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 surfaces

Info

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
Application number
RO129320A
Other languages
Romanian (ro)
Inventor
K. Dwivedi Ratnesh
Original Assignee
Denxide Technology Company Lp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Denxide Technology Company Lp filed Critical Denxide Technology Company Lp
Priority to RO129320A priority Critical patent/RO99210B1/en
Publication of RO99210B1 publication Critical patent/RO99210B1/en

Links

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.

RO129320A 1987-03-04 1987-03-04 Process for preparing self-supporting composite porous ceramic products, with densified surfaces RO99210B1 (en)

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)

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