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

Properties and Practical Results of Tungsten Carbide Coating Produced by Low Temperature Cvd Process

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 4450 x 1,100mm 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 i...

Nanosized tungsten carbide synthesized by a novel route at low temperature for high performance electrocatalysis

Tungsten carbide (WC) is a widely used engineering material which is usually prepared at high temperature. A new mechanism for synthesizing nanoscaled WC at ultralow temperature has been discovered. This discovery opens a novel route to synthesize valuable WC and other carbides at a cost-efficient way. The novel formation mechanism is based on an ion-exchange resin as carbon source to locally a...

High-Quality Tungsten Films by Hotwire-Assisted CVD/ALD at Low Temperature

There is a growing interest in atomic layer deposition (ALD) of metals for ultra-large-scale integrated circuit (ULSIC) manufacturing. Radical-enhanced ALD (REALD) utilizing plasma (PEALD) has been proposed to grow a number of metals [1]. In our work, we investigate an alternative approach to REALD without plasma, i.e. replacing plasma by a hot (up to 2000 oC) tungsten (W) wire. In this so-call...

Tribological Properties of B4C-Ni Cermet Coating Produced by HVOF Process on the Surface of 4130 Steel

In this research, B4C-Ni cermet coating was sprayed on the surface of 4130 steel from B4C and Ni feed-stockpowders using high velocity oxy-fuel (HVOF) method. In order to characterize the tribological behavior of thecoating, ball on disk wear tests were done at the ambient temperature and under the loads of 1, 3 and 5 N.Phase analysis of the coating after spraying was studied ...

Letter: Electronic and catalytic properties of tungsten carbide.