Scratch Test of TiC and TiN Films Deposited on WC-Co Alloys

Evaluation of fracture strength of TiN thin films deposited on WC-Co substrate

To evaluate the fracture strength of TiN thin films deposited on the hard metal substrate WC-Co, and to investigate the influence of the deposition conditions (bias voltage VB) on the fracture strength of TiN thin films, the sphere indentation test was carried out to determine the ring crack initiation strength σf,m in TiN thin films deposited on two kinds of WC-Co substrates differing in hardn...

The Electrical Properties of Thin Films of TiN* and TiC*

Thin films of metallically conductive titanium mononitride and carbide were prepared by means of electron beam evaporation. The composition of the samples could be changed over appreciable ranges by introducing nitrogen in the system or adding carbon to the pure starting material, respectively. The transport properties of the resulting compounds were studied as a function of nonstoichiometry an...

COMPARISON OF PROPERTIES OF TiN/TiCN AND PLASMA NITRIDING/TiCN FILMS DEPOSITED ON THE TOOL STEEL BY PULSED DC- PACVD

In this work, TiN/TiCN & PN/TiCN multilayer films were deposited by plasma- assisted chemical vapour deposition (PACVD). Plasma nitriding (PN) and TiN intermediate layer prior to coating leads to appropriate hardness gradient and it can greatly improve the mechanical properties of the coating. The composition, crystalline structure and phase of the films were investigated by X-ray d...

Growth of TiN on WC surfaces

TEM INVESTIGATIONS OF WC-Co ALLOYS AFTER CREEP EXPERIMENTS

Carbide tungsten cobalt alloys were deformed in compression or in three point bending in a temperature range 1000-1350°C and in a stress domain 30-1000MPa. In these conditions, the stress exponent n of WC-CO alloys is a function of only the cobalt volurnic ratio and tends tow rds n = 1 for pure B carbide. The apparent activation energy is 550 kj mole. T.E.M. investigations on pure carbide defor...