???????? ???????? ?? ??? ?? ???????? ???????? ??, ?? ???????? ???? ?? ???? ???? ?? ???? ????? ?? ????? ???? ??????? ????????? ?????? ????? ???? ??? ???? ????? ?????? ?? ???? ?? ????, ?? ?? ????????? ??? ?????? ??? ?? ????? ???? ???? ??? ???? ???????? ??????? ?? ???? ?????? ???????? ?? ???????? ???????? ?? ???????? ?? ??? ???? ?? ?????? ?? ??? ??, ?????? ?????? ???????? ??????? ?? ???????? ???? ????? ?????????? ?? ???? ???? ??????? ??? ????? 30 ?????? ???, ?? ????????? ?? ????????? ?????? ??????? ?? ??????????? ???????? ??? ??? ?? ???????? ???????? ?? ?? ???????? ??????? ?? ???

WC ????

WC-??

??????? ???????? ??? ?????? ??? ?? ???????? ???? ???? ???? ??????????? ?????? ??????? ??? WC Co ??????? ?? ???? ?????? ?? ?????? ???? ??? ??? ??? ?? ????? WC ????? wettability ?? ????? ?? ????? ??? ???? ?????, ???? ?? ????? 13.2 ??? ?????? ??? ??, ??? ?? ????? ?? ???? ?? ??????? ??? ???? ????? ?? ???? ????

????? ?? ?????-???????? ???????? ?? ??????? ???? WC Co ????? ?? ?????? 13.3 backscatter ?????????? ????????????: (?), (??) ?? 8; (c), (d) M8; ?? (?), (??) ?? 8?

???????? F8, M8 ?? C8 ????? ?? ???? ????? ??? ?? ????? ?? ????????? ?????????? ??????? ????? ?? ???? ??? ?? ??? ??????? ??? ??????? ??????? ????? ???? ??? ?? 8 ????? ??? ?????????? ?? ??? ???? ?????? ??, ???? ?? 8 ?? ?? 8 ????? ??? ??????? ?? ??? ?????????? ???? ???? ?????? ?????? ???? ????? ??? ?? ??? ??, ??? ????? ?????? ?????? ?? ???? ?? ??????? ???, ?? ?????? ?? ????? ?? ???????? ??????? ??????? ?? ?????? ???????? ???? ?????? ?????? (????) 1500 ?? 2000 ???? 30 ?? ????? ???? ??, ?? ???????? ?? ?????? 7 ?? 15 ????? ?? 1/2 ?? ???? ??? ?? ?????????? ???????? ???????? ??????, ???????????????? ?? ???????? ??????? ?? ????? ???

?? ??? ?? ????? ???, ?? ???? ????? ???? ???? ??, ???? ?? ???? ?????? ?? ????? ?? ???????? ??? ????? ???? ??? ??? ?? ??????? ??? ????? ???? ????, ???????? ?? ?????? ???? ?? ???? ????, ????? ?? ?????? ?? ????? ?? ???????? (???? ?? ???, 2007)? ?????, ????? ???????? ??????? ???? ?? ???, ???? ???? ???? ???????? ?????????? ?? ????? ???? ?? ????? ???? ????????? ???

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

WC-??

??????? ?? ????? ??? ????? ????? ?? ???? ??? ?? ?? ????? ???? ??????? ??? ???? ????? ??? / ???????? ????????, ???? ?????? ????? ?? ???? ??????? ??? ????? ?? ???????? ?? ????? ????? ?? ??? ???? ?? ???? ??? WC Co ????? ???? ?? ????? ???, ??????? ?? ???????????? ?? ??? ??????? ???? ????????? ??? ????? ??? ?? ??? ???? ??, ????? ???? ????? ????????? ????????? ?? ??? ?? ?????? ???? ?? ??? ??? ???? ???? ??, ????? ???????????? ???? ??? ?? ????? ???? ???? ???

WC-???

