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1. What is a particulate composite?
2. What is a cermet? What is the role of WC and Co in a cermet?
3. Calculate the density of a cemented carbide, or cermet, based on a titanium matrix if the composite contains 50 wt% WC, 22 wt% TaC, and 14 wt% TiC. (See Example 17-2 for densities of the carbides.)
Example 17-2
Cemented Carbides
A cemented carbide cutting tool used for machining contains 75 wt% WC, 15 wt% TiC, 5 wt% TaC, and 5 wt% Co. Estimate the density of the composite.
The point C on the connecting rod is 200 mm from the crankpin at A. At the position shown determine the velocity of the piston, the velocity of the point C and the angular velocity of the connecting rod.
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