The lifetime of light-emitting diodes (LED) becomes a more important concern because of the increasing application of LED in the field of traffic light, solid-state light and color displays[1]. A life time test of a l...The lifetime of light-emitting diodes (LED) becomes a more important concern because of the increasing application of LED in the field of traffic light, solid-state light and color displays[1]. A life time test of a light source usually requires several thousand hours to ensure the successful application of LED in higher reliability and performance.展开更多
Silicon carbide (SiC) ber possesses high thermal stability, low density, high speci c strength, good oxidation-ablation resistance, high speci c modulus, especially improved aw tolerance and non-catastrophic mode of f...Silicon carbide (SiC) ber possesses high thermal stability, low density, high speci c strength, good oxidation-ablation resistance, high speci c modulus, especially improved aw tolerance and non-catastrophic mode of failure.Therefore, silicon carbide ber is widely used in aerospace, aviation, nuclear industry, and other elds. The radiation damage which silicon carbide ber will be subject to is inevitable though it is immune to various environments.展开更多
Third generation SiC fibers have significantly improved the thermo-mechanical properties of SiC ceramic matrix composites which are considered as advanced materials for nuclear system application. In the present work,...Third generation SiC fibers have significantly improved the thermo-mechanical properties of SiC ceramic matrix composites which are considered as advanced materials for nuclear system application. In the present work, the Raman spectra presented in Fig. 1 give information related to the structural parameters of Sn-ion irradiated and unirradiated fibers.展开更多
The fracture behavior is a very important aspect of the mechanical properties of structure materials. For highenergy ions, their range in steels can be significantly larger than the average size of grains of steels, t...The fracture behavior is a very important aspect of the mechanical properties of structure materials. For highenergy ions, their range in steels can be significantly larger than the average size of grains of steels, thus their irradiation can change the bulk properties of steels. It is therefore possible to study the fracture behavior of steel specimens irradiated with high-energy ions.展开更多
Single crystal samples of sapphire were irradiated with 73 MeV Ca ions at room temperature to fluences of 1.01013, 5.01013 and 1.01014 ions/cm2. Optical properties of these samples were characterized by ultraviolet...Single crystal samples of sapphire were irradiated with 73 MeV Ca ions at room temperature to fluences of 1.01013, 5.01013 and 1.01014 ions/cm2. Optical properties of these samples were characterized by ultravioletvisible spectrometry (UV-VIS) and fluorescence spectrometer (PL).展开更多
文摘The lifetime of light-emitting diodes (LED) becomes a more important concern because of the increasing application of LED in the field of traffic light, solid-state light and color displays[1]. A life time test of a light source usually requires several thousand hours to ensure the successful application of LED in higher reliability and performance.
文摘Silicon carbide (SiC) ber possesses high thermal stability, low density, high speci c strength, good oxidation-ablation resistance, high speci c modulus, especially improved aw tolerance and non-catastrophic mode of failure.Therefore, silicon carbide ber is widely used in aerospace, aviation, nuclear industry, and other elds. The radiation damage which silicon carbide ber will be subject to is inevitable though it is immune to various environments.
文摘Third generation SiC fibers have significantly improved the thermo-mechanical properties of SiC ceramic matrix composites which are considered as advanced materials for nuclear system application. In the present work, the Raman spectra presented in Fig. 1 give information related to the structural parameters of Sn-ion irradiated and unirradiated fibers.
文摘The fracture behavior is a very important aspect of the mechanical properties of structure materials. For highenergy ions, their range in steels can be significantly larger than the average size of grains of steels, thus their irradiation can change the bulk properties of steels. It is therefore possible to study the fracture behavior of steel specimens irradiated with high-energy ions.
文摘Single crystal samples of sapphire were irradiated with 73 MeV Ca ions at room temperature to fluences of 1.01013, 5.01013 and 1.01014 ions/cm2. Optical properties of these samples were characterized by ultravioletvisible spectrometry (UV-VIS) and fluorescence spectrometer (PL).
