The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 24, 2020
Filed:
Dec. 26, 2016
Technology Research Association for Future Additive Manufacturing, Tokyo, JP;
Yoshiki Hashizume, Osaka, JP;
Isao Murakami, Osaka, JP;
Kenji Muramatsu, Osaka, JP;
Kenta Ishigami, Osaka, JP;
Abstract
The present invention provides a robust metal lamination-shaped object containing aluminum and having no defect. A metal powder used for forming this metal lamination-shaped object is an aluminum-based powder having a volume-based 50% particle diameter larger than or equal to 10 μm and smaller than 100 μm when a particle diameter distribution is measured by a laser diffraction-scattering method, a specific surface area smaller than or equal to 0.5 m/g, and an oxygen amount larger than or equal to 3 mg/mand less than or equal to 10 mg/mper unit surface area. A relationship between a hydrogen amount (X ml in standard state) per 100 g of the aluminum-based powder and a specific surface area (Y m/g), and a relationship between the hydrogen amount (X ml in standard state) and an oxygen amount (Z wt %), are respectively in accordance with formulas: X/Y<151 and Z/X>0.0022. A metal lamination-shaped object, that is lamination-shaped by a three-dimensional lamination-shaping apparatus in a powder bed fusion type using the above metal powder, has a hydrogen amount less than or equal to 3 ml in standard state per 100 g, and a relative density more than or equal to 99%.