Effects of proton irradiation on the microstructure and mechanical properties of Amosic-3 silicon carbide minicomposites

• 来源期刊: 材料科学技术（英文版）
• 年，卷（期）: 2019,（12）
• 页码范围: 2935-2941
• 页数: 7页
• 语种: 英文

摘要

One dimensional Amosic-3 silicon carbide fiber reinforced silicon carbide matrix composites (SiCf/SiC minicomposites) prepared by chemical vapor infiltration were irradiated with 2.8 MeV proton ions.The ion fluences were 1.0 × 1017 and 1.5 × 1017 cm-2 at room temperature and 300 ℃,respectively.The microstructure and mechanical properties were investigated before and after proton irradiation.Raman spectra showed no evident change in Amosic-3 fibers regardless of irradiation temperature,which is confirmed by high resolution transmission electron microscopy observation.Pyrolytic carbon interphase showed slightly expansion after 300 ℃ irradiation,however,no microstructure changes were observed in SiC matrix.Moreover,it can be deduced that no irradiation induced changes in mechanical properties were observed after present proton irradiation.