CN203705629U - Device for measuring magnetic susceptibility of material under high temperature - Google Patents
Device for measuring magnetic susceptibility of material under high temperature Download PDFInfo
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- CN203705629U CN203705629U CN201420001535.6U CN201420001535U CN203705629U CN 203705629 U CN203705629 U CN 203705629U CN 201420001535 U CN201420001535 U CN 201420001535U CN 203705629 U CN203705629 U CN 203705629U
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- magnetic field
- sample hose
- temperature
- sample
- high temperature
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- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
- Measuring Magnetic Variables (AREA)
Abstract
The utility model discloses a device for measuring magnetic susceptibility of a material under high temperature. A sample tube is suspended in a furnace internal cavity formed by a tubular silicon carbon tube heating body. A heat-insulation layer wraps the periphery of the tubular silicon carbon tube heating body so that a uniform temperature field is formed in the furnace internal cavity. A temperature-controlled instrument is connected with a thermocouple in a signaling way. The temperature test end of the thermocouple is installed in the area, which is close to the sample tube, of the furnace internal cavity. The control module of the temperature-controlled instrument directly controls heating power of the tubular silicon carbon tube heating body. The sample tube is a crucible made of corundum. The sample tube is hung below an electronic balance. A magnetic field generator generates a magnetic field gradient accumulation steady area in the area in which the sample tube is position via a superconductive strong magnet so that the tested sample arranged in the sample tube is completely positioned in the magnetic field gradient accumulation steady area formed by the magnetic field generator. Magnetic susceptibility data of the material under different high temperature can be measured by the device with the highest temperature of being 1400 DEG C. Besides, change of magnetic susceptibility of the material along with temperature can also be measured so that the device is high in controllability and easy to operate.
Description
Technical field
The utility model relates to a kind of material electromagnetics parameter measuring apparatus, particularly relates to a kind of device of measurement of species magnetic susceptibility.For the magnetic property detection technique field of material.
Background technology
Along with the convenient easy realization of superconducting intense magnetic field, material electromagnetic process receives increasing concern, and the decision principal element of material electromagnetic process is the variation of its system magnetic free energy, wherein the magnetic susceptibility of material is critical data wherein, so be also more and more subject to the attention of height about the determination and analysis of magnetic susceptibility.This patent, for phase transition process under the high temperature of magnetic field, provides the method for test substances magnetic susceptibility under a kind of high temperature.Traditional Gouy method only can measurement of species magnetic susceptibility at normal temperatures, and the measurement temperature of vibrations sample magnetometer also only can reach 1000K, can not meet the needs of material magnetic susceptibility measurement under high temperature.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, the device of measurement of species magnetic susceptibility under a kind of high temperature is provided, by accurately weighing the quality in the time that stationary magnetic field gradient is amassed Yu Wu magnetic field, region at different temperatures place material, finally obtain the mass susceptibility of this material, can measure material and can reach the magnetic susceptibility data at 1400 DEG C in maximum temperature, meet material and detect service request in high-temp magnetic rate.
Create object for reaching foregoing invention, technological invention design of the present utility model is as follows:
Apply a longitudinal magnetic field in whole device outside, and to require that a steady can be manufactured in this magnetic field and direction be the long-pending region of magnetic field gradient straight down, make material under this magnetic field, can be subject to an effect of stablizing downward power.From the principle of Gouy method measurement of species magnetic susceptibility, stressed in magnetic field of the object that quality is m is:
(1)
F in formula
zfor the power that material is subject in magnetic field, χ
mfor the mass susceptibility of material, the quality that m is test substance,
for the magnetic field gradient of material position amasss,
for permeability of vacuum, it is constant.
And the power that material is subject in magnetic field can be characterized by following formula:
(2)
Δ m is that sample and corundum crucible are put into behind magnetic field with putting into of poor quality before magnetic field and deducted corundum crucible and put into behind magnetic field and put into of poor quality before magnetic field, and g is acceleration of gravity.Therefore, in order to obtain χ
mnumerical value, we only need to measure the quality difference of front and back, magnetic field.
From formula (1) and formula (2), the mass susceptibility of material can be expressed as follows:
(3)
The corundum crucible that sample is housed is suspended under electronic balance, and the silk thread of suspention adopts high temperature resistant silk, and this material at high temperature thermal expansion is very little, makes sample position remain at the long-pending region of constant magnetic field gradient.For fear of cause the drift of sample and unstable because sample quality is too low, take following methods: an additional weight pendant again in corundum crucible bottom, the residing position of this pendant is outside magnetic field, makes it not be subject to the effect of magnetic force.
