按照GB/T 1.1—2020《标准化工作导则　第1 部分：标准化文件的结构和起草规则》的规
定起草。
本文件代替G B / T 2 6 0 5 0 — 2 0 1 0 《硬质合金　X 射线荧光测定金属元素含量　熔融法》。与
GB/T 26050—2010 相比，除结构调整和编辑性改动外，主要技术变化如下：
a） 更改了Cr、Fe、Ni、Ta、Ti、V的测定范围（见第1章，2010年版的第2章）；
b） 更改了原理（见第4章，2010年版的第3章）；
c） 删除了试剂无水过氧化钡、无水碳酸钡、无水四硼酸钠（见2010年版的5.1、5.2）；
d） 增加了试剂无水四硼酸锂+偏硼酸锂混合熔剂（见6.2）；
e） 更改了脱模剂（见6.6，2010年版的5.6）；
f） 增加了“瓷舟、天平”（见7.8、7.9）；
g） 增加了灼烧系数的计算（见9.4）；
h） 更改了试验步骤（见第9章，2010年版的第8章）；
i） 增加了试验数据处理（见第10章）；更改了数值修约规则（见第10章