Microstructures of NbC-based cemented carbide
A technology of cemented carbide and hard phase, applied in the direction of wire drawing dies, manufacturing tools, other manufacturing equipment/tools, etc., can solve problems such as unsuitable and unfavorable TRS values
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[0067] Conventional powder metallurgy methods including grinding, pressing, forming, and sintering were used to manufacture various sample grades of cemented carbide in accordance with the present disclosure. In particular, (fully sintered) cemented carbide grades with the wt % compositions according to Table 1 were produced according to known methods. Grades A to E are comparative samples and Grades F to Q are in accordance with the present disclosure. All samples were prepared from powder materials forming the hard phase and the binder phase.
[0068] Each of the sample mixture grades A-E and grades F-Q was prepared from the hard component-forming powder material and the binder-forming powder. The following preparation methods correspond to grade K of Table 1 below with the following starting powder materials: WC 0.548 g, NbC 42.667 g, TaC 2.189 g, Mo 2 C 3.290g, Ni 7.130g, PEG 1.400g, ethanol 50ml. It will be understood by those skilled in the art that the relative amoun...
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