CN103909265A - Molybdenum-tungsten acid scandium composite material and preparation method thereof - Google Patents
Molybdenum-tungsten acid scandium composite material and preparation method thereof Download PDFInfo
- Publication number
- CN103909265A CN103909265A CN201410148317.XA CN201410148317A CN103909265A CN 103909265 A CN103909265 A CN 103909265A CN 201410148317 A CN201410148317 A CN 201410148317A CN 103909265 A CN103909265 A CN 103909265A
- Authority
- CN
- China
- Prior art keywords
- molybdenum
- wolframic acid
- acid scandium
- iron
- composite
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Powder Metallurgy (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Abstract
The invention belongs to the technical field of composite material preparation, and particularly relates to a molybdenum-tungsten acid scandium composite material and a preparation method thereof. The molybdenum-tungsten acid scandium composite material is made of tungsten acid scandium, iron and molybdenum. The preparation method includes 1, weighing raw materials; 2, dispersing the raw materials in step 1 in a dispersant, drying under a vacuum condition, and ball-milling slurry after drying to break the slurry by grinding to obtain mixed powder; 3, sintering the mixed powder to obtain the molybdenum-tungsten acid scandium composite material. The molybdenum-tungsten acid scandium composite material prepared by the method is 300-400MPa in tensile strength at room temperature, 120-160MPa in tensile strength at 600 DEG C, -1x10-6K-1-0.3x10-6K-1 in thermal expansion coefficient at 25-600 DEG C, and smaller than or equal to 100GPa in modulus of elasticity.
Description
Technical field
The invention belongs to technical field of composite materials, be specifically related to a kind of composite and preparation method thereof.
Background technology
Material is because the anharmonic vibration effect of lattice thermal vibration produces " expanding with heat and contract with cold ".But some material but in contrast, they shrink and expand when cooling in the time of heating, have " negative expansion " (Negative Thermal Expansion is called for short NTE) effect, and we claim that this type of material is negative thermal expansion material or heat-induced shrinkage material.Wolframic acid scandium reveals negative expansion behavior 1200 ℃ of following tables.
The high negative expansion character of wolframic acid scandium importance major embodiment technically for the excellent properties of controlling the coefficient of expansion of high expanding material and don't destroying high expanding material provides may; Provide rare room temperature so that the heat-induced shrinkage compound of nearly room temperature has been filled up the blank of heat-induced shrinkage compound between room-temperature zone.Therefore the research of wolframic acid scandium receives the concern of scientific circles and industrial quarters, tool researching value and application prospect.And existing wolframic acid scandium metal-base composites mainly at room temperature uses, in hot environment, easily expand, intensity difference, cannot realize in hot environment and normally using.
Summary of the invention
The object of the invention is easily to expand in hot environment in order to solve existing wolframic acid scandium metal-base composites, the technical problem of intensity difference, provides a kind of molybdenum-wolframic acid scandium composite and preparation method thereof.
Molybdenum-wolframic acid scandium composite is made up of 35%～75% wolframic acid scandium, 1%～10% iron and 20%～60% molybdenum by quality percentage composition; The quality purity of described wolframic acid scandium is not less than 98%, and the quality purity of iron is not less than 99%.
The preparation method of molybdenum-wolframic acid scandium composite carries out according to following steps:
One, take 35%～75% wolframic acid scandium, 1%～10% iron and 20%～60% molybdenum by quality percentage composition; The quality purity of described wolframic acid scandium is not less than 98%, and the quality purity of iron is not less than 99%;
Two, the raw material of step 1 is dispersed in dispersant, the consumption of dispersant is 1～2 times of raw material cumulative volume, obtains slurry, and described slurry is dried under vacuum condition, then the slurry ball milling after drying is ground, and obtains mixed powder;
Three, be heat preservation sintering 1h～3h under 1200 ℃～1250 ℃, the pressure condition that is 30MPa～60MPa by mixed powder in temperature, obtain molybdenum-wolframic acid scandium composite.
