CN101164975B - Silicon carbide ceramic containing carbon fiber and sheet aluminum oxide embedded particles - Google Patents
Silicon carbide ceramic containing carbon fiber and sheet aluminum oxide embedded particles Download PDFInfo
- Publication number
- CN101164975B CN101164975B CN2006101370105A CN200610137010A CN101164975B CN 101164975 B CN101164975 B CN 101164975B CN 2006101370105 A CN2006101370105 A CN 2006101370105A CN 200610137010 A CN200610137010 A CN 200610137010A CN 101164975 B CN101164975 B CN 101164975B
- Authority
- CN
- China
- Prior art keywords
- silicon carbide
- charcoal fiber
- aluminum oxide
- sheet
- weight
- 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.)
- Expired - Fee Related
Links
Landscapes
- Ceramic Products (AREA)
Abstract
The present invention relates to silicon carbide ceramic, and is especially technological scheme of one kind of silicon carbide ceramic containing carbon fiber and embedded flaky alumina grains as the toughening material. The present invention features that partial hard-to-mix carbon fiber is replaced with flaky alumina grains easily to be mixed with other materials to reduce the negative effect of inhomogeneous material mixing. The silicon carbide ceramic has thermal expansion mismatching utilized to induce micro crack, crack deflection, crack bridging, flaky toughening grain drawing-out effect, carbon fiber drawing-out effect and other beneficial toughening factors.
Description
Technical field
The present invention relates to a kind of pottery, is about silicon carbide ceramics, particularly a kind of silicon carbide ceramics that contains charcoal fiber and sheet aluminum oxide embedded particles simultaneously.
Background technology
Mostly the present ceramics of silicon carbide toughened of report is to contain the ceramics of silicon carbide toughened of silicon carbide whisker or charcoal fiber.The report of the relevant ceramics of silicon carbide toughened that contains silicon carbide whisker referring to: Tian Jiemo etc. invent (design), Tsing-Hua University's application, application number is the patent application case " reinforcing of carbon-ceramics composite material with flexibilizer for coystal whiskers " of CN91101684.8; And, the big J Pai Qike invention of A Lishan (design), Tang Chemical Corporation's application, application number is the patent application case " silicon carbide whisker reinforced ceramic composites and method of manufacture thereof " of CN90110427.2; And; Inventions such as Cheng Laifei, Zhang Litong, Xu Yongdong, Liu Yongsheng, Li Zhen, Wang Xiaoming (design); The application of NW China polytechnical university, application number is the patent application case " a kind of whisker and particulate reinforcement ceramic matric composite preparation method " of CN200410026337.6.The report of the relevant ceramics of silicon carbide toughened that contains the charcoal fiber referring to: Geng Haoran etc. invent (design), University Of Ji'nan's application, application number is the patent application case " a kind of device and technology for preparing carbon fibre reinforced silicon carbide composite material " of CN03138926.0.
Good characteristics such as thyrite has that hot strength is big, high-temperature oxidation resistance is strong, abrasion resistance properties is good, thermostability is good, thermal expansivity is little, thermal conductivity is big, hardness is high, anti-thermal shock and resistance to chemical attack; In fields such as automobile, mechanical chemical industry, environment protection, space technology, information electronics, the energy increasingly extensive application is arranged, become a kind of irreplaceable structural ceramics of other materials at a lot of industrial circle excellent performances.
Dynamic seal in the mechanical means is to carry out through the rotational slide of two seal face materials, as the seal face material, requires hardness high, has wearability.Suitable height of the hardness of silicon carbide ceramics and frictional coefficient are little, so silicon carbide ceramics can obtain sliding properties that other material is beyond one's reach as the mechanical seal end surface material.On the other hand, two mechanical seal materials can produce certain heat owing to rub in rotary movement, thereby the local temperature of seal face is raise, so the end face material also must can tolerate certain temperature.In the rotational slide process, produce thermal strain and hot tearing for fear of the mechanical seal material, require thermal conductivity height, the good thermal shock of end face material.At present, silicon carbide ceramics obtains number of applications in all kinds of mechanical seals, and for the laborsaving of mechanical means with energy-conservationly made very big contribution, demonstrate other materials incomparable meliority.Silicon carbide ceramics also successfully is used as various bearings, cutting tool in mechanical industry.
