CN104129807A - Microcrystalline material MgCaO powder, microcrystalline material as well as preparation methods and applications of MgCaO powder and microcrystalline material - Google Patents
Microcrystalline material MgCaO powder, microcrystalline material as well as preparation methods and applications of MgCaO powder and microcrystalline material Download PDFInfo
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Abstract
The invention belongs to the field of microcrystalline materials, and in particular relates to microcrystalline material MgCaO powder as well as a preparation method and an application thereof. The microcrystalline material MgCaO powder is characterized in that the specific gravity ratio of Mg, Ca and O in the MgCaO powder is shown as xMg(1-x)CaxO, wherein x is greater than or equal to 0.04 and less than or equal to 0.3; the MgCaO powder is formed by sintering CaO powder and MgO powder. A microcrystalline material is formed after the MgCaO powder is dissolved in a solvent. When the microcrystalline material containing the MgCaO powder is applied into a plasma panel, the low energy band width is maintained while the stable state of environmental gases is kept. The preparation method is low in cost, simple and easy to operate.
Description
Technical field
The invention belongs to micro crystal material field, relate in particular to micro crystal material MgCaO powder and micro crystal material and preparation method and application.
Background technology
In recent years, showed Device field, when height is refined, the requirement of high-level efficiency and lower voltage was being improved.Plasma display (PDP), for meeting this generic request, has been taked to use and has been mixed calcium oxidation film layer, and in discharge gas, increased the combination of Xe dividing potential drop.But these all can cause electric discharge, speckle increases the weight of image quality reduction, and produces discharge ionization voltage, maintains the problem that voltage rises, and causes the result contrary with driving voltage lower voltage.
Because of the forbidden band (Band Gap) of calcium oxide (CaO) and electron affinity (Affinity), amount to width (bandwidth) as shown in Figure 1, than the low 1.45eV of magnesium oxide (MgO), therefore compare with magnesium oxide (MgO), more easily under low-yield, from material surface, obtain electronics.But calcium oxide (CaO) has the rotten problems of effect of ambient gas such as being subject to H2O, CO2.
For the material using, mostly that uses at present is magnesium oxide micro crystal material, can only reach the effect of raising the efficiency, and the speckle of screen is improved, and image quality raising effect is very little.
Summary of the invention
In order to solve above technical problem, the invention provides a kind of micro crystal material MgCaO powder and micro crystal material and preparation method, be applied in plasma panel, when environmental gas is kept to steady state, can maintain low-energy zone width, high-luminous-efficiency; Preparation method's cost is low, simple, easy to operate.
Solve a kind of micro crystal material MgCaO powder of above technical problem
,it is characterized in that: described MgCaO powder is formed by CaO powder and MgO powder sintering, wherein in MgCaO powder, Mg, Ca, O quality proportioning are Mg (1-x) CaxO, 0.04≤x≤0.3.
In described MgCaO powder, Mg, Ca, O quality proportioning are Mg (1-x) CaxO, 0.05≤x≤0.2.
In described MgCaO powder MgCaO, Mg, Ca, O quality proportioning are Mg (1-x) CaxO, 0.06≤x≤0.15.
A kind of preparation method of crystallite MgCaO powder in the present invention
,it is characterized in that: comprise the steps:
(1) CaO powder is mixed to mass ratio CaO:MgO=x:1-x, 0.04≤x≤0.3 with MgO powder;
(2) mixed powder forms the compound of CaO and MgO after sintering, i.e. MgCaO powder; Sintering temperature 1100-1400 ℃, sintering time 4-7h.If temperature and time was lower than 1100 ℃, 4 hours, crystallinity and the homogeneity of powder change, and the emissive power of electronics will reduce, the Efficiency Decreasing of indicating meter; Temperature and time was higher than 1400 ℃, 7 hours, and material, by recrystallize, causes particle diameter to increase, and does not utilize the spraying of material, and the simultaneous temperature rising time lengthens increases the time lengthening that causes material produce, output minimizing, cost.
A kind of micro crystal material in the present invention
,it is characterized in that: described material prescription comprises MgCaO powder, solvent mass ratio MgCaO powder: solvent=3:16-18.
Different solvents has different effects, uses suitable organic solvent can reduce material and reunites and produce precipitation, can not make material rotten.
Solvent described in the present invention is that mass percent concentration is 99.9% Virahol or ethanol.
