Powder for three-dimensional shaping and three-dimensional shaped object

Abstract

An object of the present invention is to provide a powder for three-dimensional shaping that allows shaping a three-dimensional shaped object having excellent mechanical strength. The powder for three-dimensional shaping provided by the invention includes non-hydration reactive base particles and water-soluble bonding particles. Upon preparation of a slurry through addition of 50 parts by mass of water to 100 parts by mass of the powder, the viscosity of the slurry after 1 minute from addition of the water ranges from 30 mPa·s to 8000 mPa·s.

What is claimed is: 
     
         1 . A powder for three-dimensional shaping, comprising non-hydration reactive base particles and water-soluble bonding particles,
 wherein upon preparation of a slurry through addition of 50 parts by mass of water to 100 parts by mass of the powder, the viscosity of the slurry after 1 minute from addition of the water ranges from 30 mPa·s to 8000 mPa·s.   
     
     
         2 . The powder for three-dimensional shaping according to  claim 1 , wherein the average particle size of the non-hydration reactive base particles ranges from 1 μm to 80 μm. 
     
     
         3 . The powder for three-dimensional shaping according to  claim 1 , wherein the content of the water-soluble bonding particles ranges from 1 part by mass to 20 parts by mass with respect to 100 parts by mass as a total amount of the powder. 
     
     
         4 . The powder for three-dimensional shaping according to  claim 1 , wherein the water-soluble bonding particles are made up mainly of at least one type selected from the group consisting of thermoplastic resins, thermosetting resins and polysaccharides. 
     
     
         5 . The powder for three-dimensional shaping according to  claim 1 , wherein the non-hydration reactive base particles are made up mainly of a metal containing at least one element selected from the group consisting of Al, Zr, Ti, Zn, Ni and Fe, or an alloy of the foregoing elements. 
     
     
         6 . The powder for three-dimensional shaping according to  claim 1 , wherein the non-hydration reactive base particles are made up mainly of an oxide containing at least one element selected from the group consisting of Al, Zr, Ti, Zn, Ni, Fe and Si. 
     
     
         7 . A three-dimensional shaped object, which is formed by solidifying a mixture of a water-containing shaping solution with the powder for three-dimensional shaping according to  claim 1 .