C12 Carbon Tapes are thin flexible sheets made with specially processed, ultra-pure carbon. C12 thermally fugitive Carbon Tapes are used to form embedded channels, cavities, and MEMs structures in multilayer ceramics such as LTCC and HTCC substrates. C12 Carbon Tapes have the highest solids loading available, which results in very low sagging and crack-free laminates after firing. Other thermally fugitive pastes and materials with lower carbon loading and excessive binder content often cause stress, warping, and damage to delicate structures during firing. C12 Carbon Tapes can be a cost effective alternative to using removable inserts such as platinum or latex to create structural features. C12 Carbon Tapes do not smudge, and are easily punched or cut into complex shapes with simple tools or with low- power laser trimmers. C12 Carbon Tapes are designed to be compatible with all major commercial LTCC tape and screen printable systems.
Ultra-pure C12 Carbon Tapes are engineered to burn out cleanly in air atmospheres. C12 Carbon Tapes begin to rapidly oxidize at 600C, just as the LTCC ceramic matrix sinters, leaving behind well-defined features such as cavities and channels. C12 Carbon Tapes create precise, stress-free structures, unlike conventional fugitive materials such as waxes and polymers, which often leave residue and result in stress related deformation.