The present invention has the following advantages:
1, the present invention is by being incorporated into iron powder in molybdenum-wolframic acid scandium composite system, to improve the elevated temperature strength of material, and utilize mechanical alloying to reduce the sintering temperature of molybdenum-wolframic acid scandium composite, can reach at a lower temperature the object of molybdenum and wolframic acid scandium bonding, can avoid separating between ceramic phase and matrix, thereby prepare high temperature resistant molybdenum-wolframic acid scandium composite of function admirable.
The room temperature tensile strength of molybdenum-wolframic acid scandium composite that 2, prepared by the present invention is 300MPa～400MPa, and 600 ℃ of tensile strength are 120MPa～160MPa, and 25 ℃～600 ℃ thermal coefficient of expansions are-1 × 10
-6k
-1～0.3 × 10
-6k
-1, elastic modelling quantity≤100GPa.
The specific embodiment
Technical solution of the present invention is not limited to the following cited specific embodiment, also comprises any combination between each specific embodiment.
The specific embodiment one: in present embodiment, molybdenum-wolframic acid scandium composite is made up of 35%～75% wolframic acid scandium, 1%～10% iron and 20%～60% molybdenum by quality percentage composition; The quality purity of described wolframic acid scandium is not less than 98%, and the quality purity of iron is not less than 99%.
The specific embodiment two: what present embodiment was different from the specific embodiment one is that molybdenum-wolframic acid scandium composite is made up of 40%～70% wolframic acid scandium, 3%～7% iron and 25%～55% molybdenum by quality percentage composition.Other is identical with the specific embodiment one.
The specific embodiment three: what present embodiment was different from one of specific embodiment one or two is that molybdenum-wolframic acid scandium composite is made up of 60% wolframic acid scandium, 5% iron and 35% molybdenum by quality percentage composition.Other is identical with one of specific embodiment one or two.
The specific embodiment four: what present embodiment was different from one of specific embodiment one to three is that described wolframic acid scandium is the wolframic acid scandium powder that particle diameter is not more than 3 μ m, and iron is the iron powder that particle diameter is not more than 10 μ m, and molybdenum is the molybdenum powder that particle diameter is not more than 3 μ m.。Other is identical with one of specific embodiment one to three.
The specific embodiment five: the preparation method of present embodiment molybdenum-wolframic acid scandium composite carries out according to following steps:
One, take 35%～75% wolframic acid scandium, 1%～10% iron and 20%～60% molybdenum by quality percentage composition; The quality purity of described wolframic acid scandium is not less than 98%, and the quality purity of iron is not less than 99%;
Two, the raw material of step 1 is dispersed in dispersant, the consumption of dispersant is 1～2 times of raw material cumulative volume, obtains slurry, and described slurry is dried under vacuum condition, then the slurry ball milling after drying is ground, and obtains mixed powder;
Three, be heat preservation sintering 1h～3h under 1200 ℃～1250 ℃, the pressure condition that is 30MPa～60MPa by mixed powder in temperature, obtain molybdenum-wolframic acid scandium composite.
The room temperature tensile strength of molybdenum-wolframic acid scandium composite prepared by present embodiment is 300MPa～400MPa, and 600 ℃ of tensile strength are 120MPa～160MPa, and 25 ℃～600 ℃ thermal coefficient of expansions are-1 × 10
-6k
-1～0.3 × 10
-6k
-1, elastic modelling quantity≤100GPa.
The specific embodiment six: what present embodiment was different from the specific embodiment five is that the dispersant described in step 2 is absolute ethyl alcohol.Other is identical with the specific embodiment five.
The specific embodiment seven: what present embodiment was different from the specific embodiment five or six is that ball milling described in step 2 adopts planetary ball mill, and planetary ball mill rotating speed is 220rpm～400rpm, and ratio of grinding media to material is 5～8: 1, and Ball-milling Time is 20h～24h.Other is identical with the specific embodiment five or six.
The specific embodiment eight: what present embodiment was different from one of specific embodiment five to seven is that described in step 2, vacuum is not more than 1 × 10
-2pa.Other is identical with one of specific embodiment five to seven.
The specific embodiment nine: 80 ℃～90 ℃ of the temperature that what present embodiment was different from one of specific embodiment five to eight is dries described in step 2.Other is identical with one of specific embodiment five to eight.
