GB/T 46762-2025Corrosion test methods for rare earth permanent magnet protective layers (English PDF)
稀土永磁体防护层腐蚀试验方法
This is a limited preview
Buy now to download the full PDF (30 pages)
Need quotation for your management?
Get a formal quotation for GB/T 46762-2025 in 30 minutes.
Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
December 2, 2025
Implementation date
July 1, 2026
Scope
GB/T 46762-2025 is the English-translated version of 稀土永磁体防护层腐蚀试验方法.
GB/T 46762-2025 is the Chinese standard "Corrosion test methods for rare earth permanent magnet protective layers". Its scope clause reads: This document describes the ordinary salt spray corrosion test, the composite salt spray corrosion test, and the artificial sweat corrosion test for the protective layer of rare earth permanent magnets.
Experimental methods. This document applies to various protective layers on the surface of rare earth permanent magnets (including metal coatings, alloy coatings, organic coatings, and various composite coatings).
The corrosion resistance of the coating (including phosphating, zirconium phosphate, and other conversion coatings) was tested. Its clauses include terms and definitions.
Found what you need?
Document preview — GB/T 46762-2025
National Standard of the People's Republic of China
- ICS
- 77.120.99
- Classification
- H 14
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Foreword
- 1 Scope
- 2 Normative references
- 3 Terms and Definitions
- 3.
1 Scope
This document describes the ordinary salt spray corrosion test, the composite salt spray corrosion test, and the artificial sweat corrosion test for the protective layer of rare earth permanent magnets.
Experimental methods.
This document applies to various protective layers on the surface of rare earth permanent magnets (including metal coatings, alloy coatings, organic coatings, and various composite coatings).
The corrosion resistance of the coating (including phosphating, zirconium phosphate, and other conversion coatings) was tested.
2 Normative references
The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included.
For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies.
This document.
GB/T 10125 Corrosion test under artificial atmosphere - Salt spray test
GB/T 10593.2 Methods for measuring environmental parameters of electrical and electronic products - Part 2.Salt spray
GB/T 12967.3 Test methods for anodic oxide films and organic polymer films of aluminum and aluminum alloys - Part 3.Salt spray test
QB/T 3814 Test Methods for the Appearance Quality of Metal Coatings and Chemical Treatment Layers on Light Industrial Products
3 Terms and Definitions
The terms and definitions defined in GB/T 10125 and GB/T 12967.3, as well as the following terms and definitions, apply to this document.
3.1 ordinary salt-spray test
A corrosion test method that uses salt spray equipment to simulate a salt spray corrosion environment to test the corrosion resistance of materials or products.
Note. This includes both continuous spray and intermittent spray salt spray test environments.
3.2 Composite salt spray corrosion test
Based on the ordinary salt spray test, the test conditions such as temperature, humidity, heat preservation time, and drying were adjusted to simulate corrosion that is closer to actual use.
Corrosion test method.
Note. This includes two salt spray test modes. spray insulation and spray drying.
3.3
A corrosion test method using chemical reagents to simulate the chemical composition and pH value of human sweat.
4 Method 1.Ordinary salt spray corrosion test
4.1 Principle
A humid, accelerated corrosion environment was simulated using a standard salt spray chamber. Based on the corrosion observed on the sample surface, the results were recorded for the samples or products under different conditions.
Corrosion resistance in salt spray environments. […]
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 30 pages — is available in the English PDF.
Referenced standards
Normative references
- GB/T 10125Corrosion tests in artificial atmospheres - Salt spray tests
- GB/T 10593.2Method of the measuring environmental parameters for electric and electronic products - Part 2: Salt mist
- GB/T 12967.3Test methods for anodic oxidation coatings and organic polymer coatings on aluminium and aluminium alloys - Part 3 : Salt spray test
How to Download GB/T 46762-2025
- 1
Add to cart
Click "Download PDF" on this page and choose "Buy this standard". You can add more standards before checkout.
- 2
Checkout
Enter your email and billing details. Payment is processed securely by Stripe (cards or bank transfer). Prefer bank details? Request a quotation (min. order $300).
- 3
Instant delivery (0–9 sec)
Delivery is automatic: within seconds of payment you'll receive an email with a secure download link. The link stays valid for 72 hours.
- 4
Invoice included
A tax invoice is attached to the confirmation email. Need a custom invoice? Contact us.
Related Standards
GB/T 10125-2021 — Corrosion tests in artificial atmospheres - Salt spray tests
GB/T 10593.2-2023 — Method of the measuring environmental parameters for electric and electronic products - Part 2: Salt mist
GB/T 12967.3-2022 — Test methods for anodic oxidation coatings and organic polymer coatings on aluminium and aluminium alloys - Part 3 : Salt spray test
Secure payment via Stripe
Payments accepted
GB/T 46762-2025
$240.00