Under heating containment the steel or the stainless steel steel beforehand in fluorine content reactant gas atmosphere

摘要

PROBLEM TO BE SOLVED: To provide a method for filtering by which abrasion does not occur even when a large amt. of abrasive powder-contg. polymer compsn. is filtered through a metal filter and the filtered polymer compsn. does not blacken, and to provide a metal filter with excellent abrasion resistance for it. ;SOLUTION: In this method for filtering an abrasive powder-contg. polymer compsn. through a metal filter, the metal filter made of a metal nitride with a surface hardness of 800-1,100Hv and the thickness of the nitride layer of 4-100μm is used.;COPYRIGHT: (C)1997,JPO