Ag ?? ???? WC ?? ?? ??? ?? ??? ????????? ??????? ????? ??? ?????? ??????? ?? ???????? ?? ???, WC ?? ????? ???????? ??????? ??? ??? ???? ???? ??, ???? ??? ?? ???????? ??????? ?????? ???????? (RC) ?? ??? ????????? ?????? ?? ???? ??? ?? ????? ???? ????? ?? ?? WC Ag ??????? ?? ??????????? Ag ??????? ?? ?????? ?? ??? ?? ???? ??, ?? Ag ??????? ?? ?????? ?? ??? ?????? ?? ?? ???? ??, ?? WC ?? Ag ?? ?????? ?? ??? ???? ???? ?? ???? ???? ??? ???? ?????, ???? ????????? ???? ??? ???? ?? ?? ????? ?????? ???????? ???? ???

?????? 13.4 ????? ?????? ???????? ??? ??????? ?????? ???????? (????) ?????? ??

??????? ????? ??????? ?? WC ?? ???? ?? ??? 11e50 ????, ??????? ??????? ?????????? ?? RC 10 ???????? ?????? ?? ??? ????? ???? ???? ??? ????? ?? ?????? ???????? WC ??? 50-55 wt% (??????? ?????? 60% ?? 64.6%) ?? ??? 4 ???? ?? ?? ???? ?? ??? ?? 55-60 wt% (??????? ?????? 64x% ?? 69%) ?? ??? WC ?? ?? ???? ?? ??? ???? ??? 0.8 ?? 1.5 ????? ?????, ?? ????? ?? ????????? ?????? ?? ????????? ???? ??, ???? ??? ????????? ???? ??? ?? ????? ??? ??? ??????? ????? ?? ???, 1.5 ?? 4 ???? WC ?? ???? ?? ??? ?????? ???????? ??? ??? ???? ??, ?? ???? ???? ?? ?? ??????? ???? ???

WC-???

????????? WC Co ?? ????? ???????? ??????? ???? ?? ??? ?????? ?? ????? ???? ?? ??? ??????? ???????? ?? ????? ?? ??? ???, ??????? RE ???? ?????? ?????? ?? ????? ?????? ?? ???? ??

????? 13.4 11 ?? 50 ?? ????? ????????? ????????? ?? ?????? ???????? ?? ??? ??????? ??? ??????? ?? ????????? ?? ???? ?? ??? ??????? ?????? ???????? ?? ?????? ?? ?? ?? ??? ????????? ????? (20% ??? ???????) ?? ???????????????? ????????? ?? ??????, ?? ?????? ?? ?? ????????? ???? ?? ??? ??? ???? ??? ??? ?? ?????? ?????? ?? ??????? ???? ???, ?? ?????? ????? ???? ?? ?????? ??? ????? ???? ?????????? ?? ????????? ?? ??? ??? ?? ????? ???? ?? ??? ??? ?? ???????? ???? ???? ?????? ?????? ?? WC Co ?? ????????? ?? ???? ???????????? ????? ????? ?? ??????? ?? ??? ????? ???? ?? ????? ???? ???? ??? ?? ????? ???????? WC ?? Re ????? ?? ??? ?? ???????? ??? ???????? ????????? ???? ??, ?? HV ?? 2400 kg / mm ~ 2 ?? ???? ???? ?? (WC-Co ?? ??? 1700 kg / mm ~ 2 ?? ????? ???)

????????? ?????????????

WC-feal

In the past few decades, intermetallic compounds as ceramic adhesives have attracted people’s attention. Iron aluminide has excellent oxidation resistance and corrosion resistance, low toxicity, high hardness, good wear resistance, high temperature stability and good wettability. It is thermodynamically suitable for WC as binder. The hardness and fracture toughness of WC FeAl and WC Co are basically the same. The hardness and wear resistance of WC Co alloy are similar to those of conventional WC Co alloy. It can be considered that if the grain size can be optimized, it is possible to replace the traditional WC Co. The particle size distribution curve of WC FeAl mixed powder prepared by different ball milling and / or drying processes is shown in Figure 13.5. The three curves in Figure 13.5 have bimodal distribution. In Figure 13.5, the left peak of the smaller particle size corresponds to the left peak of a single WC particle. The correct peak value of larger particle size corresponds to the peak value of FeAl fragments containing some WC particles. When the correct peak moves, the left peak does not depend on the grinding and / or drying process. The correct peak of D-R powder (dehydrated ethanol as solvent for rapid drying) shifts to the corresponding peak of the other two powders.

