CN102731094B - Silicon carbide-nano carbon tube composite toughened sealing wearing ring and preparation method thereof - Google Patents
Silicon carbide-nano carbon tube composite toughened sealing wearing ring and preparation method thereof Download PDFInfo
- Publication number
- CN102731094B CN102731094B CN201210191535.2A CN201210191535A CN102731094B CN 102731094 B CN102731094 B CN 102731094B CN 201210191535 A CN201210191535 A CN 201210191535A CN 102731094 B CN102731094 B CN 102731094B
- Authority
- CN
- China
- Prior art keywords
- silicon carbide
- weight parts
- purity
- weight
- nano
- 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.)
- Active
Links
Landscapes
- Ceramic Products (AREA)
Abstract
The invention provides a silicon carbide-nano carbon tube composite toughened sealing wearing ring and a preparation method thereof. The silicon carbide-nano carbon tube composite toughened sealing wearing ring is characterized in that: the wearing ring comprises 85.0-95.0 parts by weight of sub-micron silicon carbide, 1.0-20.0 parts by weight of a water-soluble agglomerant, 0.1-5.0 parts by weight of a dispersant, 0.5-10.0 parts by weight of nano carbon tubes, and at least one selected from 0.5-9.0 parts by weight of nano-grade boron carbide, 0.5-10.0 parts by weight of nano-grade titanium boride, 0.5-10.0 parts by weight of nano-grade titanium carbide, 4.0-10.0 parts by weight of nano-grade alumina, and 4.0-10.0 parts by weight of nano-grade yttria. The performances of the silicon carbide sealing wearing ring are substantially improved. Especially, the performances such as fracture toughness, flexural strength, and reliability are improved. Therefore, the wearing ring is suitable to be used in operating conditions and media with high temperature, high pressure, and severe corrosion.
Description
Technical field
The present invention relates to a kind of silicon carbide-CNT (carbon nano-tube) composite toughening sealing bull ring and preparation method thereof, prepared sealing bull ring can be used for, in the dynamic sealing device of the various rotating speeds such as high temperature, high pressure, high rotating speed, deep-etching, pressure, medium, belonging to mechanical sealing technology field.
Background technology
Mechanical seal bull ring is a kind of dynamic seal vital part being widely used in mechanically-sealing apparatus, is directly connected to reliability, scope and life-span that sealing is used.The mechanical seal of its configuration is in a large number for each fields such as space flight, oil, chemical industry, machinery, food, pharmacy, automobiles.Hard sealing bull ring in early stage mechanical seal, the mechanically resistant material adopting is made up of steel, aluminum oxide, sintering metal, Wimet etc., sealing bull ring work-ing life of making of these mechanically resistant materials short, poor reliability, and use limitation, can not under some corrosive medium and high-parameters condition, use.
Develop again afterwards reaction sintering silicon carbide ceramic sealing bull ring, this sealing bull ring is to be combined by carborundum powder, graphite and the additive formulations of different-grain diameter, process through operations such as compacting, pre-burning, Vehicle Processing, whole burning, mill processing, grindings, sintering temperature is 1600 DEG C, when sintering by metal silicon chip dissolve rear infiltration react with carbon in base substrate generate new silicon carbide silicon carbide in base substrate is combined.Its sealing property improves a lot than materials such as steel, aluminum oxide, sintering metal, Wimet, but its main drawback is: disposable siliconising has not only taken the useful space of stove, reduce output, and increased industrial residue, affected environmental protection; And silicon carbide contents of free si is high, not corrosion-resistant, can affect food safety if merged in food, medicine the inside; Its comprehensive mechanical physical index is lower, can not be applied to the operating mode of high temperature, high pressure, deep-etching and the dynamic seal of some medium, is not also suitable for food and medicine industry.Develop again afterwards pressureless sintering silicon carbide, its feature is that purity is high, performance is better than silicon carbide reaction-sintered greatly, be widely used in the operating mode pump that various requirement is higher, although met most of requirement, but to high temperature, high pressure, deep-etching operating mode and medium requirements at the higher level operating mode, above two kinds of ceramic sealing cup contg, silicon carbides can not adapt to again, and especially its fragility and thermal-shock resistance are more inadaptable.