The specific embodiment ten: what present embodiment was different from one of specific embodiment five to nine is in step 3 in temperature is heat preservation sintering 2h under 1230 ℃, the pressure condition that is 50MPa.Other is identical with one of specific embodiment five to nine.
Adopt following experimental verification effect of the present invention:
Experiment one:
The preparation method of molybdenum-wolframic acid scandium composite carries out according to following steps:
One, take 60% wolframic acid scandium, 5% iron and 35% molybdenum by quality percentage composition; The quality purity of described wolframic acid scandium is not less than 98%, and the quality purity of iron is not less than 99%;
Two, the raw material of step 1 is dispersed in absolute ethyl alcohol, the consumption of dispersant is 1 times of raw material cumulative volume, obtains slurry, and described slurry is dried under 80 ℃ of vacuum conditions, then the slurry ball milling after drying is ground, and obtains mixed powder;
Three, be 1 × 10 by mixed powder in vacuum
-2pa, temperature are heat preservation sintering 3h under 1200 ℃, the pressure condition that is 30MPa, obtain molybdenum-wolframic acid scandium composite.
Described wolframic acid scandium is the wolframic acid scandium powder that particle diameter is not more than 3 μ m, and iron is the iron powder that particle diameter is not more than 10 μ m, and molybdenum is the molybdenum powder that particle diameter is not more than 3 μ m.
Ball milling described in step 2 adopts planetary ball mill, and planetary ball mill rotating speed is 400rpm, and ratio of grinding media to material is 5: 1, and Ball-milling Time is 20h.
Experiment two:
The preparation method of molybdenum-wolframic acid scandium composite carries out according to following steps:
One, take 35% wolframic acid scandium, 10% iron and 55% molybdenum by quality percentage composition; The quality purity of described wolframic acid scandium is not less than 98%, and the quality purity of iron is not less than 99%;
Two, the raw material of step 1 is dispersed in absolute ethyl alcohol, the consumption of dispersant is 1 times of raw material cumulative volume, obtains slurry, and described slurry is dried under 80 ℃ of vacuum conditions, then the slurry ball milling after drying is ground, and obtains mixed powder;
Three, be 1 × 10 by mixed powder in vacuum
-2pa, temperature are heat preservation sintering 3h under 1200 ℃, the pressure condition that is 30MPa, obtain molybdenum-wolframic acid scandium composite.
Described wolframic acid scandium is the wolframic acid scandium powder that particle diameter is not more than 3 μ m, and iron is the iron powder that particle diameter is not more than 10 μ m, and molybdenum is the molybdenum powder that particle diameter is not more than 3 μ m.
Ball milling described in step 2 adopts planetary ball mill, and planetary ball mill rotating speed is 400rpm, and ratio of grinding media to material is 5: 1, and Ball-milling Time is 20h.
Experiment three:
The preparation method of molybdenum-wolframic acid scandium composite carries out according to following steps:
One, take 75% wolframic acid scandium, 1% iron and 24% molybdenum by quality percentage composition; The quality purity of described wolframic acid scandium is not less than 98%, and the quality purity of iron is not less than 99%;
Two, the raw material of step 1 is dispersed in absolute ethyl alcohol, the consumption of dispersant is 1 times of raw material cumulative volume, obtains slurry, and described slurry is dried under 80 ℃ of vacuum conditions, then the slurry ball milling after drying is ground, and obtains mixed powder;
Three, be 1 × 10 by mixed powder in vacuum
-2pa, temperature are heat preservation sintering 3h under 1200 ℃, the pressure condition that is 30MPa, obtain molybdenum-wolframic acid scandium composite.
Described wolframic acid scandium is the wolframic acid scandium powder that particle diameter is not more than 3 μ m, and iron is the iron powder that particle diameter is not more than 10 μ m, and molybdenum is the molybdenum powder that particle diameter is not more than 3 μ m.
Ball milling described in step 2 adopts planetary ball mill, and planetary ball mill rotating speed is 400rpm, and ratio of grinding media to material is 5: 1, and Ball-milling Time is 20h.
