③ Thepa ea ceramic e sebelisoang haholo e thibelang likulo
Ho tloha lekholong la bo21 la lilemo, lirafshoa tse thibelang likulo li tsoetse pele ka potlako, 'me ho na le mefuta e mengata, ho kenyelletsa alumina, silicon carbide, boron carbide, silicon nitride, titanium boride, joalo-joalo, tseo har'a tsona li-alumina ceramics (Al₂O₃), silicon carbide ceramics (SiC), boron carbide ceramics (B4C) ke tsona tse sebelisoang ka ho fetisisa.
Li-ceramics tsa aluminium li na le boima bo phahameng ka ho fetisisa, empa boima bo batla bo le tlaase, moeli oa ts'ebetso o tlaase, theko e tlaase, ho ea ka bohloeki e arotsoe ka 85/90/95/99 aluminium ceramics, boima bo lumellanang le theko le tsona lia eketseha. ka ho latellana.
| Lisebelisoa | Boima ba 'mele /(kg*m²) | Modulus oa elastic / (GN*m²) | HV | E lekana le theko ea alumina |
| Boron carbide | 2500 | 400 | 30000 | X 10 |
| Aluminium oxide | 3800 | 340 | 15000 | 1 |
| Titanium diboride | 4500 | 570 | 33000 | X10 |
| Silicon carbide | 3200 | 370 | 27000 | X5 |
| Ho khabisa ka oxidation | 2800 | 415 | 12000 | X10 |
| BC/SiC | 2600 | 340 | 27500 | X7 |
| Li-ceramics tsa khalase | 2500 | 100 | 6000 | 1 |
| Silicon nitride | 3200 | 310 | 17000 | X5 |
Papiso ea thepa ea li-ceramics tse fapaneng tsa bulletproof
Silicon carbide ceramic density e batla e le tlase, e thata haholo, ke lirafshoa tsa moralo tse theko e tlaase, ka hona hape ke lirafshoa tse thibelang likulo tse sebelisoang ka ho fetisisa China.
Li-ceramics tsa boron carbide li na le boima bo tlaase ka ho fetisisa le boima bo phahameng ka ho fetisisa har'a li-ceramics tsena, empa ka nako e ts'oanang, litlhoko tsa bona tsa theknoloji ea ho sebetsana le tsona li phahame haholo, tse hlokang mocheso o phahameng le khatello e phahameng ea khatello, kahoo litšenyehelo le tsona ke tse phahameng ka ho fetisisa har'a lirafshoa tsena tse tharo.
Ha ho bapisoa le lisebelisoa tsena tse tharo tse tloaelehileng tse thibelang likulo, li-ceramics tsa alumina bulletproof li na le litšenyehelo tse tlase haholo, empa ts'ebetso ea bulletproof e tlase haholo ho feta silicon carbide le boron carbide, kahoo likarolo tsa hona joale tsa tlhahiso ea malapeng tsa li-bulletproof ceramics ka silicon carbide le boron carbide bulletproof, ha li-ceramics tsa alumina ha li fumanehe.Leha ho le joalo, alumina e le 'ngoe ea kristale e ka sebelisoa ho lokisa lirafshoa tse bonaletsang, tse sebelisoang haholo e le lisebelisoa tse pepeneneng tse nang le mesebetsi e bobebe,' me li sebelisoa lisebelisoa tsa sesole joalo ka limaske tse thibelang likulo tsa lesole ka bomong, Windows ea ho bona metsu, Windows ea ho shebella koloi le li-periscopes tse tsamaeang ka tlas'a metsi.
④Lisebelisuoa tse peli tse tsebahalang haholo tsa ceramic tse thibelang likulo
Li-ceramics tsa silicon carbide bulletproof
The silicon carbide covalent bond e matla haholo 'me e ntse e na le matla a matla a ho kopanya mocheso o phahameng.Karolo ena ea sebopeho e fana ka li-ceramics tsa silicon carbide matla a matla, boima bo phahameng, ho hanyetsa ho roala, ho hanyetsa kutu, ho ts'oaroa ha mocheso o phahameng, ho hanyetsa mocheso o motle oa mocheso le lintho tse ling.Ka nako e ts'oanang, theko ea silicon carbide ceramic e leka-lekaneng, e theko e tlaase, ke e 'ngoe ea lisebelisoa tsa ts'ireletso ea lihlomo tse ts'episang ka ho fetisisa.
