Carbide ea silicon e nang le karabelo e sa fetoheng ke mofuta o mocha oa li-ceramic tsa theknoloji e phahameng, tse nang le matla a phahameng, ho thatafala ho phahameng, ho hanyetsa ho tsofala hantle le ho hanyetsa ho bola, 'me li sebelisoa haholo indastering ea tšepe, petrochemical, lisebelisoa tsa elektroniki, lifofane le masimo a mang. Sehlahisoa se nang le silicon carbide e thusang ka carbon black, graphite le li-additives tse fapaneng, se sebelisa mekhoa ea ho hatella ka omileng, ho ntša kapa ho tšela ho etsa boleng bo nang le masoba, joale se latelang hammoho ho utloisisa mokhoa oa tlhahiso oa silicon carbide e sebetsang ea ho sintering!
Carbide ea silicon e sintering e arabelang Tlhahiso ena ke morero oa tekheniki o seng o holile ka mor'a liteko tse likete ke moqapi ka lilemo tse ngata ho khothaletsa mokhoa oa ho etsa le ho hlahisa thepa e tala, haholo-holo mokhoa o ikhethang oa ho sintering o tsoelang pele.
Tsekong ea 1 ea tlhahiso ena, karoloana ea boima ba phofo ea silicon carbide ke likarolo tse 5 ~ 8, carbon black ke likarolo tse 0.5-1.5, graphite ke likarolo tse 1-1.5, 'me binder ke likarolo tse 0.1-0.5. Har'a tsona, gradient ea boholo ba thollo ea silicon carbide ke likarolo tse 2-3. methyl cellulose le phofo ea PVA ea khase li ile tsa kenngoa ka bongata bo loketseng ba metsi likarolo tse 0.1-0.5 ka ho latellana, 'me tharollo e bonaletsang e ile ea fumanoa ka mor'a ho futhumatsa.
1. Kopanya mefuta eohle ea phofo, likhomaretsi le litharollo tse lokisitsoeng ho latela foromo ebe u hlohlelletsa hantle.
2, hlwekisa vacuum ya hlobo ya casting, fihlella 0.1Mpa, ente ya kgatello ya slurry e tswakilweng. Kamora nako e itseng, slurry e a lokollwa mme sekgeo se a ntshuwa. Boloka ho 30-70 dihora tse 18-20 bakeng sa ho omisa.
3. Seha billet ho latela ditlhoko tsa setshwantsho.
4, kenya billet ea ho sintering ea karabelo ka ontong, eketsa boima ba likarolo tse 1-3 tsa silicon ea tšepe, u sintering ka vacuum. Ts'ebetso ena e arotsoe ka mocheso o tlase 0-700, e bolokiloe lihora tse 3-5; Mocheso o mahareng 700-1400, e boloke lihora tse 4-6; Boloka mochesong o phahameng 1400-2200 lihora tse 5-7. Theola mocheso o ka tlase ho 150 emisa ontong 'me u bule ontong.
5, sehlahisoa sa ho sila sa ho phatloha ha lehlabathe holim'a silicon slag, se nang le ho sila ha lehlabathe.
6, lihlahisoa tsa kalafo ea oxidation ka ontong ea oxidation, lihora tse 24 ho isa ho 1350, pholiso ea tlhaho. Nka, hlahloba 'me u li behe polokelong.