Experiment four:
The preparation method of molybdenum-wolframic acid scandium composite carries out according to following steps:
One, take 35% wolframic acid scandium, 5% iron and 60% molybdenum by quality percentage composition; The quality purity of described wolframic acid scandium is not less than 98%, and the quality purity of iron is not less than 99%;
Two, the raw material of step 1 is dispersed in absolute ethyl alcohol, the consumption of dispersant is 2 times of raw material cumulative volume, obtains slurry, and described slurry is dried under 90 ℃ of vacuum conditions, then the slurry ball milling after drying is ground, and obtains mixed powder;
Three, be 1 × 10 by mixed powder in vacuum
-3pa, temperature are heat preservation sintering 1h under 1250 ℃, the pressure condition that is 60MPa, obtain molybdenum-wolframic acid scandium composite.
Described wolframic acid scandium is the wolframic acid scandium powder that particle diameter is not more than 3 μ m, and iron is the iron powder that particle diameter is not more than 10 μ m, and molybdenum is the molybdenum powder that particle diameter is not more than 3 μ m.
Ball milling described in step 2 adopts planetary ball mill, and planetary ball mill rotating speed is 220rpm, and ratio of grinding media to material is 8: 1, and Ball-milling Time is 24h.
Experiment five:
The preparation method of molybdenum-wolframic acid scandium composite carries out according to following steps:
One, take 70% wolframic acid scandium, 10% iron and 20% molybdenum by quality percentage composition; The quality purity of described wolframic acid scandium is not less than 98%, and the quality purity of iron is not less than 99%;
Two, the raw material of step 1 is dispersed in absolute ethyl alcohol, the consumption of dispersant is 2 times of raw material cumulative volume, obtains slurry, and described slurry is dried under 90 ℃ of vacuum conditions, then the slurry ball milling after drying is ground, and obtains mixed powder;
Three, be 1 × 10 by mixed powder in vacuum
-3pa, temperature are heat preservation sintering 1h under 1250 ℃, the pressure condition that is 60MPa, obtain molybdenum-wolframic acid scandium composite.
Described wolframic acid scandium is the wolframic acid scandium powder that particle diameter is not more than 3 μ m, and iron is the iron powder that particle diameter is not more than 10 μ m, and molybdenum is the molybdenum powder that particle diameter is not more than 3 μ m.
Ball milling described in step 2 adopts planetary ball mill, and planetary ball mill rotating speed is 220rpm, and ratio of grinding media to material is 8: 1, and Ball-milling Time is 24h.
Experiment six:
The preparation method of molybdenum-wolframic acid scandium composite carries out according to following steps:
One, take 40% wolframic acid scandium, 5% iron and 55% molybdenum by quality percentage composition; The quality purity of described wolframic acid scandium is not less than 98%, and the quality purity of iron is not less than 99%;
Two, the raw material of step 1 is dispersed in absolute ethyl alcohol, the consumption of dispersant is 2 times of raw material cumulative volume, obtains slurry, and described slurry is dried under 90 ℃ of vacuum conditions, then the slurry ball milling after drying is ground, and obtains mixed powder;
Three, be 1 × 10 by mixed powder in vacuum
-3pa, temperature are heat preservation sintering 1h under 1250 ℃, the pressure condition that is 60MPa, obtain molybdenum-wolframic acid scandium composite.
Described wolframic acid scandium is the wolframic acid scandium powder that particle diameter is not more than 3 μ m, and iron is the iron powder that particle diameter is not more than 10 μ m, and molybdenum is the molybdenum powder that particle diameter is not more than 3 μ m.
Ball milling described in step 2 adopts planetary ball mill, and planetary ball mill rotating speed is 220rpm, and ratio of grinding media to material is 8: 1, and Ball-milling Time is 24h.
Experiment seven:
The preparation method of molybdenum-wolframic acid scandium composite carries out according to following steps:
One, take 70% wolframic acid scandium, 3% iron and 27% molybdenum by quality percentage composition; The quality purity of described wolframic acid scandium is not less than 98%, and the quality purity of iron is not less than 99%;
Two, the raw material of step 1 is dispersed in absolute ethyl alcohol, the consumption of dispersant is 1～2 times of raw material cumulative volume, obtains slurry, by the 85 ℃ of oven dry under vacuum condition of described slurry, then the slurry ball milling after drying is ground, and obtains mixed powder;
Three, be 1 × 10 by mixed powder in vacuum
-2pa, temperature are heat preservation sintering 2h under 1220 ℃, the pressure condition that is 50MPa, obtain molybdenum-wolframic acid scandium composite.