??????? ????? ??????????? ?? ????? WC-FeAl ??????? ????? ?? 13.5 ?? ???? ?? ??????

WC-?????? ?? ?????

WC-MgO

WC-mgo ??????? ??????? ?? ?????? ??? ?? WC ????????? ??? MgO ???? ?? ???????? ???? ?? ???? ????? ???? ??? ??, ????? ?????? ?? ???? ?? ?????? ????? ?? ?? ?????????? ?? ?????? ??? ???? ????? ???? ??? ?????? ?????? ?? ?????? ???????? ??, ????? ?? ????? ???? ?? ????? ???, ?????? ??????? ???? ?? ?? ?????? ?? ?????? ???? ???? ???? ??? ?????? ??????? ??? ????, Cr3C2 ?? ???? ???? ????? ???????? ?? ?? ???? ?????? ?? ?????? ?? ? ???? sintering ????????? ??? ???? ?? ????? ?? ????????? ???? ?? ???? ??, ????? ??????? ?? ???????? ????? ??? ?? ????? ?? ???? ???

WC-Al2O3

???? ?? ?????? ???? ???? ????? ?? Al2O3 ?? ????? WC ?? ??? ?? ????? ??????? ?? ??? ??? ???? ???? ??, ?? ???? ??????, ???? ???????? ???????? ?? ????? ????? ?? ?????

?????? ?? ????????? ???? ?? ???? ???? ?? ??? ?? wc-40vol% Al2O2 ???????? ?? ???????????????? ?? ???????? ????? ?? ?????????? ?????? ????? ??? ???????? ?????? ?? ???????? ??? ?? ?????? ?? ???, ??????? ????? ?? ?? ???? ??? ?????? ???? ??? ??? ???, ???? ???? ?? ???????? ??????? ?? ????? ???? ??? ???? ??? ?? ??? ?? ???? ???? ????? ??? ?? ???????????????? ?? ????? ???????? ?? ????? ?????????? ?? ???????? ?? ??? ???? ??? Wc-40vol% ?? 2O 3 ??????? ???, ????? ???? ????? ???????? ?? ??????? ?????? ?? ????? ??? ?? ???? ?????? ?? ??? ???? ?? ?? ???? ???? 20e25gpa ?? ???????? ?????? 5e6mpa.m1 / 2 ???

?????? 13.6 ????????? ??????? ?? ??? ??????, ???????? ??????? ?? ????????? ???????? ???? ?? ??????? ????????? ?? ??????? ??? ?? ????? ???? ???? ????? ?? ?? ????? ??????? ??? ?? (??? ?? ???, 2015) ?? ???? ????? ???? ????? ????????? ??? ???? ???? ?????? ?? ???? ?? ???????? ?? ?????? ???? ??? Al2O3 ?? ????? ???????? ?? ?????? ??? ????? ???? ??, ????? ????? ????????? ?? ?????? ????? WC ?? ????? ??? ?? ???? ??, ?? wc-al2o3 ????? ?? ?????? ?? ?? ???? ??? ????? 13.6 ??? ??????? ?????? ????? ??? ?? ???????? ??? ? ???? ????????? ??????? ?? ?????? ???? ???, ????? ??????? ??????????? ?? ??????? ????????? ?? ????? ?? ?? ?????? ???? ???? 

WC abrasives

WC cBN

??????? CBN ??? ???? ?? ??? ???????? ??????, ????? ??????? ?? ??????????? ??????? ??, WC Co ??? CBN ?? ?????? ?? ??????? ?? ????? ?? ????????, ?????? ?? ???????? ????? ??? ????? ?? ???? ??? WBN ????????? ??? CBN ?? ????? ???? ?? ???, ????? ????? ?? ??????? ???? ?????? ???? ?????, ???? ???????? ?? CBN ???? ?? ???????? ?????? ????? ???????? ??????? ??????? ?? ?? ???? ??? CBN ?? ????????? ??? ?? ????? ?????? CBN ?? hBN ??? ???????? ?? B ?? N ?? ??? ????? ???????? ????? ???, ????? ???????????? CBN ?? ?????? ???????? ?? ?? ????????? ?????? ???? ???

WC ????

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