公开(公告)号：EP1461173B1

公开(公告)日：2005-06-08

申请号：EP01274884.4

申请日：2001-12-07

申请人： Schütz-Dental GmbH ,  FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.

发明人： RABE, Susanne ,  EISELT, Wolfgang ,  LENK, Reinhard ,  RICHTER, Hans-Jürgen

IPC分类号： B22C1/18 ,  A61C13/20

CPC分类号： B22C1/181 ,  A61C13/081 ,  A61C13/083

摘要： The invention relates to a casting material for producing casting molds for casting high-melting point materials. Said casting material comprises a powdered component that contains magnesium oxide and aluminum oxide, and a liquid component. The powdered component additionally contains a calcium aluminate and an alkali fluoride or alkaline-earth fluoride, and the liquid component contains a polyelectrolyte and an alkaline component, said alkaline component adjusting the pH of the liquid component at between 10 and 14. The powdered and the liquid component are mixed, a flowable slip is produced, which is used, once dried, solidified and sintered, to produce a hollow mold.

公开(公告)号：EP3145662A1

公开(公告)日：2017-03-29

申请号：EP15726558.8

申请日：2015-05-19

申请人： Fraunhofer Gesellschaft zur Förderung der angewandten Forschung E.V.

发明人： SCHEITHAUER, Uwe ,  SCHWARZER, Eric ,  POITZSCH, Claudia ,  RICHTER, Hans-Jürgen ,  MORITZ, Tassilo ,  STELTER, Michael

IPC分类号： B22F3/00 ,  C04B35/111 ,  C04B35/486

CPC分类号： B22F3/1021 ,  B22F1/0011 ,  B22F1/0059 ,  B22F3/004 ,  B22F3/008 ,  B22F2001/0066 ,  B22F2003/1042 ,  B28B1/001 ,  B28B11/243 ,  B33Y10/00 ,  B33Y80/00 ,  C04B35/111 ,  C04B35/486 ,  C04B35/6261 ,  C04B35/632 ,  C04B35/638 ,  C04B35/64 ,  C04B2235/3217 ,  C04B2235/3225 ,  C04B2235/3246 ,  C04B2235/5436 ,  C04B2235/5445 ,  C04B2235/602 ,  C04B2235/6028 ,  C04B2235/6562 ,  C04B2235/6582 ,  C04B2235/77

摘要： The invention relates to a method for producing ceramic and/or metal components, in which a supporting structure which encloses at least one free space is formed using a polymer, and in which at least one free space is filled at least in a predefinable region with a plastically deformable or liquid mixture of at least one metal powder or ceramic powder and at least one organic binder. The mixture bears at least partially against the wall of the supporting structure. Then, during a first heat treatment, the mixture is transformed into a state having sufficient rigidity to maintain the geometric shape thereof and a temperature is maintained at which the polymer forming the supporting structure remains shape-stable. Then, during a second heat treatment, the temperature is increased and thereby the polymer forming the supporting structure is completely disintegrated and the metal powder and/or ceramic powder is sintered.

摘要翻译： 本发明涉及一种用于制造陶瓷和/或金属部件的方法，其中使用聚合物形成包围至少一个自由空间的支撑结构，并且其中至少一个自由空间至少填充在预定义区域中， 至少一种金属粉末或陶瓷粉末和至少一种有机粘合剂的塑性变形或液体混合物。 混合物至少部分地抵靠支撑结构的壁。 然后，在第一热处理中，将混合物转变成具有足够的刚性以保持其几何形状并保持形成支撑结构的聚合物保持形状稳定的温度的状态。 然后，在第二热处理期间，温度升高，由此形成支撑结构的聚合物被完全分解并且金属粉末和/或陶瓷粉末被烧结。

公开(公告)号：EP1144089B1

公开(公告)日：2003-09-17

申请号：EP99957336.3

申请日：1999-12-03

申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.

发明人： ADLER, Jörg ,  LENK, Reinhard ,  RICHTER, Hans-Jürgen ,  STOCKMANN, Regina ,  TOCHA, Daniel ,  STROH, Norbert ,  TUDYKA, Stefan

IPC分类号： B01D53/22 ,  B01D71/02

CPC分类号： B01D67/0041 ,  B01D53/228 ,  B01D63/061 ,  B01D63/066 ,  B01D69/00 ,  B01D69/06 ,  B01D71/02 ,  B01D2325/021 ,  B01D2325/022 ,  Y10S55/05

摘要： The invention relates to the area of ceramics and to a ceramic flat membrane which is configured as a multi-channel element. The aim of the invention is to provide a ceramic flat membrane with a larger effective membrane surface. To this end, the inventive ceramic flat membrane consists of at least two layers of at least two sub-layers of different porosity, at least one of these layers having a non-planar geometry. The two layers are joined to each other with at least spot joins and integral joins. The invention also provides a method for producing a flat membrane of this type. According to this method, suspensions are produced from at least two ceramic powders of different particle size. Two sub-layers are formed from said suspensions, then dried and joined to form one layer. At least one layer which is embossed and sintered or unsintered is joined to a non-embossed, similarly embossed, differently embossed or differently structured, sintered or unsintered layer with at least spot joins and integral joins to form a flat membrane.