What need in the occasion of needs such as aerospace, nuclear industry tolerances ultra high temp such as nuclear fission and the fusion reactor bears 2000 degree left and right sides pyritous heat-stable materials; Rocket and aerospacecraft surface are used for tolerating the thermal insulation tile up to thousands of K temperature that produces with the violent friction of atmosphere; Rocket combustion chamber's larynx lining and inner lining material, gas-turbine blade; The top board of High Temperature Furnaces Heating Apparatus, support, and the high temperature members such as jig of high temperature experiment usefulness also generally adopt the silicon carbide ceramics member.Silicon carbide ceramics also is widely used as various corrosion-resistant with container and pipeline in petrochemical industry.
The industrial application desired further improves the performance of silicon carbide ceramics, and the problem that at first will face is toughness reinforcing problem.With other all kinds of ceramic-like seemingly, silicon carbide ceramics has certain fragility, and how the silicon carbide ceramics of H.T. is provided, and is the important topic that this production field is paid close attention to.
Be necessary to briefly touch upon the relevant principle of ceramic toughening here.
Found that some polycrystalline phase ceramics had the resistance curve behavior in 1974 first, promptly crack growth resistance increases and increases along with crackle, and this is an important progress, and after this, people begin to improve through various microstructure designs the toughness of pottery.The Zhou Zhenjun of China's University Of Tianjin's high-temperature structural ceramics and key lab of the engineering ceramics processing technology Board of Education etc.; Be published in be entitled as " the Research on Toughening progress of high reliability structural ceramics " of " silicate circular " the 3rd phase p57-61 in 2003; And; The Hao Chuncheng of Shandong University etc.; Be published in be entitled as " progress of particulate reinforcement pottery " of the 16th volume the 2nd phase p28-30 in " material Leader " February in 2002; And the Guo Jingkun of Shanghai Silicate Inst., Chinese Academy of Sciences's high-performance ceramic and ultrastructure National Key Laboratory is published in be entitled as " about the fragility problem of stupalith " of rolling up the 6th phase p822-827 " Fudan Journal (natural science edition) " December the 42nd in 2003; And; The Liu Hanlian of the advanced jet Engineering Technical Research Centre of School of Mechanical Engineering of Shandong University etc. are published in being entitled as in the papers such as " the toughened and reinforced mechanism progress of nanocomposite ceramic material " of the 22nd volume the 2nd phase p98-103 in " PM technique " April in 2004, and ceramic toughening theory problem and practice are had detailed introduction.
The malleableize mode of pottery mainly contains that transformation toughening, fiber (whisker) are toughness reinforcing, particulate reinforcement and composite toughening.Wherein, particulate reinforcement is the simplest a kind of method of ceramic toughening, and it has many advantages such as improving intensity and toughness simultaneously.The principal element that influences the second phase particulate composite toughening effect is a matrix and second particulate elastic modulus E, thermalexpansioncoefficient and the biphase chemical compatibility mutually.Wherein chemical compatibility is the compound prerequisite, and two alternately can not exist too much chemical reaction, must have suitable interface comprehensive strength simultaneously again.Utilize the mismatch of thermalexpansioncoefficient, thereby, be the toughened and reinforced main root of complex phase ceramic in the second phase particle and the residual stress field of the inner generation of matrix on every side.Suppose between the second phase particle and the matrix chemical reaction not to take place, if having the mismatch of thermal expansivity, i.e. Δ α=α between the second phase particle and the matrix
p-α
