CN108251668A - A kind of new application of silica - Google Patents
A kind of new application of silica Download PDFInfo
- Publication number
- CN108251668A CN108251668A CN201810342928.6A CN201810342928A CN108251668A CN 108251668 A CN108251668 A CN 108251668A CN 201810342928 A CN201810342928 A CN 201810342928A CN 108251668 A CN108251668 A CN 108251668A
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- Prior art keywords
- silica
- alloy
- silicon
- alterant
- transcocrystallized
- 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.)
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title claims abstract description 121
- 239000000377 silicon dioxide Substances 0.000 title claims abstract description 61
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 67
- 239000010703 silicon Substances 0.000 claims abstract description 67
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 51
- 239000000956 alloy Substances 0.000 claims abstract description 51
- 229910021364 Al-Si alloy Inorganic materials 0.000 claims abstract description 27
- 239000000126 substance Substances 0.000 claims abstract description 24
- 230000005496 eutectics Effects 0.000 claims abstract description 20
- 229910018125 Al-Si Inorganic materials 0.000 claims abstract description 16
- 229910018520 Al—Si Inorganic materials 0.000 claims abstract description 16
- 239000002131 composite material Substances 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims description 19
- 239000000843 powder Substances 0.000 claims description 16
- 229910052782 aluminium Inorganic materials 0.000 claims description 15
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 15
- 239000004411 aluminium Substances 0.000 claims description 14
- 238000002156 mixing Methods 0.000 claims description 11
- 229910052681 coesite Inorganic materials 0.000 claims description 10
- 229910052906 cristobalite Inorganic materials 0.000 claims description 10
- 229910052682 stishovite Inorganic materials 0.000 claims description 10
- 229910052905 tridymite Inorganic materials 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 7
- 239000011812 mixed powder Substances 0.000 claims description 7
- 239000000178 monomer Substances 0.000 claims description 6
- 239000011521 glass Substances 0.000 claims description 3
- 239000010453 quartz Substances 0.000 claims description 3
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 3
- 150000002910 rare earth metals Chemical class 0.000 claims description 3
- 239000004576 sand Substances 0.000 claims description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims 2
- 239000004408 titanium dioxide Substances 0.000 claims 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract description 56
- 238000007670 refining Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 7
- 229910000676 Si alloy Inorganic materials 0.000 abstract description 5
- 238000005266 casting Methods 0.000 abstract description 4
- 229910052751 metal Inorganic materials 0.000 abstract description 4
- 239000002184 metal Substances 0.000 abstract description 4
- 239000000203 mixture Substances 0.000 abstract description 4
- CSDREXVUYHZDNP-UHFFFAOYSA-N alumanylidynesilicon Chemical compound [Al].[Si] CSDREXVUYHZDNP-UHFFFAOYSA-N 0.000 abstract description 3
- 229910000632 Alusil Inorganic materials 0.000 abstract description 2
- 239000002245 particle Substances 0.000 abstract description 2
- 239000013078 crystal Substances 0.000 description 5
- 238000003756 stirring Methods 0.000 description 5
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 238000003723 Smelting Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229910052698 phosphorus Inorganic materials 0.000 description 3
- 239000011574 phosphorus Substances 0.000 description 3
- 238000000498 ball milling Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 229910000789 Aluminium-silicon alloy Inorganic materials 0.000 description 1
- 241000186216 Corynebacterium Species 0.000 description 1
- 229910017888 Cu—P Inorganic materials 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 229910006367 Si—P Inorganic materials 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000002667 nucleating agent Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 238000009718 spray deposition Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—Alloys based on aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
- C22C21/04—Modified aluminium-silicon alloys
Abstract
The invention belongs to metal treatment arts, are related to a kind of new application of silica, and for refining the primary silicon in transcocrystallized Al-Si alloy, using silica, its mode as alterant is：First, using silica or the substance for containing silica as alterant；Second is that independent or composite inoculating is carried out to the primary silicon in transcocrystallized Al-Si alloy and Eutectic Silicon in Al-Si Cast Alloys together with other alterants；Using the silica of chemical composition and stable structure as the alterant of transcocrystallized Al-Si alloy, it prepares simple, it is environmental-friendly, it is of low cost, primary silicon grain refining effect is good after Metamorphism treatment, aluminum-silicon alloy finished products rate is high, primary silicon average-size can refine reach 50 microns hereinafter, pattern based on polygon particle；Aluminum-silicon alloy casting part machinability after modifying-refining is good；High temperature resistant, the wearability of alusil alloy product are high, good stability of the dimension.
