High temperature refractory boride EDS quantitative low voltage

Ultra high temperature boride ceramic is a kind of refractory for extreme environments.Transition metals, such as hafnium (Hf), titanium (Ti), niobium (Nb) and the corresponding boride of zirconium (Zr), a series of materials is the highest melting point known.This makes them very suitable for application in the aerospace and defence.

However, the HfB₂EDS chemical analysis is challenging, it is because the boron (Z = 5) X ray fluorescence are easy to be fired hafnium (Z = 72).In addition, the main peak K line of boron (183 eV) and Hf (202 eV) N line peak overlap (figure 1).

In order to HfB₂Proper ration, the appropriate collection and quantitative model is very important.In this work, the HfB₂Under the condition of 5 kV times analysis and the quantitative success.