Ceramics

Alumina (aluminum oxide) has widespread use in the ceramics industry for refractory materials, abrasives, and porcelain. Many different sizes and chemically modified grades are available.

The particle size distribution of boron carbide powder affects the manufacturing and mechanical properties of components, including packing density and mechanical strength of the final parts.

Can free carbon in SiC be rapidly and conveniently quantified?

Products used in ceramic and abrasive applications are invariably produced from powders. Particle size distribution has profound effects on processing and function of these products. These materials include most oxides and minerals from aluminum oxide to zirconium oxide. Depending on the application, particle size can effect densification, transport and mechanical properties.

Particle size is of critical importance to the powder properties and to the performance of solid oxide fuel cells. Laser diffraction has proven to be an excellent way to monitor and control particle size for these materials.

Particle size analysis plays a crucial role in the manufacture of electronic materials for dielectric applications. In all cases, the particle size distribution has a great impact on their processing and performance.

This application note shows how the laser diffraction technique can be effectively used as an inspection tool for the synthesis of piezoelectric ceramics.

The Fluorolog-QM fluorescence spectrometer with an integrating sphere option is an excellent choice for PLQY measurements in NIR. The K-Sphere is very convenient and easy to use, as it couples directly to the sample compartment optics and allows a use of external light sources, such as DPSS lasers, which can be attached to the front of the sample compartment. The sphere has holders for cuvettes, slides and powders that can be easily interchanged. The results demonstrate very good reproducibility and precision for NIR PLQY measurements spanning almost two orders of magnitude. Based on multiple measurements, the demonstrated PLQY standard deviations range from 1.3% for high QY value (77%) to 6.4% for the QY below 1%.

Depth profile analysis by GDOES. Pulsed RF Glow Discharge Optical Emission Spectrometry offers ultra-fast elemental depth profiling capability for the investigation of thin and thick films. Thanks to the use of a pulsed RF source, coupled with a high resolution optical spectrometer, the GD Profiler 2 provides an excellent depth resolution, allowing the fast evaluation of the coating quality. In this application note, we focus on a MoS2/Pb composite multilayered sample, used as a solid lubricant. The analysis of such a sample shows the excellent performance of this instrument for the study of nm-thick complex coatings.

The new Fluorolog-QM spectrofluorometers, due to their modularity and advanced software and a universal interface, are an ideal choice for studying multiple aspects of upconversion. This technical note illustrates the use of Fluorolog-QM-75-21 for spectral and time-resolved characterization of these materials.