RO99210B1 - Process for preparing self-supporting composite porous ceramic products, with densified surfaces - Google Patents
Process for preparing self-supporting composite porous ceramic products, with densified surfacesInfo
- Publication number
- RO99210B1 RO99210B1 RO129320A RO12932087A RO99210B1 RO 99210 B1 RO99210 B1 RO 99210B1 RO 129320 A RO129320 A RO 129320A RO 12932087 A RO12932087 A RO 12932087A RO 99210 B1 RO99210 B1 RO 99210B1
- Authority
- RO
- Romania
- Prior art keywords
- preform
- oxidation reaction
- densified
- volume
- porous ceramic
- Prior art date
Links
- 239000002131 composite material Substances 0.000 title abstract 3
- 239000000919 ceramic Substances 0.000 title abstract 2
- 238000004519 manufacturing process Methods 0.000 title 1
- 239000002184 metal Substances 0.000 abstract 4
- 238000007254 oxidation reaction Methods 0.000 abstract 4
- 239000007795 chemical reaction product Substances 0.000 abstract 2
- 239000000945 filler Substances 0.000 abstract 2
- 239000000047 product Substances 0.000 abstract 2
- 239000000470 constituent Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 239000007800 oxidant agent Substances 0.000 abstract 1
- 230000003647 oxidation Effects 0.000 abstract 1
- 230000001590 oxidative effect Effects 0.000 abstract 1
- 230000010076 replication Effects 0.000 abstract 1
- 238000007493 shaping process Methods 0.000 abstract 1
Landscapes
- Porous Artificial Stone Or Porous Ceramic Products (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
Abstract
Inventia se refera la un procedeu de obtinere a produselor ceramice compozite poroase, autoportante, cu suprafete densificate, prin fasonarea cu mijloace uzuale a unei preforme, în care metalul primar este distribuit prin materialul de umplutura într-un procent de volum în exces, suficient pentru a sigura, prin topire si oxidare, formarea produsului reactiei de oxidare, într-un volum suficient pentru umplerea volumului disponibil în numita preforma, generarea concomitenta a golurilor în preforma, partial prin replica inversa a geometriei distributiei metalului initial topit si consumat prin oxidare,continuarea reactiei de oxidare si, respectiv, transportarea metalului primar topit prin produsul reactiei de oxidare spre oxidant si spre o suprafata predeterminata a preformei, pentru obtinerea pe respectiva suprafata a unui strat dens lipsit de goluri si pentru asigurarea mentinerii, în produsele astfel densificate, a unei proportii de cel putin 5% constituenti metalici proveniti din metalul initial neoxidat, elemente dopante utilizate sau componenti redusi ai umpluturii.The invention relates to a process for obtaining porous, self-supporting, porous composite ceramic composite products with densified surfaces by shaping by common means a preform in which the primary metal is distributed through the filler material in an excess volume, sufficient for the oxidation reaction product is formed in a volume sufficient to fill the volume available in said preform, the simultaneous generation of the voids in the preform, partly by the inverse replication of the geometry of the initial molten metal distribution and consumed by oxidation, the continuation the oxidation reaction and the transport of the primary metal melted through the oxidation reaction product to the oxidant and to a predetermined surface of the preform to obtain on the surface a dense hollow layer and to maintain the densified products of a proportions of at least 5% of metallic constituents of the unoxidized initial metal, doping elements used or reduced filler components.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RO129320A RO99210B1 (en) | 1987-03-04 | 1987-03-04 | Process for preparing self-supporting composite porous ceramic products, with densified surfaces |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RO129320A RO99210B1 (en) | 1987-03-04 | 1987-03-04 | Process for preparing self-supporting composite porous ceramic products, with densified surfaces |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| RO99210B1 true RO99210B1 (en) | 1990-07-30 |
Family
ID=40907286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RO129320A RO99210B1 (en) | 1987-03-04 | 1987-03-04 | Process for preparing self-supporting composite porous ceramic products, with densified surfaces |
Country Status (1)
| Country | Link |
|---|---|
| RO (1) | RO99210B1 (en) |
-
1987
- 1987-03-04 RO RO129320A patent/RO99210B1/en unknown
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