CN105565812A - Preparation method of Sialon and SiC combined porous material - Google Patents

Preparation method of Sialon and SiC combined porous material Download PDF

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CN105565812A
CN105565812A CN201510945685.1A CN201510945685A CN105565812A CN 105565812 A CN105565812 A CN 105565812A CN 201510945685 A CN201510945685 A CN 201510945685A CN 105565812 A CN105565812 A CN 105565812A
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sic
powder
porous material
sialon
conjunction
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CN105565812B (en
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张欣
何建
李华臣
陈建章
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Hunan University of Science and Technology
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Abstract

The invention discloses a preparation method of a Sialon and SiC combined porous material. The preparation method comprises: grinding 60-80 parts by weight of SiC powder, 10-20 parts by weight of active aluminum oxide powder and 5-15 parts by weight of metal silicon powder for 3 hours in a ball grinding mill to prepare raw material powder; stirring 40-60 parts by weight of a blank reinforcing agent, 0.1-1.0 part by mass of a dispersion coagulation adjusting agent and 0.1-1.0 part by mass of a silane coupling agent with the raw material powder uniformly to prepare a raw material slurry; carrying out high-speed stirring on 25 parts by weight of a 1wt% triterpenoid saponin plant foaming agent solution to prepare foams; stirring the foams and the raw material slurry uniformly to prepare a foam slurry; and carrying out injection molding and drying on the foam slurry, and carrying out nitridation at 1400 DEG C to prepare the Sialon and SiC combined porous material, wherein the particle size of the SiC powder is less than 325 meshes, the particle size of the metal Si powder is less than 200 meshes, the active aluminum oxide powder is rho-Al2O3, the blank reinforcing agent is one of or a compound aqueous solution of polyvinyl alcohol, calcium lignosulphonate and starch, and the dispersion coagulation adjusting agent is one of or a combination of sodium carbonate, sodium hexametaphosphate, sodium tripolyphosphate and lithium carbonate.