Summary of the invention
The invention provides and a kind ofly there is higher fracture toughness property and flexural strength and can be applicable to silicon carbide-CNT (carbon nano-tube) composite toughening sealing bull ring of high temperature, high pressure, deep-etching operating mode and medium and preparation method thereof.
For realizing above object, the invention provides a kind of silicon carbide-CNT (carbon nano-tube) composite toughening sealing bull ring, it is characterized in that, its raw material comprises: submicron silicon carbide 85.0～95.0 weight parts, water-soluble binder 1.0～20.0 weight parts, dispersion agent 0.1～5.0 weight part, CNT (carbon nano-tube) 0.5～10.0 weight part, and nano boron carbide 0.5～9.0 weight part, nanometer titanium boride 0.5～10.0 weight part, nano titanium carbide 0.5～10.0 weight part, at least one in nano aluminium oxide 4.0～10.0 weight parts and nano yttrium oxide 4.0～10.0 weight parts, described dispersion agent is that weight ratio is 5～15: 1 ethanol and the mixture of tetramethyl-aqua ammonia.
Preferably, the median size (D of described submicron silicon carbide
50) be 400～600 nanometers, purity is more than 99.5wt%.
Preferably, the median size of described nano boron carbide, CNT (carbon nano-tube), nanometer titanium boride, nano titanium carbide, nano aluminium oxide and nano yttrium oxide is below 200 nanometers, and purity is more than 99.5wt%.
Preferably, described water-soluble binder is one or more in water soluble phenol resin, PVA, PEG and dextrin, and its purity is more than 95.0wt%.
The present invention also provides the preparation method of above-mentioned silicon carbide-CNT (carbon nano-tube) composite toughening sealing bull ring, comprise each raw material is dispersed into slurry, mist projection granulating, dry-pressing or isostatic pressing, then carry out atmosphere sintering and make silicon carbide-CNT (carbon nano-tube) composite toughening sealing bull ring, it is characterized in that, the described concrete steps that each raw material are dispersed into slurry are that the each raw material except dispersion agent is mixed in proportion, add deionized water, add dispersion agent, be dispersedly prepared into the slurry that concentration is 40～55wt%.
Preferably, described dispersed be to disperse and at least one of strong stirring carried out under acting in ultrasonic wave.
Preferably, the external diameter of described silicon carbide-CNT (carbon nano-tube) composite toughening sealing bull ring is 4mm-500mm.
Described mist projection granulating, dry-pressing or etc. the technological process such as static pressure, atmosphere sintering be the conventional preparation method with reference to known pressureless sintering silicon carbide; Out temperature when major control mist projection granulating, the pressure of slurry or centrifuge speed, to obtain suitable water-content and the pelletizing of granular size, adjust to control biscuit density by dry-pressing or isostatic pressing pressure, by atmosphere sintering heat up, preservation and controlling sintered density.
CNT (carbon nano-tube) is nearly ten years newfound novel materials, it has unique texture, diametric(al) reaches several nanometers to tens nanometers, and length direction can reach hundreds of to thousands of nanometers, therefore, it except keep carbon original wear-resisting, have self lubricity, also as carbon fiber, there is the properties such as high strength, high elastic coefficient and electroconductibility.According to nano combined toughness reinforcing principle, in silicon carbide substrate, add CNT (carbon nano-tube) or add again other nanoparticle, they are distributed in crystal boundary, intracrystalline, producing bridging or improve boundary stress, thereby make the strength and toughness of matrix, improve again self lubricity simultaneously.The present invention, according to CNT (carbon nano-tube) composite strengthening, toughness reinforcing principle, realizes in the preparation and application of silicon carbide-CNT (carbon nano-tube) composite toughening sealing bull ring.
