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profiles. For instance, some differences were noted in the frequencies of the OH--bending vibrations. From this study, it may therefore be concluded that besides particle morphology, composition... nature. The peaks observed at 2346, 1628, and 1518 cm-1 corresponded to the bending vibrations of the OH- group and peak at 896 cm-1, characteristic of group, lessened due to calcination at high......
体变形的几率,从而有效地降低了模量.此种方法制备的Ti-Nb金属-金属层状复合材料有望代替现有的TiAl6V4,TiNbTaZr以及纯Ti等植入材料,是一种强度更高,模量与骨骼更加匹配的生物医用Ti基复合材料. 图7 Ti-Ta二元金属-金属复合材料经热旋锻加工后的真应力-真应变曲线[41] Fig. 7 True stress-strain and strain...]. Materials & Design, 2017, 113: 128-136. [18] TAN H F, ZHANG B, LUO X M, SUN X D, ZHANG G P. Strain rate dependent tensile plasticity of ultrafine-grained Cu/Ni laminated composites[J]. Materials......
strength of sandstone increased with the increase of strain rate. The water-saturated rock specimens showed stronger rate dependence than the dry ones, but the loading rate sensitivity of thermally... by developing the Brazilian disc test, axial compressive test and three-point bending test. The experimental results obtained a critical temperature of 200 to 250 °C; on either side of the critical......
in the FT-IR curves of biochars obtained from SS2, SS3 and SS4 feedstocks and weaken for the SS1-derived biochar, indicating the decomposition of organic fatty hydrocarbons.The bending vibration peak of C-N......
by the simultaneous action of cyclic stress, tensile stress and plastic strain [17]. Fatigue cracks will not be initiated and propagate if any one of these factors is absence. The fatigue failure process normally could.../softened as a result of dislocation movement [18]. Large amount of plastic strain will be accumulated at surface as a result of dislocation saturation. Strain localization at surface will finally induce......
explosives, the expanding hot gas generates a shock wave that, in conjunction with cracks propagating from the blast zone, fractures the rock [61]. This method involves pre-drilling of holes and use... a laser to heat rectangular rock specimens, notched or unnotched, at different power levels and durations and then did three-point bending tests to get the modulus of rupture. WILLIAMSON et al [94]’s......
