- Shay Harrison, Free Form Fibers, Saratoga Springs, New York
Laser-driven chemical vapor deposition (LCVD) constitutes the foundational science behind a cutting-edge technology for forming high-performance inorganic fibers. These fibers are needed for a range of composite material system applications. Free Form Fibers (FFF) has spent 7 years developing its Fiber Laser Printer (FLaP) to produce long, continuous, core-less fibers in a parallel array format. Subsequent processing in the same FLaP can apply a uniform, homogenous coating on the fiber array. One of the significant advantages of LVCD is the capacity to draw upon decades worth of CVD literature to produce a vast array of material compositions. FFF has focused a great deal of effort on producing silicon carbide (SiC) fibers for next generation high-temperature ceramic matrix composites (CMCs) as well as characterization of a range of the SiC fiber material properties. Additional materials have been manufactured, such as boron fiber as a lightweighting replacement for carbon fiber and custom fiber compositions like silicon-carbon-boron fiber, with tensile strength values on the order of 10 GPa. Potential refractory fiber-reinforced CMC systems are within reach as precursors are available for a range of high-temperature-capable fiber materials, including zirconium-, hafnium-, and tantalum-based carbides and diborides. FFF is also exploring the implementation of LCVD-based fibers in glass-CMCs, due to the capability of the FFF SiC fiber to withstand the glass matrix processing conditions as well as the variety of processing and economic advantages inherent to the G-CMC approach.
About the Speaker:
Shay Harrison is the senior materials scientist at Free Form Fibers, a high-performance fiber manufacturer located in Saratoga Springs, New York. Shay has been at Free Form for over 5 years, with duties centered on fiber property characterization, LCVD processing, and new fiber material development.