公开(公告)号：EP0717726B1

公开(公告)日：1997-04-16

申请号：EP94927595.2

申请日：1994-09-09

申请人： Dolomitwerke GmbH ,  FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.

发明人： RICHTER, Hans-Jürgen ,  SCHOBER, Reiner ,  PUTZKY, Gerhard ,  KÖNIG, Gert

IPC分类号： C04B35/597 ,  C04B35/65

CPC分类号： C04B35/597 ,  C04B35/65

摘要： The invention relates to the fields of ceramics and metallurgy and pertains to a process for producing refractory materials based on a SiAION/C or SiAlON/SiC/C composite. The aim of the invention is to indicate a process that prevents increased porosity due to the reaction of the carbon with the oxide or nitride phases of the material. This is accomplished by the invention through a process for producing refractory materials characterized in that to produce a refractory material with SiAlON and carbon, a mixture containing silicon, aluminum, aluminum oxide and carbon is heated in a predominantly nitrogen-containing atmosphere in three stages up to a maximum temperature of 2200 °C and that to produce a refractory material with SiAlON/SiC and carbon, the mixture may contain silicon carbide as well and the mixture is heated in a predominantly nitrogen-containing atmosphere in two stages to a maximum temperature of 2200 °C.

公开(公告)号：EP2121222A2

公开(公告)日：2009-11-25

申请号：EP08701277.9

申请日：2008-01-07

申请人： Fraunhofer-Gesellschaft zur Förderung der Angewandten Forschung e.V. ,  Walcher, Hartmut ,  Maetzig, Marko

发明人： WALCHER, Hartmut ,  MAETZIG, Marko ,  BAUMANN, Andreas ,  LENK, Reinhard ,  MORITZ, Tassilo ,  RICHTER, Hans-Jürgen

IPC分类号： B22F7/06 ,  B28B23/00 ,  A61C13/08

CPC分类号： B22F7/062 ,  B22F2998/10 ,  Y10T428/252 ,  B22F3/22 ,  B22F3/225 ,  B22F3/1021

摘要： The invention relates to the field of ceramics and to composite shaped bodies that can be used, for example, for chip removing tools. The aim of the invention is to provide composite shaped bodies that have a free structure on their top surface and delimiting surface and that can be produced in series. Said aim is achieved in that the ceramic and/or power-metallurgical composite shaped bodies are made of a green sheet and an injection moulded body. Said aim is further achieved, according to the invention, in that a green sheet is incorporated into or applied to a mould, subsequently, at least one ceramic and/or powder-metallurgical injection moulding mass is applied to and/or placed on and/or incorporated on and/or in the mould by means of injection moulding, and subsequently, the mould having one or several parts is removed and/or the one or multi-part composite shaped bodies are removed from the mould. The steps according to the invention can be repeated one or several times.

公开(公告)号：EP3145662B1

公开(公告)日：2018-10-17

申请号：EP15726558.8

申请日：2015-05-19

申请人： Fraunhofer Gesellschaft zur Förderung der angewandten Forschung E.V.

发明人： SCHEITHAUER, Uwe ,  SCHWARZER, Eric ,  POITZSCH, Claudia ,  RICHTER, Hans-Jürgen ,  MORITZ, Tassilo ,  STELTER, Michael

IPC分类号： B22F3/00 ,  C04B35/111 ,  C04B35/486

CPC分类号： B22F3/1021 ,  B22F1/0011 ,  B22F1/0059 ,  B22F3/004 ,  B22F3/008 ,  B22F2001/0066 ,  B22F2003/1042 ,  B28B1/001 ,  B28B11/243 ,  B33Y10/00 ,  B33Y80/00 ,  C04B35/111 ,  C04B35/486 ,  C04B35/6261 ,  C04B35/632 ,  C04B35/638 ,  C04B35/64 ,  C04B2235/3217 ,  C04B2235/3225 ,  C04B2235/3246 ,  C04B2235/5436 ,  C04B2235/5445 ,  C04B2235/602 ,  C04B2235/6028 ,  C04B2235/6562 ,  C04B2235/6582 ,  C04B2235/77

公开(公告)号：EP2440386A1

公开(公告)日：2012-04-18

申请号：EP10722640.9

申请日：2010-06-02

申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.

发明人： GRZESIAK, Andrzej ,  REFLE, Oliver ,  RICHTER, Hans-Jürgen ,  LENK, Reinhard

IPC分类号： B29C67/00 ,  B29C41/12 ,  B22F3/105

CPC分类号： B29C67/0085 ,  B22F3/1055 ,  B22F2003/1056 ,  B22F2998/00 ,  B29C64/20 ,  Y02P10/295 ,  B22F3/003

摘要： The invention is characterized in that a band running tightly about at least two molded bodies (11, 12, 12', 18) contacts the molded bodies (11, 12, 12', 18) at least in segments, that a drive places the band (13) in circulation about the at least two molded bodies (11, 12, 12', 18), that the band (13) comprises a band segment in the longitudinal extension direction of the band about the at least two molded bodies (11, 12, 12', 18) that can be fixed relative to at least one molded body (11, 12, 12', 18) and contacting material (1) stored in the material reservoir (2) at least in segments during a linear motion from the material reservoir (2) to the construction platform (6), such that at least part of the material (1) can be stripped off of the material reservoir (2) and can be applied to the construction platform (6) as a material layer (10, 10') such that the material layer (10, 10') is compressed during application, and that the band segment can be associated with a band surface region directly facing the material reservoir (2) and the construction platform (6) and inclined relative to the plane of motion (B) by an angle a.