Described wolframic acid scandium is the wolframic acid scandium powder that particle diameter is not more than 3 μ m, and iron is the iron powder that particle diameter is not more than 10 μ m, and molybdenum is the molybdenum powder that particle diameter is not more than 3 μ m.
Ball milling described in step 2 adopts planetary ball mill, and planetary ball mill rotating speed is 300rpm, and ratio of grinding media to material is 7: 1, and Ball-milling Time is 22h.
Experiment eight:
The preparation method of molybdenum-wolframic acid scandium composite carries out according to following steps:
One, take 68% wolframic acid scandium, 7% iron and 25% molybdenum by quality percentage composition; The quality purity of described wolframic acid scandium is not less than 98%, and the quality purity of iron is not less than 99%;
Two, the raw material of step 1 is dispersed in absolute ethyl alcohol, the consumption of dispersant is 1～2 times of raw material cumulative volume, obtains slurry, by the 85 ℃ of oven dry under vacuum condition of described slurry, then the slurry ball milling after drying is ground, and obtains mixed powder;
Three, be 1 × 10 by mixed powder in vacuum
-2pa, temperature are heat preservation sintering 2h under 1220 ℃, the pressure condition that is 50MPa, obtain molybdenum-wolframic acid scandium composite.
Described wolframic acid scandium is the wolframic acid scandium powder that particle diameter is not more than 3 μ m, and iron is the iron powder that particle diameter is not more than 10 μ m, and molybdenum is the molybdenum powder that particle diameter is not more than 3 μ m.
Ball milling described in step 2 adopts planetary ball mill, and planetary ball mill rotating speed is 300rpm, and ratio of grinding media to material is 7: 1, and Ball-milling Time is 22h.
Experiment nine:
The preparation method of molybdenum-wolframic acid scandium composite carries out according to following steps:
One, take 65% wolframic acid scandium, 6% iron and 29% molybdenum by quality percentage composition; The quality purity of described wolframic acid scandium is not less than 98%, and the quality purity of iron is not less than 99%;
Two, the raw material of step 1 is dispersed in absolute ethyl alcohol, the consumption of dispersant is 1～2 times of raw material cumulative volume, obtains slurry, by the 85 ℃ of oven dry under vacuum condition of described slurry, then the slurry ball milling after drying is ground, and obtains mixed powder;
Three, be 1 × 10 by mixed powder in vacuum
-2pa, temperature are heat preservation sintering 2h under 1220 ℃, the pressure condition that is 50MPa, obtain molybdenum-wolframic acid scandium composite.
Described wolframic acid scandium is the wolframic acid scandium powder that particle diameter is not more than 3 μ m, and iron is the iron powder that particle diameter is not more than 10 μ m, and molybdenum is the molybdenum powder that particle diameter is not more than 3 μ m.
Ball milling described in step 2 adopts planetary ball mill, and planetary ball mill rotating speed is 300rpm, and ratio of grinding media to material is 7: 1, and Ball-milling Time is 22h.
The performance test results of molybdenum-wolframic acid scandium composite prepared by experiment one to experiment nine is in table 1.
Cut into tensile sample and the Φ 3mm × 20mm thermal coefficient of expansion sample that gauge length is 40mm to testing one to experiment molybdenum-wolframic acid scandium composite of nine, and specimen surface is carried out to polishing, then the sample after polishing is carried out to mechanical property and thermal coefficient of expansion test, its test result sees the following form:
Table 1 is tested the performance test results of a molybdenum-wolframic acid scandium composite to experiment nine
Claims (10)
1. molybdenum-wolframic acid scandium composite, is characterized in that molybdenum-wolframic acid scandium composite is made up of 35%～75% wolframic acid scandium, 1%～10% iron and 20%～60% molybdenum by quality percentage composition; The quality purity of described wolframic acid scandium is not less than 98%, and the quality purity of iron is not less than 99%.
