摘要:
A device and a method to determine a position of a component that is moveable in a linear manner along an assigned axis are provided. A reference element that extends in a direction of the assigned axis is assigned to the component. The component may be brought into mechanical contact with the reference element. A respective piezo transducer is arranged on the reference element to generate and receive vibrations in a material used for the reference element.
摘要:
A multi-layer piezoelectric element includes a stack having metal layers and piezoelectric layers stacked one on another, and a pair of external electrodes formed on the side faces of the stack. At least one of the metal layers is a stress relieving layer having partial metal layers scattered between the two piezoelectric layers and voids. Junction sections are formed between the two piezoelectric layers to join and are disposed on both sides of an imaginary straight line drawn to connect the center of width of one of the external electrodes and the center of width of the other of the external electrodes in a plane including the stress relieving perpendicular to the stacking direction.
摘要:
In a method for the production of a gradient encapsulation layer 20 on a piezoelectric actuator 1, based on this gradient encapsulation layer 20, the piezoelectric actuator 1 does not 5 require an additional housing-like enveloping structure in order to be protected externally. The gradient encapsulation layer 20 is produced by cold gas spraying of particles having different material properties.
摘要:
A piezoceramic multilayer actuator has a first sub-stack (12, 14, 16) with a plurality of piezoceramic layers (22) and at least one internal electrode (24, 26), the piezoceramic layers (22) and the at least one internal electrode (24, 26) being laminated in an alternating manner, a second sub-stack (12, 14, 16) has a plurality of piezoceramic layers (22) and at least one internal electrode (24, 26), the piezoceramic layers (22) and the at least one internal electrode (24, 26) being laminated in an alternating manner, and a connection layer (40) arranged between the first sub-stack (12, 14, 16) and the second sub-stack (12, 14, 16), wherein the connection layer (40) is set up by a multitude of single connection points or connection lines (44) or other connection regions.
摘要:
A wire saw (S) for separating a plurality of ceramic components (11-16) from a ceramic component block (1) has a roller system (2), the roller system has a plurality of deflecting rollers (3-5) guiding a wire (6) to form a wire harp (7), wherein at least one of the deflecting rollers (3) is divided into separate discs (31-36) guiding a single wire winding (61-66) of the wire (6) and being inclined at an adjustable angle (a) of less than 90 DEG to an axle (A) connecting the centers (M1-M6) of the discs (31-36).
摘要:
A piezoceramic composition has a nominal empirical formula of Pb1-aREbAEc[ZrxTiy(FefWw)z]O3. RE is a rare earth metal with a fraction b and AE is an alkaline earth metal with a fraction c. Iron is present with an iron fraction f·z, and tungsten with a tungsten fraction w·z. In addition, the following relationships apply: a 0; w>0; 0.1=f/w=5; x>0; y>0; z>0 and x+y+z=1. A method of producing a piezoceramic material using the piezoceramic composition has the steps: a) provision of a green ceramic body with the piezoceramic composition, and b) heat treatment of the green body, a piezoceramic of the piezoceramic material being produced from the piezoceramic composition. The heat treatment encompasses calcining and/or sintering. The piezoceramic composition undergoes compaction at below 1000° C. Metals which melt at low temperature (such as silver or a silver-palladium alloy with a low palladium content, for example) can therefore be sintered together with the piezoceramic composition.
摘要翻译:压电陶瓷组合物具有名义上的经验公式,即Pb 1-a C b C x C x Ti x Ti (3)(3)(3)(3)(3)(3) RE是具有级分b的稀土金属,AE是具有级分c的碱土金属。 铁存在铁分数f.z,钨分数为w.z。 此外,以下关系适用:a <1; 0 = b = 0.15; 0 = c = 0.5; f> 0; w> 0; 0.1 = f / w = 5; x> 0; y> 0; z> 0且x + y + z = 1。 使用压电陶瓷组合物制造压电陶瓷材料的方法具有以下步骤:a)使用压电陶瓷组合物提供生坯陶瓷体,以及b)生坯体的热处理,由压电陶瓷组合物制备的压电陶瓷材料的压电陶瓷 。 热处理包括煅烧和/或烧结。 压电陶瓷组合物在低于1000℃下进行压实。因此,可以与压电陶瓷组合物一起烧结在低温熔化的金属(例如银或具有低钯含量的银钯合金)。
摘要:
A piezoceramic multilayer actuator (10) has a plurality of piezoceramic layers (12), a security layer (20) and a plurality of inner electrodes (16, 18). The piezoceramic layers (12) has a piezoceramic first material sintered at a sintering temperature. The security layer (20) has a second material and is disposed between two piezoceramic layers (12). Each of the plurality of inner electrodes (16, 18) has a third material and is deposited between two piezoceramic layers (12). The degree of sintering of the second material is lower than the degree of sintering of the third material.
摘要:
A piezo actuator in a monolithic multilayer design, has at least one piezoelectrically active stack element, wherein the stack element has stacked piezoceramic layers made of piezoceramic material and electrode layers arranged between the piezoceramic layers, at least one piezoelectrically inactive terminating region arranged above the stack element, and at least one junction region arranged between the stack element and the terminating region, wherein the stack element, the terminating region and the junction region are connected to one another to form a monolithic total stack. The junction region has stacked piezoceramic layers and electrode layers arranged between the piezoceramic layers, and the piezoceramic layers and the electrode layers are in a form and are arranged on one another such that in the stack direction of the junction region one piezoelectrically active area per junction piezoceramic layer is successively changed from piezoceramic layer to piezoceramic layer.
摘要:
A piezoelectric component (1) has at least one monolithic piezo element (10) having an electrode layer (101), at least one further electrode layer (102), at least one piezoceramic layer (103) disposed between the electrode layers and at least one predetermined breaking point (100) which, in the event of mechanical overload of the piezo element, leads to the formation of a specific crack (110) in the monolithic piezo element, wherein the predetermined breaking point includes the electrode layer. The component is, for example, a piezoelectric actuator with a monolithic actuator body (2) in which piezo elements with predetermined breaking points and further piezo elements (11) without predetermined breaking points are arranged one on top of the other and sintered collectively.
摘要:
A clothes dryer includes at least one clothes drum for receiving textiles and at least one ultrasound atomizer disposed in the dryer for generating an aerosol from a liquid. The invention further relates to a method for introducing an aerosol into the clothes drum of the clothes dryer. A liquid is conducted from a reservoir to an ultrasound atomizer disposed in the clothes dryer, atomized there, and conducted into the clothes drum. The invention relates to further applications for an ultrasound atomizer, such as a washing machine, dishwasher, and/or motor vehicle.