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Test methods for continuous silicon carbide fiber -- Part 7: High temperature strength retention rate
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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 | 6,653 |
| 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
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
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.
...