Description

A kind of Sialon is in conjunction with the preparation method of SiC porous material
Technical field
The invention belongs to porous material technical field, be specifically related to the preparation method of a kind of Sialon in conjunction with SiC porous material.
Background technology
SiC material mechanical property is excellent, and chemical stability is good, corrosion-resistant, anti-erosion, good thermal shock stability, is very important high-temperature structural material.The Si-C key of SiC is the extremely strong covalent linkage of bonding force, ordinary method pole hard-to-sinter, usual interpolation sintering aid or employing reaction sintering method prepare SiC material, therefrom silicate in conjunction with SiC, oxide compound in conjunction with SiC, mullite bonded SiC, Si3N4 in conjunction with various SiC goods such as SiC, wherein Sialon is best in conjunction with SiC performance, hot strength is high, and thermal-shock resistance is good, and oxidation-resistance, resistance to melt and soda acid aggressiveness are strong.
SiC porous material void content is high, good penetrability, and sound isolating and heat insulating performance is good, in industry and high-tech area extensive application, throughout multiple fields such as metallurgy, chemical industry, electronics, the energy, aviation, environmental protection, biologies.Such as, can be used as high temperature gas cleaning device, solid particulate and filter for molten metal, heat exchanger, sensor, heat preserving and insulating material, and the support of the catalyst etc. of vehicle exhaust.
The preparation method of porous material has interpolation pore-forming material method, Polymeric sponge method (transfer printing) and foaming etc.Preparation about SiC porous material has some research papers and patent, as:
Periodical " silicate journal " the 34th volume the 2nd phase in 2004 the 107th page to the 112nd page discloses the article of " preparation of metallic filter high-performance SiC foam pottery " that Liu Yan etc. writes, with Al2O3, wilkinite and silicon sol for sintering aid, polyurethane foam is template, the SiC powder that D50 is respectively 15.8 μm and 7.4 μm is raw material, obtains through 2 hangings the SiC foam pottery that bending strength reaches 2.87MPa, mean pore size is about 3mm, heat-shock resistance is good.
Periodical " Chinese pottery industry " the 20th volume the 1st phase in 2013 the 9th page to the 11st page discloses the paper of " starch is that pore-forming material prepares SiC porous material " that Guo Xingzhong etc. writes, report with micron SiC is matrix, aluminum oxide and yttrium oxide are sintering aid, starch is pore-forming material, adopts pressureless sintering technology to prepare SiC porous material.
" high-temperature dust removal composite SiC porous material preparation and property research " (Bai Chengying, University Of Hainan's master thesis, 2014), utilize reaction in－situ combination technology to prepare respectively and grind the silicon-dioxide that made internal disorder or usurp, mullite, trichroite in conjunction with SiC porous composite ceramics.
Patent (publication number: CN103058708A) reports a kind of preparation method of lower thermal conductivity silicon nitride bonded silicon SiC porous material, and its preparation technology is: 1) by SiC fine powder, water, dispersion agent and be used for the monomer of gel casting forming, linking agent ball milling is mixed to get uniform slurry; 2) add appropriate whipping agent in the slurry, slurry mechanical stirring is obtained foamed slurry, in foamed slurry, add appropriate initiator and catalyzer successively, and Quick pouring is in mould; 3) after slurry curing, the demoulding obtains base substrate, and base substrate is successively dry in climatic chamber and a conventional oven; 4) dried base substrate first carries out binder removal in air atmosphere stove, then sinters in nitrogen atmosphere stove, finally obtains Si3N4 in conjunction with SiC porous material, can be used for the peripheral lagging material of aluminium cell.
But, there is not yet so far and report in conjunction with the research of SiC porous material about Sialon.
Summary of the invention
The present invention is the preparation method of a kind of Sialon in conjunction with SiC porous material, and technique is simple, and easy to operate, obtained Sialon (is not more than 0.5g/cm in conjunction with SiC porous material volume density is little 3), thermal conductivity low (thermal conductivity of 1000 DEG C is not more than 0.25w/ (mk)), pore is spherical in shape, and independent, closed state, be evenly distributed, size is 0.5 ~ 1mm about, is mainly used in the heat insulating of high temperature and aggressive atmosphere.
