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ASTM A893/A893M-03
Standard Test Method for Complex Dielectric Constant of Nonmetallic Magnetic Materials at Microwave Frequencies
3 стр.
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Разработчик:
Зарубежные/ASTM
ICS:
29.030 Magnetic materials / Магнитные материалы
Сборник (ASTM):
03.07 Magnetic Properties / Магнитные свойства
Тематика:
Electrical and Magnetic Conductors, Electrical Contacts
Описание
Значение и использование

This test method can be used to evaluate batch type or continuous production of material for use in microwave applications. It may be used to determine the loss factors of microwave ferrites or help evaluate absorption materials for use in microwave ovens and other shielding applications.

The values obtained by use of this practice can be used as quality assurance information for process control, or both, when correlated to the chemistry or process for manufacturing the material.

Область применения

1.1 This test method covers the measurement of the complex dielectric constant of isotropic ferrites for extremely high-frequency applications.

1.2 The values and equations in customary (cgs-emu and inch-pound) or SI units are to be regarded separately as standard. Within this standard, SI units are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the standard.

1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Ключевые слова:
absorption; dielectric; dielectric constant; ferimagnetic; ferrite; loss factor; loss tangent; microwave; permittivity; shielding