Standards

Current Category: CN-XB - Rare earths

Status: All
All Active Pending Replaced Abolished Abolished (Transferred)
Publish Year: 2022
All 2026 2025 2024 2023 2022 2021& Before
XB/T 702-2022 Active

XB/T 702-2022 The electrochemical performance of rare earth-based hydrogen storage alloy powder used in the negative electrode of metal hydride-nickel batteries was tested using a three-electrode system testing method

This document specifies the three-electrode system test method for the electrochemical performance of rare earth-based hydrogen storage alloy powder used in the anode of metal hydride-nickel batteries.

Publish Date: 2022-09-30
XB/T 239-2022 Active

XB/T 239-2022 The fluorinated terbium and dysprosium used in the sintering of NdFeB permanent magnetic materials for grain boundary diffusion

This document is applicable to terbium fluoride and dysprosium fluoride prepared by chemical methods, and then processed by grinding, sieving and other processes. They are used in the production of neodymium iron boron permanent magnetic materials through grain boundary diffusion sintering.

Publish Date: 2022-09-30
XB/T 521-2022 Active

XB/T 521-2022 Superfine Gd oxide powder

This document is applicable to ultra-fine gadolinium oxide powder with an apparent average particle size of no more than 1 μm, which is produced by chemical methods and used in fields such as electronic ceramics, magnetic bubble memory storage materials, thermal spraying, and glass.

Publish Date: 2022-09-30
XB/T 221-2022 Active

XB/T 221-2022 Ammonium cerium(IV) nitrate

This document applies to ceric nitrate ammonium obtained by chemical synthesis and concentration crystallization using ceric carbonate or ceric nitrate, hydrogen peroxide, nitric acid, ammonia water, and ammonium nitrate as the main raw materials. It is mainly used as a catalyst for automobile exhaust gas treatment, a catalyst for organic volatile gas treatment, an oxidant and catalyst for organic synthesis, an etchant in the field of electronic technology, and high-end polishing powder and other products.

Publish Date: 2022-09-30