CN108840687A - A kind of high-intensitive sintering process for matching grand new material - Google Patents
A kind of high-intensitive sintering process for matching grand new material Download PDFInfo
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Abstract
The present invention relates to match grand new material, and in particular to is related to a kind of high-intensitive sintering process for matching grand new material, which is made of following parts by weight raw material：200-250 parts of silicon nitrides, 20-30 parts of yttrium oxides, 30-40 parts of aluminium oxide, 10-15 parts of zirconium dioxides, 7-10 parts of vanadium iron, 9-12 parts of ferrotianiums, 8-13 parts of ferro-borons；Steps are as follows for the sintering process of the grand new material of the match：Raw material is sufficiently mixed by ball milling first, 800-1000ml alcohol is added and is uniformly mixed, is then evaporated under the conditions of certain temperature, is formed by mechanical-moulded mode, is sintered certain time in sintering furnace later, obtains high strength dense product；For the present invention by improving technique, so that product obtains high-densit product in the absence of stress, and shape of product is unrestricted, and can realize large-scale serial production, and the product strength of acquisition is greater than 900MPa；Suitable zirconium dioxide is added in the feed, suitable zirconium dioxide can inhibit growing up rapidly for interiors of products crystal grain, and intensity matches grand greatly improve relative to tradition.
Description
Technical field
The present invention relates to match grand new material, and in particular to a kind of high-intensitive sintering process for matching grand new material.
Background technique
Sai Long (Sialon) is a kind of solid solution that compositing range is very wide.The performance for matching grand product forms and is sintered cause with it
Close degree has substantial connection.Matching grand sintering processing has a reaction-sintered, hot pressed sintering and normal pressure-sintered etc..
It is a series of to refer to that silicon atom and the nitrogen-atoms part in silicon nitride are formed by by aluminium atom and oxygen atom displacement
The general name of solid solution can convert diversified forms.Reaction-sintered is the process of high-temperature solid phase reaction method synthesis β-sialon, β-
The synthesis of sialon is completed at the same time with sintering.Y2O3 is widely adopted as sintering aid, is acted on first is that producing in sintered body
Raw liquid phase is simultaneously dissolved into acceleration of sintering in crystal.
Chinese patent CN106565250A discloses a kind of high-intensitive, alkali resistance Sai Long-corundum composite fire material at present
Material and preparation method thereof, belongs to technical field of refractory materials.It is as made by following component by weight：Corundum in granules 50
~65 parts, 4~12 parts of silicon powder, 6~12 parts of aluminium powder, 2~5 parts of titanium dioxide powder, 4~6 parts of alumina powder, silicon dioxide powder 1~3
Part, 5~8 parts of 1~3 part of 4~6 parts of oxide-stabilizing zirconia powder, sericite, bonding agent for mixing yttrium and cerium.Sai Long-prepared by the present invention
Corundum composite refractory material has the advantages that intensity is high, and have the effect of alkali corrosion resistance compared with.
Chinese patent CN101798232B discloses a kind of Sai Long-silicon carbide-corundum composite refractory material preparation at present
Method.Raw material group becomes：Corundum 15-25%, silicon-carbide particle 45-55%, carbide fine powder 8-12% match grand 17-25%.Work
Skill process is that first silicon-carbide particle is added in planetary batch mixer to mix 4-6 minutes, and carbide fine powder, corundum, Sai Long is added
It remixes 8-12 minutes, after addition accounts for the bonding agent of total mass of raw material ratio 3-4%, 25-35 points is mixed in planetary batch mixer
Clock；It is pressed into firebrick billet；In 30-150 DEG C of at a temperature of drying；It is placed in nitriding furnace and is filled with high pure nitrogen laser heating liter
Temperature sintering, cooling and cooling.The present invention improves the service performance of refractory brick by matching grand combination mutually, and achieves and significantly make
Use effect.
But there is also intensity small, the low defect of consistency of the grand new material of match provided by the prior art.
