US 11,702,367 B2
Binder jetting in additive manufacturing of inhomogeneous three-dimensional parts
Alexander Barbati, Cambridge, MA (US); Michael Andrew Gibson, Boston, MA (US); Nihan Tuncer, Cambridge, MA (US); and Brian Kernan, Andover, MA (US)
Assigned to Desktop Metal, Inc., Burlington, MA (US)
Appl. No. 16/328,012
Filed by Desktop Metal, Inc., Burlington, MA (US)
PCT Filed Oct. 17, 2018, PCT No. PCT/US2018/056348
§ 371(c)(1), (2) Date Feb. 25, 2019,
PCT Pub. No. WO2019/079497, PCT Pub. Date Apr. 25, 2019.
Claims priority of provisional application 62/573,410, filed on Oct. 17, 2017.
Prior Publication US 2021/0331242 A1, Oct. 28, 2021
Int. Cl. C04B 35/111 (2006.01); B33Y 10/00 (2015.01); B33Y 80/00 (2015.01); B33Y 50/02 (2015.01); B33Y 30/00 (2015.01); C04B 35/634 (2006.01); C04B 35/565 (2006.01); B29C 64/165 (2017.01); B33Y 70/10 (2020.01); B22F 10/14 (2021.01); B22F 12/55 (2021.01); B28B 1/00 (2006.01); C09D 11/023 (2014.01); C09D 11/033 (2014.01); C09D 11/037 (2014.01); C09D 11/10 (2014.01); C09D 11/322 (2014.01); C09D 11/38 (2014.01); C09D 11/54 (2014.01); B22F 1/10 (2022.01); B22F 12/33 (2021.01); B22F 10/30 (2021.01)
CPC C04B 35/111 (2013.01) [B22F 1/10 (2022.01); B22F 10/14 (2021.01); B22F 12/55 (2021.01); B28B 1/001 (2013.01); B29C 64/165 (2017.08); B33Y 10/00 (2014.12); B33Y 30/00 (2014.12); B33Y 50/02 (2014.12); B33Y 70/10 (2020.01); B33Y 80/00 (2014.12); C04B 35/565 (2013.01); C04B 35/63488 (2013.01); C09D 11/023 (2013.01); C09D 11/033 (2013.01); C09D 11/037 (2013.01); C09D 11/10 (2013.01); C09D 11/322 (2013.01); C09D 11/38 (2013.01); C09D 11/54 (2013.01); B22F 10/30 (2021.01); B22F 12/33 (2021.01); B22F 2207/01 (2013.01); B22F 2207/11 (2013.01); C04B 2235/6026 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A method for forming an object, comprising:
depositing a first layer of powder along a powder bed, the depositing comprising spreading the layer of powder along the powder bed, the powder including inorganic particles;
depositing, via a first printhead, a first layer of binder along a portion of the first layer of powder, the depositing comprising jetting via the first printhead, the first layer of binder along the first layer of powder;
depositing, via a second printhead, an additive along the first layer of powder and the first layer of binder, the additive including an active component and wherein the additive is selected from the group consisting of chromium, tungsten, manganese, nickel and molybdenum;
forming, with the binder, layer of powder, and the active component, an object; and
thermally processing the object into a three-dimensional part, the three-dimensional part including, in an area corresponding to a distribution of the active component of the object, a physicochemical gradient at least partially formed from thermally processing the inorganic particles and the active component of the object.