Al2O3 nanopowders spherical alpha Alumina no ka silicone conductive thermal

Ma muli o ka viscosity maikaʻi, ka maʻalahi, ka hana hoʻopiʻi maikaʻi a me ka conductivity thermal maikaʻi loa, hoʻohana pinepine ʻia ka silica gel thermally conductive e like me ka hoʻopiha wela wela no nā substrates IC o nā mea uila e like me nā lako kamaʻilio a me nā kamepiula. ʻO nā mea hoʻopiha pauka he alumini nitride, alumini oxide, zinc oxide, beryllium oxide, silicon oxide, silicon carbide, boron nitride, etc.Ma waena o lākou, ʻaʻole maikaʻi nā ʻano insulation maikaʻi wale nō ka alumina, akā ʻaʻole haʻahaʻa kona conductivity thermal (ʻo 30W / m · K) ka wela maʻamau (ʻo 30W / m · K), a ua hoʻohana nui ʻia i nā huahana insulation ma ke kula kiʻekiʻe. uila a me nā mea hoʻololi UHV.

ʻO nā ʻāpana alumina me ka conductivity thermal kiʻekiʻe e pono iā lākou iho ke kiʻekiʻe o ka crystallinity a me ka compactness. He ʻano hexagonal ka alpha-phase alumina, ʻo ia ke ʻano ʻoi loa ma waena o nā ʻano alumina like ʻole. Ua hōʻike ʻia nā haʻawina ʻoi aku ka kiʻekiʻe o ka alpha alpha o ka pauka alumina, ʻo nā kristal he mau kristal hoʻokahi a me nā ʻāpana spherical, a aia kekahi mau mokulele aniani. Ke hoʻopiha ʻia i loko o ka silica gel, e ʻike ʻia kahi pilina laina a me ka ʻili i ka wā e pili ai nā ʻāpana me nā ʻāpana. Hoʻopili, no laila hiki ke hoʻomaikaʻi maikaʻi ʻia ka conductivity thermal o ka silica gel.