For achieving the above object, the technical solution adopted in the present invention is: with the SiC powder of 65 ~ 85 mass parts, the metal Si powder of 5 ~ 15 mass parts and the active oxidation aluminium powder of 10 ~ 20 mass parts are raw material, corundum ball is grinding medium ball milling 1 ~ 5h, mix, obtained material powder, then the base substrate toughener of 40 ~ 60 mass parts is added, the dispersion adjustable solidification agent of 0.1 ~ 1.0 mass parts, the silane coupling agent of 0.1 ~ 1.0 mass parts, stir, the raw material slurry that obtained viscosity is moderate, foams mix obtained with triterpenoid saponin plant whipping agent is again even, obtained sic foam slurry, through casting, dry, 1400 DEG C of nitrogenize in industry nitriding furnace, obtained Sialon is in conjunction with SiC porous material.
In technique scheme: the carborundum content of SiC powder is greater than 97%, granularity is 325 orders and following, and metal Si Powder Particle Size is 200 orders and following, and active oxidation aluminium powder is ρ-Al 2o 3, base substrate toughener is the aqueous solution of a kind of or its compound in the polyvinyl alcohol of mass concentration 1 ~ 5%, calcium lignin sulphonate and starch, and dispersion adjustable solidification agent is one in sodium carbonate, Sodium hexametaphosphate 99, tripoly phosphate sodium STPP, Quilonum Retard or its compound.
Adopt technique scheme, active oxidation aluminium powder (ρ-Al 2o 3) form hydrate after aquation, and make foamed slurry multiviscosisty play solid bubble effect, and give porous body certain dry tenacity, about 500 DEG C decomposition of hydrate generate extremely fine aluminium oxide particles; Metallic silicon power nitrogenize in nitrogen atmosphere generates extremely fine silicon nitride particles, and atomic thin silicon nitride particles and aluminium oxide particles at high temperature react and generate Sialon, are combined by silicon-carbide particle, and obtained Sialon is in conjunction with SiC porous material thus.Add dispersion adjustable solidification agent dispersion carborundum particle and regulate ρ-Al 2o 3heat evolution velocity, add silane coupling agent and improve the interfacial combined function of foam and SiC particle.For strengthening the baked strength of porous body, adopt mass concentration be the polyvinyl alcohol of 1 ~ 5%, a kind of in calcium lignin sulphonate and starch or its compound the aqueous solution as base substrate toughener.Regulate foam volume can obtain volume density and be low to moderate 0.4g/cm 3sialon in conjunction with SiC porous material.
After measured, the volume density that prepared by the present invention is 0.5g/cm 3sialon in conjunction with SiC porous material, cold crushing strength 1.5MPa, 1000 DEG C of thermal conductivitys are 0.243w/ (m.k), and XRD interpretation of result shows, principal crystalline phase is α-SiC and beta-Sialon.
Embodiment
Below in conjunction with specific examples, the present invention is described in further detail.
The present invention by the restriction of following embodiment, can not determine concrete embodiment according to technical scheme of the present invention and practical situation.
Embodiment 1:
A kind of Sialon is in conjunction with the preparation method of SiC porous material.With
A, take 80 weight part 325 order SiC powder, 12.5 weight part ρ-Al 2o 3with 7.5 weight part 200 order metal Si powder, join the grinding in ball grinder 3h that corundum ball is grinding medium, obtained material powder, for subsequent use.
B, take the base substrate toughener that 45 ~ 50 weight part mass concentrations are 2%, 0.1 ~ 0.4 weight part dispersion adjustable solidification agent, 0.2 ~ 0.5 weight part silane resin acceptor kh-550, joins step A in mixed uniformly material powder, fully stirs the raw material slurry that obtained viscosity is moderate.
C, to take 25 weight part mass concentrations be the foaming agent solution of 1%, uses homogenizer with 2500r.p.m mechanical stirring foaming agent solution 3min, obtained foam;
D, appropriate foam is joined in raw material slurry, stir, make slurry even with foams mix, obtain foamed slurry.
E, by foamed slurry injection molding, leave standstill one day under air ambient, make foamed slurry curing molding, obtained wet base.
F, wet base to be put into baking oven dry, and room temperature is slowly dry to 60 DEG C, and heat-up rate is not more than 2.5 DEG C/h, and the demoulding after 60 DEG C of dry 24h, then rises to 110 DEG C with the speed of 5 DEG C/h, insulation 24h, obtained dry body.
