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With the rapid development of industrial technology, people’s demand for materials is getting higher and higher. The materials used should have not only high strength, high hardness but also good corrosion resistance. For example, the chemical industry and machinery require materials to have good chemical stability, strong corrosion-resistance, but also high strength and hardness to withstand the dual effects of chemical corrosion and mechanical wear. Although there are many kinds of corrosion-resistant materials, However, the comprehensive indexes of hardness, strength and corrosion resistance make it imperative to study corrosion-resistant cemented carbides.

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1950 ?? ??? ?? ???????? ????????? ???????? ???????? ?????? ??? ?? ???? ??????? ???? ????? ?? ??????, ???????? ????????? ?????????? ?? ??? ????????? ??? ??????? ???? ?? ???? ??: WC-??????, Cr3C2-?????? ?? TiC-??????? ?? ???? ??? ?????? ??? ?? ???????? ?????????? ???? ????? ?? ??? ??? We ?? TiC ?? ??? ????

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??????? ???? ?????????? ???, ???????? ???????? ?? ?????? ?? ??????? ?????? ?? ???? ?????? ???? ??? WC-?????? ???????? ???????? ?? ?????? ????? ?? 80-95 HRA ???? ??, ?? ?????? ?? ??????? 6-25% ???? ??? WC-?????? ???????? ???????? ?? ????? ??????? ?????? ???? ?? ??, ?? 20-400 C ?? ???? ??? ????? ?? ???? 35-60% ??? ??? ?????? ?????? ????? ?? ???? 1/2 ?? ????? ?? 1/3 ???

Cr3C2-?????? ???????? ???????? ????? ???????? ???????? ?? ??? ???????? ???????? ?? ?? ?????????? ???? ?? ?? ??, ????? ???? ????????? ???? ?? ???? ?? ???? ????? ??? ????????, ???????? ?? ???? ?????? ?????? ?? ?????? ??, ????? ?? ????????? ??? ??? ????? ???? ?? ????? ?? ???? 600-700 ????? ?? ????? 1OOMPa ?? ???? ?? ???? ???

????????? ????????-?????? ???????? ????????, ?? ????? ??? ?? ????????? ???????? ?? ??? ???? ??? ?? ???? ?????? ???? ???? ???, ????? ??? ?? ????? ?? ???????? ?? ???????-???? ?????????? ?? ??? ????? ??? ???? ???? ???????, ???? ????????? ?????? ?? ???? ???? ??? ?? ???? ?????? ??? ?? ????? ???? ???? ??? ???

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???????? ???????? ?? ???????? ???????? ???? ?? ?? ???????? ??? ?? ?????? ???? ??? ??????? WC, WC-TiC ?? ???????? ???????? ?? ??? ?? ???????? ?????? ??? 1926 ??? WC-Co ????? ????????? ?? ???????? ?? ??? ??, ??????? ????? ?? ??? ?????? ?????? ??? ???

???????? ???????? ??? ??????? ???????? ???? ?????????? ???????? ????? ??? ???? ???? ?? ?? ?? ???????? ????? ?? ??? ??? ??????? ??? ??? ??? ???????? ??? ???? ??? ?? ??? ????? ?????????? ???? ?? ?? ???? ??? ?? ??? ????? ???????? ????? ???? ??, ????? ??????? ???????? ???????? ??? ???????? ???????? ??? ???? ???, ????? ???????? ??? ?? ??? ??? ??????? ?? ???????? ???????? ???? ???? ???

?????? ?? ??? ??? ???? ?? ???????? ???????? ??? ??????? ?? ????? ??? ???? ????? ??? ??, ????? ?????? ?? ??? ??? ??????? ?? ???? ???? ?? ????? ???? ?? ???? ?????? ??? ?? ???? ???? ??? ??? ????? ??????? ????? ?? ?????????? ?????? ??, ????? ???? ???????? ??? ??????? ?? ???? ???? ????? ?? ??????? ?? ????????? WC ?? ????? ??? ???? ??, ????? ????? ???? ?? ???????? ??? ???? ???? ?? ?????? ?? ?? ???? ?? ???, ????????? ??? ?????????? ???? ?????? ???? ???? ?? ??????, ??????, ???? ?? ????? ?? ???????? ??? ????? ???? ?? ???? ???

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?? ?????? ?? ???????? ???????? ?? ????? ???-????? ???? ????? ??????? ????????, ????? ???? ????? ?? ????? ?? ??? ????????? ???????? ???????? ????? ?? ??? ??? ???? ???? ??? ?? ??? ??????? ???? ?? ???? ???? ?????? ??????? ???????? ???? ?? ??? ???? ???????, ?????? ???? ?? ??? ?? ????? ?? ???? ??? ?? ?????? ?? ???????? ???????? ?? ????? ????? ????, ???? ?????? ?? ???? ?????? ?? ????? ?? ??? ???? ?? ???? ??? ???? ???????, ????? ?? ??? ?? ????? ????? ?? ??? ????, ????? ??? ???-????? ???? ?????????? ?? ??? ?? ????? ?? ???? ???

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?? ?????? ?? ???????? ???????? ??? WC ??? ?? ???????? ?? ????? ??? ??, ?? ????? ?? ??????? ?????? ??? TiC ?????? ???? ??, ????? ????? ????? ??? ?? ????? ?? ????? ?? ??? ???? ???? ??? ????? ????? ???, ????? ???????? ????? ???? ??? ??????? ????? ????? ?? ????? ?? ??? ????? ?? ???? ???? ??? ?? ????? ????? ?? ???-????? ????? ?? ??? ????? ?? ???? ???? ??? ???????? ?? ???? ?????? ????, ?? ????? ?? ??????? ?? ??? ?????? ?? ??? ????? ?? ????-???? ????? ???? ?? ???? ?? ????? ????????????? ????? ?? ??????? ?????? TiC ???? ??????? ??? ?? ?????? ?? ?? ?? ?? ???? ?? ?? ??????? ????? ?? ??? ?? ??? ???? ??, ???? TiC ???? ????? ???? ?? ????? ?????? ??? ????? ?? ???? ???

Titanium carbide has a density of 4.9g/cm3, much lower than tungsten carbide’s density of 15.6g/cm3. So the light-alloy can be obtained by choosing WC-TiC compound carbide as a hard phase.

???? ?????, ???? ??? ?? ??? ??? ??????? WC-TiC ????? ???? ?? ?????? ??? WC ????? ???? ?? ????? ??? ???? ??, ?? WC-TiC ??? TiC ??????? ?? ?????? ?? ??? WC-TiC ????? ???? ?? ?????? ??? ???? ??? ???????, WC-TiC ??? ?????? ??? ?? ??????? ?? ???? ???????? ??? ?????? ???? ??? ?? ???? ???? ???? ?? ???? ?? ?? WC-TiC ????? ???? ?? ?????? ?? ??????? ?? ???? ???????? ??? ?????? ???? ??? ?? ???? ???? ???? ?? ???? ??? ???? ??? ?? ??? ??? ????????? ?? ????? ?? ????? WC ????? ????? ???? ???

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