PROPERTIES AND PRACTICAL RESULTS OF TUNGSTEN CARBIDE COATING PRODUCED BY LOW TEMPERATURE CVD PROCESS

摘要

In forming tungsten carbide layer by low temperature and vacuum CVD, uniformity of film thickness, adhesion and gloss achieved when the effective zone of coating set is increased to ∅450 × 1,100 mm is described. Characteristics of tungsten carbide layer are evaluated and compared with other materials. Some practical applications to the mechanical parts of plastic injection molding machines are introduced.