抄録
The thermal fatigue characteristics of hot die steel samples coated by the film of TiN, TiC, TiCN, TiC-TiN, TiC-TiCN-TiN, W2C or TD(VC) process have been studied by means of thermal fatigue test, erosion test, X-ray probe microanalysis and scannning electron microscopy. The samples were prepared using the CVD or TD(VC) processes. In the erosion test using a molten bath of aluminium, the TiC and TiC-TiN coated samples showed more effective erosion resistance than the other coated samples. The number of total cracks per area for the TiN and TiC-TiCN-TiN coated samples was smaller than the other coated samples during the thermal fatigue test. The growth of TiN was found in the matrix of the TiN coated sample after the thermal fatigue test.
