GB/T 43101-2023 PDF EnglishUS$165.00 · In stock · Download in 9 seconds
GB/T 43101-2023: Metallic and other inorganic coatings - Definitions and conventions concerning porosity Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid
Similar standardsGB/T 43101-2023: Metallic and other inorganic coatings - Definitions and conventions concerning porosity---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT43101-2023 GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 25.220.20; 25.220.40 CCS A 29 Metallic and Other Inorganic Coatings - Definitions and Conventions Concerning Porosity (ISO 18332:2007, MOD) ISSUED ON: SEPTEMBER 7, 2023 IMPLEMENTED ON: APRIL 1, 2024 Issued by: State Administration for Market Regulation; Standardization Administration of the People’s Republic of China. Table of ContentsForeword ... 3 1 Scope ... 4 2 Normative References ... 4 3 Terms and Definitions ... 4 4 Test Purpose ... 5 5 Principle ... 5 6 Specimen Rating ... 6 7 Test Report ... 6 Bibliography ... 7 Metallic and Other Inorganic Coatings - Definitions and Conventions Concerning Porosity1 ScopeThis document defines porosity and its related terms and describes the principle of porosity test of metallic and other inorganic coatings. This document provides the purpose of porosity test to help users choose the most suitable test method for their products and applications. This document is applicable to the test of discontinuities, such as: cracks, micropores, pores or pits that extend from the surface of the coating to the underlying layer or substrate. This document is not applicable to corrosion performance evaluation.2 Normative ReferencesThe contents of the following documents constitute indispensable clauses of this document through the normative references in the text. In terms of references with a specified date, only versions with a specified date are applicable to this document. In terms of references without a specified date, the latest version (including all the modifications) is applicable to this document. GB/T 17720 Metallic Coatings - Review of Porosity Tests (GB/T 17720-1999, eqv ISO 10308:1995)3 Terms and DefinitionsThe following terms and definitions are applicable to this document. 3.1 porosity Porosity refers to holes, cracks or other discontinuities (3.3) in the coating that expose the underlying metal or substrate to the environment. 3.2 pore in a coating Pore in a coating refers to a circular discontinuity (3.3) on a surface that extends to the underlying layer or base metal. NOTE: for the size of the pore, see GB/T 17720. 3.3 discontinuity Discontinuity refers to an opening in the continuous coating that exposes different underlying metals. NOTE: cracks, micropores, pores or pits in the coating are typical openings. The openings can also be voids and cracks caused by mechanical damage (for example, scratches) or non- conductive inclusions in the base metal (see GB/T 17720). 3.4 corrosion product Corrosion product refers to a substance formed due to corrosion.4 Test PurposeThe main purpose of porosity test is to determine the quality of the coating and identify porosity of the coating, especially in areas with functional requirements on the main surface, for example, electric contacts. In order to test the porosity of metallic and other inorganic coatings, it is necessary to consider two corrosion methods, namely, electrochemical test and exposure test. Both methods can be used to identify the existence, distribution and extent of porosity. The chosen test method depends on the nature of the coating, substrate and underlying layer. Generally speaking, electrochemical test has an accelerated nature and is performed under controlled chemical, electrical and physical conditions, with relative short exposure times, making it ideal for production process control. Exposure test (immersion test, liquid mist test and gas atmosphere test) usually lasts for a relatively long time, and the exposure form (for example, static or cyclic) can be selected in accordance with product requirements. This type of test is especially applicable to product quality appraisal (qualification assessment). The classification of porosity test shall be carried out in accordance with GB/T 17720.5 Principle5.1 Electrochemical Test In electrochemical test, the base metal / cladding layer combination is usually used as the positive electrode of the electrochemical cell; stainless steel plate or inert conductive material can be used as the negative electrode. In the electrolyte or conductive medium of filter paper or gel, add an indicator that can display the base metal ions. The purpose of this test is to generate dissolution of the base metal by direct application of a positive polarization voltage. The resulting base metal ions will migrate toward the negative electrode through conductive paper or gel under an external electric field. The color development of the indicator and the resulting phase image depends on the degree of porosity in the coating. In general, both constant-voltage and constant-current can be used in electrochemical and ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of English version of GB/T 43101-2023 be delivered?Answer: The full copy PDF of English version of GB/T 43101-2023 can be downloaded in 9 seconds, and it will also be emailed to you in 9 seconds (double mechanisms to ensure the delivery reliably), with PDF-invoice.Question 2: Can I share the purchased PDF of GB/T 43101-2023_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 43101-2023_English will be deemed to be sold to your employer/organization who actually paid for it, including your colleagues and your employer's intranet.Question 3: Does the price include tax/VAT?Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countriesQuestion 4: Do you accept my currency other than USD?Answer: Yes. www.ChineseStandard.us -- GB/T 43101-2023 -- Click this link and select your country/currency to pay, the exact amount in your currency will be printed on the invoice. Full PDF will also be downloaded/emailed in 9 seconds.How to buy and download a true PDF of English version of GB/T 43101-2023?A step-by-step guide to download PDF of GB/T 43101-2023_EnglishStep 1: Visit website https://www.ChineseStandard.net (Pay in USD), or https://www.ChineseStandard.us (Pay in any currencies such as Euro, KRW, JPY, AUD).Step 2: Search keyword "GB/T 43101-2023". Step 3: Click "Add to Cart". If multiple PDFs are required, repeat steps 2 and 3 to add up to 12 PDFs to cart. Step 4: Select payment option (Via payment agents Stripe or PayPal). Step 5: Customize Tax Invoice -- Fill up your email etc. Step 6: Click "Checkout". Step 7: Make payment by credit card, PayPal, Google Pay etc. After the payment is completed and in 9 seconds, you will receive 2 emails attached with the purchased PDFs and PDF-invoice, respectively. Step 8: Optional -- Go to download PDF. Step 9: Optional -- Click Open/Download PDF to download PDFs and invoice. See screenshots for above steps: Steps 1~3 Steps 4~6 Step 7 Step 8 Step 9 |