A kind of preparation method of micro crystal material in the present invention
,it is characterized in that: comprise the steps:
(1) CaO powder is mixed to mass ratio CaO:MgO=x:1-x, 0.04≤x≤0.3 with MgO powder;
(2) mixed powder forms the compound of CaO and MgO after sintering, i.e. MgCaO powder; Sintering temperature 1100-1400 ℃, sintering time 4-7h;
(3) MgCaO powder after thermal treatment is pulverized, sneaked in solvent, use ball to roll method, the crystalline particle dispersion treatment of condensing is become to single crystalline particle, thereby be configured to liquid, i.e. micro crystal material slurry.
Ball rolls method for according to weight ratio liquid: zirconia ball=4-6:1, by liquid stir >=6h together with zirconia ball (2mm) placement, after the interior microcrystal grain of liquid scatter completely, zirconia ball is separated, and this method can configure liquid fast.
CaO:MgO=x:1-x in described step (1), 0.05≤x≤0.2, is further optimized for 0.06≤x≤0.15.
Described micro crystal material is applied in plasma panel.
Described application method is that micro crystal material is sprayed on separately magnesium oxide rete or mixes on calcium magnesium oxide rete, or micro crystal material mixes with MgO slurry and is sprayed on magnesium oxide rete or mixes on calcium magnesium oxide rete.
Micro crystal material in the present invention is calcium oxide and magnesian compound, calcium oxide bandwidth shortens 1.45eV compared with magnesium oxide, therefore micro crystal material is more easily obtained electronics from material surface under low-yield, make secondary electron yield higher, thereby promote the luminous efficiency of plasma display, and make electric discharge in screen stable and uniform more; This micro crystal material has the characteristic of high-fineness, high purity, high crystalline, high-density; it can be uniformly dispersed on coatings; material is not easy to be subject to extraneous pollution simultaneously, can play a very good protection, and the speckle problem of screen is had to good improvement effect.
The particle dia of the electronic emission material particle in the present invention in micro crystal material is 50nm～500nm, the content < 125PPM of impurity.Electron emission particle be shaped as cubes, as Fig. 7, in x-ray inflection performance chart, represent that the maximum value of (200) orientation is compared and had high crystalline with the maximum value of other orientations.And angle 2 θ of (200) orientation maximum value of x-ray inflection characteristic figure compare with magnesium oxide (MgO), there is the dwindling of scope of 0.01 ° to 0.05 °.
Micro crystal material in the present invention can be evenly distributed in coatings; protection coatings is not subject to outside contamination; the foreign gas of simultaneously more easily adsorbing discharge space in ageing process; make discharge space gas purer; can effectively improve speckle, reach the effect of anti-speckle, lifting plasma display image quality effect.
Micro crystal material in the present invention is applied in plasma panel, can effectively improve PDP display electric discharge speckle, improve its image quality, reach driving voltage and maintain and in the constant situation of voltage, make optical efficiency increase, realize plasma display high image quality, high-level efficiency object.
Accompanying drawing explanation
Fig. 1 is the design sketch of micro crystal material in the present invention
Fig. 2 is luminous efficiency effect schematic diagram of the present invention
Fig. 3 is the present invention's result of use schematic diagram on magnesium oxide rete
Fig. 4 is the present invention's result of use schematic diagram on magnesium oxide rete
Fig. 5 is the electron microscope description figure of micro crystal material of the present invention
Fig. 6 is the x-ray electronics inflection analytical characteristics figure of micro crystal material of the present invention
Fig. 7 is the x-ray electronics inflection analytical characteristics figure of micro crystal material of the present invention
Fig. 8 is that micro crystal material of the present invention improves speckle effect schematic diagram
Fig. 9 is the plasma display pie graph of example 18 of the present invention
Figure 10 is the plasma display pie graph of example 19 of the present invention
Figure 11 is the luminous efficiency schematic diagram of example 19 of the present invention
Wherein, icon sequence number is specially: 1. the electron emission particle 2. that micro crystal material forms be take the 4. prebasal plate of protective layer 5.PDP of the electron emission particle that magnesium oxide (MgO) is main component (the electron emission particle that has Peak within the scope of 2-1.300nm～500nm has the electron emission particle of Peak within the scope of 2-2.100～300nm)
Embodiment
Embodiment 1
By calcium oxide (CaO) and magnesium oxide (MgO) powder in mass ratio routine x:1-x mix, x=0.3, forms the compound of CaO and MgO, i.e. micro crystal material MgCaO powder after sintering; 1100 ℃ of sintering temperatures, sintering time 7h, obtains MgCaO powder.
