?????????????????????? ???????????????????????????? ?????????????????? AlN???SiC???Y???Al???O?????? ?? ?????????????? ?????????????? ???????????????????? ??????-?????????????????? (27???65 ????/????), ???????????????????? ?????????????? ???????????????????? ???????????????? ???? ???????????? 46 % (???? ??????????) AlN (2??), 4 % (???? ??????????) Y???O??? ?? 50 % (???? ??????????) SiC(6??) ?? ???????????????????????????? SiC ?????????????????? ?????????????????????????? (1, 5 ?? 50 ??????). ????????????????, ?????? ???????????????? ?????????????????????????? ?????????????????????????? ?????????????????????????? ???????????????????? ?????????????????????? ?????????????? ???? ???? ??????????????????: ?????????????? ?????????????????? SiC ?? ???????????????????? ?????????? ????????, ?????????????????? ?????????????????? ????????????. ??????????????????????, ?????? ???????????????????? ?????????????? ?????????????????? SiC ?? ?????????????????? ?????????????????? ???? 3 ???? 7 ?????? ???????????????? ?? ???????????????? ?????????????????? ???????????????????????????? ?????????????????????????? ???? 10??? ???? 90 ????????, ?? ?????? ???? ???????????????????? ???? 3 ???? 0,5 ?????? ?????????????????????? ?????????????????????? ?????????????? ???? ?????????? SiC, ?????? ?????????? ???????????????? ?? ?????????????? ?????????????????????????? ?? 210 ????????. ?????????? ??????????????, ??????????????????, ?????????????? ???????????????? 50 % (???? ??????????) SiC ?? ???????????????? ?????????????????? SiC 3 ??????, ???????????????? ???????????????? ???????????????????????? ?????? ???????????????????????? ???????????????????????? ??????-??????????????????. ???????? ?????????????????????????????? ??????????????, ?????????????????????????? ???? ???????????????? ?????????? SiC, ???????????????????????? ???????????????????????? ?????????????? ?????????????????? AlN(2H)???SiC(6H) ??, ?????????? ??????????????, ?????????????????? ?????????????????? ?????????????? ?????????????? ?????????????????????????????? ?????????????????????????? ?????????????????????????????? ?????????????????? ???? ???????????? ?????????????? ???????????????? ?? ???????????????????? ?????????????? ?????????????? ???????????????????? ??????-??????????????????.

???????????????????? ???????????????????????? ?????????????????? AlN???SiC???Y???Al???O?????? ?? ?????????????? ???????????? ???????????????????? ??????-???????????????????????????? (27???65 ????/????), ???????????????? ?????????????? ???????????????? ???????????????? ?????????????? 46 % (???? ??????????) AlN(2??), 4 % (???? ??????????) Y???O??? ?? 50 % (???? ??????????) SiC(6??) ?? ?????????????????????????? SiC ???????????? ?????????????????????????? (1, 5 ?? 50 ??????). ????????????????, ???? ?????????????? ?????????????????????? ???????? ?????????????????????? ???????????????????? ?????????????? ???????????????? ?????? ???? ??????????????????: ?????????????? ???????????????? SiC, ???????????????? ?????? ???????? ???? ?????????? ?????????????????? ??????????????. ??????????????????????, ???? ???????????????????? ?????????????? ???????????????? SiC ?? ?????????????????? ?????????????????? ?????? 3 ???? 7 ?????? ???????????????????? ???? ???????????????? ???????????????? ???????????????????????? ?????????? ?????? 10??? ???? 90 ????????, ?? ?????? ???? ?????????????????? ?????? 3 ???? 0,5 ?????? ???????????????????? ???????????????????????? ???????????? ???? SiC, ???? ?????????? ?????????????????? ?????????????? ?????????? ???? 210 ????????. ?????????? ??????????, ???????????????????????? ??????????????????, ???? ?????????????? 50 % (???? ??????????) SiC ???? ???????????????? ???????????????? SiC 3 ??????, ?? ???????????????? ?????????????????????? ?????? ???????????????????????? ???????????????????? ??????-????????????????????????????. ???????????????? ???????????????????????????? ??????????????, ???? ?????????????????????? ???? ???????????????? ?????????? SiC, ?????????????????????????? ???????????????????? ?????????????? ???????????????? AlN(2H)???SiC(6H) ??, ?????????? ??????????, ???????????????????? ???????????????? ?????????????? ???????????? ?????????????????????????? ?????????????????????????? ???????????????????????????? ?????????????????? ???? ???????????? ?????????????? ???????????????? ?? ?????????????????????? ?????????????? ???????????? ???????????????????? ??????-????????????????????????????.

The composite materials AlN???SiC???Y???Al???O?????? with high absorption of microwave radiation (27???65 dB/cm) were obtained by free sintering of mixtures of 46 wt % AlN (2H), 4 wt % Y???O???, and 50 wt % SiC (6H) using different dispersions SiC (1, 5 and 50 microns). It is shown that the electrical resistivity of the developed materials essentially depends on their structures, sizes of SiC inclusions, the distances between them as well a on the state of the interphase boundaries. It has been established that the increase of the SiC inclusions size, from 3 ??m to 7 ??m leads to the reduction of resistivity from 10??? to 90 ohm???m. The reduction from 3 ??m to 0.5 ??m provokes the formation of uninterrupted frame from SiC and also causes the resistivity to decrease to 210 ohm???m. Thus, materials that contain 50 wt% SiC of sizes 3 ??m are most effective for the production of absorbers of microwave radiation. The layers of yttrium aluminum garnet, lying on the SiC grain boundaries, prevents the formation of AlN (2H)???SiC (6H) solid solutions and thus allows us to maintain a high dielectric characteristics of a composite material based on aluminum nitride and ensures a high absorption of microwave radiation.