Summary of the invention
In view of the above problems, the invention proposes a kind of high-intensitive sintering process for matching grand new material.The present invention
The technical solution of offer can make up that intensity present in the grand new material of existing match is small to a certain extent, and consistency is low to be lacked
It falls into.
The present invention is by improving technique, so that product obtains high-densit product, and product shape in the absence of stress
Shape is unrestricted, and can realize large-scale serial production, and the product strength of acquisition is greater than 900MPa.
In order to achieve the above purpose, it is achieved by the following technical programs：
A kind of high-intensitive sintering process for matching grand new material, steps are as follows：
(1) the high-intensitive raw material for matching grand new material by silicon nitride, yttrium oxide, aluminium oxide and zirconium dioxide, vanadium iron, ferrotianium,
Ferro-boron composition；
(2) silicon nitride, yttrium oxide, aluminium oxide and zirconium dioxide, vanadium iron, ferrotianium, ferro-boron are poured into ground and mixed in mortar
Uniformly, 800-1000ml alcohol wet ball grinding is added；
(3) mixed-powder after ball milling is placed in the vacuum oven under the conditions of certain temperature and is evaporated, by machinery at
Type mode forms, and is sintered certain time in sintering furnace later, obtains high strength dense product.
The new material is made of following parts by weight raw material：200-250 parts of silicon nitrides, 20-30 parts of yttrium oxides, 30-40 parts
Aluminium oxide, 10-15 part zirconium dioxide, 5-15 parts of vanadium iron, 7-13 parts of ferrotianiums, 6-14 parts of ferro-borons；
Preferably, which is made of following parts by weight raw material：210-230 parts of silicon nitrides, 22-25 parts of yttrium oxides,
35-38 parts of aluminium oxide, 11-13 parts of zirconium dioxides, 7-10 parts of vanadium iron, 9-12 parts of ferrotianiums, 8-13 parts of ferro-borons.
Preferably, which is made of following parts by weight raw material：210 parts of silicon nitrides, 24 parts of yttrium oxides, 36 parts of oxidations
Aluminium, 12 parts of zirconium dioxides, 9 parts of vanadium iron, 10 parts of ferrotianiums, 10 parts of ferro-borons.
Preferably, the evaporated temperature in the sintering process is 80 DEG C.
Preferably, the sintering temperature in the sintering process is 1700-1900 DEG C.
Preferably, the sintering time in the sintering process is 5-6h.
Using above-mentioned technical solution, beneficial effects of the present invention are as follows：
(1) present invention is by improving technique, so that product obtains high-densit product, and product in the absence of stress
Shape is unrestricted, and can realize large-scale serial production, and the product strength of acquisition is greater than 900MPa；
(2) suitable zirconium dioxide is added in the feed, suitable zirconium dioxide can inhibit the fast of interiors of products crystal grain
Speed is grown up, to obtain nano-silicon nitride product, intensity matches grand greatly improve relative to tradition；
(3) crystal grain can be refined by a small amount of vanadium iron, ferrotianium, ferro-boron being added, reduce pin hole in new material, it is loose the defects of.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention,
Technical scheme in the embodiment of the invention is clearly and completely described.Based on the embodiment of the present invention, the common skill in this field
Art personnel every other embodiment obtained without creative efforts belongs to the model that the present invention protects
It encloses.
Embodiment 1：
A kind of high-intensitive sintering process for matching grand new material, steps are as follows：
(1) the high-intensitive raw material for matching grand new material by silicon nitride, yttrium oxide, aluminium oxide and zirconium dioxide, vanadium iron, ferrotianium,
Ferro-boron composition；
(2) silicon nitride, yttrium oxide, aluminium oxide and zirconium dioxide, vanadium iron, ferrotianium, ferro-boron are poured into ground and mixed in mortar
Uniformly, 800ml alcohol wet ball grinding is added；
(3) mixed-powder after ball milling is placed in the vacuum oven under the conditions of 80 DEG C of temperature and is evaporated, by machinery at
Type mode forms, and is sintered 5h in 1900 DEG C of sintering furnace later, obtains high strength dense product.