公开(公告)号：EP1769197A1

公开(公告)日：2007-04-04

申请号：EP05763780.3

申请日：2005-06-10

申请人： Webasto AG ,  Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.

发明人： HERRMANN, Mathias ,  KLEMM, Hagen ,  MORITZ, Tassilo ,  LENK, Reinhard ,  RICHTER, Hans-Jürgen ,  GÖTTLER, Andreas

IPC分类号： F23Q7/00 ,  H05B3/14

CPC分类号： F23Q7/001 ,  C04B35/58092 ,  C04B35/584 ,  C04B2235/3224 ,  C04B2235/3225 ,  C04B2235/3873 ,  C04B2235/3891 ,  C04B2235/6023 ,  C04B2235/72 ,  C04B2235/75 ,  C04B2235/77 ,  C04B2235/80 ,  F23Q2007/004 ,  H05B3/141 ,  H05B2203/027

摘要： The invention relates to a glow plug and methods for the production thereof. According to the invention, said glow plug is made from an electrically conducting and an electrically nonconducting element, sintered composite ceramic material being used for the production thereof. The disclosed glow plugs can preferably be used for fuel-operated auxiliary heaters of motor vehicles. The aim of the invention is to be able to produce said glow plugs in an inexpensive and flexible manner while providing the same with a longer service life and greater resistance to oxidation. Said aim is achieved by surrounding two opposite sides of the conducting element with the electrically nonconducting element while providing the conducting element with an expanded cross-section in the distal area, the ratio of the expanded cross-section to the cross-section of the electrically conducting element ranging between 2.5 and 5 to 1. Sixty to 85 percent of the surface of the proximal heating area of the electrically conducting element, which has a reduced cross-section, are covered by the material of the electrically nonconducting element.

公开(公告)号：EP2440386B1

公开(公告)日：2013-12-25

申请号：EP10722640.9

申请日：2010-06-02

申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.

发明人： GRZESIAK, Andrzej ,  REFLE, Oliver ,  RICHTER, Hans-Jürgen ,  LENK, Reinhard

IPC分类号： B29C67/00 ,  B29C41/12 ,  B22F3/105

CPC分类号： B29C67/0085 ,  B22F3/1055 ,  B22F2003/1056 ,  B22F2998/00 ,  B29C64/20 ,  Y02P10/295 ,  B22F3/003

摘要： A device and a method are described for feeding a material layer onto a construction platform, or onto at least one material layer located on the construction platform, for producing an object, which is mounted so it is linearly movable relative to a material reservoir and the construction platform along a motion plane, to which the material reservoir and the construction platform can be orthogonally deflected. A circulating band IS stretched around at least two molded bodies, which contacts at least in segments the molded bodies. a drive circulates the band around the at least two bodies. The band has a band segment which can be fixedly assigned relative to at least one body in the longitudinal section around the at least two molded bodies. The band segment at least in segments contacts the material stored in the material reservoir during the linear motion from the material reservoir to the construction platform so that at least a part of the material can be stripped off from the material reservoir and can be applied as the material layer to the construction platform to compress the material layer.

公开(公告)号：EP2167445A1

公开(公告)日：2010-03-31

申请号：EP08785991.4

申请日：2008-07-08

申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.

发明人： MARTIN, Hans-Peter ,  RICHTER, Hans-Jürgen ,  DAHMS, Steffen

IPC分类号： C04B37/00

CPC分类号： C04B37/005 ,  B32B18/00 ,  C04B35/5755 ,  C04B35/581 ,  C04B2235/3217 ,  C04B2235/3225 ,  C04B2235/3826 ,  C04B2235/3865 ,  C04B2235/5445 ,  C04B2235/6562 ,  C04B2235/96 ,  C04B2237/08 ,  C04B2237/083 ,  C04B2237/365 ,  C04B2237/366 ,  C04B2237/58 ,  C04B2237/60

摘要： The invention pertains to the field of ceramics and relates to a component such as can be used as a wear component. The aim of the present invention is to provide a component having joint zones comprising a chemical composition materially extensively approximated to that of the base component. The aim is achieved by a component having base components to be joined made of the same or different ceramic materials, the chemical composition of the joint zone differing by 1 to a maximum of 40 at.-% from the chemical composition of the base components, and thermal expansion coefficients differing by a maximum of 2.10-6 K-1. The invention further relates to a method in which at least two ceramic base components are coated with a film in the area of the joint zone, the film comprising materials having a maximum of 70% sinter additives that are not materials of the respective base components, and said compound body being exposed to an increase in temperature for a fluid phase reaction.