No. If you apply anything at all, it should be extremely minimal. The interface should be clean of oils, grits, paints, etc. to ensure it seats propperly. If it has lubricant on it, it will cause the arm to ride up on the tapers potentially too far.
The bolt should be greased or anti-sieze compounded and the bolt should be torqued to the specification. (usually 35-45 ft-lbs.). The importance of the measured torque wrench is often downplayed.