METHOD FOR PREPARING THREADLIKE ALUMINUM NITRIDE

摘要

FIELD: chemical technology. ^ SUBSTANCE: method for synthesis of threadlike aluminum nitride involves passing gaseous reagents as aluminum (III) halides and nitrogen through heated aluminum and the following condensation of the end product. Aluminum (III) halide is fed at the level rate 0.1-6 cm3/min per 1 cm2 of the condensation surface. Condensation is carried out on backing made of pure graphite. Invention provides synthesis of aluminum nitride as crystal fibers showing the ratio value of length to diameter above 200-300. Invention can be used for synthesis of threadlike aluminum nitride crystals useful in making sensor probes in cantilevers of atomic-power microscopes. ^ EFFECT: improved method of synthesis. ^ 3 dwg, 2 ex