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GB/T 34520.6-2017: Test methods for continuous silicon carbide fiber -- Part 6: Resistivity
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GB/T 34520.6-2017: Test methods for continuous silicon carbide fiber -- Part 6: Resistivity

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Test methods for continuous silicon carbide fiber-Part 6. Resistivity ICS 49.025.99 V13 National Standards of People's Republic of China Continuous silicon carbide fiber test method Part 6. Resistivity Part 6.Resistivity 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 6. 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 6. Resistivity

1 Scope

GB/T 34520 provisions of this part of the test method of continuous silicon carbide (siliconcarbide, SiC) fiber resistivity test principle, the test Environment, test equipment and materials, samples and their preparation, test procedures, test results calculation and test report. This section applies to SiC single fiber resistivity and beam resistance 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 For all undated references, the latest edition (including all amendments) applies to this document. GB/T 18374 Reinforcement terms and definitions Test methods for continuous silicon carbide fibers - Part 1. String sizing rate Methods of test for continuous silicon carbide fibers - Part 2. Single fiber diameter Methods of test for continuous silicon carbide fibers - Part 3. Linear density and density GB/T 34520.5-2017 Methods for the determination of continuous silicon carbide fibers - Part 5. Tensile properties of single fibers JB/T 9303 measurement DC power supply unit

3 Terms and definitions

GB/T 18374 and GB/T 34520.1-2017 defined terms and definitions apply to this document.

4 test principle

The resistivity is calculated from the resistance of the sample, the length of the sample and the cross-sectional area. Resistance and sample length obtained by the direct test. for SiC single fiber, the cross-sectional area calculated from the measured diameter of the sample obtained; for SiC fiber bundle, the cross-sectional area of the sample according to the close Degree and linear density calculated. Resistance and cross-sectional area of the product, and then the ratio of the length of the sample is the resistivity of the sample. Test principle shows Intention see Figure 1. ...