Li-ceramics tsa silicon carbide li na le sebaka se pharaletseng sa nts'etsopele tšimong ea tšireletso ea lihlomo, 'me litšebeliso tsa tsona lefapheng la lisebelisoa tsa motho ka mong le likoloi tse khethehileng li atisa ho ba tse fapa-fapaneng.Ha e sebelisoa e le thepa ea tšireletso, ha ho nahanoa ka litšenyehelo le liketsahalo tse khethehileng tsa kopo le lintlha tse ling, hangata ke tlhophiso e nyenyane ea liphanele tsa ceramic le li-backplane tse kopantsoeng tse kopantsoeng ka har'a poleiti e entsoeng ka ceramic, ho hlōla ho hlōleha ha li-ceramics ka lebaka la khatello ea kelello, le ho etsa bonnete ba hore ho kenella ha projectile ho senya karolo e le 'ngoe feela ntle le ho senya lihlomo tsohle.
Li-ceramics tse thibelang lithunya tsa boron carbide
Boron carbide ke ho thatafala ha thepa e tsejoang ka mor'a thepa e thata ka ho fetisisa ea taemane le cubic boron nitride, boima ba ho fihla ho 3000kg/mm²;Boima bo tlase, ke 2.52g/cm³ feela, e leng 1/3 ea tšepe;Modulus e phahameng ea elastic, 450GPa;Sebaka se phahameng sa ho qhibiliha, hoo e ka bang 2447 ℃;Coefficient ea ho atolosa mocheso e tlaase 'me conductivity ea mocheso e phahame.Ho feta moo, boron carbide e na le botsitso bo botle ba lik'hemik'hale, acid le alkali corrosion resistance, mocheso oa kamore ha e sebetsane le acid le setsi, 'me e na le metsi a mangata a inorganic compound, feela ka hydrofluoric acid-sulfuric acid, hydrofluoric acid-nitric acid e kopantsoeng le mokelikeli o fokolang. ;'Me litšepe tse ngata tse qhibilihisitsoeng ha li kolobise, ha li sebetse.Boron carbide e boetse e na le bokhoni bo botle ba ho monya li-neutron, tse sa fumaneheng lisebelisoa tse ling tsa ceramic.B4C e na le letsoalo le tlase ka ho fetesisa la lirafshoa tse 'maloa tse sebelisoang hangata, tse kopantsoeng le modulus e phahameng ea elasticity, e etsang hore e be khetho e ntle bakeng sa lisebelisoa tse libakeng tsa lihlomo tsa sesole le tsa sebaka.Bothata bo ka sehloohong ba B4C ke hore e theko e boima (makhetlo a ka bang 10 ho ea alumina) le brittle, e fokotsang tšebeliso ea eona e pharaletseng e le lihlomo tse sireletsang tsa karolo e le 'ngoe.
⑤Mokhoa oa ho lokisa lirafshoa tse thibelang likulo.
