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Study of Heat and Corrosion Resistances of In-Situ TiC_p/Fe and VC_p/Fe Composites

Author: LiCheng
Tutor: SuGuangCai
School: Guangxi University
Course: Materials Processing Engineering
Keywords: In situ preparation process Titanium carbide particles Vanadium carbide particles Iron-based composite materials Heat resistance Corrosion Resistance
CLC: TB33
Type: Master's thesis
Year: 2008
Downloads: 124
Quote: 0
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Abstract


In accordance with the principles of the situ method prepared the TiC p < / sub > / the Fe and the VC p < / sub > / Fe composite materials and their heat resistance and corrosion resistance were studied . experimental data and theoretical basis for the practical application of the material . The prepared the TiC p < / sub > / the Fe and the VC p < / sub > / Fe composite organization and performance measurement results show that : the TiC p / Fe the the VC p < / sub > / Fe composite reinforcing particles pearlite matrix and TiC ( VC ) , and enhance the more uniform distribution of particles in the matrix ; TiC p / Fe , the VC p / Fe composite material strength high hardness , low plasticity toughness . Heat resistance tests showed that the conditions of 800 ° C and 900 ° C , the VC p / Fe composite antioxidant properties than TiC p / Fe composite good and both oxidation resistance are much higher than the 45 steel and HT250 ; in 750 ℃ ??the VC p / Fe composite anti - growth performance than TiC p / Fe composites slightly better , both anti- growth performance were higher than the 45 steel and HT250 material ; material as the temperature increases from 300 ° C to 700 ° C , relative to the 45 steel and HT250 the TiC p / Fe , the VC p / Fe composite high-temperature hardness the decrease is small , the trend is relatively flat , showing good resistance to high temperature softening . Corrosion resistance test showed that at 25 ° C and 85 ° C. The 0.1 % H of 2 < / sub > SO 4 < / sub > , 0.1 % NaOH , 20 % NaCl three solution static soaking conditions , VC p / Fe composites corrosion resistance than TiC p / Fe composite good, and both corrosion resistance decreases with increasing temperature , and the corrosion resistance of the two composites are significantly better than the 45 steel and HT250 materials of .

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