A hard substance used to remove surface material by grinding, lapping, or polishing, or to make cutting wheels or disks. Grinding wheels are usually made by mixing abrasive grains with clay or feldspar and firing them; unfired wheels use synthetic resins, rubber, or shellac as binders. The abrasives are commonly silicon carbide and fused alumina, sometimes diamond or boron nitride (BN). Source: Morikita Publishing "Chemical Dictionary (2nd Edition)" Information about the Chemical Dictionary 2nd Edition |
あらすり(grinding),ラッピング(lapping),磨き(polishing)で表面物質を取り去るための物質,または切削用の砥石や盤をつくるのに用いる固い物質.研作砥石は通常,砥粒(grain)を粘土,長石と混合して焼成してつくる.焼成しない場合は結合剤として合成レジン,ゴム,あるいはシェラックを用いる.砥粒には一般にSiCおよび溶融アルミナが,ときにはダイヤモンド,窒化ホウ素BNが使われる. 出典 森北出版「化学辞典(第2版)」化学辞典 第2版について 情報 |
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