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GB/T 41493.2-2022: Accelerated life test method of mixed metal oxide anodes for cathodic protection - Part 2: Application in soils and natural waters
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Accelerated life test method of mixed metal oxide anodes for cathodic protection - Part 2: Application in soils and natural waters
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GB/T 41493.2-2022
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Basic data | Standard ID | GB/T 41493.2-2022 (GB/T41493.2-2022) | | Description (Translated English) | Accelerated life test method of mixed metal oxide anodes for cathodic protection - Part 2: Application in soils and natural waters | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | H25 | | Word Count Estimation | 14,135 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 41493.2-2022: Accelerated life test method of mixed metal oxide anodes for cathodic protection - Part 2: Application in soils and natural waters
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Accelerated life test method of mixed metal oxide anodes for cathodic protection -- Part 2.Application in soils and natural waters
ICS 77.060
CCSH25
National Standards of People's Republic of China
Mixed metal oxide anodes for cathodic protection
Accelerated Life Test Methods Part 2.
Application in soil and natural water environment
(ISO 19097-2.2018, IDT)
Published on 2022-04-15
2022-11-01 Implementation
State Administration for Market Regulation
Released by the National Standardization Administration
foreword
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules of Standardization Documents"
drafted.
This document is part 2 of GB/T 41493 "Accelerated Life Test Method for Mixed Metal Oxide Anodes for Cathodic Protection".
GB/T 41493 has published the following parts.
--- Part 1.Applied to concrete;
--- Part 2.Applied to soil and natural water environments.
This document is identical to ISO 19097-2.2018 "Accelerated Life Test Method for Mixed Metal Oxide Anodes for Cathodic Protection No. 2
Section. Applications in Soil and Natural Water Environments".
Please note that some content of this document may be patented. The issuing agency of this document assumes no responsibility for identifying patents.
This document is proposed by China Iron and Steel Association.
This document is under the jurisdiction of the National Steel Standardization Technical Committee (SAC/TC183).
This document is drafted by. China Shipbuilding Industry Corporation No. 725 Research Institute, Metallurgical Industry Information Standards Research Institute, Qingdao Shuangruihai
Ocean Environmental Engineering Co., Ltd., Qingdao Steel Research Nanoco Detection and Protection Technology Co., Ltd., Beijing University of Science and Technology.
The main drafters of this document. Xu Likun, Xin Yonglei, Hou Jie, Tian Zijian, Wang Tingyong, Yang Zhaohui, Li Xiaogang, Meng Chao, Du Cuiwei.
Introduction
GB/T 41493 "Accelerated Life Test Method for Mixed Metal Oxide Anodes for Cathodic Protection" is the National Steel Standardization Technical Committee
One of the standards for corrosion test methods developed by the Subcommittee on Corrosion of Metals and Alloys (the "Committee").
GB/T 41493 aims to standardize the accelerated life test method of mixed metal oxide anodes for cathodic protection. The accelerated life test results can be used for
Compare the durability of different metal oxide anode materials and evaluate whether the anode meets the design life expectancy at rated current output.
GB/T 41493 consists of two parts.
--- Part 1.Applied to concrete. The purpose is to standardize mixed metal oxide anodes for cathodic protection in concrete environments
accelerated life test method.
--- Part 2.Applied to soil and natural water environments. The purpose is to standardize the use of mixed materials for cathodic protection in soil and natural water environments.
Accelerated life test method for alloyed metal oxide anodes.
Ambiguity of understanding and any resulting responsibility arising from the dissemination or interpretation of standards by other bodies that have not been authorized in writing by the Committee
The committee will not take any responsibility for any consequences.
Mixed metal oxide anodes for cathodic protection
Accelerated Life Test Methods Part 2.
Application in soil and natural water environment
1 Scope
This document specifies an accelerated life test method for mixed metal oxide anodes for cathodic protection in soil and natural water environments. accelerated life
Test results can be used to compare the durability of different metal oxide anode materials and to assess whether the anode meets the design at rated current output
life expectancy requirements.
2 Normative references
The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations
documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to
this document.
Note. GB/T 10123-2022 Basic terms and definitions for corrosion of metals and alloys (ISO 8044.2020, IDT)
3 Terms and Definitions
Terms and definitions defined in ISO 8044 and the following apply to this document.
3.1
mixed metal oxide anode
The auxiliary anode for impressed current cathodic protection is formed by coating a mixed metal oxide conductive coating on a titanium substrate.
Note. The most commonly used coating of metal oxide anodes for cathodic protection is a mixture of iridium oxide and tantalum oxide, and the specific composition of the coating can vary.
3.2
accelerated life
Lifetime of mixed metal oxide anodes in accelerated tests at high current densities in the specified test medium.
Note. The total test time before the failure of the mixed metal oxide anode is taken as the accelerated life.
3.3
Slot pressure celvoltage
The voltage difference between the anode and cathode in a single electrolytic cell (cell).
4 Test methods
4.1 Principle
The accelerated life test of mixed metal oxide anodes is carried out in a specific simulated environment, and the anode is subjected to much higher than normal operating conditions.
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