G, dry body be nitrogenize in industrial nitriding furnace at 1400 DEG C, and obtained volume density is about 0.6g/cm thus 3sialon in conjunction with SiC porous material.
Embodiment 2:
A kind of Sialon is in conjunction with the preparation method of SiC porous material.With
A, take the ρ-Al of 75 weight part 325 order SiC powder, 15 weight parts 2o 3with 10 weight part 200 order metal Si powder, join the grinding in ball grinder 3h that corundum ball is grinding medium, obtained material powder, for subsequent use.
B, take the base substrate toughener that 50 ~ 55 weight part mass concentrations are 2%, 0.1 ~ 0.4 weight part dispersion adjustable solidification agent, 0.2 ~ 0.5 weight part silane resin acceptor kh-550, joins step A in mixed uniformly material powder, fully stirs the raw material slurry that preparation viscosity is moderate.
C, to take 25 weight part mass concentrations be the foaming agent solution of 1%, uses homogenizer with the rotating speed mechanical stirring foaming agent solution 3min of 2500r.p.m, obtained foam.
D, appropriate foam is joined in raw material slurry, stir, make slurry even with foams mix, obtain foamed slurry.
E, by foamed slurry injection molding, leave standstill one day under air ambient, make foamed slurry curing molding, obtained wet base.
F, wet base to be put into baking oven dry, and room temperature is slowly dry to 60 DEG C, and heat-up rate is not more than 2.5 DEG C/h, and the demoulding after 60 DEG C of dry 24h, then rises to 110 DEG C with the speed of 5 DEG C/h, insulation 24h, obtained dry body.
G, dry body be nitrogenize in industrial nitriding furnace at 1400 DEG C, and obtained volume density is about 0.5g/cm thus 3sialon in conjunction with SiC porous material.
Embodiment 3:
A kind of Sialon is in conjunction with the preparation method of SiC porous material.With
A, take 70 weight part d 50the SiC powder of=1.5 μm, the ρ-Al of 20 weight parts 2o 3with 10 weight part 325 order metal Si powder, join the grinding in ball grinder 3h that corundum ball is grinding medium, obtained material powder, for subsequent use.
B, take the base substrate toughener that 55 ~ 60 weight part mass concentrations are 2%, 0.2 ~ 0.5 weight part dispersion adjustable solidification agent, 0.2 ~ 0.5 weight part silane resin acceptor kh-550, joins step A in mixed uniformly material powder, fully stirs the raw material slurry that preparation viscosity is moderate.
C, to take 25 weight part mass concentrations be the foaming agent solution of 1%, uses homogenizer with the rotating speed mechanical stirring foaming agent solution 3min of 2500r.p.m, obtained foam.
D, appropriate foam is joined in raw material slurry, stir, make slurry even with foams mix, obtain foamed slurry.
E, by foamed slurry injection molding, leave standstill one day under air ambient, make foamed slurry curing molding, obtained wet base.
F, wet base to be put into baking oven dry, and room temperature is slowly dry to 60 DEG C, and heat-up rate is not more than 2.5 DEG C/h, and the demoulding after 60 DEG C of dry 24h, then rises to 110 DEG C with the speed of 5 DEG C/h, insulation 24h, obtained dry body.
G, dry body be nitrogenize in industrial nitriding furnace at 1400 DEG C, and obtained volume density is about 0.4g/cm thus 3sialon in conjunction with SiC porous material.
Above-described embodiment has stronger adaptability and preferably implementation result, concrete implement in can increase and decrease non-essential technical characteristic according to actual needs, meet the demand of different situations.
The contrast of above-described embodiment and prior art is as follows:
The present invention uses high pure raw material, does not introduce objectionable constituent, and the high-temperature behavior of material is guaranteed.ρ-Al 2o 3have very high activity, very easily aquation forms the adhesive bond of some strength, utilizes this characteristic cured foam slurry.
ρ-Al in the present invention 2o 3hydrated product about 500 DEG C decompose generate atomic thin aluminium oxide particles, the atomic thin silicon nitride particles formed with silicon powder nitride is at high temperature reacted and is generated Sialon, is combined by silicon-carbide particle, thus obtain Sialon in conjunction with SiC porous material.
The present invention uses foam to originate as pore, by changing foam add-on, more accurately can regulate the volume density of goods, void content and aperture.
Whole technological process of the present invention can not, to environment, be a kind of eco-friendly technique, and simple to operate.
The above; be only the present invention's preferably specific embodiments, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claims.

