Structure for manufacturing cast article

Abstract

A structure for manufacturing a cast article includes an organic component, at least a portion thereof being an organic fiber. The structure has a mass reduction rate of 1 mass % or greater to less than 20 mass % when heated under nitrogen atmosphere at 1000° C. for 30 minutes. The cast-article-manufacturing structure includes an inorganic particle. The cast-article-manufacturing structure includes, as the inorganic particle, a first inorganic particle having a predetermined shape and/or physical property, and a second inorganic particle having a predetermined shape and/or physical property different from the first inorganic particle. In addition thereto or instead thereof, the cast-article-manufacturing structure has a maximum bending stress of 9 MPa or greater measured in conformity with JIS K7017, and a bending strain of 0.6% or greater at the maximum bending stress.

1 . A structure for manufacturing a cast article, the structure comprising:
 an organic component; and   an inorganic particle on a surface of the structure, the inorganic particle including at least a first inorganic particle, wherein: at least a portion of the organic component is an organic fiber dispersed on the surface of the structure and in an interior of the structure,   the inorganic particle is in the interior of the structure,   the structure has a mass reduction rate of 1 mass % or greater to less than 20 mass % when heated under nitrogen atmosphere at 1,000° C. for 30 minutes,   the structure has a maximum bending stress of 9 MPa or greater measured in conformity with JIS K7017, and   the structure has a bending strain of 0.6% or greater at the maximum bending stress.   
     
     
         2 . The structure for manufacturing a cast article according to  claim 1 , wherein
 the maximum bending stress is 9 MPa or greater and 50 MPa or less, and   the bending strain at the maximum bending stress is 0.65% or greater and 8% or less.   
     
     
         3 . The structure for manufacturing a cast article according to  claim 1 , wherein
 the inorganic particle includes a second inorganic particle,   the first inorganic particle is not a layered particle, and   the second inorganic particle is a layered particle.   
     
     
         4 . The structure for manufacturing a cast article according to  claim 1 , further comprising another organic component other than the organic fiber. 
     
     
         5 . The structure for manufacturing a cast article according to  claim 1 , wherein
 the first inorganic particle is spherical, and   an average particle size of the first inorganic particle is 1 μm or greater and 1,000 μm or less.   
     
     
         6 . The structure for manufacturing a cast article according to  claim 1 , wherein the inorganic particle has a melting point of 1,200° C. or higher and 2,500° C. or lower. 
     
     
         7 . The structure for manufacturing a cast article according to  claim 1 , wherein the mass reduction rate is 1 mass % or greater and less than 15 mass %. 
     
     
         8 . The structure for manufacturing a cast article according to  claim 1 , wherein the first inorganic particle includes mullite. 
     
     
         9 . The structure for manufacturing a cast article according to  claim 1 , wherein the inorganic particle includes one or two or more selected from aluminum oxide, silicon dioxide, and iron oxide. 
     
     
         10 . The structure for manufacturing a cast article according to  claim 1 , wherein the inorganic particle is one or more types selected from spherical particles and/or layered particles. 
     
     
         11 . The structure for manufacturing a cast article according to  claim 1 , wherein 50 pieces or more and 300 pieces or fewer of the organic fiber are present per 100 mm 2  on the surface of the structure for manufacturing the cast article. 
     
     
         12 . The structure for manufacturing a cast article according to  claim 1 , wherein the organic fiber on the surface of the structure for manufacturing the case article has an average fiber length of 0.5 mm or greater and 7 mm or less. 
     
     
         13 . The structure for manufacturing a cast article according to  claim 1 , wherein the organic fiber on the surface of the structure for manufacturing the case article has an average fiber diameter of less than 40 μm and 8 μm or greater. 
     
     
         14 . The structure for manufacturing a cast article according to  claim 13 , wherein a ratio of the average fiber length of the organic fiber to the average fiber diameter of the organic fiber present on the surface is 10 or greater and 260 or less. 
     
     
         15 . The structure for manufacturing a cast article according to  claim 1 , wherein the organic fiber includes one or plural selected from pulp fiber, fiber including polyester resin, and/or fiber including aramid resin. 
     
     
         16 . The structure for manufacturing a cast article according to  claim 1 , wherein the structure for manufacturing the cast article has a thickness of 0.2 mm or greater and 10 mm or less. 
     
     
         17 . A method regarding a structure for manufacturing a cast article, comprising:
 providing the structure for manufacturing the cast article; and   using the structure for manufacturing the cast article,   wherein:   the structure for manufacturing the cast article includes:
 an organic component, and 
 an inorganic particle on a surface of the structure, the inorganic particle including at least a first inorganic particle, 
   at least a portion of the organic component is an organic fiber dispersed on the surface of the structure and in an interior of the structure,   the inorganic particle is in the interior of the structure,   the structure has a mass reduction rate of 1 mass % or greater to less than 20 mass % when heated under nitrogen atmosphere at 1,000° C. for 30 minutes,   the structure has a maximum bending stress of 9 MPa or greater measured in conformity with JIS K7017, and   the structure has a bending strain of 0.6% or greater at the maximum bending stress.   
     
     
         18 . The method according to  claim 17 , further comprising another organic component other than the organic fiber, wherein
 the maximum bending stress is 9 MPa or greater and 50 MPa or less,   the bending strain at the maximum bending stress is 0.65% or greater and 8% or less,   the inorganic particle has a melting point of 1,200° C. or higher and 2,500° C. or lower, and   an average particle size of the first inorganic particle is 1 μm or greater and 1,000 μm or less.   
     
     
         19 . The method according to  claim 17 , wherein
 the inorganic particle includes a second inorganic particle, and   each of the first inorganic particle and the second inorganic particle is one or more types selected from spherical particles and layered particles.   
     
     
         20 . The method according to  claim 19 , wherein the inorganic particle includes one or two or more selected from
 aluminum oxide, silicon dioxide, and iron oxide.