Compared with prior art, advantage of the present invention is:
1, the present invention has added one or more in CNT (carbon nano-tube) and other nanophase in submicron silicon carbide, adopt dispersion agent of the present invention and dispersing method to make it dispersed, the performance of the silicon carbide sealing bull ring of preparation greatly improves, and especially the performance of fracture toughness property, flexural strength and reliability improves;
2, the raising of silicon carbide purity, makes this novel silicon carbide sealing bull ring be more suitable for applying in high temperature, high pressure, deep-etching operating mode and medium;
3, the product of gained of the present invention is a kind of non-metallic material, and its use field is not only in mechanical seal, and can make heat-resisting, the wear-resisting important mechanical component such as axle sleeve, bearing shell, bearing, nozzle.Because work reliability improves, reduce and reveal, protection of the environment, reduces maintenance cycle, and can replace by rare metals such as tungsten, cobalt, nickel is completely the hard alloy seal ring that raw material is made, and has saved a large amount of national strategy goods and materials, has very large social benefit.
Embodiment
Below in conjunction with embodiment, the invention will be further described.
Embodiment 1
A kind of silicon carbide-CNT (carbon nano-tube) Combine Toughening Ceramics sealing bull ring, its raw material is: median size is the D that 500 nanometers, purity are 99.5wt%
50500 nanometer silicon carbide 90 weight parts, purity is water soluble phenol resin 6 weight parts of 99.5wt%, dispersion agent 1 weight part, mean diameter is that 50 nanometers, length are CNT (carbon nano-tube) 2 weight parts that 100 nanometers, purity are 99.5wt%, and median size is nano boron carbide 1 weight part that 100 nanometers, purity are 95.0wt%, described dispersion agent is that weight ratio is the mixture of the purity of 10: 1 ethanol that is 99wt% and the purity tetramethyl-aqua ammonia that is 99wt%.
Its preparation method is: by D
50500 nanometer silicon carbide 90 weight parts, water soluble phenol resin 6 weight parts, CNT (carbon nano-tube) 2 weight parts and nano boron carbide 1 weight part are mixed in proportion, add 100 parts by weight of deionized water, adding in proportion dispersant A is 1 weight part, the slurry that the dispersed one-tenth concentration of above-mentioned composition is 50wt%, through mist projection granulating, inlet temperature; 200 DEG C, temperature out; 90 DEG C, feed pressure; 0.5MPa, isostatic pressing, forming pressure; 150MPa is then incubated at 2100 DEG C and under 1 hour, carries out sintering and make silicon carbide-CNT (carbon nano-tube) composite toughening sealing bull ring in argon atmospher.The volume density (GB/T 2413) of silicon carbide-CNT (carbon nano-tube) composite toughening sealing bull ring of gained: 3.08g/cm
3; Flexural strength (GB/T 6569): 450MPa; Fracture toughness property (JIS R 1607): 4.5MPam
1/2; Young's modulus (GB/T 10700): 400GPa; Hardness HRA (GB/T 230): 93.
Aforesaid method can be used for making the silicon carbide ceramic seal bull ring of external diameter Φ 8mm-Φ 500mm.The silicon carbide ceramic seal bull ring that this strength and toughness is high, is more suitable for applying in high temperature, high pressure, deep-etching operating mode and medium, uses and seals bull ring, at rotating speed in ethylene plant's series connection centrifugal compressor as dry gas seals; 12000 turn, the diameter of axle: the application of succeeding under the operating mode of 300MM.This stupalith also can be made heat-resisting, the wear-resisting important mechanical component such as axle sleeve, bearing shell, bearing, nozzle.
Embodiment 2
A kind of silicon carbide-CNT (carbon nano-tube) Combine Toughening Ceramics sealing bull ring, its raw material is: median size is 500 nanometers, purity is nanometer silicon carbide 85 weight parts of 99.5wt%, median size is 200 nanometers, purity is nano boron carbide 1 weight part of 99.5wt%, purity is water-solubility PVA (model 1755) 3 weight parts of 99.0wt%, mean diameter is 30 nanometers, length is 150 nanometers, purity is CNT (carbon nano-tube) 2 weight parts of 99.5wt%, median size is 100 nanometers, purity is nanometer titanium boride 3 weight parts of 95.0wt%, median size is 80 nanometers, purity is nano boron carbide 3 weight parts of 95.0wt%, dispersion agent 2 weight parts, described dispersion agent is that weight ratio is the mixture of 15: 1 purity ethanol that is 99wt% and the purity tetramethyl-aqua ammonia that is 99wt%.