m≠ 0 (p, m represent particle and matrix), when Δ α＞0, the second phase particle is in tensile stress state, and matrix radially is in stretched state, and the tangential is in compressed state, and at this moment crackle tends to walk around particle and continues expansion; When Δ α＜0, the second phase particle is in compressive stress state, and the tangential receives tensile stress, and at this moment crackle tends at particle place pinning or passes particle.Thereby the appearance of tiny crack can absorb energy and reach toughness reinforcing purpose; One of tiny crack toughening mecha-nism operating is a crack deflection; Crack deflection is a kind of crack tip effect, is meant the inclination and the deflection that when crack tip runs into deflection thing (particle, fiber, whisker, interface etc.), are taken place in the crack propagation process; Two of tiny crack toughening mecha-nism operating is crackle bridgings; Bridging thing (particle, fiber, whisker etc.) connect near two surfaces of two crackles of bridging thing and provide one make two crack surfaces each other near stress; Be closure stress, cause stress intensity factor to increase like this with crack propagation.When crack propagation ran into bridging agent, the possible grain failure of bridging thing also the interlocking phenomenon possibly occur, and promptly crackle is walked around the bridging thing along crystal boundary development and formation friction bridge.Briefly, the second mutually heterogeneous phase particulate is introduced, and with bringing a large amount of tiny cracks, a large amount of dominance or recessive tiny crack can dissipate or dissolve or absorb external destructive tension stress.In addition, adopting whisker to carry out also existing and extracting effect when toughness reinforcing, extracting effect also is a kind of toughness reinforcing factor that helps.When the second mutually heterogeneous phase particle of introducing is nano particle, also help and suppress growing up of ceramic base material crystal grain, the micro of ceramic base material crystal grain also is an important toughening mecha-nism operating in the Low fire ceramic; From fracture toughness property value and displaing microstructure observing result, the sample microcosmic is the nano level microscopic structure, and then macro manifestations goes out the highest fracture toughness property; Can think that the particulate refinement makes weave construction more even, reduce the size of stress concentration and micro-flaw; Simultaneously; The particulate refinement also makes micro-flaw quantity increase, and that is to say, fine crystalline-granular texture can cause the crystal boundary volume(tric)fraction to increase; In this case; The new crack surfaces of dissipativeness that pottery generates in the breaking-down process is long-pending to be increased, and needs the outside energy that absorbs in the process before the pottery fracture thereby increases considerably, and shows as ceramic fracture toughness on the macroscopic view and improves.
The ceramics of silicon carbide toughened that contains charcoal fiber or silicon carbide whisker is one type of silicon carbide ceramics with higher toughness really; But; The silicon carbide whisker preparation cost is higher, brings the production cost of whole toughening ceramic finished product to rise, in addition; Charcoal fiber that length-to-diameter ratio is very high and silicon carbide whisker are generally speaking difficult to mix with other silicon carbide ceramics raw materials for production, and this has influenced the quality homogeneity of ceramics of silicon carbide toughened finished product to a certain extent.
Summary of the invention
The object of the invention; Provide a kind of being different from merely and carry out toughness reinforcing scheme with the charcoal fiber; The objective of the invention is to replace the charcoal fiber that is difficult to batch mixing relatively of a part with a kind of plasticizing substance of suitable cheapness; Just part displacement; But not displacement fully is to use the plasticizing substance of said cheapness and two kinds of materials of charcoal fiber to carry out the toughness reinforcing of silicon carbide ceramics simultaneously, and this part displacement solution will be taken into account the various useful toughening effect that preceding text are addressed as far as possible; The plasticizing substance of said cheapness is to be the suitable material that purpose adds with toughness reinforcing, and the plasticizing substance of said cheapness should be easy and the mixed uniformly material of other silicon carbide ceramics raw materials for production as far as possible.
