Inorganic article and circuit substrate

摘要

An inorganic material-based article comprising inorganic material-based ultra-fine long fibers having an average fiber diameter of 2 mu m or less, and composed mainly of an inorganic component, wherein the inorganic material-based ultra-fine long fibers are collected and contacting surfaces of the inorganic material-based ultra-fine long fibers are bonded to each other not via an adhesive is disclosed.