(IAlumina CeramicIveliswe nguWintrustek)
Aluminaligama eliqhelekileyo le-aluminiyam oxide (Al2O3). Yi-ceramic yobugcisa ehlala ixesha elide kunye nendibaniselwano ebalaseleyo yeempawu zomatshini kunye nombane. Ifanelekile kwiintlobo ezahlukeneyo zezicelo zoshishino.
Izinto eziluncedo ezingundoqo:
Ukuqina okuphezulu kakhulu
Iimpawu ezigqwesileyo zokugquma
Ubushushu obuphezulu kunye nokumelana nokubola
Amandla omatshini alungileyo
Inkqubo yokwenziwa koMveliso: Ukusuka kwiPowder ukuya kwiCeramic Elukhuni
Ukwenziwa komgangatho ophezuluimveliso ye-alumina ceramicIbandakanya utshintsho oluntsonkothileyo lomzimba kunye neekhemikhali:
Ukulungiselela umgubo: I-alumina powder ixutywe kunye nezongezo (ezifana ne-sintering aids).
Inkqubo yokuqulunqa: Ukucofa okomileyo, ukucinezela i-isostatic, ukubumba isitofu, okanye ukufakwa kweteyiphu kukhethwe ngokuxhomekeke kwimilo efunekayo.
Sintering:Izinto eziphathekayo zivutha kwisithando somlilo esiphezulu kwi-1600 ° C ukuya kwi-1800 ° C, ebangela ukuba iinqununu zepowder zidibanise kwisakhiwo se-crystalline dense.
Ukugqibezela:Ngenxa yobunzima bayo obuphezulu kakhulu, ukugqiba emva kokucoca kudla ngokufuna ukusetyenziswa kwezixhobo zedayimani okanye amavili okusila.
Eli nqaku lijolise kwiinkqubo ezininzi zokubumba eziphambili:
1. Ukucinezela okomileyo
Le yeyona ndlela isetyenziswa ngokuqhelekileyo kwimveliso yemizi-mveliso, ilungele ukuveliswa kobuninzi beemilo ezilula (ezinjengamashiti, imisesane, kunye neewasha).
Umgaqo:I-powder equkethe i-binder ifakwe kwi-mold yensimbi kwaye iphantsi koxinzelelo lwe-unidirectional okanye i-bidirectional usebenzisa i-press.
Izinto eziluncedo: Ukusebenza okulula, ukusebenza kakuhle okuphezulu, ubungakanani bomzimba obuluhlaza obuchanekileyo, kunye nokuncipha kwe-sintering elawulekayo.
Imida:Kunzima ukwenza iindawo ezinokwakheka okuntsokothileyo; ngenxa yemikhosi ekhuphisanayo, ukuxinana kwamalungu amakhulu kunokungalingani.
2. I-Isostatic Pressing
Kwiindawo eziphezulu zokusebenza ezifuna ukuxinana okuphezulu kunye nokufana, ukucinezela kwe-isostatic yindlela ekhethwayo.
Umgaqo: I-powder ivalwe kwi-elastic mold (ngokuqhelekileyo isikhwama se-rubber) kwaye ifakwe kwisitya soxinzelelo oluphezulu, usebenzisa i-liquid njengendlela yokudlulisa uxinzelelo.
Izinto eziluncedo ezingundoqo: Uxinzelelo lusetyenziswa ngokufanayo kwipowder ukusuka kuzo zonke iindlela, okubangelwa ukuxinana okuhambelana kakhulu kuwo wonke umzimba oluhlaza kunye ne-deformation encinci emva kwe-sintering.
Usetyenziso:Ngokuqhelekileyo isetyenziselwa ukuveliswa kweetyhubhu ezinkulu ze-ceramic, i-spheres, okanye iibheringi ze-ceramic ezichanekileyo.
3. Tape Casting
Ukuba ubona i-ultra-thin ceramic substrates (ezifana neebhodi zeesekethe kwiifowuni eziphathwayo), zinokwenzeka ukuba ziveliswe nge-tape casting.
Umgaqo:Umgubo uxutywa ne-solvent, dispersant, kunye ne-binder ukwenza "i-slurry," ethi emva koko isasazwe kwibhanti lokuhambisa usebenzisa i-blade kagqirha ukwenza ifilimu encinci. Ifilimu ke yomiswa kwaye ihlulwe.
Izinto eziluncedo: Ukwazi ukwenza amaphepha e-ceramic acwecwe kakhulu kunye nobukhulu phakathi kwe-10 μm kunye ne-1 mm.
Usetyenziso:Iisubstrates zesekethe ezishinyeneyo, i-multilayer ceramic capacitors (MLCC).
4. Ukubunjwa kwesitofu
Le ndlela, ebolekwe kushishino lweplastiki, isetyenziselwa ukwenza iinxalenye ezinejiyometri entsonkothileyo kakhulu.
Umgaqo:I-aluminium powder ixutywe kunye nesixa esikhulu se-organic binder (ukuya kuthi ga kwi-40%), ishushu, kwaye ifakwe kwi-mold echanekileyo, emva koko ipholile kwaye iqiniswe.
Imingeni:Inkqubo "yokukhupha" (ukususa izinto eziphilayo) phambi kokuba sintering inde kakhulu kwaye ibaluleke kakhulu; ukuphathwa ngokungafanelekanga kunokukhokelela ngokulula ekuqhekekeni.
Usetyenziso:Amalungu achanekileyo eCeramic, amacandelo esixhobo sonyango.
5. UVeliso oloNgezelelweyo (Ushicilelo lwe-3D)
Le yitekhnoloji ye-cutting-edge kule minyaka yamva nje eyaphula ngokupheleleyo imida ebekwe ngumngundo kwimilo.
Iindlela eziphambili ziquka: Stereolithography (SLA) okanye uncamathisele extrusion.
Izinto eziluncedo: Akukho kubumba kufunwayo, oko kuyenza ilungele ukuphuhlisa iiprototypes okanye ukwenza iiseramikhi ezinezakhiwo zangaphakathi ezintsonkothileyo kakhulu (ezifana namathambo e-biomimetic kunye neetshiphusi zemicrofluidic).
