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Temperature property testing device of amorphous metal fibers

A technology of amorphous metal and temperature characteristics, which is applied in the field of temperature characteristic testing devices, can solve problems such as inaccurate temperature control and complex structure, and achieve the effects of improving control accuracy, precise temperature control, and avoiding interference

Active Publication Date: 2012-08-22
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a temperature characteristic testing device for amorphous metal fibers to solve the problems of complex structure and inaccurate temperature control of the current amorphous metal fiber temperature testing device

Method used

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  • Temperature property testing device of amorphous metal fibers
  • Temperature property testing device of amorphous metal fibers
  • Temperature property testing device of amorphous metal fibers

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Experimental program
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specific Embodiment approach 1

[0008] Specific implementation mode one: combine figure 1 Describe this embodiment, the temperature characteristic testing device of the amorphous metal fiber described in this embodiment, it is made up of precision impedance test system, constant temperature environment generation system and zero magnetic field correction system; Precision impedance test system is made up of precision impedance analyzer 2, 1 Composed of a Mholtz coil 5 and a constant current power supply 7, the constant temperature environment generation system includes a constant temperature working box 4, a temperature controller 6 and a liquid nitrogen storage tank 3; the constant temperature working box 4 is provided with a liquid nitrogen inlet 4-12, a liquid nitrogen Nitrogen outlet 4-10 and wire interface 4-11, wherein liquid nitrogen outlet 4-10 and wire interface 4-11 are arranged on the front of constant temperature work box 4, and liquid nitrogen inlet 4-12 is arranged on the back side of constant t...

specific Embodiment approach 2

[0011] Specific implementation mode two: combination figure 2 Describe this embodiment, this embodiment is a further limitation to the temperature characteristic testing device of the amorphous metal fiber described in the first embodiment, the constant temperature working box 4 includes a PCB test board 4-1, a protective pad 4-2, and a copper cover plate 4 -3, heating tank 4-4, support plate 4-5, thermocouple 4-6, heating body 4-7, protective cover 4-9, box body 4-13 and box body cover 4-14, the non- The crystal fiber 4-8 is arranged on the upper surface of the PCB test board 4-1, the thermocouple 4-6 is used to measure the temperature in the heating tank 4-4, and the output end of the thermocouple 4-6 is the temperature output of the constant temperature working box 4 At the end, the box body 4-13 and the box body upper cover 4-14 of the constant temperature work box 4 are made of double-layer bakelite, and the middle of the double-layer bakelite is filled with thermal insu...

specific Embodiment approach 3

[0013] Embodiment 3: This embodiment is a further limitation of the temperature characteristic testing device for amorphous metal fibers described in Embodiment 1. The constant temperature range of the constant temperature working box 4 is: -60°C-320°C.

[0014] Compared with the existing temperature measuring device, the present invention is simple and practical, has precise temperature control, is not easy to cause crystallization of fiber microstructure, and can obtain temperature characteristics of amorphous metal fiber in constant ambient temperature (-60°C-320°C).

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Abstract

The invention provides a temperature property testing device of an amorphous metal fiber, relates to the temperature property testing device, and solves the problems of the existing temperature property testing device of the amorphous metal fiber that the structure is complicated and the temperature control is inaccurate. The temperature property testing device of the amorphous metal fiber is composed of a precise impedance testing system, a constant-temperature environment generating system and a zero-magnetic-field correcting system, wherein the precise impedance testing system is composed of a precise impedance analyzer, Helmholtz coils and a constant-temperature power supply; the constant-temperature environment generating system comprises a constant-temperature working box, a temperature controller and a liquid nitrogen storage tank; the temperature controller is used for controlling a temperature in the constant-temperature working box to be constant; the precise impedance analyzer is used for measuring a resistance value of the amorphous metal fiber in the constant-temperature box and the constant-temperature power supply is used for supplying a constant-current source for the Helmholtz coils; a probe of a fluxgate magnetometer is arranged in an inner cavity of the constant-temperature working box, and the Helmholtz coils are fixed on two side faces of the constant-temperature working box. The temperature property testing device can obtain a temperature property of the detected amorphous metal fiber at a constant environmental temperature and the crystallization of a detected fiber microstructure is not easy to cause.

Description

technical field [0001] The invention relates to a temperature characteristic testing device. Background technique [0002] The microstructure of amorphous metal fibers is long-range disorder and short-range order, and it has good geometric symmetry, small hysteresis loss and coercive force, negative or near zero magnetostriction coefficient, high magnetic permeability, Special magnetic domain structure and skin effect (Skin Effect) and other characteristics, especially the significant giant magneto-impedance effect GMI (giant magneto-impedance) at higher frequencies is significantly better than amorphous thin strips, magnetic films and electrodeposited composite fibers, etc. Other types of materials, so amorphous fibers are more suitable as new sensitive materials for GMI magnetic sensors (see V.Zhukova, M.Ipatov, A.Zhukov.Thin Magnetically Soft Wires for Magnetic Microsensors.Sensors.2009, 9:9216-9240 .). The giant magneto-impedance effect of this type of sensitive materi...

Claims

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Application Information

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IPC IPC(8): G01R33/12
Inventor 刘景顺孙剑飞邢大伟曹福洋
Owner HARBIN INST OF TECH
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