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GB/T 34520.7-2017 English PDF

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GB/T 34520.7-2017: Test methods for continuous silicon carbide fiber -- Part 7: High temperature strength retention rate
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GB/T 34520.7-2017English119 Add to Cart 3 days [Need to translate] Test methods for continuous silicon carbide fiber -- Part 7: High temperature strength retention rate Valid GB/T 34520.7-2017

PDF similar to GB/T 34520.7-2017


Standard similar to GB/T 34520.7-2017

GB/T 34520.8   GB/T 34520.9   GB/T 34520.2   GB/T 34520.3   

Basic data

Standard ID GB/T 34520.7-2017 (GB/T34520.7-2017)
Description (Translated English) Test methods for continuous silicon carbide fiber -- Part 7: High temperature strength retention rate
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard V13
Classification of International Standard 49.025.99
Word Count Estimation 6,688
Date of Issue 2017-11-01
Date of Implementation 2018-02-01
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

GB/T 34520.7-2017: Test methods for continuous silicon carbide fiber -- Part 7: High temperature strength retention rate


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Test methods for continuous silicon carbide fiber-Part 7. High temperature strength retention rate ICS 49.025.99 V13 National Standards of People's Republic of China Continuous silicon carbide fiber test method Part 7. High temperature strength retention Part 7.Hightemperaturestrengthretentionrate Posted.2017-11-01 2018-02-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China China National Standardization Administration released

Foreword

GB/T 34520 "continuous silicon carbide fiber test method" is divided into seven parts. --- Part 1. Beam wire sizing rate; --- Part 2. Single fiber diameter; --- Part 3. Line density and density; --- Part 4. Beam tensile properties; --- Part 5. Tensile properties of single fibers; --- Part 6. Resistivity; --- Part 7. High temperature strength retention. This section GB/T 34520 Part 7. This section drafted in accordance with GB/T 1.1-2009 given rules. This part is proposed by China Aerospace Science and Technology Corporation. This part of the National Aerospace Technology and Application Standardization Technical Committee (SAC/TC425) centralized. This part of the drafting unit. National Defense Science and Technology, China Aerospace Standardization Institute. The main drafters of this section. Wang Jun, Wang Hao, Jane Branch, Wang Yifei, Song Yongcai, Wang Yingde, Shao Changwei, Gou Yan Zi, Wang Xiaowu, Wang Bing, Tang Jiao Jiao, Chen Qiang. Continuous silicon carbide fiber test method Part 7. High temperature strength retention

1 Scope

GB/T 34520 provisions of this part of the test continuous silicon carbide (siliconcarbide, SiC) fiber high temperature strength retention test ring Habitat, test equipment, samples and their preparation, test procedures, calculation of test results and test reports. This section applies to SiC single fiber in an inert atmosphere 800 ℃ above the high temperature strength retention test.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version applies to this article Pieces. For undated references, the latest edition (including all amendments) applies to this document. Textile and textile materials - Performance and test terms - Part 3. General GB/T 4146.3 Textiles chemical fibers Part 3. Inspection terms GB/T 8170 rounded repair rules and limit values of the representation and judgment Determination of effective heating zone for heat treatment furnaces GB/T 9452-2012 GB/T 18374 Reinforcement terms and definitions Test methods for continuous silicon carbide fibers - Part 1. String sizing rate GB/T 34520.5-2017 Methods for the determination of continuous silicon carbide fibers - Part 5. Tensile properties of single fibers

3 Terms and definitions

GB/T 3291.3, GB/T 4146.3, GB/T 18374 and GB/T 34520.1-2017 as defined by the following terms and definitions suitable Used in this document. 3.1 High temperature strength retention strengthretentionratioafterretreatinginhigh-temperature The SiC fiber samples were treated for some time in a high-temperature environment. The tensile strength (σ ') of the treated samples and the untreated sample Tensile strength (σ) as a percentage.

4 test environment

4.1 Standard Test Environmental Conditions Temperature (23 ± 2) ℃, relative humidity (50 ± 10)%. 4.2 In other environmental conditions for testing, the test report should be marked in the test environment temperature and relative humidity.

5 test equipment

5.1 high temperature processing equipment High-temperature processing equipment should meet the following requirements.

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