2. molybdenum-wolframic acid scandium composite according to claim 1, is characterized in that molybdenum-wolframic acid scandium composite is made up of 40%～70% wolframic acid scandium, 3%～7% iron and 25%～55% molybdenum by quality percentage composition.
3. molybdenum-wolframic acid scandium composite according to claim 1, is characterized in that molybdenum-wolframic acid scandium composite is made up of 60% wolframic acid scandium, 5% iron and 35% molybdenum by quality percentage composition.
4. according to molybdenum-wolframic acid scandium composite described in claim 1,2 or 3, it is characterized in that described wolframic acid scandium is the wolframic acid scandium powder that particle diameter is not more than 3 μ m, iron is the iron powder that particle diameter is not more than 10 μ m, and molybdenum is the molybdenum powder that particle diameter is not more than 3 μ m.
5. the preparation method of molybdenum-wolframic acid scandium composite described in claim 1, is characterized in that the preparation method of molybdenum-wolframic acid scandium composite carries out according to following steps:
One, take 35%～75% wolframic acid scandium, 1%～10% iron and 20%～60% molybdenum by quality percentage composition; The quality purity of described wolframic acid scandium is not less than 98%, and the quality purity of iron is not less than 99%;
Two, the raw material of step 1 is dispersed in dispersant, the consumption of dispersant is 1～2 times of raw material cumulative volume, obtains slurry, and described slurry is dried under vacuum condition, then the slurry ball milling after drying is ground, and obtains mixed powder;
Three, be heat preservation sintering 1h～3h under 1200 ℃～1250 ℃, the pressure condition that is 30MPa～60MPa by mixed powder in temperature, obtain molybdenum-wolframic acid scandium composite.
6. the preparation method of molybdenum-wolframic acid scandium composite according to claim 5, is characterized in that the dispersant described in step 2 is absolute ethyl alcohol.
7. according to the preparation method of molybdenum-wolframic acid scandium composite described in claim 5 or 6, it is characterized in that ball milling described in step 2 adopts planetary ball mill, planetary ball mill rotating speed is 220rpm～400rpm, and ratio of grinding media to material is 5～8: 1, and Ball-milling Time is 20h～24h.
8. according to the preparation method of molybdenum-wolframic acid scandium composite described in claim 5 or 6, it is characterized in that described in step 2, vacuum is not more than 1 × 10
-2pa.
9. according to the preparation method of molybdenum-wolframic acid scandium composite described in claim 5 or 6, it is characterized in that 80 ℃～90 ℃ of the temperature of drying described in step 2.
10. according to the preparation method of molybdenum-wolframic acid scandium composite described in claim 5 or 6, it is characterized in that in step 3 that in temperature be heat preservation sintering 2h under 1230 ℃, the pressure condition that is 50MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410148317.XA CN103909265B (en) | 2014-04-14 | 2014-04-14 | Molybdenum-tungsten acid scandium composite material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410148317.XA CN103909265B (en) | 2014-04-14 | 2014-04-14 | Molybdenum-tungsten acid scandium composite material and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103909265A true CN103909265A (en) | 2014-07-09 |
| CN103909265B CN103909265B (en) | 2017-02-15 |
Family
ID=51035440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410148317.XA Active CN103909265B (en) | 2014-04-14 | 2014-04-14 | Molybdenum-tungsten acid scandium composite material and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103909265B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6183716B1 (en) * | 1997-07-30 | 2001-02-06 | State Of Oregon Acting By And Through The State Board Of Higher Education Of Behalf Of Oregon State University | Solution method for making molybdate and tungstate negative thermal expansion materials and compounds made by the method |
| CN1891664A (en) * | 2006-03-08 | 2007-01-10 | 江苏大学 | Method for preparing ZrW2O8/Al2O3 nano composite material |
| CN101456591A (en) * | 2007-12-10 | 2009-06-17 | 深圳大学 | High purity and negative heat expansion rare-earth tungstate material and preparation thereof |
