Kwimizi-mveliso emininzi, eminye imibhobho ithe cwaka inyamezela ezona meko zinzima zokusebenza: ubushushu obuphezulu, umhlwa owomeleleyo, nokunxiba okuphezulu. 'Ziyimithambo yegazi yamashishini' eqinisekisa imveliso eqhubekayo kwaye ezinzileyo. Namhlanje siza kuthetha ngeyona ibalaseleyo kolu hlobo lombhobho -umbhobho we-silicon carbide ceramic.
Abantu abaninzi bacinga nge "brittle" xa besiva "i-ceramic". Kodwa ii-ceramics ze-silicon carbide zemizi-mveliso zilandela "ubunzima" kunye "nozinzo". Ukuqina kwayo kuphezulu kakhulu, kwaye ukuxhathisa kwayo kungaphezulu kakhulu koko kwesinyithi kunye nerabha. Iyakwazi ukumelana nokhukuliseko lwesantya esiphezulu solwelo oluqulethe amasuntswana aqinileyo ixesha elide; Iimpawu zemichiza zizinzile kwaye ziyakwazi ukumelana nokukhukuliseka kwee-asidi ezomeleleyo ezahlukeneyo, iziseko eziqinileyo, kunye neetyuwa; Kwangaxeshanye, inokusebenza ngokuzinzileyo kumaqondo obushushu aphezulu kwaye imelane namaqondo obushushu ukuya kuthi ga kwi-1350 ℃. Ukongezelela, ine-conductivity efanelekileyo ye-thermal kunye nomgangatho ogudileyo, onceda ukunciphisa ukuxhathisa ukuthutha kunye nokusetyenziswa kwamandla.
Ukubeka ngokulula, iityhubhu ze-silicon carbide ceramic ziyilelwe ukusombulula iingxaki zothutho "ezishushu, ezirhabaxa, kunye nezonakalisayo". Ekuthuthweni kwe-slag kunye nodaka kumashishini afana nemigodi, i-metallurgy, kunye namandla ashushu, inokwandisa kakhulu ubomi benkonzo yemibhobho kunye nokunciphisa ixesha lokunciphisa ukutshintshwa; Ekuthuthweni kweendaba ezitshabalalisayo kumashishini okukhusela amachiza kunye nokusingqongileyo, kunokuqinisekisa ukusebenza okuzinzile kwexesha elide kunye nokunciphisa umngcipheko wokuvuza. Nangona utyalo-mali lokuqala lunokuba luphezulu, iinzuzo zexesha elide zibalulekile kwimbono ebanzi yokunciphisa ukugcinwa, ukunciphisa ukusetyenziswa kwamandla, kunye nokuqinisekisa imveliso.
Ukwenziwa kweetyhubhu ze-silicon carbide ceramic ngumsebenzi obuthathaka. Ngokuqhelekileyo, i-silicon carbide powder ixutywe kunye nenani elincinci lezongezo ukwenza "umzimba ohlaza" ngamandla athile, kwaye emva koko i-sintered kwiqondo lokushisa eliphezulu ukwenza izinto ezixineneyo kwaye zibe nzima. Ngokweemfuno ezahlukeneyo, iinkqubo ezahlukeneyo ezifana ne-reaction sintering kunye noxinzelelo lwe-sintering ziyakwamkelwa. Ukuze kube lula ukufakela, iipayipi ezigqityiweyo zihlala zixhotyiswe ngamacandelo adibanisayo njengama-flanges ensimbi.
Ngaphandle kokusebenza kwayo okuphezulu, iityhubhu ze-silicon carbide ceramic zisezizixhobo ze-ceramic ezifuna "unyango oluthambileyo" xa lusetyenziswa. Ukufakela kunye nokuthuthwa kufuneka kuphathwe ngenyameko ukuphepha impembelelo enzima; Qinisekisa inkxaso eyaneleyo kunye nembuyekezo yokwandiswa kwe-thermal ukuphepha imithwalo eyongezelelweyo ebangelwa uxinzelelo lwangaphandle okanye utshintsho lweqondo lokushisa; Phambi kokukhetha imathiriyeli, kungcono ukuba nenjineli yobuchwephesha ivavanye indawo ethile, ubushushu, kunye noxinzelelo lokufumana esona sisombululo sifanelekileyo.
Ngokubanzi, iityhubhu ze-silicon carbide ceramic ziye zafikelela ekugqibeleni "ebulukhunini" kunye "nozinzo", ukubonelela ngezisombululo ezithembekileyo kwiimeko eziyimfuneko zokuhambisa, kwaye ngokwenene "amaqhawe angabonakaliyo".
Ixesha lokuposa: Oct-05-2025