The objective of the invention is to reach through following technical scheme, this technical scheme provides a kind of silicon carbide ceramics that contains charcoal fiber and sheet aluminum oxide embedded particles, and it is formed as follows:
(1) silit 48%～96% (weight)
(2) charcoal fiber 2%～20% (weight)
(3) sheet aluminum oxide embedded particles 2%～20% (weight)
(4) norbide or yttrium aluminum garnet 0%～12% (weight)
In this technical scheme, said sheet aluminum oxide embedded particles and charcoal fiber are plasticizing substances.In said silicon carbide ceramics, small and a fairly large number of said sheet-shaped alpha-alumina particles of particle and charcoal fiber exist with the form that homodisperse embeds.Said silicon carbide ceramics can be the silicon carbide ceramics that does not contain the sintering aid residue that forms via the hot-pressing sintering technique manufacturing; Said silicon carbide ceramics also can be the silicon carbide ceramics that contains the sintering aid residue that forms via the non-pressure sintering technology manufacturing.That is to say; For the silicon carbide ceramics that forms via the non-pressure sintering technology manufacturing; Can also contain the sintering aid residuals in the pottery; Said sintering aid is the material that adds for the sintering that promotes silicon carbide ceramics, and said sintering aid material is trapped in the silicon carbide ceramics after the silicon carbide ceramics sintering is accomplished, the said compound state that is trapped in the sintering aid material in the silicon carbide ceramics for example: yttrium aluminum garnet, norbide.Wherein, when using carbon-boron to be sintering aid, less because of sintering aid experience consumption, correspondingly, sintering aid residuals norbide (in this case, " norbide " speech general reference carbon-boron compound) is less; And when adopting yttrium oxide-alumina series sintering aid; Because of sintering aid experience consumption more relatively; Correspondingly; Sintering aid residuals yttrium aluminum garnet (in this case, " yttrium aluminum garnet " speech general reference comprises the multiple known yttrium oxide of yttrium aluminum garnet and the sintering combination product between the aluminum oxide) is more; Generally speaking; In said silicon carbide ceramics; The content range of sintering aid residuals is in 0%～12% (weight), and wherein, the content of sintering aid residuals is that the situation of 0% (weight) is corresponding to the silicon carbide ceramics of processing via the hot-pressing sintering technique that does not use sintering aid.The art-recognized meanings of said hot-pressing sintering technique, non-pressure sintering technology and sintering aid material is known in silicon carbide ceramics manufacturing field.
The plate width of said sheet aluminum oxide embedded particles, and, the ratio of plate width and sheet, in fact allowed band broad; But reasonable range of choice is: the plate width of said sheet aluminum oxide embedded particles is between 0.3 micron and 6.0 microns, and the plate width of said sheet aluminum oxide embedded particles and the ratio of sheet are between 3 and 10.
Nano level or exist near nano level insert particulate helps in sintering procedure, to suppress growing up of carborundum grain, carborundum grain refinement be an important toughening mecha-nism operating.
In said silicon carbide ceramics; The content of said sheet aluminum oxide embedded particles, charcoal fiber, silit and sintering aid residuals, granule-morphology and element formation etc., X-ray powder diffraction, Electronic Speculum transmission, electron-microscope scanning and microcell ultimate analysis or the like the prior art means that can be used in combination are judged.
Be different from merely and carry out toughness reinforcing scheme, the present invention is to provide a kind of silicon carbide ceramics that contains charcoal fiber and sheet aluminum oxide embedded particles simultaneously with the charcoal fiber.Characteristics of the present invention; Be to utilize sheet-shaped alpha-alumina particles to replace the charcoal fiber that is difficult to batch mixing relatively of a part; The negative impact that possibly bring so as to reduction batch mixing inequality; Scheme of the present invention is to combine to utilize sheet-shaped alpha-alumina particles and charcoal fiber that silicon carbide ceramics is carried out combined plasticizing, and sheet-shaped alpha-alumina particles is easy to make the raw material uniform mixing with other.Scheme of the present invention is taken into account and is utilized that thermal expansion mismatch is brought out tiny crack, crack deflection, crackle bridging, the toughness reinforcing particle of sheet extracts effect and the charcoal fiber is extracted useful toughening mecha-nism operating such as effect.
Scheme of the present invention provides the toughness reinforcing but not extremely toughness reinforcing silicon carbide ceramics of a kind of appropriateness, and the silicon carbide ceramics that scheme of the present invention provides is applicable to that some only need the toughness reinforcing but not extremely toughness reinforcing application scenario of appropriateness.
Embodiment
Embodiment 1, contains one of the preparation method of the silicon carbide ceramics of charcoal fiber and sheet aluminum oxide embedded particles: with the C-B sintering aid of 0.5%-3.0% (weight), with the sheet-shaped alpha-alumina particles of 2.0%-20.0% (weight); And, the charcoal fiber of 2.0%-20.0% (weight), and; The carborundum powder of 57.0%-95.5% (weight), and, an amount of PVA (Z 150PH); Carry out dry ball milling and mix, compression molding is solidified 100 ℃ of-300 ℃ of temperature ranges; Afterwards, 1700 ℃ of-2100 ℃ of temperature range sintering 0.5-3.0 hour, process the silicon carbide ceramics that contains charcoal fiber and sheet aluminum oxide embedded particles.