This micro crystal material MgCaO powder is white, and size of particles is at the cubes powder of 50nm～500nm.Specifically be improved luminous efficiency, anti-speckle promotes the effect of indicating meter image quality.
Compare with independent MgO powder, this micro crystal material MgCaO powder bandwidth is narrower, and secondary electron yield is higher, compares with independent CaO powder, and this micro crystal material is more stable, is not easy to be subject to extraneous pollution.Effect in following examples 2-6 is close.
Embodiment 2
By calcium oxide (CaO) and magnesium oxide (MgO) powder in mass ratio routine x:1-x mix, x=0.04, forms the compound of CaO and MgO, i.e. micro crystal material MgCaO powder after sintering; 1400 ℃ of sintering temperatures, sintering time 4h, obtains MgCaO powder.
Embodiment 3
By calcium oxide (CaO) and magnesium oxide (MgO) powder in mass ratio routine x:1-x mix, x=0.06, forms the compound of CaO and MgO, i.e. micro crystal material MgCaO powder after sintering; 1300 ℃ of sintering temperatures, sintering time 6h, obtains MgCaO powder.
Embodiment 4
By calcium oxide (CaO) and magnesium oxide (MgO) powder in mass ratio routine x:1-x mix, x=0.2, forms the compound of CaO and MgO, i.e. micro crystal material MgCaO powder after sintering; 1200 ℃ of sintering temperatures, sintering time 5h, obtains MgCaO powder.
Embodiment 5
By calcium oxide (CaO) and magnesium oxide (MgO) powder in mass ratio routine x:1-x mix, x=0.15, forms the compound of CaO and MgO, i.e. micro crystal material MgCaO powder after sintering; 1250 ℃ of sintering temperatures, sintering time 5.5h, obtains MgCaO powder.
Embodiment 6
By calcium oxide (CaO) and magnesium oxide (MgO) powder in mass ratio routine x:1-x mix, x=0.05, forms the compound of CaO and MgO, i.e. micro crystal material MgCaO powder after sintering; 1150 ℃ of sintering temperatures, sintering time 4h, obtains MgCaO powder.
Embodiment 7
By calcium oxide (CaO) and magnesium oxide (MgO) powder in mass ratio routine x:1-x mix, x=0.3, forms the compound of CaO and MgO, i.e. micro crystal material MgCaO powder after sintering; 1100 ℃ of sintering temperatures, sintering time 7h.After micro crystal material MgCaO powder after sintering is pulverized, sneak into quality percentage composition and be in 99.9% Virahol, MgCaO powder: Virahol=3:17.Use ball to roll method, the crystalline particle dispersion treatment of condensing is become to single crystalline particle, thereby be configured to liquid, be i.e. micro crystal material.
Ball rolls method and stirs together > 6h for placing 1 kilogram of 2mm zirconia ball according to 5 kilograms of liquids, and in liquid, microcrystal grain after scattering is completely separated zirconia ball, and this method can configure liquid fast.
In the present invention, by calcium oxide (Ca) and magnesium oxide (MgO) combination, form micro crystal material, form electronic emission material particle.
Embodiment 8
By calcium oxide (CaO) and magnesium oxide (MgO) powder in mass ratio routine x:1-x mix, x=0.04, forms the compound of CaO and MgO, i.e. micro crystal material MgCaO powder after sintering; 1400 ℃ of sintering temperatures, sintering time 4h.After micro crystal material MgCaO powder after sintering is pulverized, sneak into quality percentage composition and be in 99.9% Virahol, MgCaO powder: Virahol=3:16, use ball to roll method, the crystalline particle dispersion treatment of condensing is become to single crystalline particle, thereby be configured to liquid, be i.e. micro crystal material.
Ball rolls method and stirs together > 6h for placing 1 kilogram of 2mm zirconia ball according to 5 kilograms of liquids, and in liquid, microcrystal grain after scattering is completely separated zirconia ball, and this method can configure liquid fast.