Description
Technical field：
The invention belongs to metal treatment arts, are related to a kind of new application of silica, for refining hypereutectic aluminium
Primary silicon in silicon alloy.
Background technology：
Transcocrystallized Al-Si alloy has good wearability, and silicon is most important alloying member in transcocrystallized Al-Si alloy
Element, due to the presence of silicon, the mobility of alloy is improved, this casting character for allowing for alloy is further promoted, while silicon
Also reduce the coefficient of thermal expansion of material so that the hot cracking tendency of alloy is reduced, and substantially increases material in a high temperauture environment
Stability, but it is higher and higher with the content of silicon, and in crystalline phase tissue, primary silicon shows coarse bulk, and with apparent
Corner angle, this allow for originally arrange closely tissue isolated, reduce its good mechanical property；Eutectic Silicon in Al-Si Cast Alloys is also in short block
Shape or gill shape so that material cutting ability declines.
At present, the method for refinement silicon phase mainly has semi-solid state stirring, fluid atomizing method, spray deposition, smelting in suspension
Method, laser surface treating technology, Electric Pulse Treatment and alterant processing etc., wherein the first six kind method is by production scale and technique item
The limitation of part and fail large-scale application in actual production；And alterant processing method not substantially changes traditional production work
Skill, production scale is also unrestricted, thus obtains wide application.Rotten is exactly to add in alterant (again into metal liquid
Referred to as inovulant or nucleating agent), the made non-spontaneous forming core core largely disperseed is formed in molten metal, so as to obtain
Tiny casting crystal grain achievees the purpose that raising material property, and ideal alloy structure should be uniform on matrix after rotten
Ground is dispersed with the primary silicon phase of a certain number of fine particle shapes and the eutectic silicon of corynebacterium, and it is good to retain matrix in this way
Toughness, and primary silicon phase and the humidification of eutectic silicon can be given full play to.
The alterant of industrial most common transcocrystallized Al-Si alloy primary silicon surely belongs to phosphor alterative, specifically can be used red
In phosphorus, phosphorus-containing compound or phosphorus-containing alloy such as Cu-P intermediate alloys, Al-P intermediate alloys, Al-Si-P intermediate alloys, Al-Fe-P
Between alloy etc., can obtain good modification effect.It is more preferably and environmentally friendly due to intermediate alloy modification effect, so being studied
With the favor of the producer.The metamorphic mechanism of these alterants is all that chemical reaction Al+P → AlP, product AlP occur in molten aluminum
Crystal structure is identical with Si, belongs to diamond-type face-centered cubic lattice, and lattice constant is also very close toThe condition of heterogeneous forming core is met, so as to achieve the purpose that crystal grain thinning.
Certainly, it there are still such as reuniting when P is rotten, with the problems such as Eutectic Silicon in Al-Si Cast Alloys alterant Sr etc. reacts and effect declines, needs
Further investigate solution, the decline of modification effect mainly due to：(1) AlP reunions reduce effective forming core core amounts；(2) by
It is less than Al-Si alloys in the density of AlP, AlP aggregates can rise to bath surface, can be oxidized to form after ingress of air floating
Slag.Furthermore melt stirs the degree that can also increase aggregation；(3) due to 2AlP+3Sr → Al+Sr3P2, reaction therebetween makes
Respective modification effect is weakened.So exploitation novel high-performance alterant is still the important research content in the field.
Invention content：
It is an object of the invention to overcome shortcoming of the existing technology, a kind of new application of silica is provided, by two
Silica carries out micronization processes as alterant to the primary silicon of transcocrystallized Al-Si alloy.
