Carbon component with controlled vibration

A method for making a component comprising:

• providing a 2.5D or 3D preform formed of polyacrylonitrile carbon fibers;
• then performing a first densification to form a carbon composite, with a density of the composite between 1.60-1.75 g/cm3;
• then performing a first hardening of the carbon composite by carbonization and/or graphitization at a temperature range between 1300° C.-3000° C.;
• then machining the carbon composite to form a shape;
• then performing a second densification;
• then performing a second hardening, wherein a density range of 1.75-2.60 g/cm3 is achieved;
• and
• then final machining the carbon composite to form a final shape of the component;
• wherein both the first and second densifications are performed using one of chemical vapor infiltration and pitch infiltration, if selected, the chemical vapor infiltration including rough laminar pyrocarbon, and if selected, the pitch infiltration including mesophase pitch;
• wherein the second hardening is performed using one of carbonization, graphitization, or silicon melt infiltration;
• wherein the final shape is a shape of a piston for a valve.