| CN102492885A (en) * | 2011-12-03 | 2012-06-13 | 西北有色金属研究院 | Niobium-zirconium tungstate composite material and preparation method thereof |
-
2014
- 2014-04-14 CN CN201410148317.XA patent/CN103909265B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6183716B1 (en) * | 1997-07-30 | 2001-02-06 | State Of Oregon Acting By And Through The State Board Of Higher Education Of Behalf Of Oregon State University | Solution method for making molybdate and tungstate negative thermal expansion materials and compounds made by the method |
| CN1891664A (en) * | 2006-03-08 | 2007-01-10 | 江苏大学 | Method for preparing ZrW2O8/Al2O3 nano composite material |
| CN101456591A (en) * | 2007-12-10 | 2009-06-17 | 深圳大学 | High purity and negative heat expansion rare-earth tungstate material and preparation thereof |
| CN102492885A (en) * | 2011-12-03 | 2012-06-13 | 西北有色金属研究院 | Niobium-zirconium tungstate composite material and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103909265B (en) | 2017-02-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106915961B (en) | Graphene-zirconia composite material and preparation method thereof | |
| Vafa et al. | Reactive hot pressing of ZrB2-based composites with changes in ZrO2/SiC ratio and sintering conditions. Part I: densification behavior | |
| CN106756195B (en) | A kind of graphene enhancing Cu-base composites and its preparation method and application | |
| CN106735249B (en) | A kind of niobium based composites and preparation method | |
| CN101913876B (en) | Method for preparing zirconium boride-tungsten titanium carbide self-lubricating composite ceramic material | |
| Feng et al. | Planetary ball‐milling of AlON powder for highly transparent ceramics | |
| Yang et al. | Flash Sintering of dense alumina ceramic discs with high hardness | |
| CN104402480A (en) | Aluminum nitride ceramic composite material and preparation method thereof | |
| CN107857592A (en) | A kind of high-compactness superhigh temperature Ta4HfC5The preparation method of ceramic bulk material | |
| CN104404404A (en) | Preparation method of copper-based composite material and copper-based composite material | |
| CN104108937A (en) | Zirconium carbide ceramic heating unit and preparation method thereof | |
| Huang et al. | AlON phase formation in hot-pressing sintering Al2O3/AlN composites and their oxidation behavior | |
| Krasil’nikov et al. | Investigation of the structure of Si 3 N 4-based ceramic with Al 2 O 3 and Y 2 O 3 additives | |
| Zhang et al. | Strengthening of porous TiB2⿿ SiC ceramics by pre-oxidation and crack-healing | |
| CN103820691A (en) | Preparation method for sintering FeAl/TiC composite material under normal pressure | |
| Zhong et al. | Binding natural graphite with mesophase pitch: A promising route to future carbon blocks | |
| Toksoy et al. | Densification and characterization of rapid carbothermal synthesized boron carbide | |
| CN102492885B (en) | Niobium-zirconium tungstate composite material and preparation method thereof | |
| CN103981384B (en) | A kind of preparation method of tungsten-aluminium nitride-hafnium boride matrix material | |
| Xiong et al. | Preparation of graded silicon nitride ceramics with high mechanical performance using β-Si3N4 seeds | |
| Liu et al. | High-temperature compressive properties of TiC–TiB 2/Cu composites prepared by self-propagating high-temperature synthesis | |
| CN103909265A (en) | Molybdenum-tungsten acid scandium composite material and preparation method thereof | |
| CN104402450A (en) | Method for quickly preparing Ti2AlN ceramic powder on the basis of thermal explosion reaction at low temperature | |
| Ni et al. | RETRACTED: Effect of sintering time on the bending strength and CTE of SiC/Al–35Si composite | |
| CN105036720B (en) | A kind of preparation method by the use of boride as additive mullite synthesizing whisker |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Han Wenbo Inventor after: Zhang Xinghong Inventor after: Du Hongju Inventor after: Xue Zhonggang Inventor after: Wang Peng Inventor after: Zhao Guangdong Inventor after: Cheng Yehong Inventor after: Zhou Changling Inventor before: Han Wenbo Inventor before: Zhang Xinghong Inventor before: Wang Peng Inventor before: Zhao Guangdong Inventor before: Zhang Zhaoting Inventor before: Cheng Yehong Inventor before: Zhou Changling |
|
| COR | Change of bibliographic data | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |