The effect of surface-modified SiTiCO (Tyranno ) fiber on the tensile behavior of SiC-matrix minicomposites has been examined. Standard SiTiCO fiber and two kinds of surfacemodified fibers were used and the composites were fabricated by a polymer infiltration pyrolysis process. The strengths of the surface-modified-fiber-reinforced minicomposites were significantly improved compared to that of the standard fiber minicomposite. The scattering of tensile strength also decreased with the use of surface-modified fibers. The results demonstrate the achievement of SiTiCO-fiber-reinforced SiCmatrix composite by modifying the surface chemistry of the fiber.

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The nonmetallic susceptibility cell using Stycast 1264 is described. It withstood pressure up to 25 MPa at low temperature. The tensile strength of Stycast 1264 at room temperature was measured to be 56.0 MPa.