	US 11,718,896 B2
	Nano-lanthanum oxide reinforced tungsten-based composite material and preparation method thereof
Lina Ji, Chongqing (CN); Shenyu Wei, Chongqing (CN); Wenjie Wu, Chongqing (CN); and Honglin Ma, Chongqing (CN)
Assigned to Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing (CN)
Filed by Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing (CN)
Filed on Jun. 30, 2022, as Appl. No. 17/810,171.
Claims priority of application No. 202111159914.9 (CN), filed on Sep. 30, 2021.
Prior Publication US 2023/0101137 A1, Mar. 30, 2023
Int. Cl. C22C 1/05 (2023.01); B33Y 10/00 (2015.01); B33Y 40/10 (2020.01); B33Y 70/10 (2020.01); B22F 10/36 (2021.01); B22F 10/34 (2021.01); B22F 10/28 (2021.01); B22F 10/366 (2021.01); B22F 9/04 (2006.01); C22C 27/04 (2006.01)

CPC C22C 1/05 (2013.01) [B22F 9/04 (2013.01); B22F 10/28 (2021.01); B22F 10/34 (2021.01); B22F 10/36 (2021.01); B22F 10/366 (2021.01); B33Y 10/00 (2014.12); B33Y 40/10 (2020.01); B33Y 70/10 (2020.01); C22C 27/04 (2013.01); B22F 2009/043 (2013.01); B22F 2301/20 (2013.01); B22F 2302/25 (2013.01); B22F 2304/10 (2013.01)]

7 Claims

1. A preparation method of a nano-lanthanum oxide reinforced tungsten- based composite material, comprising:

step 1: weighing and mixing a pure tungsten powder and a nano-lanthanum oxide powder to obtain a mixed powder, wherein, the pure tungsten powder accounts for 98-99.5% of the mixed powder by mass percent, and the nano-lanthanum oxide powder accounts for 0.5-2% of the mixed powder by mass percent;

step 2: fully mixing the mixed powder in an argon atmosphere to obtain a fully mixed powder; and

step 3: conducting 3D printing by using the fully mixed powder obtained in step 2 as a 3D printing material to obtain the nano-lanthanum oxide reinforced tungsten-based composite material.