In order to achieve the above-mentioned object of the invention, the present invention will contain SiO2Substance mixed by ball milling with aluminium powder, after tabletting
It is added to as alterant in the transcocrystallized Al-Si alloy under molten condition, plays the role of refining primary silicon and Eutectic Silicon in Al-Si Cast Alloys.
Using silica, its mode as alterant is the present invention：First, by silica or object containing silica
Matter is as alterant；Second is that the primary silicon in transcocrystallized Al-Si alloy and Eutectic Silicon in Al-Si Cast Alloys are carried out together with other alterants individually or
Composite inoculating.
Substance of the present invention containing silica includes pure SiO2, quartz, sand, glass etc. contain SiO2Mineral
Or mixture.
Other alterants of the present invention, which include AlP, ZnS, S, Na, Sr, rare earth etc., can refine primary silicon and Eutectic Silicon in Al-Si Cast Alloys
Substance and can generate or the material containing above-mentioned substance.
The present invention carries out micronization processes as alterant using silica monomer to the primary silicon of transcocrystallized Al-Si alloy
Process be：By SiO2Monomer or with aluminium powder after mixing, by tabletting be made intermediate form or directly will mixing
Powder adds in, then or is added in alloy melt as alterant in the form of intermediate alloy and refines primary silicon.
The present invention carries out the primary silicon of transcocrystallized Al-Si alloy as alterant using the substance for containing silica thin
Changing the process handled is：By the substance containing silica and aluminium powder after mixing by tabletting be made intermediate form or
It is directly to add in mixed-powder, then or is added in alloy melt as alterant in the form of intermediate alloy and refines primary crystal
Silicon.
The present invention by silica together with other alterants to the primary silicon in transcocrystallized Al-Si alloy and Eutectic Silicon in Al-Si Cast Alloys into
The process of row composite inoculating is：Silica or the substance containing silica are made up with aluminium powder of tabletting after mixing
The form of intermediate or directly mixed-powder is added in, then alloy melt is added to as alterant in the form of intermediate alloy
In, coordinate other alterants as composite inoculating to refine primary silicon and Eutectic Silicon in Al-Si Cast Alloys.
Compared with prior art, the present invention the present invention is using the silica of chemical composition and stable structure as hypereutectic aluminium
The alterant of silicon alloy is prepared simply, and environmental-friendly, of low cost, primary silicon grain refining effect is good after Metamorphism treatment, aluminium silicon
Alloy finished product rate is high, primary silicon average-size can refine reach 50 microns hereinafter, pattern based on polygon particle；Modifying-refining
Aluminum-silicon alloy casting part machinability afterwards is good；High temperature resistant, the wearability of alusil alloy product are high, good stability of the dimension.
Description of the drawings：
Fig. 1 is the metallographic structure figure of the transcocrystallized Al-Si alloy of 1 non-Metamorphism treatment of the embodiment of the present invention.
Fig. 2 is the metallographic structure figure of the transcocrystallized Al-Si alloy of 1 silica Metamorphism treatment of the embodiment of the present invention.
Fig. 3 is the metallographic structure figure after 2 composite inoculating of the embodiment of the present invention.
Specific embodiment：
The invention will be further described by way of example and in conjunction with the accompanying drawings.
The present embodiment will contain SiO2Substance mixed by ball milling with aluminium powder, alterant is used as after tabletting is added to melting
In transcocrystallized Al-Si alloy under state, play the role of refining primary silicon and Eutectic Silicon in Al-Si Cast Alloys.
Using silica, its mode as alterant is the present embodiment：First, by silica or contain silica
Substance is as alterant；Second is that the primary silicon in transcocrystallized Al-Si alloy and Eutectic Silicon in Al-Si Cast Alloys are carried out together with other alterants independent
Or composite inoculating.
Substance containing silica described in the present embodiment includes pure SiO2, quartz, sand, glass etc. contain SiO2Ore deposit
Object or mixture.
