Abstract:
PROBLEM TO BE SOLVED: To provide an electrolysis installation for giving off corrosive gaseous species, the installation having a separation membrane that allows electrodes constituting an anode zone and a cathode zone to be close to each other while effectively suppressing a corrosion-erosion phenomenon. SOLUTION: The electrolysis installation 200 includes a container 201 housing an electrolyte 202 such as a hydrofluoric acid (HF) solution, in which a cathode 203 and an anode 204 are disposed. Four separation membranes 214 to 217 are disposed between a cathode 203 and an anode 204 in rows adjacent to each other. Each of the separation membranes 214 to 217 is made of a carbon fiber reinforced material hardened by a carbon matrix, and has a porous portion that is permeable to ions and impermeable to each gaseous species produced in the electrolyte. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a method of manufacturing an active cooling panel using a thermostructural composite material efficient with durability and showing no leakage with respect to fluid flowing in an inner passage of the panel. SOLUTION: A metal coating is formed on an inner side face of a first thermostructural composite material part 20 having a recess forming a flow path 23 and also on the inner side face of a second thermostructural composite material part 10 applied to the inner side face of the first part. The first and second parts are assembled by joining the respective inner faces facing each other by means of hot compression or especially hot isostatic compression, and a thermostructural composite material cooling panel having the integrated fluid flow path is obtained. This method can be applied to the manufacture of a heat exchange wall such as the wall of a combustion chamber of an aircraft engine, a branch part of a rocket engine or a plasma containment chamber in a nuclear fusion reactor. COPYRIGHT: (C)2004,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a method of fabricating a thermostructural composite material part that maintains mechanical characteristics at high temperature. SOLUTION: The method includes: (1) using chemical vapor infiltration to form a first continuous interphase 32 on the fibers 30 of a fiber structure made of refractory fibers, the interphase having a thickness of no more than 100 nanometers; (2) impregnating the fiber structure with a consolidation composition comprising a carbon or ceramic precursor resin; (3) forming a fiber preform that is consolidated by shaping the impregnated fiber structure and using pyrolysis to transform the resin into a discontinuous solid residue 34 of carbon or ceramic; (4) using chemical vapor infiltration to form a second continuous interphase layer 36; and (5) densifying the preform with a refractory matrix. The invention also includes a part obtained by this method. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a method for reinforcing a fiber structure or binding a plurality of fiber structures, while conventional defects are settled. SOLUTION: A porous fiber structure is consolidated by forming deposit of a refractory material therein by partially densifying the fiber structure in such a manner as to bond the fibers of the fiber structure together so as to enable the fiber structure to be handled without deformed, while the major part of the initial pore volume of the fiber structure is made empty, and hard pins are implanted through the consolidated porous structure. A blank is obtained by reinforcing a fiber structure by implanting pins or by bonding consolidated fiber structures together, The bonding is performed by implanting pins. COPYRIGHT: (C)2004,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide an active cooling panel of a thermostructural composite material and a method for manufacturing the same suitable for manufacturing a heat exchange wall such as the wall of a combustion chamber of an aircraft engine, a branch part of a rocket engine or an extreme plasma chamber of a nuclear fusion reactor. SOLUTION: The active cooling panel 10 is assembled by joining the inner surfaces 21, 31 with first and second components 20, 30 of the thermostructural composite material respectively having inner surfaces 21, 31 and opposite outer surfaces, and provided with a channel 24 formed of a recess formed on the inner surface of at lease one of the first and second components. The panel 10 is provided with a seal layer joined with at least one of the first and second components 20, 30 and positioned at a specified distance from respective inner faces for assembly. COPYRIGHT: (C)2004,JPO&NCIPI
Simplified title:保护含有碳之复合物材料组件对抗氧化作用及以此方式受到保护之组件 PROTECTING COMPOSITE MATERIAL PARTS CONTAINING CARBON AGAINST OXIDATION, AND PARTS PROTECTED IN THIS WAY
Abstract in simplified Chinese:一种由含有碳及提供剩余开放内部微孔之复合物材料制成之组件,其系借由运行施加一含有至少一金属磷酸盐与二硼化钛之浸渗组合物之至少一步骤而受到保护以对抗氧化作用。以此方式提供对抗氧化作用之保护,其在温度高于1000℃时有效,包括在用于碳氧化作用之触媒存在时及在潮湿状况下。
Simplified title:耐火纤维之三维纤维结构,其制造方法,及于热结构复合材料上之应用 A THREE-DIMENSIONAL FIBER STRUCTURE OF REFRACTORY FIBERS, A METHOD OF MAKING IT, AND AN APPLICATION TO THERMOSTRUCTURAL COMPOSITE MATERIALS
Simplified title:耐火纤维之三维纤维结构,其制造方法,及于热结构复合材料上之应用 A THREE-DIMENSIONAL FIBER STRUCTURE OF REFRACTORY FIBERS, A METHOD OF MAKING IT, AND AN APPLICATION TO THERMOSTRUCTURAL COMPOSITE MATERIALS
Abstract:
A setup for assembling, by brazing, a composite panel including at least two parts separated by a filler material and joined together by brazing. The setup includes a furnace to achieve a brazing temperature for brazing the panel, and an assembly device which has a form having a shape similar to the final shape of the panel to be brazed. In particular, the assembly device further includes a pressing device to apply mechanical pressure to at least part of the surface of the panel in a direction allowing the panel to be permanently deformed into a shape which matches that of the form. The pressing device is moved under the action of a spring, and the forces applied by the spring being determined so that, at the brazing temperature, the spring applies the force necessary for deforming the panel against the form.
Abstract:
A fiber preform for constituting the fiber reinforcement of composite material is prepared and then consolidated by depositing sufficient matrix phase therein to bond the fibers together while not completely densifying the preform. Pins of rigid material are put into place through the consolidated preform and densification of the consolidated preform containing the pins is continued by depositing at least a ceramic matrix phase. Thereafter, at least a portion of each pin is eliminated so as to leave a calibrated perforation passing through the resulting part, the pins being made at least in part out of a material that can be eliminated by applying treatment that does not affect the ceramic material of the matrix.