公开(公告)号：US20180236731A1

公开(公告)日：2018-08-23

申请号：US15436344

申请日：2017-02-17

Applicant: General Electric Company

Inventor： Arunkumar Natarajan ,  Carlos Bonilla Gonzalez ,  Vadim Bromberg ,  Jeffrey Jon Schoonover ,  Srikanth Chandrudu Kottilingam ,  Prabhjot Singh ,  Kwok Pong Chan

IPC: B29C67/00 ,  B28B1/00 ,  B33Y10/00 ,  B33Y70/00 ,  B33Y80/00 ,  B22F3/00 ,  B28B11/24 ,  B22F3/10

CPC classification number: B22F3/1021 ,  B22F3/008 ,  B22F2999/00 ,  B28B1/001 ,  B28B11/243 ,  B29C64/153 ,  B29C64/40 ,  B29K2505/08 ,  B29K2509/02 ,  B29L2031/7504 ,  B33Y10/00 ,  B33Y40/00 ,  B22F5/10 ,  B22F2003/1058

Abstract: A method of binder jet printing a part includes depositing a layer of a powder on a working surface and selectively printing a binder solution comprising a binder into the layer of powder in a first pattern to generate a printed layer. The pattern is representative of a structure of a layer of the part. The method also includes selectively printing a channel support agent solution comprising a channel support agent into the layer of powder to generate a green body. The channel support agent is selectively printed in a second pattern representative of an internal channel of the part. The method further includes heating the green body part above a first temperature to remove the binder and generate a brown body part and heating the brown body part above a second temperature to sinter the powder to generate the part having the internal channel generated from removal of the channel support agent.

公开(公告)号：US20180071820A1

公开(公告)日：2018-03-15

申请号：US15261547

申请日：2016-09-09

Applicant: General Electric Company

Inventor： Arunkumar Natarajan ,  Rajendra Madhukar Kelkar ,  Jeffrey Jon Schoonover ,  Prabhjot Singh ,  Venkat Subramaniam Venkataramani ,  Kwok Pong Chan ,  John Leman

IPC: B22F3/10 ,  B22F1/00 ,  B33Y10/00 ,  B33Y40/00 ,  B33Y80/00 ,  C09D133/12 ,  C09D125/06 ,  C09D169/00 ,  C09D129/04

CPC classification number: B22F3/1021 ,  B22F1/0062 ,  B22F3/008 ,  B22F2998/10 ,  B33Y10/00 ,  B33Y80/00 ,  C09D129/04 ,  C09D133/12

Abstract: A method of binder jet printing a metal part includes depositing a layer of a metal powder on a working surface of a binder jet printer and selectively printing a binder solution having a reversible binder into the layer of metal powder in a pattern to generate a printed layer. The pattern is representative of a structure of a layer of the metal part. The method also includes curing the reversible binder in the printed layer to generate a layer of a green body metal part and heating the green body metal part above a first temperature to remove a substantial portion of the reversible binder and generate a brown body metal part. The reversible binder is thermally decomposed to generate oligomers that remain within and strengthen the brown body metal part. The method further includes heating the brown body metal part above a second temperature to remove the oligomers and sinter the metal powder to generate the metal part. The metal part is substantially free of char residue.

公开(公告)号：US20170288638A1

公开(公告)日：2017-10-05

申请号：US15087369

申请日：2016-03-31

Applicant: General Electric Company

Inventor： Douglas Glenn Wildes ,  Lowell Scott Smith ,  Kwok Pong Chan ,  Vadim Bromberg

IPC: H03H9/205 ,  B06B1/06 ,  H01L41/33 ,  H01L41/09 ,  H01L41/113 ,  H01L41/29 ,  A61B8/00 ,  H01L41/047

CPC classification number: H01L41/33 ,  A61B8/4281 ,  A61B8/4444 ,  A61B8/4483 ,  B06B1/0622 ,  H01L41/047 ,  H01L41/09 ,  H01L41/113 ,  H01L41/27 ,  H01L41/277 ,  H01L41/29 ,  H03H3/02 ,  H03H9/205 ,  H03H2003/0478 ,  Y10T29/42 ,  Y10T29/49005 ,  Y10T29/49798

Abstract: The present disclosure relates to the bulk manufacture of transducer arrays, including arrays having at least one 3D printed (or otherwise additive manufactured) acoustic matching layers. In certain implementations, the manufactured transducers include a composite-piezoelectric transducer on a de-matching layer. In one implementation, by producing multiple arrays at once on a common carrier, and by using direct-deposit additive processes for the matching layers, the described processes greatly reduce the number of parts and the number of manual operations.

公开(公告)号：US20150311424A1

公开(公告)日：2015-10-29

申请号：US14260844

申请日：2014-04-24

Applicant: General Electric Company

Inventor： Matthew Harvey Krohn ,  Kwok Pong Chan

IPC: H01L41/18 ,  B06B1/06

CPC classification number: H01L41/183 ,  B06B1/06 ,  B06B1/0622 ,  C08G59/223 ,  C08G59/24 ,  C08G59/306 ,  C08G77/14 ,  C08K5/5415 ,  C08K5/5419 ,  C08L51/085 ,  C08L63/00 ,  C08L83/06 ,  H01L41/37

Abstract: A piezoelectric composite for use in an ultrasonic transducer and a method of forming the same is provided. The composite has a piezoelectric ceramic component and a hydrophobic polymer component arranged to form a 1-3, 2-2, or 3-3 composite type. In one embodiment, the hydrophobic polymer is selected to polymerize at a moderate temperature.

Abstract translation: 提供了一种用于超声波换能器的压电复合材料及其形成方法。 复合材料具有压电陶瓷组分和布置成形成1-3,2-2或3-3复合类型的疏水性聚合物组分。 在一个实施方案中，选择疏水性聚合物在中等温度下聚合。