Claims (8)

1. a Sialon is in conjunction with the preparation method of SiC porous material, it is characterized in that: with the SiC powder of 65 ~ 85 mass parts, the metal Si powder of 5 ~ 15 mass parts and the active oxidation aluminium powder of 10 ~ 20 mass parts are raw material, corundum ball is grinding medium ball milling 1 ~ 5h, mix obtained material powder, then 40 ~ 60 mass parts base substrate tougheners are added, 0.1 ~ 1.0 mass parts dispersion adjustable solidification agent, 0.1 ~ 1.0 mass parts silane coupling agent, the raw material slurry that the obtained viscosity that stirs is moderate, foams mix obtained with triterpenoid saponin plant whipping agent is again obtained sic foam slurry evenly, through casting, dry, in industry nitriding furnace, 1400 DEG C of nitrogenize obtain Sialon in conjunction with SiC porous material.
2. Sialon according to claim 1 is in conjunction with the preparation method of SiC porous material, it is characterized in that: described SiC powder carborundum content is greater than 97%, and granularity is 325 orders and following.
3. Sialon according to claim 1 is in conjunction with the preparation method of SiC porous material, it is characterized in that: described metal Si Powder Particle Size is 200 orders and following.
4. Sialon according to claim 1 is in conjunction with the preparation method of SiC porous material, it is characterized in that: described active oxidation aluminium powder is ρ-Al2O3.
5. Sialon according to claim 1 is in conjunction with the preparation method of SiC porous material, it is characterized in that: described base substrate toughener is the aqueous solution of a kind of or its compound in the polyvinyl alcohol of mass concentration 1 ~ 5%, calcium lignin sulphonate and starch.
6. Sialon according to claim 1 is in conjunction with the preparation method of SiC porous material, it is characterized in that: described dispersion adjustable solidification agent is one in sodium carbonate, Sodium hexametaphosphate 99, tripoly phosphate sodium STPP, Quilonum Retard or its compound.
7. Sialon according to claim 1 is in conjunction with the preparation method of SiC porous material, it is characterized in that: described silane coupling agent is KH-550.
8. Sialon is in conjunction with a SiC porous material, by the Sialon according to any one of claim 1 ~ 7 in conjunction with SiC porous material preparation method prepared by obtain.
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107010964A (en) * 2017-05-18 2017-08-04 清华大学 It is a kind of to strengthen the method for ultralight foamed ceramics blank strength
CN109942301A (en) * 2019-04-22 2019-06-28 中钢集团洛阳耐火材料研究院有限公司 A kind of preparation method of low-cost silicon nitride ceramic
CN110183232A (en) * 2019-05-23 2019-08-30 荆州市友联铝材设备有限公司 A kind of pressure resistance foam ceramic material and its preparation method and application
CN114671702A (en) * 2022-04-02 2022-06-28 郑州大学 Porous sialon ceramic filter and preparation method thereof
CN115504791A (en) * 2022-08-12 2022-12-23 河南好运祥耐材有限公司 O' -SiAlON-SiC prefabricated part with high oxidation resistance and preparation method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1793038A (en) * 2005-11-18 2006-06-28 清华大学 Process for sintering Sialong binding silicon carbide refractory by microwave tech.
CN101200373A (en) * 2007-12-11 2008-06-18 中国科学院上海硅酸盐研究所 Preparation method of silicon carbide ceramic body for rubber mold
CN101503296A (en) * 2009-03-26 2009-08-12 洛阳北苑特种陶瓷有限公司 Silicon carbide ceramic agitator head
CN104402517A (en) * 2014-10-27 2015-03-11 武汉科技大学 Al2O3-SiC foam ceramic and preparation method thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1793038A (en) * 2005-11-18 2006-06-28 清华大学 Process for sintering Sialong binding silicon carbide refractory by microwave tech.
CN101200373A (en) * 2007-12-11 2008-06-18 中国科学院上海硅酸盐研究所 Preparation method of silicon carbide ceramic body for rubber mold
CN101503296A (en) * 2009-03-26 2009-08-12 洛阳北苑特种陶瓷有限公司 Silicon carbide ceramic agitator head
CN104402517A (en) * 2014-10-27 2015-03-11 武汉科技大学 Al2O3-SiC foam ceramic and preparation method thereof

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107010964A (en) * 2017-05-18 2017-08-04 清华大学 It is a kind of to strengthen the method for ultralight foamed ceramics blank strength
CN107010964B (en) * 2017-05-18 2020-01-21 清华大学 Method for enhancing strength of ultra-light foamed ceramic body
CN109942301A (en) * 2019-04-22 2019-06-28 中钢集团洛阳耐火材料研究院有限公司 A kind of preparation method of low-cost silicon nitride ceramic
CN110183232A (en) * 2019-05-23 2019-08-30 荆州市友联铝材设备有限公司 A kind of pressure resistance foam ceramic material and its preparation method and application
CN110183232B (en) * 2019-05-23 2022-03-18 荆州市友联铝材设备有限公司 Pressure-resistant foam ceramic material and preparation method and application thereof
CN114671702A (en) * 2022-04-02 2022-06-28 郑州大学 Porous sialon ceramic filter and preparation method thereof
CN115504791A (en) * 2022-08-12 2022-12-23 河南好运祥耐材有限公司 O' -SiAlON-SiC prefabricated part with high oxidation resistance and preparation method thereof

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