Abstract: A method of manufacturing a shaped article includes a powder layer forming step of forming a powder layer formed by spreading a metal powder having an average particle diameter of 1 ?m or more and 10 ?m or less and an average circularity of 0.70 or more and 1.00 or less, a binder solution supplying step of forming a bound layer in a predetermined region of the powder layer by supplying a droplet of a binder solution having a volume of 1 pL or more and 10 pL or less from an inkjet head at an ejection interval of 90 ?m or less while moving the inkjet head at moving speed of 0.1 mm/s or more and 20 mm/s or less with respect to the predetermined region, and an extraction step of extracting the bound layer from the powder layer to obtain the shaped article.

Abstract: A titanium sintered body has an average crystal grain diameter on the surface of more than 30 ?m and 500 ?m or less, and a Vickers hardness on the surface of 300 or more and 800 or less. In the titanium sintered body, it is preferred that crystal structures on the surface have an average aspect ratio of 1 or more and 3 or less. Further, in the titanium sintered body, it is preferred that the oxygen content on the surface is 2000 ppm by mass or more and 5500 ppm by mass or less. Further, in the titanium sintered body, it is preferred that titanium is contained as a main component, and an ?-phase stabilizing element and a ?-phase stabilizing element are also present.

Abstract: A titanium sintered body has an average crystal grain diameter on the surface of more than 30 ?m and 500 ?m or less, and a Vickers hardness on the surface of 300 or more and 800 or less. In the titanium sintered body, it is preferred that crystal structures on the surface have an average aspect ratio of 1 or more and 3 or less. Further, in the titanium sintered body, it is preferred that the oxygen content on the surface is 2000 ppm by mass or more and 5500 ppm by mass or less. Further, in the titanium sintered body, it is preferred that titanium is contained as a main component, and an ?-phase stabilizing element and a ?-phase stabilizing element are also present.