KR960000826A - 3개의 모드의 세공 조성을 가진 SiC 다공성 베어링재(bearing material) - Google Patents

3개의 모드의 세공 조성을 가진 SiC 다공성 베어링재(bearing material) Download PDF

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KR960000826A
KR960000826A KR1019950013923A KR19950013923A KR960000826A KR 960000826 A KR960000826 A KR 960000826A KR 1019950013923 A KR1019950013923 A KR 1019950013923A KR 19950013923 A KR19950013923 A KR 19950013923A KR 960000826 A KR960000826 A KR 960000826A
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sic
porous bearing
less
sic porous
bearing material
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KR0145490B1 (ko
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알렉산더 쉬베츠 칼
카타이닌거 안톤
푼두스 미카엘
그라임 요헨
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하.헬르만 게. 멤펠
엘렉트로쉬멜즈베르크 켐프텐 게엠베하
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    • 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
    • C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
    • 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
    • C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
    • C04B38/0051—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof characterised by the pore size, pore shape or kind of porosity
    • C04B38/0061—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof characterised by the pore size, pore shape or kind of porosity closed porosity
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B33/00—Silicon; Compounds thereof
    • C01B33/113—Silicon oxides; Hydrates thereof
    • C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
    • C01B33/18—Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof
    • 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
    • C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
    • C04B38/0051—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof characterised by the pore size, pore shape or kind of porosity
    • 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
    • C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
    • C04B38/06—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by burning-out added substances by burning natural expanding materials or by sublimating or melting out added substances
    • C04B38/063—Preparing or treating the raw materials individually or as batches
    • C04B38/0635—Compounding ingredients
    • C04B38/0645—Burnable, meltable, sublimable materials
    • C04B38/065—Burnable, meltable, sublimable materials characterised by physical aspects, e.g. shape, size or porosity
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic Table
    • C07F7/02—Silicon compounds
    • C07F7/08—Compounds having one or more C—Si linkages
    • C07F7/18—Compounds having one or more C—Si linkages as well as one or more C—O—Si linkages
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/043—Sliding surface consisting mainly of ceramics, cermets or hard carbon, e.g. diamond like carbon [DLC]
    • 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
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00241—Physical properties of the materials not provided for elsewhere in C04B2111/00
    • C04B2111/00344—Materials with friction-reduced moving parts, e.g. ceramics lubricated by impregnation with carbon
    • C04B2111/00353—Sliding parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2202/00—Solid materials defined by their properties
    • F16C2202/02—Mechanical properties
    • F16C2202/10—Porosity

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Ceramic Products (AREA)
  • Porous Artificial Stone Or Porous Ceramic Products (AREA)
  • Sliding-Contact Bearings (AREA)
  • Developing Agents For Electrophotography (AREA)
  • Silicon Compounds (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

이 발명은 3개 모드의 세공조성(trimodal pore composition)을 가진 SiC 다공성 베어링재(porous SiC bearing materials)와 그 제조방법에 관한 것이다.
각각의 폐쇄세공 3∼10Vol%를 가진 무압소결 SiC의 다공성 베어링재를 미크로세공(M), 섬유형성세공(F) 및 구형마크로세공(S)으로 구성되는 3개모드의 세공조성을 가지며, 그 세공계 F-M-S(제1도)의 양은 그 코너점(wrner points)a=10%M-80%F-10%S b=10%M-10%F-80%S c=40%M-10%F-50%S, d=40%M-50%F-10%S를 가진 사다리꼴영역에 의해 정해지며, 그 미크로세공은 직경이 5μm 또는 5μm 미만이고, 섬유형상 세공은 직경이 30μm 또는 30μm미만이며 길이가 80μm는 80μm미만이고, 구형세공은 직경이 70μm 또는 70μm 미만이며, 적어도 250/㎡의 휨강도를 가진다.

Description

3개의 모드의 세공 조성을 가진 SiC 다공성 베어링재(bearing material)
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 이 발명의 3개의 모드의 세공조성영역 표시도.
제2도는 이 발명의 베어링재의 조성 개략도.
제3도는 이 발명에 의해 얻어진 소결체(Sintered body)의 미세 구조도.

