GB/T 41737-2022 PDF EnglishUS$110.00 · In stock · Download in 9 seconds
GB/T 41737-2022: Aluminum matrix composites - Test method for volume fraction of SiC - Dissolution method 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 41737-2022: Aluminum matrix composites - Test method for volume fraction of SiC - Dissolution method---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/GBT41737-2022 GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 77.040.99 CCS Y 80 Aluminum matrix composites - Test method for volume fraction of SiC - Dissolution method 铝基复合材料 ISSUED ON: OCTOBER 12, 2022 IMPLEMENTED ON: FEBRUARY 1, 2023 Issued by: State Administration for Market Regulation; Standardization Administration of PRC. Table of ContentsForeword ... 3 1 Scope ... 4 2 Normative references ... 4 3 Principles of the method ... 4 4 Reagents ... 5 5 Instruments and equipment ... 5 6 Analysis steps ... 5 7 Calculation of results ... 6 8 Test report ... 7 Aluminum matrix composites - Test method for volume fraction of SiC - Dissolution method1 ScopeThis document describes the method principle, reagents, instruments and equipment, analysis steps, result calculation method, and test report for the determination of silicon carbide particle, whisker, and fiber volume fraction in silicon carbide particle, whisker, and fiber reinforced aluminum matrix composites. This document is applicable to the determination of silicon carbide particle, whisker, and fiber volume fraction in particle reinforced aluminum matrix composites with a reinforcement particle size greater than 3 μm or whisker and fiber reinforced aluminum matrix composites with a diameter greater than 3 μm.2 Normative referencesThe following documents contain the provisions which, through normative reference in this document, constitute the essential provisions of this document. For the dated referenced documents, only the versions with the indicated dates are applicable to this document; for the undated referenced documents, only the latest version (including all the amendments) is applicable to this document. GB/T 603 Chemical reagent - Preparations of reagent solutions for use in test methods GB/T 3850 Impermeable sintered metal materials and hardmetals - Determination of density GB/T 6682 Water for analytical laboratory use - Specification and test methods JB/T 11433 Conventional abrasive - Determination of density3 Principles of the methodAn acidic solvent that can dissolve the aluminum matrix but not corrode the silicon carbide reinforcement is selected to dissolve the sample. The reinforcements are collected and weighed, and the volume fraction of silicon carbide reinforcements is calculated according to the mass-to-volume conversion formula. according to the method specified in GB/T 3850. 6.2.2 The density of silicon carbide reinforcement in aluminum matrix composites shall be measured according to the method specified in JB/T 11433. 6.3 Preparation of the ceramic crucible 6.3.1 Clean the ceramic crucible and place it in a Muffle furnace at 950 °C until its weight is constant (the difference between the two weighings shall not exceed 0.3 mg). 6.3.2 Put the constant-weight ceramic crucible in a desiccator for later use. 6.4 Dissolution of the matrix 6.4.1 Weigh the sample according to Table 1 and place it in a polytetrafluoroethylene beaker, add 30 mL of hydrochloric acid solution (4.3), cover the beaker; after the violent reaction is over, slowly add the hydrofluoric acid (4.4) dropwise until it is completely dissolved. 6.4.2 Wash the beaker lid and beaker wall with water, and add hydrogen peroxide (4.5) dropwise until the solution is clear. 6.4.3 Thoroughly clean the walls of the beaker. 6.4.4 Heat the solution at a low temperature until it is boiling (with large bubbles), remove the beaker, and cool to room temperature. 6.5 Filtration and constant-weight keeping of reinforcement 6.5.1 Filter the precipitate with quantitative slow filter paper, thoroughly clean the beaker and filter the cleaning solution. 6.5.2 Clean the filter paper and sediment until there is no more acid residue, then transfer the filter paper and sediment together to a ceramic crucible with constant weight. 6.5.3 First incinerate it at 500 °C, then burn at 900 °C±50 °C, take it out and cool it slightly; transfer it to a desiccator to cool, and weigh it until its weight is constant, the result is accurate to 0.0001 g.7 Calculation of resultsThe volume fraction φr of silicon carbide is calculated according to formula (1), and the calculation result is retained to three significant figures. ......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 41737-2022 be delivered?Answer: The full copy PDF of English version of GB/T 41737-2022 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 41737-2022_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 41737-2022_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 41737-2022 -- 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 41737-2022?A step-by-step guide to download PDF of GB/T 41737-2022_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 41737-2022". 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 |