Its preparation method is: by submicron silicon carbide 85 weight parts, and nano boron carbide 1 weight part, water-solubility PVA 3 weight parts, CNT (carbon nano-tube) 2 weight parts, nanometer titanium boride 3 weight parts, nano boron carbide 3 weight parts, are mixed in proportion, add 100 parts by weight of deionized water, add in proportion again dispersion agent 2 weight parts, stir 6 hours with 500 revs/min of speed, dispersedly become the slurry that concentration is 50wt%, through mist projection granulating, inlet temperature; 200 DEG C, temperature out; 90 DEG C, feed pressure; 0.5MPa, isostatic pressing, forming pressure; 200MPa, then in argon atmospher, at 2050 DEG C, be incubated and under 1 hour, carry out sintering and make silicon carbide-CNT (carbon nano-tube) composite toughening sealing bull ring.The volume density (GB/T 2413) of silicon carbide-CNT (carbon nano-tube) composite toughening sealing bull ring of gained: 3.13g/cm
3; Flexural strength (GB/T 6569): 460MPa; Fracture toughness property (JIS R 1607): 4.6MPam
1/2; Young's modulus (GB/T 10700): 410GPa; Hardness HRA (GB/T 230): 93.
Aforesaid method can be used for making the ceramic sealing cup contg, silicon carbide of external diameter Φ 5mm-Φ 500mm.The silicon carbide ceramic seal bull ring that this strength and toughness is high, is more suitable for applying in high temperature, high pressure, deep-etching operating mode and medium, for example, as the centrifugal compressor dry gas seals sealing bull ring of connecting in transfering natural gas from the west to the east.At rotating speed; 15000 turn, the diameter of axle: successful Application under the operating mode of 250MM.This stupalith also can be made heat-resisting, the wear-resisting important mechanical component such as axle sleeve, bearing shell, bearing, nozzle.
Embodiment 3
A kind of silicon carbide-CNT (carbon nano-tube) Combine Toughening Ceramics sealing bull ring, its raw material is: median size is 400 nanometers, purity is submicron silicon carbide (molecular formula is α-SiC) 85 weight parts of 99.5wt%, median size is 200 nanometers, purity is nano aluminium oxide 8 weight parts of 99.9wt%, median size is 100 nanometers, purity is nano yttrium oxide 6 weight parts of 99.9wt%, purity is water-soluble PEG 3 weight parts of 99.0wt%, water-soluble dextrin 1 weight part, mean diameter is 60 nanometers, length is 90 nanometers, purity is CNT (carbon nano-tube) 5 weight parts of 99.5wt%, dispersant A 2 weight parts, described dispersion agent is that weight ratio is the mixture of the purity of 5: 1 ethanol that is 99wt% and the purity tetramethyl-aqua ammonia that is 99wt%.
Its preparation method is: submicron silicon carbide 85 weight parts, nano aluminium oxide 8 weight parts, nano yttrium oxide 6 weight parts, water-soluble PEG 3 weight parts, water-soluble dextrin 1 weight part, CNT (carbon nano-tube) 5 weight parts, be mixed in proportion, add 100 parts by weight of deionized water, add in proportion dispersion agent 2 weight parts, with 40KHz ultra-sonic oscillation 20 minutes, with 800 revs/min of speed, stir the slurry that dispersed one-tenth concentration is 52wt% 8 hours again, through mist projection granulating, inlet temperature; 230 DEG C, temperature out; 95 DEG C, feed pressure; 0.5MPa, isostatic pressing; Forming pressure; 150MPa, then in argon atmospher, at 2000 DEG C, be incubated and under 1 hour, carry out sintering and make silicon carbide-CNT (carbon nano-tube) composite toughening sealing bull ring.The volume density (GB/T 2413) of silicon carbide-CNT (carbon nano-tube) composite toughening sealing bull ring of gained: 3.20g/cm
3; Flexural strength (GB/T 6569): 480MPa; Fracture toughness property (JIS R 1607): 5.0MPam
1/2; Young's modulus (GB/T 10700): 400GPa; Hardness HRA (GB/T 230): 93.