Embodiment 9
By calcium oxide (CaO) and magnesium oxide (MgO) powder in mass ratio routine x:1-x mix, x=0.06, forms the compound of CaO and MgO, i.e. micro crystal material MgCaO powder after sintering; 1300 ℃ of sintering temperatures, sintering time 6h.After micro crystal material MgCaO powder after sintering is pulverized, sneak into quality percentage composition and be in 99.9% ethanol, MgCaO powder: ethanol=3:18, use ball to roll method, the crystalline particle dispersion treatment of condensing is become to single crystalline particle, thereby be configured to liquid, be i.e. micro crystal material.
Ball rolls method and stirs together > 6h for placing 1 kilogram of 2mm zirconia ball according to 4 kilograms of liquids, and in liquid, microcrystal grain after scattering is completely separated zirconia ball, and this method can configure liquid fast.
Embodiment 10
By calcium oxide (CaO) and magnesium oxide (MgO) powder in mass ratio routine x:1-x mix, x=0.2, forms the compound of CaO and MgO, i.e. micro crystal material MgCaO powder after sintering; 1200 ℃ of sintering temperatures, sintering time 5h.After micro crystal material MgCaO powder after sintering is pulverized, sneak into quality percentage composition and be in 99.9% ethanol, MgCaO powder: ethanol=3:17, use ball to roll method, the crystalline particle dispersion treatment of condensing is become to single crystalline particle, thereby be configured to liquid, be i.e. micro crystal material.
Ball rolls method and stirs together > 6h for placing 1 kilogram of 2mm zirconia ball according to 6 kilograms of liquids, and in liquid, microcrystal grain after scattering is completely separated zirconia ball, and this method can configure liquid fast.
Embodiment 11
By calcium oxide (CaO) and magnesium oxide (MgO) powder in mass ratio routine x:1-x mix, x=0.15, forms the compound of CaO and MgO, i.e. micro crystal material MgCaO powder after sintering; 1250 ℃ of sintering temperatures, sintering time 5.5h.After micro crystal material MgCaO powder after sintering is pulverized, sneak into quality percentage composition and be in 99.9% ethanol, MgCaO powder: ethanol=3:17, use ball to roll method, the crystalline particle dispersion treatment of condensing is become to single crystalline particle, thereby be configured to liquid, be i.e. micro crystal material.
Ball rolls method and stirs together > 6h for placing 1 kilogram of 2mm zirconia ball according to 5 kilograms of liquids, and in liquid, microcrystal grain after scattering is completely separated zirconia ball, and this method can configure liquid fast.
Embodiment 12
By calcium oxide (CaO) and magnesium oxide (MgO) powder in mass ratio routine x:1-x mix, x=0.05, forms the compound of CaO and MgO, i.e. micro crystal material MgCaO powder after sintering; 1150 ℃ of sintering temperatures, sintering time 4h.After micro crystal material MgCaO powder after sintering is pulverized, sneak into quality percentage composition and be in 99.9% Virahol, MgCaO powder: Virahol=3:17, use ball to roll method, the crystalline particle dispersion treatment of condensing is become to single crystalline particle, thereby be configured to liquid, be i.e. micro crystal material.
Ball rolls method and stirs together > 6h for placing 1 kilogram of 2mm zirconia ball according to 5 kilograms of liquids, and in liquid, microcrystal grain after scattering is completely separated zirconia ball, and this method can configure liquid fast.
Embodiment 13
By calcium oxide (CaO) and magnesium oxide (MgO) powder in mass ratio routine x:1-x mix, x=0.1, forms the compound of CaO and MgO, i.e. micro crystal material MgCaO powder after sintering; 1350 ℃ of sintering temperatures, sintering time 6h.After micro crystal material MgCaO powder after sintering is pulverized, sneak into quality percentage composition and be in 99.9% Virahol, MgCaO powder: Virahol=3:17, use ball to roll method, the crystalline particle dispersion treatment of condensing is become to single crystalline particle, thereby be configured to liquid, be i.e. micro crystal material.
Ball rolls method and stirs together > 6h for placing 1 kilogram of 2mm zirconia ball according to 5 kilograms of liquids, and in liquid, microcrystal grain after scattering is completely separated zirconia ball, and this method can configure liquid fast.