Other alterants described in the present embodiment, which include AlP, ZnS, S, Na, Sr, rare earth etc., can refine primary silicon and eutectic
It the substance of silicon and can generate or the material containing above-mentioned substance.
The present embodiment is carried out at refinement the primary silicon of transcocrystallized Al-Si alloy as alterant using silica monomer
The process of reason is：By SiO2Monomer or with aluminium powder after mixing, by tabletting be made intermediate form or directly will be mixed
It closes powder to add in, then or is added in alloy melt as alterant in the form of intermediate alloy and refines primary silicon.
The present embodiment uses the substance for containing silica to be carried out as alterant to the primary silicon of transcocrystallized Al-Si alloy
The process of micronization processes is：Substance containing silica and aluminium powder are made up to the form of intermediate of tabletting after mixing
Or directly mixed-powder is added in, then or is added in alloy melt at the beginning of refinement as alterant in the form of intermediate alloy
Crystal silicon.
The present embodiment is by silica to the primary silicon and Eutectic Silicon in Al-Si Cast Alloys in transcocrystallized Al-Si alloy together with other alterants
Carry out composite inoculating process be：By silica or substance containing silica with aluminium powder after mixing by tabletting system
Into intermediate form or directly mixed-powder is added in, then be added to alloy as alterant in the form of intermediate alloy and melt
In body, coordinate other alterants as composite inoculating to refine primary silicon and Eutectic Silicon in Al-Si Cast Alloys.
Embodiment 1：
The present embodiment is superheated to 900 DEG C in smelting furnace, keeps the temperature 15 points first by Al-25Siwt.% alloy meltings into liquid
Removing dross is taken off after clock and obtains melt, is then cooled to 830 DEG C, by purity>99.9%, the SiO of micro/nano level2Powder is by weight
0.3% is added in melt, stirs 1min；After standing rotten 10min, melt temperature is down to 800 DEG C, is finally cast to melt
It is preheated in 200 DEG C of punching block；After silica Metamorphism treatment, the primary silicon in transcocrystallized Al-Si alloy has obtained significantly
Refinement, Fig. 1 and Fig. 2 are not rotten respectively and silica Metamorphism treatment transcocrystallized Al-Si alloy (Si content 25wt.%)
Metallographic structure, as can be seen from Figure, using silica as primary silicon in alterant treated transcocrystallized Al-Si alloy
Average-size is less than 50um, mainly exists with polygon graininess.
Embodiment 2：
The present embodiment is by the SiO 2 powder prepared and aluminium powder in mass ratio 1:2 ratio mixing, in ball mill
It is tabletted after being uniformly mixed, it is air-cooled after 900 DEG C of sintering 4h, intermediate alloy is made.By Al-25Si wt.% alloys
Fusing is superheated to 900 DEG C in smelting furnace, and heat preservation takes off removing dross after 15 minutes and obtains melt, is then cooled to 830 DEG C, adds in
0.3wt.% intermediate alloys stir 1min, after keeping the temperature 10min, are cooled to 750 DEG C, add in 0.04wt.%Sr, stir 1min, quiet
800 DEG C are warming up to after putting 30min, is then cast；After composite inoculating, primary silicon and eutectic in Al-25Si wt.% alloys
Silicon is significantly refined, and Fig. 3 is the metallographic structure after composite inoculating, and as can be seen from the figure the size of primary silicon is fallen below
50 μm, Eutectic Silicon in Al-Si Cast Alloys is refined to fibrous or dotted by gill shape.
Claims (6)
1. a kind of new application of silica, it is characterised in that silica can be used as alterant, using silica its as
The mode of alterant is：First, using silica or the substance for containing silica as alterant；Second is that with other alterants
Independent or composite inoculating is carried out to the primary silicon in transcocrystallized Al-Si alloy and Eutectic Silicon in Al-Si Cast Alloys together.
2. the new application of silica according to claim 1, it is characterised in that the substance containing silica includes
Pure SiO2, quartz, sand, one or more of glass.