Aforesaid method can be used for making the ceramic sealing cup contg, silicon carbide of external diameter Φ 4mm-Φ 500mm.The silicon carbide ceramic seal bull ring that this strength and toughness is high, is more suitable for applying in high temperature, high pressure, deep-etching operating mode and medium, for example, as the dry gas seals of refinery sealing bull ring, at rotating speed; 10000 turn, the diameter of axle: the application of succeeding in the operating mode of 350MM.This stupalith also can be made heat-resisting, the wear-resisting important mechanical component such as axle sleeve, bearing shell, bearing, nozzle.
Embodiment 4
A kind of silicon carbide-CNT (carbon nano-tube) Combine Toughening Ceramics sealing bull ring, its raw material is: median size is 600 nanometers, purity is submicron silicon carbide (molecular formula is α-SiC) 85 weight parts of 99.5wt%, median size is 150 nanometers, purity is nano aluminium oxide 8 weight parts of 99.0wt%, median size is 150 nanometers, purity is nano yttrium oxide 6 weight parts of 99.9wt%, purity is water-solubility PVA 1.5 weight parts of 99wt%, mean diameter is 70 nanometers, length is 100 nanometers, purity be 99.5wt% CNT (carbon nano-tube) 2 weight parts, median size is 80 nanometers, purity is nano titanium carbide 3 weight parts of 99wt%, dispersion agent 1.5 weight parts, described dispersion agent is that weight ratio is the mixture of the purity of 10: 1 ethanol that is 99wt% and the purity tetramethyl-aqua ammonia that is 99wt%.
Its preparation method is: submicron silicon carbide (molecular formula is α-SiC) 85 weight parts, nano aluminium oxide 8 weight parts, nano yttrium oxide 6 weight parts, water-solubility PVA 1.5 weight parts, CNT (carbon nano-tube) 2 weight parts, nano titanium carbide 3 weight parts, be mixed in proportion, add 100 parts by weight of deionized water, add in proportion dispersion agent 1.5 weight parts, with 40KHz ultra-sonic oscillation 10 minutes, then with 600 revs/min of speed, stir 6 hours, dispersedly be prepared into the slurry that concentration is 52wt%, through mist projection granulating; Inlet temperature; 230 DEG C, temperature out; 95 DEG C, centrifugal rotational speed; 10000 revs/min, isostatic pressing; Forming pressure; 180MPa, then in argon atmospher, at 1950 DEG C, be incubated and under 1 hour, carry out sintering and make silicon carbide-CNT (carbon nano-tube) composite toughening sealing bull ring.The volume density (GB/T 2413) of silicon carbide-CNT (carbon nano-tube) composite toughening sealing bull ring of gained: 3.24g/cm
3; Flexural strength (GB/T 6569): 500MPa; Fracture toughness property (JIS R 1607): 5.0MPam
1/2; Young's modulus (GB/T 10700): 400GPa; Hardness HRA (GB/T 230): 93.
Aforesaid method can be used for making the ceramic sealing cup contg, silicon carbide of external diameter Φ 4mm-Φ 500mm.The silicon carbide ceramic seal bull ring that this strength and toughness is high, make it be more suitable for applying in high temperature, high pressure, deep-etching operating mode and medium, for example as centrifugal compressor with sealing bull ring in refinery at rotating speed: 8000 turn, the diameter of axle: successful Application under the operating mode of 380MM.This stupalith also can be made heat-resisting, the wear-resisting important mechanical component such as axle sleeve, bearing shell, bearing, nozzle.