Embodiment 14
By calcium oxide (CaO) and magnesium oxide (MgO) powder in mass ratio routine x:1-x mix, x=0.8, forms the compound of CaO and MgO, i.e. micro crystal material MgCaO powder after sintering; 1100 ℃ of sintering temperatures, sintering time 4h.After micro crystal material MgCaO powder after sintering is pulverized, sneak into quality percentage composition and be in 99.9% Virahol, MgCaO powder: Virahol=3:18, use ball to roll method, the crystalline particle dispersion treatment of condensing is become to single crystalline particle, thereby be configured to liquid, be i.e. micro crystal material.
Ball rolls method and stirs together > 6h for placing 1 kilogram of 2mm zirconia ball according to 5 kilograms of liquids, and in liquid, microcrystal grain after scattering is completely separated zirconia ball, and this method can configure liquid fast.
Embodiment 15
By calcium oxide (CaO) and magnesium oxide (MgO) powder in mass ratio routine x:1-x mix, x=0.13, forms the compound of CaO and MgO, i.e. micro crystal material MgCaO powder after sintering; 1400 ℃ of sintering temperatures, sintering time 7h.After micro crystal material MgCaO powder after sintering is pulverized, sneak into quality percentage composition and be in 99.9% Virahol, MgCaO powder: Virahol=3:17, use ball to roll method, the crystalline particle dispersion treatment of condensing is become to single crystalline particle, thereby be configured to liquid, be i.e. micro crystal material.
Ball rolls method and stirs together > 6h for placing 1 kilogram of 2mm zirconia ball according to 5 kilograms of liquids, and in liquid, microcrystal grain after scattering is completely separated zirconia ball, and this method can configure liquid fast.
Embodiment 16
By calcium oxide (CaO) and magnesium oxide (MgO) powder in mass ratio routine x:1-x mix, x=0.25, forms the compound of CaO and MgO, i.e. micro crystal material MgCaO powder after sintering; 1250 ℃ of sintering temperatures, sintering time 5h.After micro crystal material MgCaO powder after sintering is pulverized, sneak into quality percentage composition and be in 99.9% Virahol, MgCaO powder: Virahol=3:18, use ball to roll method, the crystalline particle dispersion treatment of condensing is become to single crystalline particle, thereby be configured to liquid, be i.e. micro crystal material.
Ball rolls method and stirs together > 6h for placing 1 kilogram of 2mm zirconia ball according to 5 kilograms of liquids, and in liquid, microcrystal grain after scattering is completely separated zirconia ball, and this method can configure liquid fast.
Embodiment 17
By calcium oxide (CaO) and magnesium oxide (MgO) powder in mass ratio routine x:1-x mix, x=0.18, forms the compound of CaO and MgO, i.e. micro crystal material MgCaO powder after sintering; 1300 ℃ of sintering temperatures, sintering time 6h.After micro crystal material MgCaO powder after sintering is pulverized, sneak into quality percentage composition and be in 99.9% Virahol, MgCaO powder: Virahol=3:18, use ball to roll method, the crystalline particle dispersion treatment of condensing is become to single crystalline particle, thereby be configured to liquid, be i.e. micro crystal material.
Ball rolls method and stirs together > 6h for placing 1 kilogram of 2mm zirconia ball according to 5 kilograms of liquids, and in liquid, microcrystal grain after scattering is completely separated zirconia ball, and this method can configure liquid fast.
Embodiment 18
Make micro crystal material, making method is as content in embodiment 9.
As shown in Figure 9, form PDP prebasal plate (5) protective layer (4) (as by magnesium oxide and mix calcium magnesium oxide and form) upper, use spraying equipment coating micro crystal material, the electronic emission material particle (1) of formation.The particle diameter of electronic emission material particle (1) is within the scope of 50nm～500nm, and spreading rate (particle occupied area ratio) is 25%～65%, useful range.By this operation, the PDP measurement of the display characteristics result of making as shown in Figure 3, compare with the PDP of uncoated electronic emission material (1), improves approximately 8% by luminous efficiency.
The prebasal plate that protected seam covers; pass through discharge space; form plasma display (PDP) with corresponding metacoxa; above-mentioned protective layer 4 is the electron emissive films as moiety by electronic emission material particle; on above-mentioned protective layer 4; the electronic emission material particle layer that at least contains the electronic emission material particle (1) of the compound formation being comprised of calcium oxide (CaO) and magnesium oxide (MgO), has high secondary electron yield, resistance to ion bombardment, disruptive strength.
Embodiment 19
Make micro crystal material, making method is as content in embodiment 9.