3. the new application of silica according to claim 1, it is characterised in that other alterants include AlP, ZnS,
S, it Na, Sr, rare earth and can generate or the material containing above-mentioned substance.
4. the new application of silica according to claim 1, it is characterised in that using silica monomer as alterant
The process that micronization processes are carried out to the primary silicon of transcocrystallized Al-Si alloy is：By SiO2Monomer or with aluminium powder after mixing, lead to
It crosses tabletting the form of intermediate is made or directly adds in mixed-powder, then is added in the form of intermediate alloy as alterant
Primary silicon is refined into alloy melt.
5. the new application of silica according to claim 1, it is characterised in that using the substance conduct for containing silica
The process that alterant carries out the primary silicon of transcocrystallized Al-Si alloy micronization processes is：By substance and aluminium powder containing silica
The form of intermediate is made by tabletting after mixing or directly adds in mixed-powder, then is made in the form of intermediate alloy
It is added in alloy melt for alterant and refines primary silicon.
6. the new application of silica according to claim 1, it is characterised in that by silica together with other alterants
The process that composite inoculating is carried out to the primary silicon in transcocrystallized Al-Si alloy and Eutectic Silicon in Al-Si Cast Alloys is：By silica or contain titanium dioxide
The substance of silicon is made the form of intermediate by tabletting after mixing with aluminium powder or directly adds in mixed-powder, then in
Between the form of alloy be added in alloy melt as alterant, coordinate other alterants as composite inoculating come refine primary silicon and
Eutectic Silicon in Al-Si Cast Alloys.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810342928.6A CN108251668A (en) | 2018-04-17 | 2018-04-17 | A kind of new application of silica |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810342928.6A CN108251668A (en) | 2018-04-17 | 2018-04-17 | A kind of new application of silica |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108251668A true CN108251668A (en) | 2018-07-06 |
Family
ID=62748412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810342928.6A Pending CN108251668A (en) | 2018-04-17 | 2018-04-17 | A kind of new application of silica |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108251668A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110306084A (en) * | 2019-08-06 | 2019-10-08 | 福建祥鑫股份有限公司 | A kind of high-strength low friction low expansion silumin and preparation method thereof |
| CN114873607A (en) * | 2022-03-28 | 2022-08-09 | 青岛科技大学 | New application of SAPO molecular sieve |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101058855A (en) * | 2007-05-31 | 2007-10-24 | 中国铝业股份有限公司 | Microstructure thinning process for hypereutectic aluminum alloy |
| CN102296196A (en) * | 2011-09-26 | 2011-12-28 | 江苏大学 | Cross-scale in-situ particle reinforced aluminum matrix composite material and preparation method thereof |
| CN102787248A (en) * | 2012-08-02 | 2012-11-21 | 中原工学院 | Method for refining primary silicon of hypereutectic Al-Si alloy |
-
2018
- 2018-04-17 CN CN201810342928.6A patent/CN108251668A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101058855A (en) * | 2007-05-31 | 2007-10-24 | 中国铝业股份有限公司 | Microstructure thinning process for hypereutectic aluminum alloy |
| CN102296196A (en) * | 2011-09-26 | 2011-12-28 | 江苏大学 | Cross-scale in-situ particle reinforced aluminum matrix composite material and preparation method thereof |
| CN102787248A (en) * | 2012-08-02 | 2012-11-21 | 中原工学院 | Method for refining primary silicon of hypereutectic Al-Si alloy |
Non-Patent Citations (1)
| Title |
|---|
| 黄世源 等: "SiO2/Al-7Si-0.3Mg铝基复合材料力学性能及显微结构的研究", 《铸造》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110306084A (en) * | 2019-08-06 | 2019-10-08 | 福建祥鑫股份有限公司 | A kind of high-strength low friction low expansion silumin and preparation method thereof |
| CN114873607A (en) * | 2022-03-28 | 2022-08-09 | 青岛科技大学 | New application of SAPO molecular sieve |
| CN114873607B (en) * | 2022-03-28 | 2024-01-02 | 青岛科技大学 | New application of SAPO molecular sieve |
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Application publication date: 20180706 |