Claims (9)

  1. 각각의 폐쇄세공(closel pores)3∼10Vol%를 가진 무압소결(pressureless sintened)시킨 SiC 다공성 베어링재(porous bearing material)에 있어서, 미크로세공(micropores)(OM), 섬유형상 마크로세공(fibershaped macropores)(F) 및 구형마크로세공(spherical macropores)(S)으로 구성되는 3개 세공조성(trimodel pore composition)을 가지며, 세공계 F-M-S(제1도)의 그 조성양은 코너점(corner points) a=10%M-80%F-10%S, b=10%M-10%F-80%S, c=40%M-10%F-50%S, d=40%M-50%F-10%S을 가진 사다리꼴영역에 의해 정해지며, 그 미크로세공은 직경이 5μm 또는 5μm미만이고, 그 섬유형성 마크로세공은 직경이 30μm 또는 30μm미만이고, 길이가 80μm 또는 80μm미만이며, 구형마크로세공은 직경이 70μm 또는 70μm미만이고, 휨강도가 적어도 250MN/㎡인 SiC 다공성 베어링제.
  2. 제1항에 있어서, 그 세공이외에 존재한 중 SiC 매트릭스(dense SiC matrix)는 평균크기〈50μm이며 탄소원소, 알루미늄 및/또는 보론 2wt%(총) 이내를 가진 각주관상 결정형상의 α-SiC로 구성함을 특징으로 하는 SiC 다공성 베어링제.
  3. 유기질단섬유와 플라스틱 구형체의 중량비 9:1∼1:9의 크기분포가 좁은 그 유기질 단섬유와 플라스틱 구형체를 소결첨가제와 압축조제로 혼가한 미세한 α-SiC 분말에 그 도핑한 SiC 분말을 기준으로 하여 1∼3.5 중량부로 첨가시켜, 그 균질화시킨 분말혼합물을 압축성형하여 생지(green bodies)를 얻으며, 그 생지를 온도 1000℃이내에서 보호가스분위기의 존재하에 예열시킨 다음 그 예열시킨 생지를 온도 2000℃∼2100℃에서 소결시켜 그 실리콘카바이드(SiC)의 매트릭스밀도의 90%∼97%의 밀도를 가진 소결체를 형성함을 특징으로 하는 제1항 또는 제2항의 SiC 다공성 베어링재의 제조방법.
  4. 제3항에 있어서, 그 소결 참가제는 알루미늄 니트라이드 및/또는 보론 및 탄소를 2wt% 이내의 양으로 사용함을 특징으로 하는 SiC 다공성 베어링재의 제조방법.
  5. 제3항 또는 제4항에 있어서, 그 유기질 단섬유는 크기분포 dF=8-30μm, lP=15-90μm(dP=섬유직경, lP=섬유길이)를 가진 셀룰로오즈임을 특징으로 하는 SiC 다공성 베어링재의 제조방법.
  6. 제3항에 있어서, 그 플라스틱 구형체는 크기분포 dS=40-80μm(dS=구형체직경)을 가진 폴리(메틸메타크릴데이트)구형체(PWMA)임을 특징으로 하는 SiC 다공성 베어링제의 제조방법.
  7. 제3항에 있어서, 그 예열시킨 소지의 소결은 입력≤30mbar에서 불활성 분위기의 존재하에 실시함을 특징으로 하는 SiC 다공성 베어링재의 제조방법.
  8. 그라파이트링에 대한 페어링(pairing)을 한 경질/연질링 또는 그 자체에 대한 페어링을 한 경질/경질링에서 축방향의 플로팅-링시일(floating-ring seals)의 시일링 링(sealing rings)으로서 그 SiC 다공성 베어링재의 사용.
  9. 보호측 슬리브(Slelves)와 슬라이딩 베어링의 구성성분으로 SiC 다공성 베어링재의 사용.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019950013923A 1994-06-01 1995-05-30 3개 모드의 세공조성을 가진 sic 다공성 베어링재 KR0145490B1 (ko)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4419243A DE4419243A1 (de) 1994-06-01 1994-06-01 Gleitwerkstoff aus porösem SiC mit trimodaler Porenzusammensetzung
DE94-P4419243.6 1994-06-01
DE94-P44.19.243.6 1994-06-01

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KR960000826A true KR960000826A (ko) 1996-01-25
KR0145490B1 KR0145490B1 (ko) 1998-07-15

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KR1019950013923A KR0145490B1 (ko) 1994-06-01 1995-05-30 3개 모드의 세공조성을 가진 sic 다공성 베어링재

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US (1) US5762895A (ko)
EP (1) EP0685437B1 (ko)
JP (1) JP2722182B2 (ko)
KR (2) KR0159835B1 (ko)
CN (1) CN1040341C (ko)
CA (1) CA2146399C (ko)
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DE (2) DE4419243A1 (ko)

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KR960000770A (ko) 1996-01-25
KR0159835B1 (ko) 1998-11-16
EP0685437B1 (de) 1996-11-06
CZ283013B6 (cs) 1997-12-17
CN1040341C (zh) 1998-10-21
EP0685437A1 (de) 1995-12-06
US5762895A (en) 1998-06-09
CA2146399A1 (en) 1995-12-02
CN1121961A (zh) 1996-05-08
JPH07332367A (ja) 1995-12-22
CZ29295A3 (en) 1995-12-13
DE59500042D1 (de) 1996-12-12
CA2146399C (en) 1999-08-03
JP2722182B2 (ja) 1998-03-04
KR0145490B1 (ko) 1998-07-15
DE4419243A1 (de) 1995-12-07

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