GB/T 30074-2013 English PDF

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GB/T 30074-2013: Method of measurement of hydrogen permeation and determination of hydrogen uptake and transport in metals by an electrochemical technique
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 30074-2013	419	Add to Cart	3 days	Method of measurement of hydrogen permeation and determination of hydrogen uptake and transport in metals by an electrochemical technique	Valid

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Basic data

Standard ID: GB/T 30074-2013 (GB/T30074-2013)
Description (Translated English): Method of measurement of hydrogen permeation and determination of hydrogen uptake and transport in metals by an electrochemical technique
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: H25
Classification of International Standard: 77.060
Word Count Estimation: 18,115
Quoted Standard: GB/T 6682-2008; GB/T 24196-2009
Adopted Standard: ISO 17081-2004, MOD
Regulation (derived from): National Standards Bulletin No. 25 of 2013
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This standard specifies the steady state based on the diffusion of hydrogen in metal fluxes measured results of the evaluation of hydrogen absorption in the metal and the determination of the hydrogen atoms in the metal and the identification of effective

GB/T 30074-2013: Method of measurement of hydrogen permeation and determination of hydrogen uptake and transport in metals by an electrochemical technique

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Method of measurement of hydrogen permeation and determination of hydrogen uptake and transport in metals by an electrochemical technique ICS 77.060 H25 National Standards of People's Republic of China Electrochemical techniques to measure metal hydrogen permeation Method (absorption and migration) of (ISO 17081.2004, MOD) Issued on. 2013-12-17 2014-09-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules. This standard uses redrafted Law Amendment uses ISO 17081.2004 "the use of electrochemical techniques to measure hydrogen permeation (absorption and in the metal Migration) method. " This standard and ISO 17081.2004 compared to the structural changes and the reasons for the existence of the following. --- Swapped some of the terms and definitions in Chapter 3 position, convenient compared to the control; --- Merged suspension section 5.2 and 5.3, to ensure the continuity of the contents; --- Adjustment table "where n is 1 to 6, accuracy has enough" to 11.3.3 after 2 Chinese (6) after the "Where. n take 1 to 6.00, knot If accurate enough. "; --- Merge Chapter 12 e) two paragraphs; Suspension adjustment section --- Chapter 12 m) after the merger to l), and the words "value C0 can (1) is calculated by the formula." This standard made the following editorial changes. --- Delete the words "international standards foreword." The standard proposed by China Iron and Steel Association. This standard by the National Steel Standardization Technical Committee (SAC/TC183) centralized. This standard was drafted. Institute of Metal Research, Metallurgical Industry Information Standards Institute. The main drafters of this standard. Han Wei, Hou Jie, Wang Zhenyao, Feng Chao. Electrochemical techniques to measure metal hydrogen permeation Method (absorption and migration) of

1 Scope

This standard specifies The hydrogen in metals steady diffusion flux measurement results of the evaluation and determination of the amount of hydrogen absorbed in the hydrogen atom in the metal Metals and identification of effective diffusion coefficient of hydrogen reversible and irreversible trapping methods. This standard applies to all measurable hydrogen permeable metal, used to compare the size of the metal exposed to different environments in the hydrogen absorption capacity.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document. Laboratory use specifications and test methods GB/T 6682-2008 Analysis Electrochemical Corrosion Test Method potentiostat GB/T 24196-2009 metals and alloys and potentiodynamic polarization measurements

3 Terms and Definitions

The following terms and definitions apply to this document. 3.1 Hydrogen charging charging In the absence of corrosion, metal placed in an aqueous solution, the control constant current or constant potential, or by vapor exposure introducing hydrogen atoms into metal Methods. 3.2 Hydrogen rechargeable battery chargingcel Apparatus, the surface of the sample generating means a hydrogen atom, an aqueous solution comprising a gas phase hydrogen charging and hydrogen charging. 3.3 Oxide battery oxidationcel Oxidation unit from escaping hydrogen atoms in the metal specimen. 3.4 Current decay currentdecay After hydrogen filling reaches a steady state current reduces the attenuation caused by the charging of hydrogen atoms in the hydrogen oxidation current. 3.5 Fick's second law Fick'ssecondlaw Describe the concentration of hydrogen atoms in the sample position and the secondary differential equations a function of time. Note. Equation ∂C (x, t)/t = D∂2C (x, t)/∂x2 is not dependent on the concentration of the one-dimensional lattice diffusion, related symbols in Table 1. 3.6 Hydrogen diffusion flux hydrogenflux Sample amount in unit time through unit area of \u200b\u200ba hydrogen atom. ......

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