公开(公告)号：WO0069790A3

公开(公告)日：2001-04-26

申请号：PCT/DE0001310

申请日：2000-04-21

Applicant: FRAUNHOFER GES FORSCHUNG ,  KRELL ANDREAS ,  MA HONGWEI

Inventor： KRELL ANDREAS ,  MA HONGWEI

IPC: B01D71/02 ,  C01F7/34 ,  C01F7/36 ,  C04B35/111 ,  C04B35/624 ,  C04B35/626 ,  C04B38/00 ,  C04B41/50 ,  C04B41/87 ,  C23C18/12 ,  C25D13/02 ,  C01F7/02 ,  C04B35/10

CPC classification number: C04B41/87 ,  B01D67/0046 ,  B01D67/0048 ,  B01D71/025 ,  B01D2323/08 ,  B01D2323/12 ,  B82Y30/00 ,  C01F7/34 ,  C01F7/36 ,  C01P2002/60 ,  C01P2004/62 ,  C01P2004/64 ,  C01P2006/13 ,  C01P2006/14 ,  C01P2006/16 ,  C04B35/111 ,  C04B35/624 ,  C04B35/626 ,  C04B35/6264 ,  C04B38/0045 ,  C04B41/009 ,  C04B41/5031 ,  C04B41/52 ,  C04B2111/00801 ,  C04B2111/0081 ,  C04B2235/3217 ,  C04B2235/3218 ,  C04B2235/322 ,  C04B2235/441 ,  C04B2235/616 ,  C04B2235/724 ,  C04B2235/77 ,  C04B2235/80 ,  C23C18/1208 ,  C23C18/1254 ,  C23C18/1283 ,  C23C18/1295 ,  C25D13/02 ,  C04B41/4537 ,  C04B41/4582 ,  C04B35/10 ,  C04B38/00 ,  C04B38/0054 ,  C04B41/4596 ,  C04B41/5042 ,  C04B41/5089 ,  C04B41/5144 ,  C04B41/46 ,  C04B35/00

Abstract: The invention relates to the field of technical ceramics and specifically relates to a method of synthesis for aluminum oxides of different crystalline structure and to the products obtained by said method. The aim of the invention is to provide a method of producing redispersible nanoparticulate corundum and nanoporous Al2O3 sintered products, said method using precursors and being viable on a commercial scale. To this aim, inter alia, a method of producing redispersible nanoparticulate corundum of an average particle size of D50

Abstract translation: 本发明涉及的技术陶瓷的领域，并且涉及用于不同的晶体结构的氧化铝和制品由其制成的合成方法。 本发明的目的是关于前体建筑物的描述和可管理的用于生产再分散性纳米刚玉和纳米多孔氧化铝烧结产品技术标准的过程。 该目的，特别是通过一种用于制备可再分散的纳米刚玉的，其平均粒径达到随后D50 <100nm时，通过加入晶核，溶解在有机或无氯的无机前体或加工以形成溶胶和水解，随后的干燥 通过进一步提高温度至

公开(公告)号：WO03045874A2

公开(公告)日：2003-06-05

申请号：PCT/DE0204259

申请日：2002-11-14

Applicant: FRAUNHOFER GES FORSCHUNG ,  KRELL ANDREAS ,  SPORN DIETER ,  BLANK PAUL

Inventor： KRELL ANDREAS ,  SPORN DIETER ,  BLANK PAUL

IPC: C04B35/628 ,  C04B35/645 ,  C04B35/80 ,  C04B35/00

CPC classification number: C04B35/62886 ,  C04B35/117 ,  C04B35/62852 ,  C04B35/62897 ,  C04B35/645 ,  C04B35/803 ,  C04B35/806 ,  C04B2235/3217 ,  C04B2235/5224 ,  C04B2235/5264 ,  C04B2235/5445 ,  C04B2235/785 ,  C04B2235/786 ,  C04B2235/9607 ,  Y10T428/249928 ,  Y10T428/24993 ,  Y10T428/26 ,  Y10T428/2904 ,  Y10T428/2913 ,  Y10T428/298 ,  Y10T428/2991

Abstract: The invention relates to oxide ceramic fibre reinforced material which is used according to the invention in energy conversion installations. The aim of the invention is to create a fundamentally new concept which meets requirements which have been, until now, totally incompatible, i.e. improve brittle fracture behaviour in order to secure thermal shock stability and damage tolerance in the temperature range of /= 150 mu m, also having a mesoscopically resistant fibre/matrix interface at high temperatures along the length of the axis of the fibre. Said fibre/matrix interface can be subjected to temperatures above room temperature accompanied by propagations of microfissures exhibiting delaminations which are microspcoically localised in their length along the axis of the fibre and which remain at a value smaller than the average fibre coherence length being limited to a maximum of 200 mu m. The invention also aims at using the inventive fibre reinforced material for thermal and/or long-term stressed components and/or installations.

Abstract translation: 本发明涉及一种氧化物陶瓷纤维复合材料，其用于例如本发明中的用于在植物中使用的能量转换。 本发明的目的是提供一种全新的方法，以用于改进的脆性断裂行为，以确保在温度范围内<1000℃，并且热震稳定性和损伤容限先前不相容的要求后的机械的高温稳定性，以确保组分的长期尺寸稳定性的抗蠕变性 ， 该目的是通过包含具有> = 150微摩尔的平均相干长度的部分单结晶结构的纤维氧化物陶瓷纤维复合材料来实现，以在沿纤维轴强度纤维/基体界面高温mesoscopically中，在高于室温的应力，其与扩散 伴随着具有分层宏观裂纹，这是在它们的沿纤维轴显微局部比平均纤维相干长度较小的扩展的限制，而大多数200微摩尔到值。 该目的也通过使用纤维复合材料的根据本发明的用于热和/或长期的重型部件和/或设备来实现。

公开(公告)号：WO9528364A3

公开(公告)日：1995-11-23

申请号：PCT/EP9501474

申请日：1995-04-19

Applicant: FRAUNHOFER GES FORSCHUNG ,  KRELL ANDREAS ,  BLANK PAUL

Inventor： KRELL ANDREAS ,  BLANK PAUL

IPC: A61F2/00 ,  A61K6/06 ,  A61L27/10 ,  C04B35/111

CPC classification number: A61L27/105 ,  A61F2310/00203 ,  C04B35/111

Abstract: The invention relates to ceramics and concerns Al2O3 sintering materials made from corundum powder, a process for the production of the said materials and their use as, for example, human implants or as a material for tools. According to the invention, high-grade, low-defect Al2O3 sintering materials with very high degrees of hardness or high degrees of hardness and strength are produced containing 95-100 vol.% Al2O3 and a Vickers micro hardness of » 2000 at a test load of 10-100 N; these sintering materials have a relative sinter density δ » 98.5 %, grain structure with a mean grain size of « 1.5 νm and inhomogeneities which occur with a frequency of