According to above technological invention design, the technical solution adopted in the utility model is as follows:
The device of measurement of species magnetic susceptibility under a kind of high temperature, by the electronic balance with hook, balance support, sample hose, magnetic field generator and susceptibility analysis system form, balance stent support electronic balance, sample hose be can load tested sample have an end container, sample hose is suspended on the hook of electronic balance, sample hose is arranged in the magnetic field environment of magnetic field generator formation, the weighing data signal output part of electronic balance is connected with the input end of susceptibility analysis system, by the magnetic susceptibility information of susceptibility analysis system output tested sample, sample hose is suspended in the body of heater inner chamber being formed by the tubular carborunbum tube calandria vertically arranging, be wrapped in heat-insulation layer in tubular carborunbum tube calandria periphery, make to form homogeneous temperature field in body of heater inner chamber, be provided with temperature controller in tubular carborunbum tube calandria outside, the signal input part of temperature controller is connected with the signal output part of Type B thermopair, the temperature test end of Type B thermopair is installed near in the body of heater cavity region of sample hose, the control module of temperature controller is directly controlled the heating power of tubular carborunbum tube calandria, sample hose is corundum crucible, sample hose is suspended to the below of electronic balance by high temperature resistant line, magnetic field generator produces the long-pending steady of magnetic field gradient region in sample hose region of living in by superconduction kicker magnet, the direction of magnetic field intensity is the direction of the arrow indication of B in Fig. 1, the tested sample that makes to pack in sample hose is amassed in steady region in the magnetic field gradient of magnetic field generator formation completely.The utility model by carborunbum tube calandria, Type B thermopair, crucible, sample and high temperature resistant silk be co-located in body of heater, Type B thermocouple probe position is the residing corundum crucible of sample bottom.In order to reduce greatly measuring error, while first measuring crucible zero load, the temperature variant data m of its quality when without magnetic field
1, then measure the temperature variant data m of quality in magnetic field
2, then sample is put into corundum crucible, measure it at the temperature variant data m of the quality without under magnetic field condition
3, and the temperature variant data m of quality in magnetic field
4.Can obtain Δ m=(m by these four groups of data
4-m
3)-(m
2-m
1).The utility model is according to Gouy method magnetic susceptibility measurement principle, utilize electronic balance accurately to weigh the quality in the time that stationary magnetic field gradient is amassed Yu Wu magnetic field, region at different temperatures place material, utilize both quality difference and Gouy method computing formula, obtain the mass susceptibility of this material.
As improvement of the present utility model, hang pendant by the high temperature resistant line of another root again in the bottom of sample hose, the magnetic field environment that pendant forms away from magnetic field generator, and be positioned at below the outside of tubular carborunbum tube calandria.
Above-mentioned pendant is preferably taper shape.
The preferred integrated rectification module of above-mentioned temperature controller, realizes the temperature of sample hose present position is freely controlled, and makes the tested sample magnetic susceptibility data of susceptibility analysis system output sample hose at different temperatures place.
The long-pending steady of the magnetic field gradient region that above-mentioned magnetic field generator produces, along the length of sample hose vertical displacement direction, is preferably 1.5～3 times of sample hose sample to be tested length.
The utility model compared with prior art, has following substantive distinguishing features and advantage:
1. compared with traditional measuring method, under the utility model high temperature, the device of measurement of species magnetic susceptibility can be measured the magnetic susceptibility data of material under different high temperature, and its maximum temperature can reach 1400 DEG C, can also measurement of species magnetic susceptibility variation with temperature.
2. under the utility model high temperature, the apparatus structure of measurement of species magnetic susceptibility is simple, and temperature variation is flexible, and controllability is strong, easily operation.
Brief description of the drawings
Fig. 1 is the structural representation of the device of measurement of species magnetic susceptibility under the utility model embodiment mono-high temperature.