Claims (3)
1. silicon carbide-CNT (carbon nano-tube) composite toughening sealing bull ring, it is characterized in that, its raw material is: median size is 500 nanometers, purity is nanometer silicon carbide 85 weight parts of 99.5wt%, median size is 200 nanometers, purity is nano boron carbide 1 weight part of 99.5wt%, purity is 99.0wt%, model is 1755 water-solubility PVA 3 weight parts, mean diameter is 30 nanometers, length is 150 nanometers, purity is CNT (carbon nano-tube) 2 weight parts of 99.5wt%, median size is 100 nanometers, purity is nanometer titanium boride 3 weight parts of 95.0wt%, median size is 80 nanometers, purity is nano boron carbide 3 weight parts of 95.0wt%, dispersion agent 2 weight parts, described dispersion agent is that weight ratio is the mixture of 15: 1 purity ethanol that is 99wt% and the purity tetramethyl-aqua ammonia that is 99wt%.
2. the preparation method of silicon carbide-CNT (carbon nano-tube) composite toughening sealing bull ring as claimed in claim 1, concrete steps are: be 500 nanometers by median size, purity is nanometer silicon carbide 85 weight parts of 99.5wt%, median size is 200 nanometers, purity is nano boron carbide 1 weight part of 99.5wt%, water-solubility PVA 3 weight parts, CNT (carbon nano-tube) 2 weight parts, nanometer titanium boride 3 weight parts, median size is 80 nanometers, purity is nano boron carbide 3 weight parts of 95.0wt%, be mixed in proportion, add 100 parts by weight of deionized water, add in proportion again dispersion agent 2 weight parts, stir 6 hours with 500 revs/min of speed, dispersedly become the slurry that concentration is 50wt%, through mist projection granulating, inlet temperature, 200 DEG C, temperature out, 90 DEG C, feed pressure, 0.5MPa, isostatic pressing, forming pressure, 200MPa, then in argon atmospher, at 2050 DEG C, be incubated and under 1 hour, carry out sintering and make silicon carbide-CNT (carbon nano-tube) composite toughening sealing bull ring.
3. the preparation method of silicon carbide-CNT (carbon nano-tube) composite toughening as claimed in claim 2 sealing bull ring, is characterized in that, described dispersed be to disperse and at least one of strong stirring carried out under acting in ultrasonic wave.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210191535.2A CN102731094B (en) | 2012-06-11 | 2012-06-11 | Silicon carbide-nano carbon tube composite toughened sealing wearing ring and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210191535.2A CN102731094B (en) | 2012-06-11 | 2012-06-11 | Silicon carbide-nano carbon tube composite toughened sealing wearing ring and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102731094A CN102731094A (en) | 2012-10-17 |
| CN102731094B true CN102731094B (en) | 2014-07-02 |
Family
ID=46987489
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210191535.2A Active CN102731094B (en) | 2012-06-11 | 2012-06-11 | Silicon carbide-nano carbon tube composite toughened sealing wearing ring and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102731094B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103524132B (en) * | 2013-08-09 | 2015-03-25 | 北方民族大学 | Preparation method of carbon granule/silicon carbide ceramic-based composite material |
| CN105198434A (en) * | 2014-05-28 | 2015-12-30 | 扬州三山工业陶瓷有限公司 | High-performance pressureless sintered silicon carbide bulletproof ceramic and preparation method thereof |
| CN106431411A (en) * | 2016-07-06 | 2017-02-22 | 南通苏源化纤有限公司 | T6-type carbon nano-modified silicon carbide ceramic-based composite material |
| CN106631030A (en) * | 2017-01-21 | 2017-05-10 | 柴德维 | High-strength anticorrosive anti-abrasion silicon carbide sealing element and processing method thereof |
| CN109721369A (en) * | 2019-01-25 | 2019-05-07 | 华研(佛山)纳米材料有限公司 | A kind of composite ceramic material of carbon nanotubes and preparation method thereof |
| CN110028322A (en) * | 2019-05-15 | 2019-07-19 | 上海德宝密封件有限公司 | A kind of preparation method of multiphase composite sealing ring |