Lisebelisoa tse tala le tekanyo e amohetsoeng ke mokhoa oa tlhahiso ena ke tsa saense le tse utloahalang, e le hore sebaka se se nang letho se be le sebaka se lekaneng 'me sebaka se se nang letho se be le bongata bo betere; Sekhahla se betere sa ho futhumatsa, mocheso le nako ea ho tšoara li netefatsa matla a holimo a ho kobeha ha sehlahisoa. Tshebetso e ka sehloohong le boleng ba mokhoa ona li fihlile boemong bo tsoetseng pele ba machaba. Lipontšo tsa eona tse ka sehloohong ke tse latelang
Ho kenya tšebetsong silicon carbide e itseng ka karabelo e sintering
Mokhoa oa ho etsa liphutheloana tsa silicon carbide tse sintered reaction-sintered:
1, thepa e tala e lokela ho nka boima ba sekhomaretsi ba likarolo tse 0.3, eketsa metsi a itseng ka ho lekana hlohlelletsa, boima ba likarolo tse 6.8 tsa phofo ea silicon carbide (boholo ba likaroloana tsa 90-30m tsa likarolo tse 3.8, 30-0.8m tsa likarolo tse 3), carbon black karolo e le 'ngoe, e ntšo
2. Ha o tshela, qala ka ho hlwekisa hlobo e sebedisitsweng, o lokise hlobo, o e lokise ka difaene, o ntshe seretse ka hara tanka ka kgatello, tlatsa tanka ka naetrojene ya kgatello ya 0.1Mpa, o tshele ka kgatello, mme o sutumelletse seretse ka hara foromo. Kamora ho fihla hora e le nngwe, seretse se a lokollwa, mme kamora dihora tse 6, hlobo e a tloswa, thepa e se nang letho e a ntshuwa, mme kamore ya ho omisa e a omiswa. Kamora dihora tse 30-70, ho tloswa dihora tse 18-20. 3. Ha o lokisa seretse, qala ka ho hlahloba hore na seretse se fihlella ditlhoko tsa moralo. Ha o fihlela ditlhoko, lokisa seretse ho ya ka setshwantsho. Kamora tlhahlobo, romela ka phaposing ya ho omisa e nang le mocheso o phahameng.
4. Kamora hore mongobo oa billet ea ho sintering ea karabelo o fihle ho 1%, e ntše, hloekisa billet ka moea o fokang 'me u e behe boima. Kenya likarolo tse 2.9 tsa tšepe ea silicon. Naetrojene e ka pompeloa ka har'a vacuum sintering. Ts'ebetso ea ho sintering ka mocheso o tlase oa 700 ka lihora tse 4; Mocheso o mahareng 1400, lihora tse 5; Mocheso o phahameng 2200, lihora tse 6. Ha mocheso o theoha lihora tse 12 'me o fihla ho 150, emisa ts'ebetso ka har'a ontong 'me u bule ontong.
5. Ka mora hore sehlahiswa sa kalafo ya ho phatloha ha lehlabathe se tswe, silicon standard Chartered hodima yona e a silwa mme e silwa ka ho phatloha ha lehlabathe.
6. Morero oa lihlahisoa tsa kalafo ea oxidation ke ho tlosa li-oxide tse hlahisoang nakong ea ts'ebetso ea ho sila. Sehlahisoa se futhumatsoa ho 1350 ka lihora tse 24 ka ontong ea oxidation ebe sea pholisoa ka tlhaho. Kamora ho tlosoa, se bolokoa ka har'a polokelo ka tlhahlobo.
Lisebelisoa tse tala le tekanyo e amohetsoeng ke mokhoa oa tlhahiso ena ke tsa saense le tse utloahalang, e le hore sebaka se se nang letho se be le sebaka se lekaneng 'me sebaka se se nang letho se be le bongata bo betere; Sekhahla se betere sa ho futhumatsa, mocheso le nako ea ho tšoara li netefatsa matla a holimo a ho kobeha ha sehlahisoa. Tshebetso e ka sehloohong le boleng ba lihlahisoa tse hlahisoang ke mokhoa ona li fihlile boemong bo tsoetseng pele ba machaba.
Mokhoa o ka holimo ke oa tlhahiso ea silicon carbide e sebetsang hantle, haeba u hloka tlhaiso-leseling e batsi, ka kopo ikutloe u lokolohile ho ikopanya le rona!
Nako ea poso: Phuptjane-13-2023