Embodiment
Preferred embodiment accompanying drawings of the present utility model is as follows:
embodiment mono-:
In the present embodiment, referring to Fig. 1, the device of measurement of species magnetic susceptibility under a kind of high temperature, by the electronic balance 1 with hook, balance support 11, sample hose 4, magnetic field generator 10 and susceptibility analysis system 12 form, balance support 11 supports electronic balance 1, sample hose 4 has an end container for what can load tested sample, sample hose 4 is suspended on the hook of electronic balance 1, sample hose 4 is arranged in the magnetic field environment that magnetic field generator 10 forms, the input end of the weighing data signal output part susceptibility analysis system 12 of electronic balance 1 connects, export the magnetic susceptibility information of tested sample by susceptibility analysis system 12, sample hose 4 is suspended in the body of heater inner chamber being formed by the tubular carborunbum tube calandria 3 vertically arranging, be wrapped in heat-insulation layer 2 in tubular carborunbum tube calandria 3 peripheries, make to form homogeneous temperature field in body of heater inner chamber, be provided with temperature controller 8 in tubular carborunbum tube calandria 3 outsides, the signal input part of temperature controller 8 is connected with the signal output part of Type B thermopair 5, the temperature test end of Type B thermopair 5 is installed near in the body of heater cavity region of sample hose 4, the control module of stating temperature controller 8 is directly controlled the heating power of tubular carborunbum tube calandria 3, sample hose 4 is corundum crucible processed, sample hose 4 is suspended to the below of electronic balance 1 by high temperature resistant line 6, sample hose 4 and high temperature resistant line 6 all can be high temperature resistant, and expansion coefficient is lower, range estimation is less than its expansion length at high temperature, magnetic field generator 10 produces the long-pending steady of magnetic field gradient region 9 in sample hose 4 region of living in by superconduction kicker magnet, make to pack in the long-pending steady of the magnetic field gradient region 9 that the tested sample in sample hose 4 forms in magnetic field generator 10 completely.
In the present embodiment, referring to Fig. 1, hang conical pendant 7, the magnetic field environment that pendant 7 forms away from magnetic field generator 10 by the high temperature resistant line 6 of another root again in the bottom of sample hose 4, and be positioned at below the outside of tubular carborunbum tube calandria 3, with the fixing whole measurement mechanism of balance.
In the present embodiment, the integrated rectification module of temperature controller 8, realizes the temperature of sample hose 4 present positions is freely controlled, and makes susceptibility analysis system 12 export the tested sample magnetic susceptibility data of sample hose 4 at different temperatures place.
In the present embodiment, the measuring accuracy of electronic balance 1 is more than 0.1mg, to ensure the degree of accuracy of data.The long-pending superconduction kicker magnet used of controlling magnetic field gradient has one section of constant magnetic field gradient product space, and its length is greater than sample hose length, and the diameter of superconduction kicker magnet workspace is greater than the external diameter of heating arrangement, and magnet uniform magnetic field intensity is more than 0.5T.Tested sample material is nickel base superalloy DD483, and its length is 15mm, diameter 5mm.The temperature of controlling calandria reaches after 300 DEG C, 450 DEG C, 600 DEG C successively, is incubated 15min, and recorded electronic balance 1 data, tries to achieve the mass susceptibility χ of this high temperature alloy by calculating Δ m
m.Calculate to such an extent that the magnetic susceptibility of this tested sample material is respectively 3.2128*10 at 300 DEG C, 450 DEG C, 600 DEG C temperature by the data that device is surveyed of measurement of species magnetic susceptibility under the present embodiment high temperature
-5cm
3/ g, 3.1656 * 10
-5cm
3/ g, 2.7386 * 10
-5cm
3/ g, 300 DEG C, 450 DEG C, 600 DEG C data 3.2471*10 that obtain with vibrations sample magnetic strength instrumentation
-5cm
3/ g, 3.2526*10
-5cm
3/ g, 3.1505*10
-5cm
3/ g contrast, its error is respectively 1.06%, 2.67%, 13.07%.The device that can find out measurement of species magnetic susceptibility under the present embodiment high temperature has very high measuring accuracy, meets and measures requirement.
embodiment bis-:
The present embodiment and embodiment mono-are basic identical, and special feature is:
In the present embodiment, tested sample material is also nickel base superalloy DD483, and its length is 15mm, diameter 5mm.Utilize the device of measurement of species magnetic susceptibility under the present embodiment high temperature this tested sample to be carried out continuously under 1000 DEG C of conditions to twice measurement, the mass susceptibility χ recording
mbe respectively 2.5682*10
-5cm
3/ g and 2.3008*10
-5cm
3/ g, its error is 10.41%; Same double measurement result at 1100 DEG C is respectively 2.5969*10
-5cm
3/ g and 2.2168*10
-5cm
3/ g, its error is 14.64%; And under 1200 DEG C of conditions, carrying out continuously twice measurement, the mass susceptibility recording is respectively 2.2521*10
-5cm
3/ g and 2.0386*10
-5cm
3/ g, its error is 9.48%.Measuring error between the vibrating sample magnetometer that maturation is used is now inferior and inferior for same sample has also reached more than 15%, can find out that the measurement device material magnetic susceptibility of measurement of species magnetic susceptibility under the present embodiment high temperature has good repeatability.
