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GB/T 39482.1-2023: Electrochemical impedance spectroscopy(EIS) on coated and uncoated metallic specimens - Part 1: Terms and definitions
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GB/T 39482.1-2023: Electrochemical impedance spectroscopy(EIS) on coated and uncoated metallic specimens - Part 1: Terms and definitions

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ICS 87.010 CCSG50 National Standards of People's Republic of China Painted and unpainted metal specimens Electrochemical Impedance Spectroscopy (EIS) Part 1.Terms and Definitions metalicspecimens-Part 1.Termsanddefinitions Published on 2023-09-07 2024-04-01 Implementation State Administration for Market Regulation Released by the National Standardization Administration Committee

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1.Structure and Drafting Rules of Standardization Documents" Drafting. This document is Part 1 of GB/T 39482 "Electrochemical Impedance Spectroscopy (EIS) of Painted and Unpainted Metal Specimens". GB/T 39482 The following sections have been published. ---Part 1.Terms and definitions; ---Part 3.Processing and analysis of data obtained from simulated electrolytic cells. This document is equivalent to ISO 16773-1.2016 "Electrochemical impedance spectroscopy (EIS) of painted and unpainted metal specimens - Part 1.Techniques" Phrases and Definitions. This document adds a chapter "Normative References" and an "Index". Please note that some content in this document may be subject to patents. The publisher of this document assumes no responsibility for identifying patents. This document is proposed by China Petroleum and Chemical Industry Federation. This document is under the jurisdiction of the National Coatings and Pigments Standardization Technical Committee (SAC/TC5). This document was drafted by. Institute of Oceanography, Chinese Academy of Sciences, Changzhou Guanghui New Materials Research Institute Co., Ltd., CNOOC Changzhou Coating Chemicals Research Institute Co., Ltd., Hubei Sanjiang Aerospace Coating Equipment Engineering Co., Ltd., Zhejiang Yutong New Materials Co., Ltd., Zhejiang Saifei Electrical Appliances Co., Ltd., Zhuhai Hengce Technology Co., Ltd., Liyang Jiahe Electronic Materials Co., Ltd., Zhejiang Chaolang New Materials Co., Ltd., Guohengxin (Changzhou) Testing and Certification Technology Co., Ltd., Qingdao Vocational and Technical College, Zhejiang Genyuan Paint Technology Co., Ltd., Biaogeda Precision Instrument Chemical (Guangzhou) Co., Ltd., Foshan Xinzheng Chemical Co., Ltd., Donghua University of Science and Technology, Shandong Donghong Intelligent Technology Co., Ltd., Shaoxing Changmu New Materials Technology Co., Ltd., Geike (Zhejiang) Biotechnology Co., Ltd., Langfang Yanmei Chemical Co., Ltd., Shunde Vocational and Technical College, Jiangsu Kexiang Anticorrosive Materials Co., Ltd., Sichuan Guohengxin Testing and Certification Technology Co., Ltd., Qingdao University of Technology, Maanshan Caishiji Paint Co., Ltd. Division, Ruitong Polymer Technology (Zhejiang) Co., Ltd., Shandong Tiandun Mining Equipment Co., Ltd., Zhangzhou Xianghao Paint Industry and Trade Co., Ltd. The main drafters of this document. Zhao Xia, Mu Zhichao, Yang Qingwei, Zhang Guoqin, Duan Jizhou, Yu Gaobo, Ji Junhong, Wu Huage, Yang Yaliang, Xiao Tianyou, Wang Chengyi, Zhao Meifa, Zhang Heming, Wang Peng, Li Biao, Zhang Zhibin, Zhou Guoqing, Yu Guo, Zhao Shifang, Zhao Juanhui, Chen Yanwu, Liu Kunming, Shen Yong, Jin Zuquan, Chen Kang, Liu Tao, Chunhua, Xu Jiao, Hou Baorong, Wang Zhaoguo, Cai Dehe.

Introduction

GB/T 39482 describes the application of electrochemical impedance spectroscopy (EIS). Although this document was originally developed for coatings and is primarily Parts are for coatings, but general guidelines can also be applied to unpainted specimens. For unpainted specimens, the ISO / More information is found in TR16208. GB/T 39482 aims to describe the application of electrochemical impedance spectroscopy (EIS) and is intended to consist of four parts. ---Part 1.Terms and definitions. Terms and definitions used in electrochemical impedance spectroscopy are defined. ---Part 2.Data collection. Describes an experimental procedure for testing laboratory instruments for acquisition and presentation under potentiostatic control The following collection focuses on EIS data of high-resistance organic coatings on metal surfaces. Specifies simulations for simulating the characteristics of high-impedance systems Cell. Test procedures and setup parameters for collecting impedance data from simulated electrolytic cells and coated metal specimens are given. number. A procedure is outlined for comparing recorded spectra using theoretical data from a simulated electrolytic cell in order to establish an acceptable Guidelines for developing instrument precision and limitations. No guidance on data interpretation is provided. ---Part 3.Processing and analysis of data obtained from simulated electrolytic cells. Specifies a method for evaluating high-resistance painted specimens Procedures for the EIS test device, and acceptance criteria for the obtained values are given. ---Part 4.Examples of spectra for coated and uncoated polymer samples. Is informative in nature and includes the resistance of coated metal specimens Some background on antispectral studies and some typical spectrum examples of actual coatings. ISO /T R16208 describes the basic principles of electrochemical impedance spectroscopy (EIS), with a particular focus on corrosion of metallic materials. It also involves how Use electrochemical equipment, set up and connect electrical instruments, display measurement data, and analyze results. Painted and unpainted metal specimens Electrochemical Impedance Spectroscopy (EIS) Part 1.Terms and Definitions

1 Scope

This document defines the terms and definitions used in electrochemical impedance spectroscopy (EIS) in other parts of GB/T 39482.

2 Normative reference documents

This document has no normative references.

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 peak-to-peakamplitude 2U0 The maximum difference between the maximum and minimum excitation signals in the applied AC disturbance signal. Note. Peak-to-peak amplitude is usually expressed in millivolts (mV). 3.2 Root mean square amplitudermsamplitude Urms The root mean square (i.e. effective) value of the applied AC disturbance signal. Note. That is the peak-to-peak value of AC amplitude divided by (2×2). 3.3 Bodeplot The relationship curve (a) between the phase angle (3.36) and the logarithm of the applied frequency, and the logarithm of the impedance magnitude (3.28) |Z| and the logarithm of the applied frequency Relationship curve (b). 3.4 Rct The resistance of a resistor that represents the properties of the metal-electrolyte interface in the equivalent circuit (3.18). Note. Charge transfer resistance is usually expressed in ohms (Ω). Charge transfer resistivity is usually expressed in ohms square centimeters (Ω·cm2). 3.5 coatingcoating A layer of paint applied to a substrate in one or more applications. [Source. ISO 4618.2014,2.50.1] ...