Said carborundum powder is to be made up of general carborundum grain.
The technology of preparing of sheet-shaped alpha-alumina particles or tailor-made product can be provided by Hi-tech Industry Development portion of Chinese Wuhan University, Wuhan University productivity promotion center.The preparation method of said sheet-shaped alpha-alumina particles (tabular alumina powder just) also can find in the prior art; Said prior art is for example: (1) contriver is: Sai Ersi R Xibe is special, like special magnificent L Ge Lawen, Jr; The applicant is: Sheng Geben/promise industrial enamel ltd of pausing; Application number is: CN94100796.0 is entitled as: the application for a patent for invention case of " tabular alumina ". and (2) contriver is: new Tian Shengjiu, Chen Mingshou, villous themeda are former pure, and the applicant is: Merck Patent GmbH; Application number is: CN96112590.X is entitled as: the application for a patent for invention case of " flake aluminum oxide and pearly pigment and method of manufacture thereof ".In addition, Chinese Zhejiang Province enterprise supply from stock (this thing mainly was the substrate as pearly pigment originally) in a large number.Zhengzhou research institute of Chinese Aluminium Co., Ltd also can provide the technology of preparing of multiple special appearance alumina particle.
About the source of charcoal fiber, as search word, can find many relevant suppliers of family at an easy rate on the internet with " charcoal fiber ".
Embodiment 2, contain charcoal fiber and sheet aluminum oxide embedded particles silicon carbide ceramics the preparation method two: with the C-B sintering aid of 0.5%-3.0% (weight), with the sheet-shaped alpha-alumina particles of 2.0%-20.0% (weight), and; The charcoal fiber of 2.0%-20.0% (weight), and, the carborundum powder of 57.0%-95.5% (weight), and; An amount of PVA (Z 150PH), and, an amount of water; Be made into pasty material, carry out wet ball grinding and mix, through dry; Granulation, compression molding is solidified 100 ℃ of-300 ℃ of temperature ranges; Afterwards, 1700 ℃ of-2100 ℃ of temperature range sintering 0.5-3.0 hour, process the silicon carbide ceramics that contains charcoal fiber and sheet aluminum oxide embedded particles.
Wherein, the acquiring way of the technology of preparing of sheet-shaped alpha-alumina particles or product and charcoal fiber is with embodiment 1.
Embodiment 3, contain charcoal fiber and sheet aluminum oxide embedded particles silicon carbide ceramics the preparation method three: with the C-B sintering aid of 0.5%-3.0% (weight), with the sheet-shaped alpha-alumina particles of 2.0%-20.0% (weight), and; The charcoal fiber of 2.0%-20.0% (weight), and, the carborundum powder of 57.0%-95.5% (weight), and; An amount of PVA (Z 150PH), and an amount of water is made into pasty material; Carry out mechanical stirring and mix, simultaneously pasty material is applied UW, after so handling, through dry; Granulation, compression molding is solidified 100 ℃ of-300 ℃ of temperature ranges; Afterwards, 1700 ℃ of-2100 ℃ of temperature range sintering 0.5-3.0 hour, process the silicon carbide ceramics that contains charcoal fiber and sheet aluminum oxide embedded particles.
Wherein, the acquiring way of the technology of preparing of sheet-shaped alpha-alumina particles or product and charcoal fiber is with embodiment 1.
Embodiment 4, contain charcoal fiber and sheet aluminum oxide embedded particles silicon carbide ceramics the preparation method four: with the yttrium oxide of 3.0%-5.0% (weight), with the sheet-shaped alpha-alumina particles of 10.0%-20.0% (weight), and; The charcoal fiber of 10.0%-20.0% (weight), and, the carborundum powder of 55.0%-77.0% (weight), and; An amount of PVA (Z 150PH), and, an amount of water; Be made into pasty material, carry out wet ball grinding and mix, through dry; Granulation, compression molding is solidified 100 ℃ of-300 ℃ of temperature ranges; Afterwards, 1700 ℃ of-2100 ℃ of temperature range sintering 0.5-3.0 hour, process the silicon carbide ceramics that contains charcoal fiber and sheet aluminum oxide embedded particles.