By reference to the accompanying drawings the utility model embodiment is illustrated above; but the utility model is not limited to above-described embodiment; the object that can also create according to utility model of the present utility model is made multiple variation; the change made under all Spirit Essences according to technical solutions of the utility model and principle, modification, substitute, combination, simplify; all should be equivalent substitute mode; as long as meet structure and aufbauprinciple for the device of measurement of species magnetic susceptibility under the utility model high temperature, all belong to protection domain of the present utility model.
Claims (5)
1. the device of measurement of species magnetic susceptibility under a high temperature, by the electronic balance (1) with hook, balance support (11), sample hose (4), magnetic field generator (10) and susceptibility analysis system (12) form, described balance support (11) supports described electronic balance (1), described sample hose (4) has an end container for what can load tested sample, described sample hose (4) is suspended on the hook of described electronic balance (1), described sample hose (4) is arranged in the magnetic field environment of described magnetic field generator (10) formation, the weighing data signal output part of described electronic balance (1) is connected with the input end of described susceptibility analysis system (12), by the magnetic susceptibility information of described susceptibility analysis system (12) output tested sample, it is characterized in that: described sample hose (4) is suspended in the body of heater inner chamber being formed by the tubular carborunbum tube calandria (3) vertically arranging, be wrapped in heat-insulation layer (2) in described tubular carborunbum tube calandria (3) periphery, make to form homogeneous temperature field in body of heater inner chamber, be provided with temperature controller (8) in described tubular carborunbum tube calandria (3) outside, the signal input part of described temperature controller (8) is connected with the signal output part of Type B thermopair (5), the temperature test end of described Type B thermopair (5) is installed near in the body of heater cavity region of described sample hose (4), the control module of described temperature controller (8) is directly controlled the heating power of described tubular carborunbum tube calandria (3), described sample hose (4) is corundum crucible processed, described sample hose (4) is suspended to the below of described electronic balance (1) by high temperature resistant line (6), described magnetic field generator (10) produces the long-pending steady region (9) of magnetic field gradient in described sample hose (4) region of living in by superconduction kicker magnet, the tested sample that makes to pack in described sample hose (4) is amassed in steady region (9) in the magnetic field gradient of described magnetic field generator (10) formation completely.
2. the device of measurement of species magnetic susceptibility under high temperature according to claim 1, it is characterized in that: the bottom at described sample hose (4) hangs pendant (7) by the high temperature resistant line of another root (6) again, the magnetic field environment that described pendant (7) forms away from described magnetic field generator (10), and be positioned at below the outside of described tubular carborunbum tube calandria (3).
3. the device of measurement of species magnetic susceptibility under high temperature according to claim 2, is characterized in that: described pendant (7) is for conical.
4. according to the device of measurement of species magnetic susceptibility under high temperature described in any one in claim 1～3, it is characterized in that: the integrated rectification module of described temperature controller (8), realize the temperature of sample hose (4) present position is freely controlled, make the tested sample magnetic susceptibility data of described susceptibility analysis system (12) output sample hose (4) at different temperatures place.
5. according to the device of measurement of species magnetic susceptibility under high temperature described in any one in claim 1～3, it is characterized in that: the long-pending steady region (9) of magnetic field gradient that described magnetic field generator (10) produces, along the length of described sample hose (4) vertical displacement direction, is 1.5～3 times of described sample hose (4) sample to be tested length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420001535.6U CN203705629U (en) | 2014-01-02 | 2014-01-02 | Device for measuring magnetic susceptibility of material under high temperature |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420001535.6U CN203705629U (en) | 2014-01-02 | 2014-01-02 | Device for measuring magnetic susceptibility of material under high temperature |
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| Publication Number | Publication Date |
|---|---|
| CN203705629U true CN203705629U (en) | 2014-07-09 |
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ID=51056049
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420001535.6U Expired - Fee Related CN203705629U (en) | 2014-01-02 | 2014-01-02 | Device for measuring magnetic susceptibility of material under high temperature |
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| CN (1) | CN203705629U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108431621A (en) * | 2015-12-03 | 2018-08-21 | 生命诊断公司 | Temperature control compensated magnetic permeability detector |
| CN110118679A (en) * | 2019-04-30 | 2019-08-13 | 西北工业大学 | A kind of temperature is up to 1600 DEG C of magnetic field material processing unit |
-
2014
- 2014-01-02 CN CN201420001535.6U patent/CN203705629U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108431621A (en) * | 2015-12-03 | 2018-08-21 | 生命诊断公司 | Temperature control compensated magnetic permeability detector |
| CN110118679A (en) * | 2019-04-30 | 2019-08-13 | 西北工业大学 | A kind of temperature is up to 1600 DEG C of magnetic field material processing unit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140709 Termination date: 20150102 |
|
| EXPY | Termination of patent right or utility model |