SI2647611T1 - Visokoobstojni spoji med keramičnimi izdelki in postopek izdelave spoja - Google Patents

Visokoobstojni spoji med keramičnimi izdelki in postopek izdelave spoja Download PDF

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Publication number
SI2647611T1
SI2647611T1 SI201330924T SI201330924T SI2647611T1 SI 2647611 T1 SI2647611 T1 SI 2647611T1 SI 201330924 T SI201330924 T SI 201330924T SI 201330924 T SI201330924 T SI 201330924T SI 2647611 T1 SI2647611 T1 SI 2647611T1
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Slovenia
Prior art keywords
ceramic
matrix
inclusions
polymorph
products
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SI201330924T
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English (en)
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Hesham Ezzat Khalifa
Christian Peter Deck
Christina Allyssa Back
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General Atomics
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Publication of SI2647611T1 publication Critical patent/SI2647611T1/sl

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    • C04B35/565—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides based on silicon carbide
    • C04B35/571—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides based on silicon carbide obtained from Si-containing polymer precursors or organosilicon monomers
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    • C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/30—Composition of layers of ceramic laminates or of ceramic or metallic articles to be joined by heating, e.g. Si substrates
    • C04B2237/32—Ceramic
    • C04B2237/36—Non-oxidic
    • C04B2237/365—Silicon carbide
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/30—Composition of layers of ceramic laminates or of ceramic or metallic articles to be joined by heating, e.g. Si substrates
    • C04B2237/32—Ceramic
    • C04B2237/36—Non-oxidic
    • C04B2237/368—Silicon nitride
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/50—Processing aspects relating to ceramic laminates or to the joining of ceramic articles with other articles by heating
    • C04B2237/70—Forming laminates or joined articles comprising layers of a specific, unusual thickness
    • C04B2237/708—Forming laminates or joined articles comprising layers of a specific, unusual thickness of one or more of the interlayers
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/50—Processing aspects relating to ceramic laminates or to the joining of ceramic articles with other articles by heating
    • C04B2237/88—Joining of two substrates, where a substantial part of the joining material is present outside of the joint, leading to an outside joining of the joint
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
    • C04B35/56—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides
    • C04B35/565—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides based on silicon carbide
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/47—Molded joint
    • Y10T403/477—Fusion bond, e.g., weld, etc.

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  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
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  • Organic Chemistry (AREA)
  • Structural Engineering (AREA)
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  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Ceramic Products (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Chemical Vapour Deposition (AREA)

Claims (13)

