Nanosized niobium (V) and tantalum (V) oxide ceramics as competitive oxidizers within aluminium-based nanothermites

Bimetallic Alkoxides of Nickel(II) with Niobium(V) and Tantalum(V)

A new class of bimetallic isopropoxides of nickel(II) with niobium and tantalum with the general formula, Ni[M(OPr')6]2, (where M = Nb or Ta) have been synthesized by the reaction of nickel chloride isopropanolate, NiCl2-A:Pr'OH, with potassium hexaisopropoxy metalates, KM(OPr')6, (M = Nb or Ta) in the molar ratio 1:2. These derivatives have been characterized by elemental analyses, molecular w...

Synthesis & Support of Tantalum (v) Oxide for Insulation & Photocatalytic Applications

The Application of V&V Within Reuse-Based Software Engineering

Verification and Validation (V&V) is performed during application development for many systems, especially safety-critical ,'rod mission-critical systems. The V&V proce_ is intended to discover errors ,as early as possible during the development process. Early discovery is important in order to minimize the cost mad other impacts of correcting these errors. In reuse-b,_sed softw_e engineering, ...

Preventing and reversing vacuum-induced optical losses in high-finesse tantalum (V) oxide mirror coatings.

High-finesse optical cavities placed under vacuum are foundational platforms in quantum information science with photons and atoms. We study the vacuum-induced degradation of high-finesse optical cavities with mirror coatings composed of SiO₂-Ta₂O₅ dielectric stacks, and present methods to protect these coatings and to recover their initial low loss levels. For separate coatings with reflectivi...

Tantalum Oxide Coatings as Candidate Environmental Barriers

Tantalum (Ta) oxide, due to its high-temperature capabilities and thermal expansion coefficient similar to silicon nitride, is a promising candidate for environmental barriers for silicon (Si) nitride-based ceramics. This paper focuses on the development of plasma-sprayed Ta oxide as an environmental barrier coating for silicon nitride. Using a D-optimal design of experiments, plasma-spray proc...