As shown in figure 10; electronic emission material particle (2) that the electronic emission material particle (1) consisting of micro crystal material and the magnesium oxide (MgO) of take are main component mixes, with magnesium oxide or take and mix the upper spray coating of protective layer (4) that calcium magnesium oxide is main component.Electronic emission material particle (2), in the luminous Spectrum of CL, has the electronic emission material particle (2-2) of Peak to mix by having within the scope of 300nm～500nm within the scope of the electronic emission material particle (2-1) of Peak and 100～300nm.Upper by after electron emission particle (1) and (2) mixing coating at protective layer (4) again; the PDP measurement of the display characteristics result of making as shown in figure 11; compare with the PDP of uncoated electronic emission material particle (1) (2), luminous efficiency improves approximately 15%.
As mentioned above, upper by the micro crystal material of low-energy zone width being coated on to protective layer (4), can improve luminous efficiency.And micro crystal material and magnesium oxide (MgO) slurry are mixed, are coated with, because it interacts, can improve luminous efficiency.Meanwhile, crystallite particle can both be evenly distributed in coatings, and protection coatings is not subject to outside contamination; the foreign gas of simultaneously more easily adsorbing discharge space in ageing process; more gas is purer to make discharge space, can effectively improve speckle, reaches the effect of anti-speckle.
Concentration analysis in proportioning
By the medium top configuration micro crystal material of configuration in discharge gas (as Xe+Ne), at 2 parallel poles of medium layer bottom configuration, during AC alternating current discharge, as shown in Figure 2, the proportioning of MgO and CaO is as MgxCa (1-x) O, and, there is high luminous efficiency 0.04≤x≤0.30.The proportioning that is applicable to scope of take is like this basis, when micro crystal material compound Mg CaO electronic emission material particle keeps steady state to environmental gas, can maintain low-energy zone width (Band Gap+Affinity), can be well as the micro crystal material of applying on plasma panel.
Micro crystal material is applied on magnesium oxide rete, in micro crystal material MgCaO powder in CaO content 6% to 20% scope, while approaching 15% along with being increased to of CaO content, the luminous efficiency of plasma panel constantly declines, driving voltage and maintain voltage and constantly rise (as shown in Figure 2);
Micro crystal material is applied to and mixed on calcium magnesium oxide rete, in micro crystal material MgCaO powder in CaO content 6% to 20% scope, CaO content is during from 6% increase by 15%, the efficiency of plasma panel constantly rises, driving voltage and maintain voltage and remain unchanged, when CaO content is increased to 20% from 15%, the efficiency of plasma panel starts to decline, driving voltage and maintain voltage and keep starting rise (as shown in Figure 3).
In micro crystal material MgCaO powder, when CaO content is 6-15%, effect has better advantage, reaches best effect 10% time.
The impact of performance is analyzed
As shown in Figure 5, the electronic emission material particle that in the present invention, micro crystal material forms, is the xln with cube shaped.
As shown in Figure 6, XRD analysis result shows that the micro crystal material in the present invention has the high crystalline of strong (200) orientation.
As shown in Figure 7, in the present invention, micro crystal material is compared with magnesium oxide (MgO) particle, represents that angle 2 θ of (200) orientation reduce 0.03 °.Micro crystal material consists of basis with calcium oxide (CaO) and the compound of magnesium oxide (MgO), and crystal is harder, longer service life.
As shown in Figure 8, micro crystal material granular size in the present invention at 50nm between 500nm, there is high fineness, impurity level content is less than 125PPM, having high purity structure is the cube structure of 200 crystalline orientations, erratic composition than before has high crystallinity, high crystalline due to this micro crystal material, make it be not easy to be subject to outside contamination, and can be evenly distributed in coatings, protection coatings is not subject to outside contamination, the foreign gas of simultaneously more easily adsorbing discharge space in ageing process, more gas is purer to make discharge space, can effectively improve speckle, reach the effect of anti-speckle.
Claims (9)
1. a micro crystal material MgCaO powder
,it is characterized in that: described MgCaO powder is formed by CaO powder and MgO powder sintering, wherein in MgCaO powder, Mg, Ca, O quality proportioning are Mg (1-x) CaxO, 0.04≤x≤0.3.
2. according to a kind of micro crystal material MgCaO powder described in claim 1
,it is characterized in that: in described MgCaO powder, Mg, Ca, O quality proportioning are Mg (1-x) CaxO, 0.05≤x≤0.2.
