共搜索到11161条信息,每页显示10条信息,共1117页。用时:0小时0分1秒237毫秒
Uplift was thin and had experienced relatively low extrusion stress. Controlled by early faults, there was strike-slip basal faulting that penetrated through the gypsolyte-saline rock. And the integrity...-saline rock has such low matrix permeability, and can prevent hydrocarbon from migrating through their matrix. To become conduits for secondary hydrocarbon migration, the permeability must be enhanced......
) and high average peak power (4.2 kW) and (II) low pulse energy (17.6 J) and low average peak power (2.8 kW). The weld joint formed at lower heat energy input exhibited finer dendritic grain structure. Mg... tungsten arc welding, etc. Due to the focusability of the laser beam, laser welding produces high concentrated energy density heat source resulting in minimal distortion, strong weld joint [5] and low......
for their low densities, good damping capacity, distinct strength, and excellent machinability [1-5]. However, the poor mechanical properties, such as low yield and tensile strength have restricted... and solution-treated specimens were observed by using an optical microscope (OM). Phase analysis were conducted using a Rigaku D/MAX2500PC X-ray diffractometer with a copper target at scanning angles......
lead paste at low temperature referred to aluminum metallurgy 表2 废铅膏的主要化学成分 Table 2 Main composition of waste lead paste (mass fraction, %) 表3 废铅膏中铅物相组成占比 Table 3 Proportion... Chao, TANG Chao-bo, YANG Jian-guang, CHEN Yong-ming, YANG Sheng-hai, HE Jing. Sulfur-fixing reduction smelting of spent lead-acid battery colloid sludge in fused salt at low temperature[J]. Mining......
the antibacterial behavior of Mg-based implants [15]. For this, the antibacterial behavior of metals such as silver (Ag), titanium (Ti), zinc (Zn), gold (Au), and copper (Cu) has been employed in previous... and antimicrobial activity [19]. Silver additives deliver antimicrobial activity to materials at relatively low concentrations, and are widely used in the textile industry and in plastic medical devices where......
. The oxide film was smooth with uniform thickness, low porosity, high hardness, and had the highest corrosion resistance at these parameters. However, discontinuous oxide films were observed from samples.... The anodization of 7075 Al alloy was investigated, and intermetallic particles commonly formed in the microstructure negatively impacted the quality of oxide film [20]. Low contents (below 0.1 wt.%) of Si......
with increasing TiC content. The coefficient of friction (CoF) showed a minimum of 0.2 for 10% TiC grade, which also showed the lowest wear rate. For the low TiC content sample, adhesive wear with severe... interesting chemical, physical and mechanical properties such as high corrosion resistance, low density (4.5 g/cm3) and relatively low elastic modulus (110 GPa) which make them suitable for chemical......
angle; lap shear strength; microstructure 1 Introduction Copper-containing aluminium alloys such as 2xxx and 7xxx series are most preferred while manufacturing aircraft fuselage and wing skins [1... size of 30 μm. The tool used in this work is M2 grade high speed steel and its chemical composition is listed in Table 3. All the TA joints were made using a non-consumable tool which had a left hand......
organic PCM-fatty alcohols have the advantages of low price and high latent heat, but single component of the fatty alcohol has multiple phase change peaks in the phase change process [14, 15]. The binary low eutectic mixture of fatty acid and fatty alcohol has a phase change point that is lower than both the two components [16]. YUAN et al [13] have introduced 15 fatty acid binary eutectic......
and for the solution he used spectral Chebyshev collocation method and concluded that copper nanofluids is best for heat transfer. Influence of solutal concentration on swirling disk flow of magnetite ferrous oxide......