Wherein, which is made of following parts by weight raw material：250 parts of silicon nitrides, 20 parts of yttrium oxides, 40 parts of oxidations
Aluminium, 10 parts of zirconium dioxides, 15 parts of vanadium iron, 7 parts of ferrotianiums, 14 parts of ferro-borons.
Embodiment 2：
A kind of high-intensitive sintering process for matching grand new material, steps are as follows：
(1) the high-intensitive raw material for matching grand new material by silicon nitride, yttrium oxide, aluminium oxide and zirconium dioxide, vanadium iron, ferrotianium,
Ferro-boron composition；
(2) silicon nitride, yttrium oxide, aluminium oxide and zirconium dioxide, vanadium iron, ferrotianium, ferro-boron are poured into ground and mixed in mortar
Uniformly, 1000ml alcohol wet ball grinding is added；
(3) mixed-powder after ball milling is placed in the vacuum oven under the conditions of 80 DEG C of temperature and is evaporated, by machinery at
Type mode forms, and is sintered 6h in 1700 DEG C of sintering furnace later, obtains high strength dense product.
Wherein, which is made of following parts by weight raw material：200 parts of silicon nitrides, 30 parts of yttrium oxides, 30 parts of oxidations
Aluminium, 15 parts of zirconium dioxides, 5 parts of vanadium iron, 13 parts of ferrotianiums, 6 parts of ferro-borons.
Embodiment 3：
A kind of high-intensitive sintering process for matching grand new material, steps are as follows：
(1) the high-intensitive raw material for matching grand new material by silicon nitride, yttrium oxide, aluminium oxide and zirconium dioxide, vanadium iron, ferrotianium,
Ferro-boron composition；
(2) silicon nitride, yttrium oxide, aluminium oxide and zirconium dioxide, vanadium iron, ferrotianium, ferro-boron are poured into ground and mixed in mortar
Uniformly, 900ml alcohol wet ball grinding is added；
(3) mixed-powder after ball milling is placed in the vacuum oven under the conditions of 80 DEG C of temperature and is evaporated, by machinery at
Type mode forms, and is sintered 6h in 1800 DEG C of sintering furnace later, obtains high strength dense product.
Wherein, which is made of following parts by weight raw material：210 parts of silicon nitrides, 25 parts of yttrium oxides, 35 parts of oxidations
Aluminium, 13 parts of zirconium dioxides, 7 parts of vanadium iron, 12 parts of ferrotianiums, 8 parts of ferro-borons.
Embodiment 4：
A kind of high-intensitive sintering process for matching grand new material, steps are as follows：
(1) the high-intensitive raw material for matching grand new material by silicon nitride, yttrium oxide, aluminium oxide and zirconium dioxide, vanadium iron, ferrotianium,
Ferro-boron composition；
(2) silicon nitride, yttrium oxide, aluminium oxide and zirconium dioxide, vanadium iron, ferrotianium, ferro-boron are poured into ground and mixed in mortar
Uniformly, 1000ml alcohol wet ball grinding is added；
(3) mixed-powder after ball milling is placed in the vacuum oven under the conditions of 80 DEG C of temperature and is evaporated, by machinery at
Type mode forms, and is sintered 5h in 1800 DEG C of sintering furnace later, obtains high strength dense product.
Wherein, which is made of following parts by weight raw material：230 parts of silicon nitrides, 22 parts of yttrium oxides, 38 parts of oxidations
Aluminium, 11 parts of zirconium dioxides, 10 parts of vanadium iron, 9 parts of ferrotianiums, 13 parts of ferro-borons.
Embodiment 5：
A kind of high-intensitive sintering process for matching grand new material, steps are as follows：
(1) the high-intensitive raw material for matching grand new material by silicon nitride, yttrium oxide, aluminium oxide and zirconium dioxide, vanadium iron, ferrotianium,
Ferro-boron composition；
(2) silicon nitride, yttrium oxide, aluminium oxide and zirconium dioxide, vanadium iron, ferrotianium, ferro-boron are poured into ground and mixed in mortar
Uniformly, 900ml alcohol wet ball grinding is added；
(3) mixed-powder after ball milling is placed in the vacuum oven under the conditions of 80 DEG C of temperature and is evaporated, by machinery at
Type mode forms, and is sintered 6h in 1700 DEG C of sintering furnace later, obtains high strength dense product.