Wherein, the acquiring way of the technology of preparing of sheet-shaped alpha-alumina particles or product and charcoal fiber is with embodiment 1.
Embodiment 5, contain charcoal fiber and sheet aluminum oxide embedded particles silicon carbide ceramics the preparation method five: with the yttrium oxide of 3.0%-5.0% (weight), with the sheet-shaped alpha-alumina particles of 10.0%-20.0% (weight), and; The charcoal fiber of 10.0%-20.0% (weight), and, the carborundum powder of 55.0%-77.0% (weight), and; An amount of PVA (Z 150PH), and an amount of water is made into pasty material; Carry out mechanical stirring and mix, simultaneously pasty material is applied UW, after so handling, through dry; Granulation, compression molding is solidified 100 ℃ of-300 ℃ of temperature ranges; Afterwards, 1700 ℃ of-2100 ℃ of temperature range sintering 0.5-3.0 hour, process the silicon carbide ceramics that contains charcoal fiber and sheet aluminum oxide embedded particles.
Wherein, the acquiring way of the technology of preparing of sheet-shaped alpha-alumina particles or product and charcoal fiber is with embodiment 1.
Embodiment 6; Contain charcoal fiber and sheet aluminum oxide embedded particles silicon carbide ceramics the preparation method six: with the sheet-shaped alpha-alumina particles of 2.0%-20.0% (weight), with the charcoal fiber of 2.0%-20.0% (weight), and; The carborundum powder of 60.0%-96.0% (weight); Carry out dry ball milling and mix, afterwards, place graphite jig; Under 1950 ℃ of-2200 ℃ of temperature ranges and the pressure more than the 200MPa sintering 0.5-3.0 hour, process the silicon carbide ceramics that contains charcoal fiber and sheet aluminum oxide embedded particles.
Wherein, the acquiring way of the technology of preparing of sheet-shaped alpha-alumina particles or product and charcoal fiber is with embodiment 1.
Embodiment 7, contain charcoal fiber and sheet aluminum oxide embedded particles silicon carbide ceramics the preparation method seven: with the sheet-shaped alpha-alumina particles of 2.0%-20.0% (weight), with the charcoal fiber of 2.0%-20.0% (weight); And, the carborundum powder of 60.0%-96.0% (weight), and; An amount of water is made into pasty material, carries out wet ball grinding and mixes; After drying; Place graphite jig, under 1950 ℃ of-2200 ℃ of temperature ranges and the pressure more than the 200MPa sintering 0.5-3.0 hour, process the silicon carbide ceramics that contains charcoal fiber and sheet aluminum oxide embedded particles.
Wherein, the acquiring way of the technology of preparing of sheet-shaped alpha-alumina particles or product and charcoal fiber is with embodiment 1.
Embodiment 8, contain charcoal fiber and sheet aluminum oxide embedded particles silicon carbide ceramics the preparation method eight: with the sheet-shaped alpha-alumina particles of 2.0%-20.0% (weight), with the charcoal fiber of 2.0%-20.0% (weight); And, the carborundum powder of 60.0%-96.0% (weight), and; Adequate amount of ethanol is made into pasty material, carries out wet ball grinding and mixes; After drying; Place graphite jig, under 1950 ℃ of-2200 ℃ of temperature ranges and the pressure more than the 200MPa sintering 0.5-3.0 hour, process the silicon carbide ceramics that contains charcoal fiber and sheet aluminum oxide embedded particles.
Wherein, the acquiring way of the technology of preparing of sheet-shaped alpha-alumina particles or product and charcoal fiber is with embodiment 1.