  1. Visokoobstojni spoji med keramičnimi izdelki in postopek izdelave spoja Patentni zahtevki
    1. Spoj jedrske kvalitete ("nuclear grade") med prvim in drugim keramičnim izdelkom, od katerih vsak obsega keramiko, pri čemer spoj jedrske kvalitete obsega: matriks, ki obsega keramiko, in ki se razteza med prvim in drugim izdelkom; množico vključkov, ki obsegajo keramiko, in ki so porazdeljeni preko matriksa; in v bistvu neprepustno tesnilno plast, ki obsega keramiko, ki je ustrezno razmeščena na prvem in drugem keramičnem izdelku, in matriks; kjer matriks izvira iz pred-keramične polimerne suspenzije in je v bistvu neprepustna tesnilna plast izvedena iz kemične parne infiltracije (CVI, "Chemical vapor infiltration"), kjer se kemična parna infiltracija izvede po tvorbi matriksa; kjer je keramika β-SiC in kjer matriks, množica vključkov in v bistvu neprepustna tesnilna plast vsak obsega več kot 99,0 mas. % β-SiC.
  2. 2. Spoj jedrske kvalitete po zahtevku 1, kjer prvi in drugi izdelek vsak obsega keramični polimorf, pri čemer matriks obsega keramični polimorf; množica vključkov obsega keramični polimorf; in v bistvu neprepustna tesnilna plast obsega keramični polimorf.
  3. 3. Spoj jedrske kvalitete po zahtevku 2, kjer matriks, množica vključkov in v bistvu neprepustna tesnilna plast vsak sestoji v bistvu iz enakega keramičnega polimorfa, ali kjer prvi in drugi izdelek vsak sestoji v bistvu iz enakega keramičnega polimorfa.
  4. 4. Spoj jedrske kvalitete po katerem koli od predhodnih zahtevkov, kjer se v bistvu neprepustna tesnila plast delno ali popolnoma razteza v matriks.
  5. 5. Spoj jedrske kvalitete po katerem koli od predhodnih zahtevkov, kjer ima spoj jedrske kvalitete v bistvu enako sestavo, kot vsak od prvega in drugega izdelka, ali kjer ima spoj jedrske kvalitete v bistvu enako mehansko trdnost kot vsak od prvega in drugega izdelka, ali kjer ima spoj jedrske kvalitete v bistvu enak toplotni razteznostni koeficient kot vsak od prvega in drugega izdelka, ali kjer ima spoj jedrske kvalitete karakteristično navidezno strižno trdnost vsaj 1 MPa.
  6. 6. Spoj jedrske kvalitete po zahtevku 1, kjer matriks, množica vključkov in v bistvu neprepustna tesnilna plast vsak obsega več kot 99,7 mas. % β-SiC.
  7. 7. Postopek priprave spoja jedrske kvalitete med prvim in drugim izdelkom, od katerih vsak obsega keramični polimorf, pri čemer postopek obsega: (a) pripravo suspenzije, ki obsega pred-keramični polimer in množico vključkov, pri čemer vključki obsegajo enak keramični polimorf; (b) nanašanje pred-keramične polimerne suspenzije med prvi in drugi izdelek; (c) utijevanje pred-keramične polimerne suspenzije, da se tvori zeleno telo ("green body")\ (d) piroliziranje zelenega telesa, da se tvori trdna keramika, ki vsebuje množico vključkov, (e) konverzijo trdne keramike v matriks, ki obsega enak keramični polimorf, in ki ima v sebi množico vključkov; in (f) ojačitev spoja jedrske kvalitete z nanašanjem v bistvu neprepustne tesnilne plasti, potem ko je pred-keramična polimerna suspenzija popolnoma pretvorjena v keramični polimorf na zunanji površini prvega in drugega izdelka in delnim ali popolnim penetriranjem v matriks spoja jedrske kvalitete, kjer neprepustna tesnilna plast obsega enak keramični polimorf, kjer je neprepustna tesnilna plast izvedena iz kemične parne infiltracije (CVI); kjer je polimorf β-SiC.
  8. 8. Postopek po zahtevku 7, kjer matriks, množica vključkov in neprepustna tesnilna plast vsak sestoji v bistvu iz enakega keramičnega polimorfa, ali kjer vključki obsegajo viskerje ("whiskers") keramičnega polimorfa, ki po izbiri vključujejo oblogo mejne ploskve ("interface coating").
  9. 9. Postopek po zahtevku 7 ali zahtevku 8, kjer se suspenzija utrjuje pri prvi temperaturi, da se tvori zeleno telo, se zeleno telo pirolizira pri drugi temperaturi, ki je višja od prve temperature, da se tvori trdna keramika, in se trdna keramika kristalizira pri temperaturi, kije višja od druge temperature.
  10. 10. Postopek po katerem koli od zahtevkov 7-9, kjer pred-keramični polimer obsega polikarbosilan.
  11. 11. Postopek po zahtevku 7, kjer nanašanje kemične parne infiltracije obsega nanašanje silicij- in ogljik-vsebujočih reaktantnih plinov v nosilnem plinu na prvi in drugi izdelek ter matriks.
  12. 12. Postopek po katerem koli od zahtevkov 7-11, ki nadalje obsega ponavljanje stopenj (b)-(e) enkrat ali večkrat.
  13. 13. Spoj jedrske kvalitete po zahtevku 1, kjer vsaj eden od matriksa, vključkov, v bistvu neprepustne tesnilne plasti ter prvega in drugega keramičnega izdelka obsega drugačen keramični polimorf, kot vsaj eden drugi izmed matriksa, vključkov, v bistvu neprepustne tesnilne plasti ter prvega in drugega keramičnega izdelka, ali kjer vsaj eden od matriksa, vključkov, v bistvu neprepustne tesnilne plasti ter prvega in drugega keramičnega izdelka obsega drugačen keramični material, kot vsaj eden drugi izmed matriksa, vključkov, v bistvu neprepustne tesnilne plasti ter prvega in drugega keramičnega izdelka.
SI201330924T 2012-04-05 2013-04-04 Visokoobstojni spoji med keramičnimi izdelki in postopek izdelave spoja SI2647611T1 (sl)

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