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GB/T 21115-2007Measurement of the levitation force of bulk oxide superconductors (English PDF)

块状氧化物超导体磁浮力的测量

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Issued by

General Administration of Quality Supervision, Inspection and Quarantine; Standardization Administration of the PRC

Level / Type

National · Recommended

Issue date

October 11, 2007

Implementation date

December 1, 2007

Scope

GB/T 21115-2007 is the English-translated version of 块状氧化物超导体磁浮力的测量.

GB/T 21115-2007 is the Chinese standard "Measurement of the levitation force of bulk oxide superconductors". Its scope clause reads: This standard specifies the test block large grain oxide superconductors (abbreviated massive superconductor) at liquid nitrogen temperature (77K) near Magnetic Force method.

This standard applies to the measurement prepared by the melt-textured growth cylindrical RE-Ba-Cu-O superconductor axial magnetic levitation force of the superconductor Diameter less than or equal to 50mm.

Cylindrical superconducting block diameter larger than 50mm and the other having a regular shape (cube, cuboid, was sixty Prisms, etc.) measure the axial force superconducting maglev blocks and non-axial magnetic levitation force may also refer to this standard. Its clauses include terms and definitions.

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Document preview — GB/T 21115-2007

National Standard of the People's Republic of China

ICS: 77.040.99
Classification: H 21

Issued by: General Administration of Quality Supervision, Inspection and Quarantine; Standardization Administration of the PRC

Foreword
1 Scope
2 Normative references
3 Terms and Definitions
3.

1 Scope

This standard specifies the test block large grain oxide superconductors (abbreviated massive superconductor) at liquid nitrogen temperature (77K) near Magnetic Force method.

This standard applies to the measurement prepared by the melt-textured growth cylindrical RE-Ba-Cu-O superconductor axial magnetic levitation force of the superconductor

Diameter less than or equal to 50mm. Cylindrical superconducting block diameter larger than 50mm and the other having a regular shape (cube, cuboid, was sixty

Prisms, etc.) measure the axial force superconducting maglev blocks and non-axial magnetic levitation force may also refer to this standard.

2 Normative references

The following documents contain provisions adopted in this standard references to the Terms constitute standards. For cited documents with dates, with its

After all of the amendments (not including errata content) or revisions do not apply to this standard, however, encourage each agreement in accordance with this standard

Are Prescriptions can use the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.

GB/T 13811-2003 Electrotechnical terminology superconductivity (IDTIEC 60050-815.2000. Electrotechnicalterminolo- gy-Superconductivity)

JJF1059-1999 Evaluation and Expression of Uncertainty in Measurement

3 Terms and Definitions

GB/T 13811, JJF1059 established as well as the following terms and definitions apply to this section.

3.1

Under certain conditions exhibit superconductivity compound contains oxygen as an essential component of a superconductor.

NOTE. Always refer to the appropriate conditions of temperature, magnetic field strength and the current density. [GB/T 13811-2003 in 815-02-05]

3.2

Containing copper oxide superconductor layered structure of surface oxygen. [GB/T 13811-2003 in 815-02-08]

3.3

Partially melted at high temperatures after solidification, to prepare a good orientation of the oxide superconductor technology. [GB/T 13811-2003 in

815-05-22]

3.4

In determining the gap between the lower temperature and determine the interaction force generated between bulk superconductor and magnet Newtons (N). The superconducting

The interaction between the body and the magnet of history and state, magnetic force can be attractive or repulsive force.

Take certain conditions (magnetic and cooling) and the minimum distance measurable repulsion (0.1mm) under the sample under the conditions

The maximum repulsive force.

Take the maximum under certain conditions (magnetic and cooling) measured the attractiveness of the biggest attraction in the sample under this condition.

3.5

Acting on the basis of the end face of the superconductor maglev force in Newtons per square centimeter (N/cm2). […]

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 17 pages — is available in the English PDF.

Referenced standards

Normative references

GB/T 13811-2003 · IEC 60050 · JJF1059-1999

Similar standards

GB/T 21116-2007|GB/T 3102.5-1993|GB/T 8170-2008|GB/T 24583|GB/T 21115-2007|GB/T 34898

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