The aerodynamic levitation which is one of the containerless processing methods has been introduced to prepare Nd3+/yb3+ co-doped La2O3-TiO2-ZrO2 glasses which cant be obtained via conventional method
In the working process of semiconductor lasers, catastrophic optical damage (COD) occurs frequently in the laser facets, which has become the main reason to limit the maximum power output.So, the deve
Lanthanide metal-organic frameworks (MOFs) are attracting increasing attention not only for their desirable structural features, but also their potential applications in catalysis, molecular recogniti
The rational design and synthesis of metal-organic frameworks (MOFs) have attracted considerable attention in recent years, owing to their fascinating nature of molecular connectivities and topologies
High power piezoelectric ceramics have wide application in ultrasonic motors, piezoelectric actuators and piezoelectric transformers.In such multi-component solid solution systems, the dopant used for
Metal-organic frameworks (MOFs) are an emerging class of periodic crystalline solid-state materials constructed from metal ions or polynuclear metal-oxygen clusters and multidentate organic ligands.Co
In this paper, we demonstrate a fast and facile ultrasound-assisted synthesis of high-quality 3 nm Pt nanoparticles, and the further fabrication of three kinds of structured Pt-CeO2 hybrids.The influe
A new vanadium borate, Sr3V2B10O23 has been synthesized by standard solid-state reaction method and its structure determined by single-crystal X-ray methods.It crystallizes in the triclinic space grou
SAE4137H是石油机械工业的钻其用钢,由于使用条件比较苛刻,所以该钢种对钢的内在质量要求非常严格,尤其是力学性能指标要求非常高,冲击功常温要求大于100J,我们现在生产的产品40CrMnMo的冲击功在70J左右,要达到这一指标很难,试制的关键点是通过制定内控化学成分保证力学性能及淬透性要求,冶炼过程中提高钢水的纯净度,在电炉冶炼阶段,采用铝脱氧,不用Si粉脱氧进而控制C类(硅酸式盐类)夹杂物,
纳米材料能够赋予产品以奇特而优异的性能。但因目前科技发展水平和生产成本的制约，完全以纳米材料替代常用的传统材料还不现实。本文介绍了最近十几年来本课题组在金属耐磨材料、纳米改性与应用方面的进展，说明材料纳米改性科学技术的支撑作用和利用材料纳米改性科学技术进行产品创新的重要性，采用纳米改性技术可在纳米尺度上控制材料的局部、表面或整体性能，扩展材料的应用领域，显著提高装备制造业产品或零部件的服役寿命。