| 摘要 |
Metal containing compounds having a graphite-like layer structure are derived from poly(amino-s-triazine), [A], which has a layer structure and is represented by (C3N3)2NxHy, where 2 </= x </= 4 and 0 </= y </= 8. Reaction of [A] with a transition metal M at 400-1000 DEG C gives a compound represented by CaNHbMc, where 0.6 </= a </= 20.0, 0 </= b </= 1.0, and 0.001 </= c </= 0.5. This compound exhibits magnetism. Reaction of [A] with a halide of a transition metal or aluminum at 200-500 DEG C gives C6NpHqMrXs, where M is a transition metal or Al, X is a halogen, 8 </= p </= 10, 0 </= q </= 10, 06 </= r </= 1.5, and 0 </= s </= 1. When M is a transition metal the compound exhibits paramagnetism. When X is Al, heating of a powder of the compound at 800-950 DEG C provides an AlN powder coated with an amorphous organic substance composed of C, N and H and, hence, protected against oxidation. The same coated AlN powder is obtained also by reacting a powder of [A] with an aluminum halide at 800-950 DEG C. By heating the coated AlN powder at a temperature above 1000 DEG C the amorphous organic coating sublimates and decomposes to leave a pure AlN powder which is suitable for sintering. The transition metal M is preferably Ni, Fe, Co or Mn. A metal carbonitride of general formula MCN2 where M is Mg or Zn, is prepared by reacting the poly(amino-s-triazine), [A], with the metal or metal halide in an inactive gas atmosphere at 6000 to 1000 DEG C. |
