I-Alpha-alumina ineempawu zeekhemikhali ezizinzileyo, ukumelana nokugqwala, ubulukhuni obuphezulu, iimpawu ezilungileyo zokugquma, indawo yokunyibilika ephezulu kunye nokuqina okuphezulu, kwaye isetyenziswa kwiindawo ezahlukeneyo.
Ukusetyenziswa komgubo we-α-alumina kwi-ceramics
Ii-microcrystalline alumina ceramics luhlobo olutsha lwezinto ze-ceramic ezinesakhiwo esifanayo nesixineneyo kunye nobukhulu be-nano okanye i-sub-micron grain. Zineengenelo zamandla aphezulu oomatshini, ukumelana nokuguguleka, ukumelana nokugqwala, ukumelana nokuxinana, i-adjustable expansion coefficient kunye nokuzinza okuhle kobushushu. Uphawu lwayo oluphambili kukuba i-crystal ephambili incinci. Ke ngoko, imeko yobugcisa ebaluleke kakhulu yokulungiselela ii-microcrystalline alumina ceramics kukulungiselela umgubo we-α-Al2O3 onekristale encinci yokuqala kunye nomsebenzi ophezulu wokusila. Le powder ye-α-Al2O3 inokuba ngumzimba we-ceramic oxineneyo kubushushu obuphantsi bokusila.
Ukusetyenziswa komgubo we-α-alumina kwizinto ezinganyangekiyo
Umgubo we-α-Al2O3 wahlukile kwizinto ezichasayo ngokwesicelo, kwaye neemfuno zomgubo nazo zahlukile. Umzekelo, ukuba ufuna ukukhawulezisa uxinano lwezinto ezichasayo, i-nano-alumina yeyona ndlela ilungileyo; ukuba ufuna ukulungiselela izinto ezichasayo ezimile okweemilo, udinga umgubo we-α-Al2O3 oneenkozo ezirhabaxa, ukushwabana okuncinci, kunye nokumelana okunamandla kokuguquguquka. Iikristalithi ezimile okweeflake okanye zeplate zingcono; kodwa ukuba zizinto ezichasayo ezingeyomofu, i-α-Al2O3 iyadingeka ukuze ibe nokuchacha okuhle, umsebenzi ophezulu wokusila, kwaye ukusasazwa kobukhulu beesuntswana kufuna ubuninzi obukhulu, kwaye iikristalithi ezicolekileyo zingcono.
Ukusetyenziswa komgubo we-α-alumina kwizinto zokupolisha
Iindlela ezahlukeneyo zokupolisha zifuna izixhobo ezahlukeneyo. Iimveliso zokupolisha rough kunye nokupolisha okuphakathi zifuna amandla okusika aqinileyo kunye nobunzima obuphezulu, ngoko ke ulwakhiwo lwazo oluncinci kunye neekristale kufuneka zibe rhabaxa; i-α-alumina powder yokupolisha kakuhle ifuna ukuba imveliso epolished ibe noburhabaxa obuphantsi kunye nokukhazimla okuphezulu. Ngoko ke, okukhona ikristale ephambili ye-α-Al2O3 incinci, kokukhona ingcono.
Ukusetyenziswa komgubo we-α-alumina kwizinto zokuzalisa
Kwizinto ezizaliswayo, ukuqinisekisa ukuba zidibana kakuhle nezinto eziphilayo kwaye zinciphise impembelelo kwi-viscosity yenkqubo, eyona mfuneko isisiseko ye-α-Al2O3 kukuba i-fluidity ilungile ngokwaneleyo, kungcono ibe yi-sphericity, kuba okukhona i-sphericity iphezulu, umphezulu uphezulu. Okukhona amandla emancinci, kokukhona i-fluidity yomphezulu webhola ingcono; okwesibini, i-α-Al2O3 powder enophuhliso olupheleleyo lwekristale, ubumsulwa obuphezulu beekhemikhali kunye nomxhuzulane ophezulu wenyani ethile ine-thermal conductivity engcono kunye nesiphumo esingcono xa isetyenziselwa izinto zokukhusela kunye nezokuhambisa ubushushu.
Ukusetyenziswa komgubo we-α-alumina kwizinto ze-capacitor corundum
Kwimizi-mveliso, umgubo we-α-alumina ococekileyo uhlala utshizwa kwisithando sombane esishushu kakhulu ukwenza i-corundum yokwenziwa, eyaziwa ngokuba yi-fused corundum. Le nto ineempawu zobunzima obuphezulu, imiphetho ecacileyo kunye neekona, kwaye isakhiwo esincinci singcono ukuba sisondele kwi-spherical. Kwinkqubo yokusila ngesantya esiphezulu, iinkozo ezirhabaxa zinamandla amakhulu okusika, kwaye iinkozo ezirhabaxa azilula ukuziqhekeza. ngaloo ndlela zandisa ubomi bazo benkonzo.