BS EN IEC 61788-4:2020 Superconductivity Residual Resistance Ratio Measurement

Unlock the potential of superconductivity with the comprehensive standard BS EN IEC 61788-4:2020. This essential document provides detailed guidelines and methodologies for measuring the residual resistance ratio (RRR) of Nb-Ti and Nb₃Sn composite superconductors, two of the most critical materials in the field of superconductivity.

Overview

Released on May 20, 2020, this standard is a pivotal resource for professionals and researchers working with superconducting materials. With a total of 40 pages, it offers an in-depth exploration of the techniques and principles necessary to accurately measure the residual resistance ratio, a key parameter in assessing the quality and performance of superconductors.

Key Features

• Standard Number: BS EN IEC 61788-4:2020
• ISBN: 978 0 539 02237 7
• Status: Standard
• Pages: 40
• Release Date: May 20, 2020

Why This Standard is Essential

The BS EN IEC 61788-4:2020 standard is indispensable for anyone involved in the development, testing, and application of superconducting materials. The residual resistance ratio is a critical measure of a superconductor's purity and performance. By providing a standardized method for its measurement, this document ensures consistency and reliability in results, facilitating advancements in technology and research.

Understanding Residual Resistance Ratio (RRR)

The residual resistance ratio is defined as the ratio of the electrical resistance of a material at room temperature to its resistance at a lower reference temperature, typically near absolute zero. This ratio is a crucial indicator of the material's quality, as it reflects the level of impurities and defects present. A higher RRR indicates a purer material with fewer impurities, which is desirable for superconducting applications.

Applications of Nb-Ti and Nb₃Sn Superconductors

Nb-Ti and Nb₃Sn are among the most widely used superconducting materials, each with unique properties that make them suitable for various applications:

• Nb-Ti: Known for its excellent ductility and ease of fabrication, Nb-Ti is commonly used in MRI machines, particle accelerators, and other applications requiring strong magnetic fields.
• Nb₃Sn: With a higher critical temperature and magnetic field than Nb-Ti, Nb₃Sn is ideal for high-field applications such as fusion reactors and advanced scientific research facilities.

Benefits of Using This Standard

By adhering to the BS EN IEC 61788-4:2020 standard, organizations and researchers can ensure that their measurements of the residual resistance ratio are accurate and consistent. This consistency is vital for comparing results across different studies and applications, ultimately leading to more reliable and efficient superconducting technologies.

Enhancing Research and Development

For researchers, this standard provides a robust framework for conducting experiments and analyzing data. It helps streamline the research process by offering clear guidelines and reducing the potential for errors. This, in turn, accelerates the development of new superconducting materials and technologies.

Supporting Industry Standards

In the industrial sector, adherence to this standard ensures that products meet the highest quality benchmarks. Manufacturers can confidently produce superconducting components that are both effective and reliable, meeting the stringent demands of modern technology and infrastructure.

Conclusion

The BS EN IEC 61788-4:2020 standard is a vital tool for anyone involved in the field of superconductivity. By providing a clear and consistent method for measuring the residual resistance ratio of Nb-Ti and Nb₃Sn composite superconductors, it supports the advancement of technology and research. Whether you are a researcher, engineer, or manufacturer, this standard is an invaluable resource for ensuring the quality and performance of superconducting materials.

Embrace the future of superconductivity with the BS EN IEC 61788-4:2020 standard, and ensure your work is at the forefront of innovation and excellence.

BS EN IEC 61788-4:2020

This standard BS EN IEC 61788-4:2020 Superconductivity is classified in these ICS categories:

• 17.220.20 Measurement of electrical and magnetic quantities
• 17.200.20 Temperature-measuring instruments
• 29.050 Superconductivity and conducting materials

IEC 61788-4:2020 is available as IEC 61788-4:2020 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.

IEC 61788-4:2020 specifies a test method for the determination of the residual resistance ratio (RRR) of Nb-Ti and Nb3Sn composite superconductors with Cu, Cu-Ni, Cu/Cu-Ni and Al matrix in a strain-free condition and zero external magnetic field. This method is intended for use with superconductor specimens that have a monolithic structure with rectangular or round cross-section, RRR value less than 350, and cross-sectional area less than 3 mm2. In the case of Nb3Sn, the specimens have received a reaction heat-treatment. This fifth edition cancels and replaces the fourth edition published in 2016. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) change in the suitable distance of voltage taps on the specimen for reliable measurement, b) new report on the result of the round robin test of the residual resistance ratio of Nb3Sn superconductors that proves the validity of the measurement method in this standard, c) revision of the confusing definitions of the copper ratio and copper fraction.