CN105198480A - Preparation method of molybdenum disilicide/silicon carbide composite porous ceramic - Google Patents
Preparation method of molybdenum disilicide/silicon carbide composite porous ceramic Download PDFInfo
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Abstract
The invention relates to a preparation method of molybdenum disilicide/silicon carbide composite porous ceramic. The method comprises the following steps: carrying out compression molding on Mo, Si, C, SiC and B, adjusting the vacuum degree, carrying out Si melt infiltration, and sintering to obtain the MoSi2/SiC composite porous ceramic. The porosity of the obtained material is 50% or above. The method supplements the kind of present porous materials, the composite porous ceramic obtained in the invention has higher use temperature than present porous ceramics in anti-oxidation performance environment, and the method also has the advantages of simple technology and scale production.
Description
Technical field
The present invention relates to MoSi
2the technology of preparing of/SiC composite porous ceramic, belongs to the preparing technical field of novel porous pottery.
Background technology
The fusing point of material, proportion and high-temperature oxidation resistance are three the topmost parameters selecting aviation high-temperature structural material.Pyroceramic is widely used in Aeronautics and Astronautics, metallurgy and field of traffic.High temperature porous pottery is at present with SiC and Si
3n
4etc. for main.Due to intermetallic compound MoSi
2, there is high-melting-point (2030 ° of C), moderate density (6.24 × 10
3kg/m
3), good thermal conductivity and electroconductibility and in all metal silicides, there is excellent high-temperature oxidation resistance and become the material being hopeful most to meet this requirement.SiC has very high hot strength and resistance of oxidation, and and MoSi
2have good chemical compatibility and thermodynamic stability, thus SiC strengthens MoSi
2the obdurability of matrix material can be improved largely.Thus this matrix material has higher obdurability, especially MoSi
2/ SiC composite ceramics, has higher use temperature and better antioxidant property, light weight and mechanical property is good.Due to its above characteristic, MoSi
2/ SiC composite porous ceramic will have more wide high-temperature oxidation environment using value.
Summary of the invention
The object of the invention is to utilize reaction sintering and infiltration technique to combine to prepare porous MoSi
2/ SiC composite ceramics.Fill up the field of existing high temperature porous pottery, supplement the deficiency of existing high temperature porous ceramic high temperature Application Areas.Utilize Mo, Si, C, SiC and the compression molding of B element powder, infiltration in vacuum Si sinters, and resulting materials porosity is stable remains on 50% or more.
Technical scheme of the present invention is: the preparation method of a kind of molybdenum disilicide/silicon carbide compound porous ceramics, and its step is as follows:
(1) by Mo powder, Si powder, C powder, SiC powder and B powder ball mill mixing, the weight ratio of described Mo powder, Si powder, C powder, SiC powder and B powder is 50-80:20-35:1-10:1-30:1-5, mixing time is 12-72hr, add the binding agent of Mo powder, Si powder, C powder, SiC powder and B powder gross weight 5-17%, and compression molding, obtain blank;
(2) blank room temperature is dried, then enter oven for drying 1-72hr;
(3) the blank immigration after oven dry is covered with in the vacuum sintering furnace of the metal Si powder of Mo powder, Si powder, C powder, SiC powder and B powder gross weight 2-20%, keeps vacuum tightness 10
-2-10
-3pa, temperature rise rate is 2-6 DEG C/min;
(4) at 1100-1480 DEG C of insulation 10-60min, and vacuum tightness>=10 are reduced
-1pa keeps; Be warming up to 1500-1650 DEG C of insulation 10-60min, and reduce vacuum tightness>=10
-1pa keeps; Be warming up to 1650-1700 DEG C of insulation 10-40min, gas clean-up≤10
-2pa keeps, and obtains MoSi after cooling
2/ SiC composite porous ceramic.
A preparation method for molybdenum disilicide/silicon carbide compound porous ceramics, its step is as follows:
(1) by Mo powder, Si powder and C powder ball mill mixing, the weight ratio of described Mo powder, Si powder, C powder is 50-80:20-35:1-10, and mixing time is 12-72hr, adds the binding agent of Mo powder, Si powder, C powder gross weight 5-17%, and compression molding, obtain blank;
(2) blank room temperature is dried, then enter oven for drying 1-72hr;
(3) by dry after blank move into be covered with Mo powder, Si powder, C powder gross weight 2-20% metal Si powder vacuum sintering furnace in, keep vacuum tightness 10
-2-10
-3pa, temperature rise rate is 2-6 DEG C/min;
(4) at 1100-1480 DEG C of insulation 10-60min, and vacuum tightness>=10 are reduced
-1pa keeps; Be warming up to 1500-1650 DEG C of insulation 10-60min, and reduce vacuum tightness>=10
-1pa keeps; Be warming up to 1650-1700 DEG C of insulation 10-40min, gas clean-up≤10
-2pa keeps, and obtains MoSi after cooling
2/ SiC composite porous ceramic.
