Standards

XB/T 617.8-2023 Active

XB/T 617.8-2023 Method for Chemical Analysis of NdFeB Alloys - Part 8: Determination of Hydrogen Content - Inert-gas fusion-thermal conductivity or infrared absorption method

This document is applicable to the determination of the hydrogen content in neodymium-iron-boron alloys. The measurement range is 0.0005% to 0.20%.

Publish Date: 2023-12-20

XB/T 631-2023 Active

XB/T 631-2023 The chemical analysis method for rare earth composite yttrium zirconium ceramic materials: determination of the contents of zirconia, yttrium oxide, and hafnium oxide

This document is applicable to the determination of the contents of zirconium oxide, yttrium oxide, and hafnium oxide in rare earth composite yttrium zirconium ceramic materials.

Publish Date: 2023-12-20

XB/T 403-2023 Active

XB/T 403-2023 Gadolinium iron alloy

This document is applicable to gadolinium-iron alloys produced by electrolysis and melt-casting methods, and is mainly used for the preparation of rare earth permanent magnet materials such as neodymium-iron-boron alloys.

Publish Date: 2023-12-20

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

XB/T 520-2021 Active

XB/T 520-2021 Cerium-doped gadolinium gallium aluminum garnet polycrystalline scintillator。

This document is applicable to cerium-doped gadolinium gallium aluminum garnet polycrystalline scintillators used in high-energy physics experiments, nuclear medicine imaging, security inspections, nuclear radiation detection, and industrial non-destructive testing.

Publish Date: 2021-12-02

XB/T 519-2021 Active

XB/T 519-2021 cerium sulfide

This document is applicable to cerium sulfide produced by chemical methods using cerium oxide, cerium carbonate, and other compounds as raw materials. It is used as a pigment in industries such as plastics, coatings, enamels, glass, rubber, inks, and construction.

Publish Date: 2021-12-02

XB/T 518-2021 Active

XB/T 518-2021 cerium-zirconium composite oxide

This document is applicable to cerium-zirconium composite oxides produced by chemical methods, which are mainly used in catalysts for vehicle exhaust gas purification and catalysts for the purification of volatile organic waste gas, etc.

Publish Date: 2021-12-02

XB/T 238-2021 Active

XB/T 238-2021 Fluorinated gadolinium

This document is applicable to gadolinium fluoride obtained by chemical methods, which is used for the production of gadolinium metal and gadolinium-iron alloys, etc.

Publish Date: 2021-12-02

XB/T 237-2021 Active

XB/T 237-2021 Fluorinated Praseodymium

This document is applicable to praseodymium fluoride obtained by chemical methods. It is mainly used as a raw material for preparing praseodymium metal, and is also used as an additive for arc carbon rods, for coating organic glass, and as a material for optical coatings, etc.

Publish Date: 2021-12-02