Embodiment 9, contain charcoal fiber and sheet aluminum oxide embedded particles silicon carbide ceramics the preparation method nine: with the sheet-shaped alpha-alumina particles of 2.0%-20.0% (weight), with the charcoal fiber of 2.0%-20.0% (weight); And, the carborundum powder of 60.0%-96.0% (weight), and; Amount of methanol is made into pasty material, carries out wet ball grinding and mixes; After drying; Place graphite jig, under 1950 ℃ of-2200 ℃ of temperature ranges and the pressure more than the 200MPa sintering 0.5-3.0 hour, process the silicon carbide ceramics that contains charcoal fiber and sheet aluminum oxide embedded particles.
Wherein, the acquiring way of the technology of preparing of sheet-shaped alpha-alumina particles or product and charcoal fiber is with embodiment 1.
Embodiment 10, contain charcoal fiber and sheet aluminum oxide embedded particles silicon carbide ceramics the preparation method ten: with the sheet-shaped alpha-alumina particles of 2.0%-20.0% (weight), with the charcoal fiber of 2.0%-20.0% (weight); And, the carborundum powder of 60.0%-96.0% (weight), and; An amount of water is made into pasty material, carries out mechanical stirring and mixes; Simultaneously pasty material is applied UW, so handle and after drying, place graphite jig; Under 1950 ℃ of-2200 ℃ of temperature ranges and the pressure more than the 200MPa sintering 0.5-3.0 hour, process the silicon carbide ceramics that contains charcoal fiber and sheet aluminum oxide embedded particles.
Wherein, the acquiring way of the technology of preparing of sheet-shaped alpha-alumina particles or product and charcoal fiber is with embodiment 1.
For making things convenient for the technician outside this area to understand and embodiment of the present invention, it is norbide that the embodiment of all relating in the embodiment of the invention " C-B sintering aid ", " C-B sintering aid " all specify, i.e. B
4C.
In the various embodiments of the present invention, the consumption of related raw material all provides with range format, implements by listed amount ranges, all can realize the object of the invention in varying degrees; For making things convenient for the technician outside this area to understand and embodiment of the present invention, the intermediate value that can specify the listed amount ranges of each raw material is an optimum amount enforcement value.
For making things convenient for the technician outside this area to understand and embodiment of the present invention, it is vacuum carbon tube furnace or hot-pressed sintering furnace that agglomerating plant can be specified; Can find the supplier of many these kind equipments on the internet.
Testing method and dependence test instrument about ceramic performance; For making things convenient for the technician outside this area to go and find out what's going on; Explain as follows: key in retrieval with suitable keyword,, can find many relevant informations through Chinese periodical net and foreign language periodicals net and each large search instrument of internet.
Claims (1)
1. silicon carbide ceramics that contains charcoal fiber and sheet aluminum oxide embedded particles, it is formed as follows:
(1) carborundum powder 48%～96% (weight);
(2) charcoal fiber 2%～20% (weight);
(3) sheet aluminum oxide embedded particles 2%～20% (weight);
(4) norbide or yttrium aluminum garnet 0%～12% (weight);
The plate width of said sheet aluminum oxide embedded particles is between 0.3 micron and 6.0 microns, and the plate width of said sheet aluminum oxide embedded particles and the ratio of sheet are between 3 and 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006101370105A CN101164975B (en) | 2006-10-16 | 2006-10-16 | Silicon carbide ceramic containing carbon fiber and sheet aluminum oxide embedded particles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006101370105A CN101164975B (en) | 2006-10-16 | 2006-10-16 | Silicon carbide ceramic containing carbon fiber and sheet aluminum oxide embedded particles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101164975A CN101164975A (en) | 2008-04-23 |
| CN101164975B true CN101164975B (en) | 2012-05-23 |
Family