Wherein, which is made of following parts by weight raw material：210 parts of silicon nitrides, 24 parts of yttrium oxides, 36 parts of oxidations
Aluminium, 12 parts of zirconium dioxides, 9 parts of vanadium iron, 10 parts of ferrotianiums, 10 parts of ferro-borons.
Sialon material in commercially available sialon material and the present invention is compared into performance test, test result is as follows：
| Bulk density g/cm3 | Intensity/Mpa | Consistency/% | |
| Embodiment 1 | 3.30 | 923 | 99.1 |
| Embodiment 2 | 3.29 | 924 | 99.4 |
| Embodiment 3 | 3.31 | 921 | 99.3 |
| Embodiment 4 | 3.29 | 925 | 99.2 |
| Embodiment 5 | 3.30 | 923 | 98.9 |
| Commercially available match is grand | 3.22 | 750 | 90.5 |
As seen from the above table, the grand new material properties of match in the present invention are superior to commercially available Sialon material, have outstanding
Substantive progress, is worthy to be popularized.
Above embodiments are only to illustrate the technical solution of type of the present invention, rather than its limitations；Although referring to aforementioned implementation
Type of the present invention is described in detail in example, those skilled in the art should understand that：It still can be to aforementioned each
Technical solution documented by embodiment is modified or equivalent replacement of some of the technical features；And these are modified
Or replacement, the spirit and scope for each embodiment technical solution of type of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (7)
1. a kind of high-intensitive sintering process for matching grand new material, which is characterized in that steps are as follows：
(1) the high-intensitive raw material for matching grand new material is by silicon nitride, yttrium oxide, aluminium oxide and zirconium dioxide, vanadium iron, ferrotianium, ferro-boron
Composition；
(2) that silicon nitride, yttrium oxide, aluminium oxide and zirconium dioxide, vanadium iron, ferrotianium, ferro-boron are poured into ground and mixed in mortar is uniform,
800-1000ml alcohol wet ball grinding is added；
(3) mixed-powder after ball milling is placed in the vacuum oven under the conditions of certain temperature and is evaporated, pass through mechanical-moulded side
Formula molding, is sintered certain time in sintering furnace later, obtains high strength dense product.
2. the high-intensitive sintering process for matching grand new material according to claim 1, which is characterized in that the new material is by as follows
Parts by weight raw material composition：200-250 parts of silicon nitrides, 20-30 parts of yttrium oxides, 30-40 parts of aluminium oxide, 10-15 parts of zirconium dioxides,
5-15 parts of vanadium iron, 7-13 parts of ferrotianiums, 6-14 parts of ferro-borons.
3. the high-intensitive sintering process for matching grand new material according to claim 1, which is characterized in that the new material is by as follows
Parts by weight raw material composition：210-230 parts of silicon nitrides, 22-25 parts of yttrium oxides, 35-38 parts of aluminium oxide, 11-13 parts of zirconium dioxides,
7-10 parts of vanadium iron, 9-12 parts of ferrotianiums, 8-13 parts of ferro-borons.
4. the high-intensitive sintering process for matching grand new material according to claim 1, which is characterized in that the new material is by as follows
Parts by weight raw material composition：210 parts of silicon nitrides, 24 parts of yttrium oxides, 36 parts of aluminium oxide, 12 parts of zirconium dioxides, 9 parts of vanadium iron, 10 parts
Ferrotianium, 10 parts of ferro-borons.
5. the high-intensitive sintering process for matching grand new material according to claim 1, which is characterized in that in the sintering process
Evaporated temperature be 80 DEG C.
6. the high-intensitive sintering process for matching grand new material according to claim 1, which is characterized in that in the sintering process
Sintering in-furnace temperature be 1700-1900 DEG C.
7. the high-intensitive sintering process for matching grand new material according to claim 1, which is characterized in that in the sintering process
Sintering time be 5-6h.
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Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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