GB814406A - Process for the grain refinement of primary silicon in eutectic and in hyper-eutectic aluminium silicon alloys - Google Patents
Process for the grain refinement of primary silicon in eutectic and in hyper-eutectic aluminium silicon alloysInfo
- Publication number
- GB814406A GB814406A GB1683856A GB1683856A GB814406A GB 814406 A GB814406 A GB 814406A GB 1683856 A GB1683856 A GB 1683856A GB 1683856 A GB1683856 A GB 1683856A GB 814406 A GB814406 A GB 814406A
- Authority
- GB
- United Kingdom
- Prior art keywords
- eutectic
- hyper
- silicon
- primary
- grain refinement
- 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
Links
- 230000005496 eutectics Effects 0.000 title abstract 2
- 229910000789 Aluminium-silicon alloy Inorganic materials 0.000 title 1
- 229910052710 silicon Inorganic materials 0.000 title 1
- 239000010703 silicon Substances 0.000 title 1
- 239000000203 mixture Substances 0.000 abstract 3
- 235000021317 phosphate Nutrition 0.000 abstract 3
- 125000004429 atoms Chemical group 0.000 abstract 2
- 150000003013 phosphoric acid derivatives Chemical class 0.000 abstract 2
- 229910018125 Al-Si Inorganic materials 0.000 abstract 1
- 229910021364 Al-Si alloy Inorganic materials 0.000 abstract 1
- ILRRQNADMUWWFW-UHFFFAOYSA-K Aluminium phosphate Chemical compound O1[Al]2OP1(=O)O2 ILRRQNADMUWWFW-UHFFFAOYSA-K 0.000 abstract 1
- 229910018520 Al—Si Inorganic materials 0.000 abstract 1
- -1 Mg2P2O7 Chemical compound 0.000 abstract 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K [O-]P([O-])([O-])=O Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 abstract 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 abstract 1
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 239000003575 carbonaceous material Substances 0.000 abstract 1
- 230000000875 corresponding Effects 0.000 abstract 1
- 230000004907 flux Effects 0.000 abstract 1
- 238000005755 formation reaction Methods 0.000 abstract 1
- 239000008188 pellet Substances 0.000 abstract 1
- 239000010452 phosphate Substances 0.000 abstract 1
- 239000000843 powder Substances 0.000 abstract 1
- YIVJSMIYMAOVSJ-UHFFFAOYSA-N sodium;phosphono dihydrogen phosphate Chemical compound [Na+].OP(O)(=O)OP(O)(O)=O YIVJSMIYMAOVSJ-UHFFFAOYSA-N 0.000 abstract 1
- 239000007787 solid Substances 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
Classifications
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
Abstract
The primary Si in eutectic or hypereutectic Al-Si alloys is grain-refined by adding to an Al-Si melt a mixture of solid substances comprising one or more phosphates and Al and/or Mg. The phosphates are preferably Na-free, or contain less than three atoms of Na per atom of P, and may be AlPO4, Mg2P2O7, Na4P2O7 or NaPO3. The mixture preferably comprises a phosphate and Al powder in stoichiometric proportions corresponding to the formation of AlP, and it may be compressed into pellets or packaged in Al containers. Fluxes and small amounts of C or carbonaceous materials may be added to the mixture.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB814406A true GB814406A (en) | 1959-06-03 |
Family
ID=1732619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1683856A Expired GB814406A (en) | 1956-05-31 | Process for the grain refinement of primary silicon in eutectic and in hyper-eutectic aluminium silicon alloys |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB814406A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3122460A (en) * | 1959-10-28 | 1964-02-25 | Nippon Electric Co | Method of producing improved alloyed silicon-aluminum p-n junctions |
-
1956
- 1956-05-31 GB GB1683856A patent/GB814406A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3122460A (en) * | 1959-10-28 | 1964-02-25 | Nippon Electric Co | Method of producing improved alloyed silicon-aluminum p-n junctions |
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