-
-
-
Service Support
-
-
Measurement of DC Magnetic Properties of Permalloy 1J85 at Different Temperatures
Release time:
2021-12-27
Source:
Www.fe2100.com Hunan Yongyi Technology Co., Ltd.
When permalloy materials (e.g. 1J76, 1J79, 1J85) are used as shielding materials, the key assessment is the initial permeability ui(H = 0.08A/m) and the maximum permeability um of the materials. to test the initial permeability of accurate materials, two conditions are required: 1. Demagnetization is required to reach the Rayleigh area; 2. The DC curve of the material is obtained by impact measurement to ensure the accuracy and current nature of the test results. The DC magnetic performance device for FE-2100SD soft magnetic materials meets the requirements of the above two conditions in terms of hardware resolution and test method. The demagnetization control meets the minimum current zero uncertainty of 2uA (demagnetization frequency of 2Hz), and the minimum controllable effective value of H during the test reaches 0.0002A/m. At the same time, the technology "Closed Circuit DC Magnetic Performance Measurement Method for Soft Magnetic Materials" (2020112300784240) invented by our company is adopted, very good to meet the needs of permalloy testing.
When permalloy materials (e.g. 1J76, 1J79, 1J85) are used as shielding materials, the key assessment is the initial permeability ui(H = 0.08A/m) and the maximum permeability um of the materials. to test the initial permeability of accurate materials, two conditions are required:
1. Demagnetization is required to reach the Rayleigh area;
2. The DC curve of the material is obtained by impact measurement to ensure the accuracy and current nature of the test results.
DC Magnetic Performance Device for FE-2100SD Soft Magnetic Materials, both the hardware resolution and the test method meet the requirements of the above two conditions. demagnetization control meets the minimum current zero point uncertainty of 2uA (demagnetization frequency of 2Hz), and the minimum controllable effective value of h reaches 0.0002A/m during the test. at the same time, the technology patented by our company "closed-circuit DC magnetic energy measurement method for soft magnetic materials" (2020112300784240) is adopted, which well meets the requirements of permalloy test.
1. Permalloy material 1J85 material under different problem conditionspermeability curveTest:
2. Permalloy material 1J85 material under different temperature conditionsDC magnetic performance test report(Superposition of four BH curves):
3, Test Data and Analysis
| Temperature (℃) | μi(k) | μm(k) | Pu(J/m3) | Js(T) | Jr(T) | Hc(A/m) | Hs(A/m) |
| 80 | 42.84 | 137.9 | 1.03 | 0.6996 | 0.2472 | 0.889 | 801.7 |
| 60 | 41.86 | 130.8 | 1.087 | 0.7117 | 0.2445 | 0.9189 | 800.5 |
| 30 | 37.94 | 116.1 | 1.246 | 0.7276 | 0.2368 | 0.9814 | 800.1 |
| 0 | 28.95 | 98.18 | 1.348 | 0.7418 | 0.2291 | 1.105 | 800.2 |
| -20 | 23.92 | 88.11 | 1.533 | 0.7502 | 0.2278 | 0.889 | 801.7 |
1), with the increase of temperature (temperature in the range of 20 ℃ ~ 80 ℃), the initial permeability ui and the maximum permeability um are larger, lower or higher temperature measurement, conditional users can be carried out in liquid nitrogen or high temperature heating test box;
2) With the increase of temperature (the temperature is in the range of 20 ℃ ~ 80 ℃), the saturation Js decreases and the remanence Jr increases;
3) The coercivity Hc reaches the maximum value at about 0 ℃;
4), from the test data, under low temperature conditionsinitial permeabilityfalling fast, to improvePermalloyIt is necessary to study the possible reasons for the performance decline of shielding materials under low temperature conditions, and improve the new process!
Related News
Hunan Forever Elegance Technology Co.,Ltd.
Address: 10th Floor, New Cooperation International Trade City, Economic and Technological Development Zone, Loudi City, Hunan Province (Intersection of Xiangyang Street East and Yingchun Road)
Douyin
Customer Message
Copyright © Hunan Forever Elegance Technology Co.,Ltd.