3. according to a kind of crystallite MgCaO powder described in claim 1
,it is characterized in that: in described MgCaO powder, Mg, Ca, O quality proportioning are Mg (1-x) CaxO, 0.06≤x≤0.15.
4. according to the preparation method of a kind of crystallite MgCaO powder described in any one in claim 1-3
,it is characterized in that: comprise the steps:
(1) CaO powder is mixed to mass ratio CaO:MgO=x:1-x, 0.04≤x≤0.3 with MgO powder;
(2) mixed powder forms the compound of CaO and MgO after sintering, i.e. MgCaO powder; Sintering temperature 1100-1400 ℃, sintering time 4-7h.
5. according to a kind of micro crystal material described in claim 1
,it is characterized in that: described material prescription comprises MgCaO powder, solvent mass ratio MgCaO powder: solvent=3:16-18.
6. a kind of micro crystal material according to claim 5
,it is characterized in that: described solvent is that mass percent concentration is 99.9% Virahol or ethanol.
7. the preparation method of a kind of micro crystal material according to claim 5
,it is characterized in that: comprise the steps:
(1) CaO powder is mixed to mass ratio CaO:MgO=x:1-x, 0.04≤x≤0.3 with MgO powder;
(2) mixed powder forms the compound of CaO and MgO after sintering, i.e. MgCaO powder; Sintering temperature 1100-1400 ℃, sintering time 4-7h;
(3) the MgCaO powder after thermal treatment is pulverized, sneaked in solvent, use ball to roll method, the crystalline particle dispersion treatment of condensing is become to single crystalline particle, thereby be configured to liquid, be i.e. micro crystal material.
8. according to the application of a kind of micro crystal material described in any one in claim 1-3 or 5
,it is characterized in that: described micro crystal material is applied in plasma panel.
9. the application of a kind of micro crystal material according to claim 8
,it is characterized in that: described application method is that micro crystal material compound Mg CaO is sprayed on separately magnesium oxide rete or mixes on calcium magnesium oxide rete, or micro crystal material compound Mg CaO mixes with MgO slurry and is sprayed on magnesium oxide rete or mixes on calcium magnesium oxide rete.
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| JP2016132690A (en) * | 2015-01-16 | 2016-07-25 | スタンレー電気株式会社 | Ultraviolet light source |
| CN112945999A (en) * | 2020-12-30 | 2021-06-11 | 广东电网有限责任公司电力科学研究院 | Secondary electron emission coefficient calculation method and computer terminal equipment |
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| CN102822113A (en) * | 2010-05-20 | 2012-12-12 | 达泰豪化学工业株式会社 | Sintered magnesium oxide material, and process for production thereof |
| CN103236387A (en) * | 2013-04-16 | 2013-08-07 | 四川虹欧显示器件有限公司 | Gas discharge compound dielectric protective layer and plasma display panel comprising same |
| CN103415486A (en) * | 2011-03-24 | 2013-11-27 | 达泰豪化学工业株式会社 | Process for producing sintered magnesium oxide material |
| CN103539433A (en) * | 2013-09-30 | 2014-01-29 | 成都超纯应用材料有限责任公司 | Protection material for plasma spray header as well as preparation method and application method thereof |
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| CN102822113A (en) * | 2010-05-20 | 2012-12-12 | 达泰豪化学工业株式会社 | Sintered magnesium oxide material, and process for production thereof |
| CN103415486A (en) * | 2011-03-24 | 2013-11-27 | 达泰豪化学工业株式会社 | Process for producing sintered magnesium oxide material |
| CN103236387A (en) * | 2013-04-16 | 2013-08-07 | 四川虹欧显示器件有限公司 | Gas discharge compound dielectric protective layer and plasma display panel comprising same |
| CN103539433A (en) * | 2013-09-30 | 2014-01-29 | 成都超纯应用材料有限责任公司 | Protection material for plasma spray header as well as preparation method and application method thereof |
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| JP2016132690A (en) * | 2015-01-16 | 2016-07-25 | スタンレー電気株式会社 | Ultraviolet light source |
| CN112945999A (en) * | 2020-12-30 | 2021-06-11 | 广东电网有限责任公司电力科学研究院 | Secondary electron emission coefficient calculation method and computer terminal equipment |
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