Significant efforts have been devoted to rare earth (RE) based upconversion (UC) photoluminescent (PL) materials, which have been found to have a wide range of applications in recent years.[1] Compare
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,