Towards continuous processes for the synthesis of precursors of amorphous Si/B/N/C ceramics

Borazine Based Molecular Single Source Precursors for Si/B/N/C Ceramics

“…Single source molecular precursors of the general type R 1 R 2 R 3 Si-X-BR 4 R 5 with X = NH [1, [8][9][10], N(CH 3 ) [11][12][13], CH 2 [14,15], C 2 H 4 [16] and R 1 -R 5 = CH 3 or Cl have proven to perform particularly well with respect to versatility and quality of the final ceramic. As measured by the combination of properties relevant for an application as structural ceramics at high temperature, the Si/B/N/C ceramics show superior performance [6].…”

On the Versatility of BH2X (X=F, Cl, Br, and I) Compounds as Halogen‐, Hydrogen‐, and Triel‐Bond Donors: An Ab Initio Study

“…Second, in ZATDUT a self‐assembled hydrogen‐bond dimer is established between two boron units, and thus an infinite 1D chain is formed. Finally, in NOBQAX the solid‐state architecture is governed by the triel‐bonding interactions established between two dihaloborane units, and this creates an infinite 1D column. Finally, it is notable that the distances observed are in agreement with the results derived from the calculations and highlight the versatility of haloborane to form solid‐state architectures of different kinds and shapes.…”

Polymer-derived ceramics route toward SiCN and SiBCN fibers: from chemistry of polycarbosilazanes to the design and characterization of ceramic fibers

“…165) Lee et al developed a method which is more or less identical with that of Jansen,166) without purification of the intermediate product. It consisted in the mixing of hexamethyldisilazane with boron trichloride and trichlorosilane and subsequent heating of the solution at 200°C.…”