Determination Of The Impurity Composition Of B-N-Al-Ti Compound Materials Produced Under High Pressures And Temperatures

Composite materials based on cubic boron nitride in titanium- and aluminum-containing systems hold promise as coatings for cutting heads of tools. In addition, due to a combination of unique characteristics, compound materials based on dense modifications of boron nitride are widely used as various functional environments of modern micro- and nanoelectronics. Samples of composite materials were synthesized at the Scientific-Practical Materials Research Centre of the NAS of Belarus (SSPA) from the AlN, Al, BN, and TiN components at a pressure of 5 GPa and at different temperatures from 500 C to 2000 degrees C in tungsten and cobalt carbide high-pressure chambers of the "anvil with a hole" type in containers made of lithographic stone. The duration of the synthesis for all samples was 3 min. Sixty-nine samples were subjected to the neutron activation analysis. Since the amount of the material for the NAA was limited, irradiation was carried out in a few stages. Concentrations of 40 elements were determined (Na, Mg, Al, Si, Cl, S, K, Ca, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, As, Br, Rb, Sr, Zr, Mo, Sn, Sb, I, Cs, Ba, La, Ce, Eu, Tb, Yb, Hf, Ta, W, Au, Th, U). The analysis allowed determination of impurities in the raw materials and synthesized samples.