| Budget Amount *help |
¥1,800,000 (Direct Cost: ¥1,800,000)
Fiscal Year 1993: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1992: ¥1,300,000 (Direct Cost: ¥1,300,000)
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| Research Abstract |
In order to obtain fundamental information on TiC coating on carbon steel using Pb-Ti melt, solid state reaction of S15C, S25C, S35C, S45C, S55c and SK5 specimens in molten Pb containing 0.1 to 5 mass% Ti at 1173 to 1373 K has been investigated. A dense and uniform TiC phase layr having vikers hardness of 3000-3500 was obtained on the surfaces of the specimens, although the TiC layr formed in molten Pb containing more than 1 mass% Ti was covered with a porous Ti_2PbC phase layr having vikers hardness of about 100. Thickness of the TiC layr increased with increasing Ti content of molten Pb, C content of the specimens, annealing time and temperature, while any definite relation could not be found between thickness of the Ti_2PbC layr and annealing conditions. It is concluded that TiC layr grows at the interface between TiC layr and molten Pb or Ti_2PbC layr and that the growth rate is controlled by diffusion process of C atoms in TiC layr.
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