Memory with anti-theft function

A memory and function technology, applied in the field of memory, to achieve the effect of high anti-theft and anti-vandal capabilities

Inactive Publication Date: 2017-01-11
BEIJING HENGWEI TECH CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no such memory with anti-theft function in the prior art

Method used

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  • Memory with anti-theft function

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0119] Preparation of Amorphous Fibers, Taylor Spinning Process

[0120] Refer to the attached image 3 , taking the glass-coated amorphous fiber as an example, the preparation method of the amorphous fiber of the present invention is introduced.

[0121] First, a Co-based master alloy rod is provided. The alloy rod has a melting point of 970° C., a diameter of 7 mm, and a composition of Co71.8Fe4.9Nb0.8Si7.5B15. Choose a glass tube with a softening temperature of 780°C, an outer diameter of 12mm, and a wall thickness of 1mm.

[0122] Insert the master alloy rod into the bottom of the glass tube;

[0123] The master alloy is melted in a high-frequency induction furnace and heated to 1200°C;

[0124] Soften the glass tube with molten master alloy;

[0125] Pull out the wire by pulling;

[0126] Through the cooling water, the master alloy in the molten state will be cooled to form an amorphous alloy;

[0127] Wound on the take-up roller, the take-up speed is 30 m / min;

[...

Embodiment 2

[0132] The amorphous fibers prepared in Example 1 are directly implanted into the shell of the USB flash drive, wherein the total length distribution of the amorphous fibers in the shell of the USB flash drive is 0.5 m, 0.75 m, 1 m, and 2 m, respectively. The prepared U disk is tested, and the results are as follows (wherein each result is the statistical result obtained by repeated detection of 100 tests, and the detection rate refers to the number of times the detection instrument alarms when the U disk is put into the detection area of ​​the detection instrument ):

[0133]

[0134]

[0135] It can be seen from the above results that the glass-coated amorphous fiber prepared in Example 1 has a large Barkhausen effect. Under the condition that the length of the amorphous fiber is less than or equal to 1mm, the detection rate of the instrument to this kind of memory with anti-theft function is lower than 55%, but under the condition that the length of the amorphous fibe...

Embodiment 3

[0137] Preparation of Amorphous Bare Fibers by Internal Cylindrical Water Spinning

[0138] Refer to the attached Figure 4 , introduces the preparation method of the amorphous bare fiber of the present invention.

[0139] First, a Co-based master alloy rod is provided. The alloy rod has a melting point of 970° C., a diameter of 7 mm, and a composition of Co71.8Fe4.9Nb0.8Si7.5B15.

[0140] Add cooling water into the high-speed rotating drum with a speed of 150 m / s, so that the cooling water rotates synchronously on the inner wall of the drum;

[0141] Put the master alloy into the nozzle, melt the master alloy by induction heating, and heat it to 1200 degrees;

[0142] The nozzle is filled with high-pressure gas, and the molten master alloy is sprayed into water for rapid solidification to prepare amorphous bare fibers.

[0143] The continuous amorphous bare fiber filaments prepared in Example 3 have a diameter of 100±3 microns.

[0144] The obtained amorphous bare fiber f...

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Abstract

The present invention relates to a memory with an anti-theft function, and a method preparing the memory with the anti-theft function. An amorphous fiber with the Great Barkhausen effect is embedded in the memory with the anti-theft function, wherein the diameter of the amorphous fiber is 10-150 micron, preferably 20-30 micron, and the length of the amorphous fiber is 2-15mm, 3-8mm, or 3-5mm.

Description

technical field [0001] The present application relates to a memory with an anti-theft function and a method for preparing the memory with an anti-theft function. Background technique [0002] As a resource, information is of special significance to human beings due to its universality, sharing, value-added, processability and multi-utility. According to the definition of the International Organization for Standardization, the meaning of information security mainly refers to the integrity, availability, confidentiality and reliability of information. The fundamental purpose of protecting information security is to protect internal information from internal, external, natural and other threats. Information security is an issue that any country must attach great importance to, and it is a national security strategy that cannot be ignored. Hostile forces or illegal organizations use various means to steal political, military, economic, scientific and technological secret inform...

Claims

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Application Information

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IPC IPC(8): G11C7/10B21C37/04
Inventor 陈征王诚
Owner BEIJING HENGWEI TECH CO LTD
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