A preparation method for molybdenum disilicide/silicon carbide compound porous ceramics, its step is as follows:
(1) by Mo powder, Si powder, C powder, SiC powder ball mill mixing, the weight ratio of described Mo powder, Si powder, C powder, SiC powder is 50-80:20-35:1-10:1-30, mixing time is 12-72hr, add the binding agent of Mo powder, Si powder, C powder, SiC powder gross weight 5-17%, and compression molding, obtain blank;
(2) blank room temperature is dried, then enter oven for drying 1-72hr;
(3) by dry after blank move into be covered with Mo powder, Si powder, C powder, SiC powder gross weight 2-20% metal Si powder vacuum sintering furnace in, keep vacuum tightness 10
-2-10
-3pa, temperature rise rate is 2-6 DEG C/min;
(4) at 1100-1480 DEG C of insulation 10-60min, and vacuum tightness>=10 are reduced
-1pa keeps; Be warming up to 1500-1650 DEG C of insulation 10-60min, and reduce vacuum tightness>=10
-1pa keeps; Be warming up to 1650-1700 DEG C of insulation 10-40min, gas clean-up≤10
-2pa keeps, and obtains MoSi after cooling
2/ SiC composite porous ceramic.
A preparation method for molybdenum disilicide/silicon carbide compound porous ceramics, its step is as follows:
(1) by Mo powder, Si powder, C powder and B powder ball mill mixing, the weight ratio of described Mo powder, Si powder, C powder and B powder is 50-80:20-35:1-10:1-5, and mixing time is 12-72hr, adds the binding agent of Mo powder, Si powder, C powder and B powder gross weight 5-17%, and compression molding, obtain blank;
(2) blank room temperature is dried, then enter oven for drying 1-72hr;
(3) the blank immigration after oven dry is covered with in the vacuum sintering furnace of the metal Si powder of Mo powder, Si powder, C powder and B powder gross weight 2-20%, keeps vacuum tightness 10
-2-10
-3pa, temperature rise rate is 2-6 DEG C/min;
(4) at 1100-1480 DEG C of insulation 10-60min, and vacuum tightness>=10 are reduced
-1pa keeps; Be warming up to 1500-1650 DEG C of insulation 10-60min, and reduce vacuum tightness>=10
-1pa keeps; Be warming up to 1650-1700 DEG C of insulation 10-40min, gas clean-up≤10
-2pa keeps, and obtains MoSi after cooling
2/ SiC composite porous ceramic.
The invention has the beneficial effects as follows: the present invention is by adjustment forming pressure and the sustainable adjustment porosity of element powders granularity.Utilize Mo, Si, C, SiC and the compression molding of B element powder, by adjustment vacuum tightness and infiltration Si sinter, obtain MoSi
2/ SiC composite porous ceramic, resulting materials porosity is stable remains on 50% or more.The method gained composite porous ceramic pore dimension can be undertaken regulating and controlling, is applicable to technical scale by adjustment mixed powder granularity.
Embodiment
The concrete grammar of the preparation of molybdenum disilicide/silicon carbide compound porous ceramics is as follows:
(1) by Mo, Si, C, SiC and B element powder ball mill mixing, binding agent is added, and compression molding;
(2) above blank room temperature is dried, then enter oven for drying;
(3) above blank immigration is covered with in the vacuum sintering furnace of metal Si powder.Keep vacuum tightness 10
-2-10
-3about Pa.Temperature rise rate is 2-6 DEG C/min.Then at 1100-1480 DEG C of insulation 10-60min, and vacuum tightness maintenance is reduced; Be warming up to 1500-1650 DEG C of insulation 10-60min, and reduce vacuum tightness maintenance; Be warming up to 1650-1700 DEG C of insulation 10-40min, gas clean-up keeps.MoSi is obtained after cooling
2/ SiC composite porous ceramic.
Embodiment 1
Weigh Mo, Si, C, B powder 210g, 81g, 9g, 1.5g respectively in proportion, ball milling 24hr after Homogeneous phase mixing.Mix and compression molding after above powder being added the resol of 10%.Dry in 100 degree of baking ovens after drying in air.Move in the vacuum sintering furnace being covered with 21g metallic silicon power and sinter.Heat-up rate is 5 DEG C/min, and vacuum tightness is 10
-3about Pa.Be warming up to 1410-1450 DEG C, reducing vacuum tightness is 10
-1pa, insulation 30min; Be warming up to 1550 DEG C, insulation 30min, vacuum tightness is 10
-1pa.Be warming up to 1650 DEG C, insulation 10min, vacuum tightness is 10
-3pa.Then furnace cooling, cooling feeding.The composite porous ceramic porosity surveyed is 51%.
Embodiment 2
Weigh Mo, Si, C, SiC, B powder 184.8g, 71.28g, 7.92g, 30g, 6g respectively in proportion, ball milling 48hr after Homogeneous phase mixing.Mix and compression molding after above powder being added the resol of 11%.Dry in 100 degree of baking ovens after drying in air.Move in the vacuum sintering furnace being covered with 20g metallic silicon power and sinter.Heat-up rate is 5 DEG C/min, and vacuum tightness is 10
-3about Pa.Be warming up to 1410-1450 DEG C, reducing vacuum tightness is 10
-1pa, insulation 30min; Be warming up to 1550 DEG C, insulation 30min, vacuum tightness is 10
-1pa.Be warming up to 1650 DEG C, insulation 20min, vacuum tightness is 10
-3pa.Then furnace cooling, cooling feeding.The composite porous ceramic porosity surveyed is 52%.
Embodiment 3
Weigh Mo, Si, C powder 210g, 81g, 9g respectively in proportion, ball milling 48hr after Homogeneous phase mixing.Mix and compression molding after above powder being added the resol of 11%.Dry in 100 degree of baking ovens after drying in air.Move in the vacuum sintering furnace being covered with 22g metallic silicon power and sinter.Heat-up rate is 4 DEG C/min, and vacuum tightness is 10
-3about Pa.Be warming up to 1410-1450 DEG C, reducing vacuum tightness is 10
-1pa, insulation 30min; Be warming up to 1550 DEG C, insulation 30min, vacuum tightness is 10
-1pa.Be warming up to 1700 DEG C, insulation 10min, vacuum tightness is 10
-3pa.Then furnace cooling, cooling feeding.The composite porous ceramic porosity surveyed is 52%.
Embodiment 4
A preparation method for molybdenum disilicide/silicon carbide compound porous ceramics, is characterized in that, its step is as follows:
(1) by Mo powder, Si powder, C powder, SiC powder and B powder ball mill mixing, the weight ratio of described Mo powder, Si powder, C powder, SiC powder and B powder is 50:20:1:1:1, mixing time is 12hr, add the binding agent of Mo powder, Si powder, C powder, SiC powder and B powder gross weight 5%, and compression molding, obtain blank;
(2) blank room temperature is dried, then enter oven for drying 1hr;
(3) the blank immigration after oven dry is covered with in the vacuum sintering furnace of the metal Si powder of Mo powder, Si powder, C powder, SiC powder and B powder gross weight 2%, keeps vacuum tightness 10
-2pa, temperature rise rate is 2 DEG C/min;
(4) at 1100 DEG C of insulation 10min, and vacuum tightness>=10 are reduced
-1pa keeps; Be warming up to 1500 DEG C of insulation 10min, and reduce vacuum tightness>=10
-1pa keeps; Be warming up to 1650 DEG C of insulation 10min, gas clean-up≤10
-2pa keeps, and obtains MoSi after cooling
2/ SiC composite porous ceramic.
Embodiment 5
A preparation method for molybdenum disilicide/silicon carbide compound porous ceramics, is characterized in that, its step is as follows:
(1) by Mo powder, Si powder, C powder, SiC powder and B powder ball mill mixing, the weight ratio of described Mo powder, Si powder, C powder, SiC powder and B powder is 80:35:10:30:5, mixing time is 72hr, add the binding agent of Mo powder, Si powder, C powder, SiC powder and B powder gross weight 17%, and compression molding, obtain blank;
(2) blank room temperature is dried, then enter oven for drying 72hr;
(3) the blank immigration after oven dry is covered with in the vacuum sintering furnace of the metal Si powder of Mo powder, Si powder, C powder, SiC powder and B powder gross weight 20%, keeps vacuum tightness 10
-3pa, temperature rise rate is 6 DEG C/min;
(4) at 1480 DEG C of insulation 60min, and vacuum tightness>=10 are reduced
-1pa keeps; Be warming up to 1650 DEG C of insulation 60min, and reduce vacuum tightness>=10
-1pa keeps; Be warming up to 1700 DEG C of insulation 40min, gas clean-up≤10
-2pa keeps, and obtains MoSi after cooling
2/ SiC composite porous ceramic.
Embodiment 6
A preparation method for molybdenum disilicide/silicon carbide compound porous ceramics, is characterized in that, its step is as follows:
(1) by Mo powder, Si powder and C powder ball mill mixing, the weight ratio of described Mo powder, Si powder, C powder is 50:20:1, and mixing time is 12hr, adds the binding agent of Mo powder, Si powder, C powder gross weight 5%, and compression molding, obtain blank;
(2) blank room temperature is dried, then enter oven for drying 1hr;
(3) by dry after blank move into be covered with Mo powder, Si powder, C powder gross weight 2% metal Si powder vacuum sintering furnace in, keep vacuum tightness 10
-2pa, temperature rise rate is 2 DEG C/min;
(4) at 1100 DEG C of insulation 10min, and vacuum tightness>=10 are reduced
-1pa keeps; Be warming up to 1500 DEG C of insulation 10min, and reduce vacuum tightness>=10
-1pa keeps; Be warming up to 1650 DEG C of insulation 10min, gas clean-up≤10
-2pa keeps, and obtains MoSi after cooling
2/ SiC composite porous ceramic.
Embodiment 7
A preparation method for molybdenum disilicide/silicon carbide compound porous ceramics, is characterized in that, its step is as follows:
(1) by Mo powder, Si powder and C powder ball mill mixing, the weight ratio of described Mo powder, Si powder, C powder is 80:35:10, and mixing time is 72hr, adds the binding agent of Mo powder, Si powder, C powder gross weight 17%, and compression molding, obtain blank;
(2) blank room temperature is dried, then enter oven for drying 72hr;
(3) by dry after blank move into be covered with Mo powder, Si powder, C powder gross weight 20% metal Si powder vacuum sintering furnace in, keep vacuum tightness 10
-3pa, temperature rise rate is 6 DEG C/min;
(4) at 1480 DEG C of insulation 60min, and vacuum tightness>=10 are reduced
-1pa keeps; Be warming up to 1650 DEG C of insulation 60min, and reduce vacuum tightness>=10
-1pa keeps; Be warming up to 1700 DEG C of insulation 40min, gas clean-up≤10
-2pa keeps, and obtains MoSi after cooling
2/ SiC composite porous ceramic.
Embodiment 8
A preparation method for molybdenum disilicide/silicon carbide compound porous ceramics, is characterized in that, its step is as follows:
(1) by Mo powder, Si powder, C powder, SiC powder ball mill mixing, the weight ratio of described Mo powder, Si powder, C powder, SiC powder is 60:30:5:10, and mixing time is 24hr, adds the binding agent of Mo powder, Si powder, C powder, SiC powder gross weight 10%, and compression molding, obtain blank;
(2) blank room temperature is dried, then enter oven for drying 24hr;
(3) by dry after blank move into be covered with Mo powder, Si powder, C powder, SiC powder gross weight 10% metal Si powder vacuum sintering furnace in, keep vacuum tightness 10
-3pa, temperature rise rate is 4 DEG C/min;
(4) at 1200 DEG C of insulation 20min, and vacuum tightness>=10 are reduced
-1pa keeps; Be warming up to 1600 DEG C of insulation 50min, and reduce vacuum tightness>=10
-1pa keeps; Be warming up to 1650 DEG C of insulation 20min, gas clean-up≤10
-2pa keeps, and obtains MoSi after cooling
2/ SiC composite porous ceramic.
