Aluminium Nitride (AlN) yakatanga kugadzirwa muna 1877, asi kushandiswa kwayo mune microelectronics hakuna kukurudzira kuvandudzwa kwemhando yepamusoro, inotengeswa kusvika pakati pemakore ekuma1980.
AIN imhando yealuminium nitrate. Aluminium nitride inosiyana nealuminiyamu nitrate pakuti iyo nitrogen komboni ine chaiyo oxidation mamiriro e -3, nepo nitrate ichireva chero ester kana munyu wenitric acid. Ichi chinyorwa chekristaro chimiro chine hexagonal wurtzite.
Synthesis yeAIN
AlN inogadzirwa kuburikidza neiyo carbothermal kudzikiswa kwealumina kana yakananga nitridation yealuminium. Iine density ye3.33 g/cm3 uye, zvisinei nekusanyunguduka, inopatsanura pane tembiricha iri pamusoro pe2500 °C uye mumhepo. Pasina rubatsiro rwemvura-inogadzira additives, zvinhu zvacho zvakasungwa zvine hushamwari uye zvinopokana nekunyungudika. Kazhinji, maokisi akadai seY2O3 kana CaO anobvumidza kunyura pane tembiricha iri pakati pe1600 ne1900 degrees Celsius.
Zvikamu zvinogadzirwa nealuminium nitride zvinogona kugadzirwa nenzira dzakasiyana siyana, kusanganisira inotonhora isostatic yekutsikirira, ceramic jekiseni molding, low-pressure jekiseni molding, tepi casting, chaiyo machining, uye yakaoma kudzvanya.
Key Features
AlN haipindiri kune dzakawanda simbi dzakanyungudutswa, kusanganisira aluminium, lithium, uye mhangura. Iyo haipindire kune yakawanda yakanyungudutswa munyu, kusanganisira chlorides uye cryolite.
Aluminium nitride ine high thermal conductivity (170 W/mk, 200 W/mk, uye 230 W/mk) pamwe nepamusoro vhoriyamu resistivity uye dielectric simba.
Inotapukirwa ne hydrolysis muhupfu kana yaiswa mumvura kana munyoro. Uyezve, maasidhi uye alkalis anorwisa aluminium nitride.
Nyaya iyi insulator yemagetsi. Doping inosimudzira conductivity yemagetsi yechinhu. AIN inoratidza piezoelectric zvivakwa.
Applications
Microelectronics
Chinonyanya kushamisa hunhu hweAlN ndeyekupisa kwayo kwepamusoro conductivity, inova yechipiri kune beryllium pakati pezvigadzirwa zveceramic. Patembiricha iri pasi pe200 madhigirii celsius, kupisa kwayo kunopfuura kwemhangura. Uku kusanganiswa kwepamusoro conductivity, vhoriyamu resistivity, uye dielectric simba inogonesa kushandiswa kwayo se substrates uye kurongedza kune yakakwirira-simba kana yakakwirira-density microelectronic component component. Kudiwa kwekubvisa kupisa kunokonzerwa ne ohmic kurasikirwa uye kuchengetedza zvikamu mukati mekushanda kwavo kwekushisa kwehutano ndechimwe chezvinhu zvinogadzirisa zvinotarisa kuwanda kwekurongedza kwezvinhu zvemagetsi. AlN substrates inopa kutonhora kunoshanda kupfuura kwakajairwa uye mamwe ma ceramic substrates, ndosaka achishandiswa sema chip anotakura uye kupisa sinks.
Aluminium nitride inowana yakapararira yekutengesa application muRF mafirita emafoni ekutaurirana midziyo. Chigadziko chealuminium nitride chiri pakati pezvikamu zviviri zvesimbi. Zvishandiso zvakajairika muchikamu chekutengesa zvinosanganisira kuvharwa kwemagetsi uye zvigadziriso zvekupisa muma lasers, chiplets, collets, magetsi insulators, clamp mhete mune semiconductor kugadzirisa michina, uye microwave mudziyo kurongedza.
Zvimwe Zvishandiso
Nekuda kwekudhura kweAlN, mashandisirwo ayo akave akaganhurirwa kumauto aeronautics neminda yekufambisa. Nekudaro, zvinyorwa zvakadzidzwa zvakanyanya uye zvakashandiswa munzvimbo dzakasiyana siyana. Zvimiro zvaro zvinobatsira zvinoita kuti ive yakakodzera kune akati wandei akakosha maindasitiri ekushandisa.
AlN's maindasitiri maapplication anosanganisira refractory macomposites ekubata zvine hukasha simbi dzakanyungudutswa uye inoshanda yekutsinhana kupisa masisitimu.
Ichi chinyorwa chinoshandiswa kugadzira crucibles yekukura kwegallium arsenide crystals uye inoshandiswawo mukugadzirwa kwesimbi uye semiconductors.
Zvimwe zvinofungidzirwa kushandiswa kwealuminium nitride zvinosanganisira sekemikari sensor yemagasi ane muchetura. Kushandisa AIN nanotubes kugadzira quasi-one-dimensional nanotubes kuti ishandiswe mumidziyo iyi yanga iri nyaya yekutsvagisa. Mumakumi maviri emakore apfuura, madhidhiyo anobudisa chiedza anoshanda muultraviolet spectrum akaongororwawo. Iko kushandiswa kweiyo yakaonda-firimu AIN mune yepamusoro acoustic wave sensors yakaongororwa.