ID=39333856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006101370105A Expired - Fee Related CN101164975B (en) | 2006-10-16 | 2006-10-16 | Silicon carbide ceramic containing carbon fiber and sheet aluminum oxide embedded particles |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101164975B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11338986B2 (en) * | 2018-07-10 | 2022-05-24 | Pacific Market International, Llc | Double-walled beverage container and method of forming the same |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1600743A (en) * | 2003-09-22 | 2005-03-30 | 中国科学院金属研究所 | High intensity ceramic ball made from compact silicon carbide and preparation method |
-
2006
- 2006-10-16 CN CN2006101370105A patent/CN101164975B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1600743A (en) * | 2003-09-22 | 2005-03-30 | 中国科学院金属研究所 | High intensity ceramic ball made from compact silicon carbide and preparation method |
Non-Patent Citations (4)
| Title |
|---|
| Manabu Fukushima等.Microstructural Characterization of Porous Silicon CarbideMembrane Support With and Without Alumina Additive.Journal of American Ceramic Society89 5.2006,89(5),experimental procedure部分. |
| Manabu Fukushima等.Microstructural Characterization of Porous Silicon CarbideMembrane Support With and Without Alumina Additive.Journal of American Ceramic Society89 5.2006,89(5),experimental procedure部分. * |
| 周振君等.样板晶生长法制备Y-TZP/Al2O3复相陶瓷的力学和抗热震性能.耐火材料38 1.2004,38(1),结果与讨论部分. |
| 周振君等.样板晶生长法制备Y-TZP/Al2O3复相陶瓷的力学和抗热震性能.耐火材料38 1.2004,38(1),结果与讨论部分. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101164975A (en) | 2008-04-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101164999B (en) | Method for preparing silicon carbide ceramic plasticized by three components combined plasticizing material combination | |
| CN101164993B (en) | Method for preparing silicon carbide ceramic composition containing fibre and whisker | |
| CN101165000B (en) | Technique for preparing silicon carbide ceramic by using sheet aluminum oxide particles to plasticize | |
| CN101164976B (en) | Silicon carbide ceramic containing whisker, fibre and rod-like embedded particles | |
| CN101164995B (en) | Method for preparing silicon carbide ceramic composition containing carbon fibre | |
| CN101164983B (en) | Silicon carbide ceramic containing silicon carbide whisker and sheet aluminum oxide embedded particles | |
| CN101164978B (en) | Silicon carbide ceramic composition containing silicon carbide whisker | |
| CN101164982A (en) | Silicon carbide ceramic containing whisker, fibre and sheet embedded particles | |
| CN101164970B (en) | Multi-component silicon carbide ceramic with insert including charcoal fibre | |
| CN101165001A (en) | Method for preparing silicon carbide ceramic plasticized by sheet aluminum oxide particle and carbon fibre combination | |
| CN101164996B (en) | Silicon carbide ceramic containing silicon carbide whisker and rod-like aluminum oxide embedded particles | |
| CN101164992B (en) | Method for preparing silicon carbide ceramic plasticized by sheet aluminum oxide particle and silicon carbide whisker combination | |
| CN101164973B (en) | Silicon carbide ceramic embedded with plasticizing substance | |
| CN101164998B (en) | Method for preparing silicon carbide ceramic composition containing silicon carbide whisker | |
| CN101164989B (en) | Method for preparing silicon carbide ceramic plasticized by rod-like aluminum oxide particle and carbon fibre combination | |
| CN101164975B (en) | Silicon carbide ceramic containing carbon fiber and sheet aluminum oxide embedded particles | |
| CN101165002B (en) | Method for preparing silicon carbide ceramic plasticized by three substances combination | |
| CN101164981B (en) | Silicon carbide ceramic containing carbon fiber and rod-like aluminum oxide embedded particles | |
| CN101164980B (en) | Silicon carbide ceramic containing silicon carbide wafer and rod-like aluminum oxide embedded particles | |
| CN101164972A (en) | Silicon carbide ceramic composition containing silicon carbide wafer | |
| CN101164979B (en) | Silicon carbide ceramic containing silicon carbide wafer and sheet aluminum oxide embedded particles | |
| CN101164985B (en) | Multi-component silicon carbide ceramic with insert including silicon carbide whisker | |
| CN101164974B (en) | Silicon carbide ceramic containing aluminum oxide dispersion embedded particles with multiple characters and appearances | |
| CN101164971B (en) | Multi-component silicon carbide ceramic with insert including fibre and whisker | |
| CN101164986B (en) | Multi-component silicon carbide ceramic with insert including silicon carbide wafer |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120523 Termination date: 20141016 |
|
| EXPY | Termination of patent right or utility model |