Embodiment 9
A preparation method for molybdenum disilicide/silicon carbide compound porous ceramics, is characterized in that, its step is as follows:
(1) by Mo powder, Si powder, C powder, SiC powder ball mill mixing, the weight ratio of described Mo powder, Si powder, C powder, SiC powder is 60:30:5:20, and mixing time is 30hr, adds the binding agent of Mo powder, Si powder, C powder, SiC powder gross weight 15%, and compression molding, obtain blank;
(2) blank room temperature is dried, then enter oven for drying 48hr;
(3) by dry after blank move into be covered with Mo powder, Si powder, C powder, SiC powder gross weight 10% metal Si powder vacuum sintering furnace in, keep vacuum tightness 10
-3pa, temperature rise rate is 4 DEG C/min;
(4) at 1400 DEG C of insulation 30min, and vacuum tightness>=10 are reduced
-1pa keeps; Be warming up to 1500 DEG C of insulation 50min, and reduce vacuum tightness>=10
-1pa keeps; Be warming up to 1700 DEG C of insulation 20min, gas clean-up≤10
-2pa keeps, and obtains MoSi after cooling
2/ SiC composite porous ceramic.
Embodiment 10
A preparation method for molybdenum disilicide/silicon carbide compound porous ceramics, is characterized in that, its step is as follows:
(1) by Mo powder, Si powder, C powder and B powder ball mill mixing, the weight ratio of described Mo powder, Si powder, C powder and B powder is 80:35:1:1, and mixing time is 48hr, adds the binding agent of Mo powder, Si powder, C powder and B powder gross weight 12%, and compression molding, obtain blank;
(2) blank room temperature is dried, then enter oven for drying 48hr;
(3) the blank immigration after oven dry is covered with in the vacuum sintering furnace of the metal Si powder of Mo powder, Si powder, C powder and B powder gross weight 15%, keeps vacuum tightness 10
-3pa, temperature rise rate is 4 DEG C/min;
(4) at 1200 DEG C of insulation 20min, and vacuum tightness>=10 are reduced
-1pa keeps; Be warming up to 1650 DEG C of insulation 50min, and reduce vacuum tightness>=10
-1pa keeps; Be warming up to 1650 DEG C of insulation 20min, gas clean-up≤10
-2pa keeps, and obtains MoSi after cooling
2/ SiC composite porous ceramic.
Claims (4)
1. a preparation method for molybdenum disilicide/silicon carbide compound porous ceramics, is characterized in that, its step is as follows:
(1) by Mo powder, Si powder, C powder, SiC powder and B powder ball mill mixing, the weight ratio of described Mo powder, Si powder, C powder, SiC powder and B powder is 50-80:20-35:1-10:1-30:1-5, mixing time is 12-72hr, add the binding agent of Mo powder, Si powder, C powder, SiC powder and B powder gross weight 5-17%, and compression molding, obtain blank;
(2) blank room temperature is dried, then enter oven for drying 1-72hr;
(3) the blank immigration after oven dry is covered with in the vacuum sintering furnace of the metal Si powder of Mo powder, Si powder, C powder, SiC powder and B powder gross weight 2-20%, keeps vacuum tightness 10
-2-10
-3pa, temperature rise rate is 2-6 DEG C/min;
(4) at 1100-1480 DEG C of insulation 10-60min, and vacuum tightness>=10 are reduced
-1pa keeps; Be warming up to 1500-1650 DEG C of insulation 10-60min, and reduce vacuum tightness>=10
-1pa keeps; Be warming up to 1650-1700 DEG C of insulation 10-40min, gas clean-up≤10
-2pa keeps, and obtains MoSi after cooling
2/ SiC composite porous ceramic.
2. a preparation method for molybdenum disilicide/silicon carbide compound porous ceramics, is characterized in that, its step is as follows:
(1) by Mo powder, Si powder and C powder ball mill mixing, the weight ratio of described Mo powder, Si powder, C powder is 50-80:20-35:1-10, and mixing time is 12-72hr, adds the binding agent of Mo powder, Si powder, C powder gross weight 5-17%, and compression molding, obtain blank;
(2) blank room temperature is dried, then enter oven for drying 1-72hr;
(3) by dry after blank move into be covered with Mo powder, Si powder, C powder gross weight 2-20% metal Si powder vacuum sintering furnace in, keep vacuum tightness 10
-2-10
-3pa, temperature rise rate is 2-6 DEG C/min;
(4) at 1100-1480 DEG C of insulation 10-60min, and vacuum tightness>=10 are reduced
-1pa keeps; Be warming up to 1500-1650 DEG C of insulation 10-60min, and reduce vacuum tightness>=10
-1pa keeps; Be warming up to 1650-1700 DEG C of insulation 10-40min, gas clean-up≤10
-2pa keeps, and obtains MoSi after cooling
2/ SiC composite porous ceramic.