| CN113307628A (en) * | 2021-01-28 | 2021-08-27 | 上海德宝密封件有限公司 | Silicon carbide-diamond complex phase ceramic grinding ring material and preparation method thereof |
| CN112979319B (en) * | 2021-02-05 | 2022-11-01 | 奉化市飞固凯恒密封工程有限公司 | Toughened silicon carbide ceramic and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101255055A (en) * | 2008-04-03 | 2008-09-03 | 哈尔滨工业大学 | Carbon nano-tube zirconium boride-carborundum based material and preparation method thereof |
| CN101293773A (en) * | 2007-04-27 | 2008-10-29 | 山特维克知识产权股份有限公司 | Coated cutting tool |
| CN101591169A (en) * | 2009-05-22 | 2009-12-02 | 浙江东新密封有限公司 | A kind of silicon carbide carbonized complex phase ceramic sealing material and preparation method thereof |
-
2012
- 2012-06-11 CN CN201210191535.2A patent/CN102731094B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101293773A (en) * | 2007-04-27 | 2008-10-29 | 山特维克知识产权股份有限公司 | Coated cutting tool |
| CN101255055A (en) * | 2008-04-03 | 2008-09-03 | 哈尔滨工业大学 | Carbon nano-tube zirconium boride-carborundum based material and preparation method thereof |
| CN101591169A (en) * | 2009-05-22 | 2009-12-02 | 浙江东新密封有限公司 | A kind of silicon carbide carbonized complex phase ceramic sealing material and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102731094A (en) | 2012-10-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102731094B (en) | Silicon carbide-nano carbon tube composite toughened sealing wearing ring and preparation method thereof | |
| CN110028322A (en) | A kind of preparation method of multiphase composite sealing ring | |
| CN113636842B (en) | High-entropy diboride-boron carbide complex phase ceramic, preparation method and application thereof | |
| CN104630529B (en) | B4C is used as fine-grained wc Co hard alloy of dispersion-strengtherning additive and preparation method thereof | |
| CN101169188A (en) | Silicon carbide ceramic seal ring | |
| CN108640663B (en) | Graphene/silicon carbide reinforced aluminum oxide-based composite material and preparation method thereof | |
| CN110818428B (en) | Preparation method of eutectic reinforced toughened silicon nitride ceramic | |
| JPS58211863A (en) | Composite improved silicon-aluminum -oxygen nitride cutting tool also executing coating | |
| CN111057928B (en) | WC-Co-Y with excellent comprehensive mechanical properties2O3Hard alloy and preparation method thereof | |
| CN103172380A (en) | Spray granulation method of non-oxide ceramic powder | |
| CN113307628A (en) | Silicon carbide-diamond complex phase ceramic grinding ring material and preparation method thereof | |
| CN113526960B (en) | Silicon carbide ceramic and hot isostatic pressing sintering process thereof | |
| CN103524142A (en) | Preparation method of silicon nitride-silicon carbide-titanium carbide micro-nano composite material | |
| CN107266101A (en) | A kind of chopped carbon fiber strengthens the preparation method of boron carbide-based composite material | |
| CN104030686B (en) | A kind of high tenacity silicon carbide ceramics and preparation method thereof | |
| CN109942302A (en) | A kind of boride activeness and quietness silicon nitride ceramics and preparation method thereof | |
| CN111943702B (en) | In-situ synthesized beta-SIALON whisker toughened tungsten carbide composite material and preparation method and application thereof | |
| CN110735075A (en) | Preparation method of WC-based hard alloys with high wear resistance | |
| KR101793031B1 (en) | Manufacturing method of alumina-graphene composites with excellent wear resistance | |
| CN108546128B (en) | Silicon carbide ceramic pressureless sintering process | |
| CN108314455B (en) | Silicon carbide ceramic and preparation method and application thereof | |
| CN106498255A (en) | A kind of hard composite material and preparation method thereof | |
| CN112391547B (en) | Preparation method of polycrystalline material | |
| CN107512921A (en) | A kind of preparation method of carbon fiber powder enhancing nitride silicon based composite material | |
| WO2019095715A1 (en) | High-temperature sensitive nano-material and preparation method therefor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |