Particle compositions and related methods and uses to form sintered silicon carbide bodies

A method of forming a low porosity inorganic sintered body, the method comprising:

• using feedstock composition comprising inorganic particles having a multi-modal particle size distribution, the feedstock composition comprising:
• from 10 to 30 weight percent of a powder composition having a multi-modal particle size distribution based on the total weight of the feedstock composition, the powder composition comprising
• a collection of irregular fine particles having a fine particle size distribution and an average fine particle diameter (D50 value), and
• a collection of irregular coarse particles having a coarse particle size distribution and an average coarse particle diameter (D50 value) that is in a range from 4 to 7 times the average fine particle diameter, and
• from 70 to 90 weight percent binder composition, based on the total weight of the feedstock composition;
• forming the feedstock composition into shaped precursor body that comprises solidified binder composition and the inorganic particles;
• and
• heating the shaped precursor body to a temperature that causes the irregular fine particles and the irregular coarse particles to become fused together to form the inorganic sintered body.