3. a preparation method for molybdenum disilicide/silicon carbide compound porous ceramics, is characterized in that, its step is as follows:
(1) by Mo powder, Si powder, C powder, SiC powder ball mill mixing, the weight ratio of described Mo powder, Si powder, C powder, SiC powder is 50-80:20-35:1-10:1-30, mixing time is 12-72hr, add the binding agent of Mo powder, Si powder, C powder, SiC powder gross weight 5-17%, and compression molding, obtain blank;
(2) blank room temperature is dried, then enter oven for drying 1-72hr;
(3) by dry after blank move into be covered with Mo powder, Si powder, C powder, SiC powder gross weight 2-20% metal Si powder vacuum sintering furnace in, keep vacuum tightness 10
-2-10
-3pa, temperature rise rate is 2-6 DEG C/min;
(4) at 1100-1480 DEG C of insulation 10-60min, and vacuum tightness>=10 are reduced
-1pa keeps; Be warming up to 1500-1650 DEG C of insulation 10-60min, and reduce vacuum tightness>=10
-1pa keeps; Be warming up to 1650-1700 DEG C of insulation 10-40min, gas clean-up≤10
-2pa keeps, and obtains MoSi after cooling
2/ SiC composite porous ceramic.
4. a preparation method for molybdenum disilicide/silicon carbide compound porous ceramics, is characterized in that, its step is as follows:
(1) by Mo powder, Si powder, C powder and B powder ball mill mixing, the weight ratio of described Mo powder, Si powder, C powder and B powder is 50-80:20-35:1-10:1-5, and mixing time is 12-72hr, adds the binding agent of Mo powder, Si powder, C powder and B powder gross weight 5-17%, and compression molding, obtain blank;
(2) blank room temperature is dried, then enter oven for drying 1-72hr;
(3) the blank immigration after oven dry is covered with in the vacuum sintering furnace of the metal Si powder of Mo powder, Si powder, C powder and B powder gross weight 2-20%, keeps vacuum tightness 10
-2-10
-3pa, temperature rise rate is 2-6 DEG C/min;
(4) at 1100-1480 DEG C of insulation 10-60min, and vacuum tightness>=10 are reduced
-1pa keeps; Be warming up to 1500-1650 DEG C of insulation 10-60min, and reduce vacuum tightness>=10
-1pa keeps; Be warming up to 1650-1700 DEG C of insulation 10-40min, gas clean-up≤10
-2pa keeps, and obtains MoSi after cooling
2/ SiC composite porous ceramic.
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| CN107628818A (en) * | 2017-08-30 | 2018-01-26 | 巩义市泛锐熠辉复合材料有限公司 | A kind of preparation method of carbon fiber powder enhancing molybdenum disilicide based material |
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| CN112266263A (en) * | 2020-10-26 | 2021-01-26 | 中南大学 | Method for preparing porous molybdenum silicide/silicon carbide composite material by utilizing waste molybdenum silicide coating |
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| CN106116584A (en) * | 2016-06-13 | 2016-11-16 | 台州东新密封有限公司 | Reaction-sintered prepares the method for carborundum/molybdenum disilicide composite ceramics |
| CN107628818A (en) * | 2017-08-30 | 2018-01-26 | 巩义市泛锐熠辉复合材料有限公司 | A kind of preparation method of carbon fiber powder enhancing molybdenum disilicide based material |
| CN107628818B (en) * | 2017-08-30 | 2020-09-25 | 巩义市泛锐熠辉复合材料有限公司 | Preparation method of carbon fiber powder reinforced molybdenum disilicide-based composite material |
| CN108329045A (en) * | 2018-03-26 | 2018-07-27 | 中原工学院 | A kind of preparation method of reaction infiltration carbon nanotubes-composite material of silicon carbide |
| CN110041091A (en) * | 2019-04-02 | 2019-07-23 | 上海交通大学 | A kind of preparation method of the heat-insulated microballoon filler of the resistance to ablation of high emissivity |
| CN110041091B (en) * | 2019-04-02 | 2022-08-09 | 上海交通大学 | Preparation method of high-emissivity ablation-resistant heat-insulation microsphere filler |
| CN112266263A (en) * | 2020-10-26 | 2021-01-26 | 中南大学 | Method for preparing porous molybdenum silicide/silicon carbide composite material by utilizing waste molybdenum silicide coating |
| CN112284170A (en) * | 2020-10-29 | 2021-01-29 | 中国科学院上海应用物理研究所 | Method for assembling porous ceramic enhanced heat conduction inorganic salt phase change heat storage element and heat storage element formed by same |
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