| Theknoloji ea ho itokisa | Litšobotsi tsa ts'ebetso | |
| Molemo | ||
| Mocheso o chesang oa sintering | Ka mocheso o tlase oa sintering le nako e khuts'oane ea sintering, li-ceramics tse nang le lijo-thollo tse ntle le letsoalo le lekanyelitsoeng le thepa e ntle ea mochini li ka fumanoa. | |
| Ho fokotsa khatello e phahameng haholo | Finyella ka potlako, mocheso o tlase oa sintering, sekhahla sa densification se eketsehile. | |
| Hot isostatic pressing sintering | Li-ceramics tse nang le ts'ebetso e phahameng le sebopeho se rarahaneng li ka lokisoa ka mocheso o tlase oa sintering, nako e khuts'oane ea rapping le shrinkage e tšoanang ea 'mele o mobe. | |
| Ho futhumatsa ka microwave | Potlako e potlakileng, ho futhumatsa seaparo sa zero gradient, ho ntlafatsa sebopeho sa thepa, ho ntlafatsa ts'ebetso ea thepa, ts'ebetso e phahameng le ho boloka matla. | |
| Ho ntša plasma sintering | Nako ea sintering e khuts'oane, mocheso oa sintering o tlase, ts'ebetso ea ceramic e ntle, 'me boima ba lisebelisoa tse phahameng tsa sintering gradient bo phahame. | |
| Mokhoa oa ho qhibiliha ha mahlaseli a plasma | Thepa e tala ea phofo e qhibilihisoa ka ho feletseng, ha e thibeloe ke boholo ba karoloana ea phofo, ha e hloke sebaka se tlaase sa ho qhibiliha, 'me sehlahisoa se na le sebopeho se teteaneng. | |
| Reaction sintering | Haufi le theknoloji ea tlhahiso ea boholo ba marang-rang, mokhoa o bonolo, theko e tlaase, e ka lokisa boholo bo boholo, likarolo tse rarahaneng tsa sebōpeho. | |
| Ho qoela ka ntle ho khatello | Sehlahisoa se na le ts'ebetso e ntle haholo ea mocheso o phahameng, mokhoa o bonolo oa sintering le theko e tlaase.Ho na le mekhoa e mengata e loketseng ea ho theha, e ka sebelisoang bakeng sa likarolo tse kholo le tse teteaneng, hape e loketse tlhahiso e kholo ea indasteri. | |
| Mokelikeli oa mokhahlelo oa sintering | Mocheso o tlase oa sintering, porosity e tlase, lijo-thollo tse ntle, ho teteana holimo, matla a phahameng | |
| Theknoloji ea ho itokisa | Litšobotsi tsa ts'ebetso | |
| Monyetla | ||
| Mocheso o chesang oa sintering | Ts'ebetso e rarahane haholoanyane, lisebelisoa tsa hlobo le litlhoko tsa lisebelisoa li phahame, katleho ea tlhahiso e tlaase, theko ea tlhahiso e phahame, 'me sebopeho se ka lokisoa feela ka lihlahisoa tse bonolo. | |
| Ho fokotsa khatello e phahameng haholo | E ka lokisa feela lihlahisoa tse nang le libopeho tse bonolo, tlhahiso e tlase, matsete a lisebelisoa tse phahameng, maemo a holimo a sintering, le tšebeliso e phahameng ea matla.Hona joale, ke feela sethaleng sa lipatlisiso | |
| Hot isostatic pressing sintering | Theko ea thepa e phahame, 'me boholo ba workpiece e lokelang ho sebetsoa bo lekanyelitsoe | |
| Ho futhumatsa ka microwave | Theknoloji ea theory e hloka ntlafatso, lisebelisoa li haella, 'me ha li so sebelisoe haholo | |
| Ho ntša plasma sintering | Khopolo ea motheo e hloka ho ntlafatsoa, ts'ebetso e rarahane, 'me litšenyehelo li phahame, tse sa kang tsa etsoa indasteri. | |
| Mokhoa oa ho qhibiliha ha mahlaseli a plasma | Litlhoko tse phahameng tsa thepa ha li e-s'o finyelloe bakeng sa tšebeliso e atileng. | |
| Reaction sintering | Silicon e setseng e fokotsa thepa ea mochini oa mocheso o phahameng, ho hanyetsa kutu, le khanyetso ea oxidation ea thepa. | |
| Ho qoela ka ntle ho khatello | Mocheso oa sintering o phahame, ho na le porosity e itseng, matla a batla a le tlaase, 'me ho na le hoo e ka bang 15% ea ho fokotseha ha molumo. | |
| Mokelikeli oa mokhahlelo oa sintering | E sekametse ho deformation, shrinkage e kholo mme ho thata ho laola ho nepahala ha dimensional | |
| Ceramic |
| AL2O3 .B4 C .SiC |
| AL2O3 |
| AL2O3 .B4 C .SiC |
| AL2O3 |
| AL2O3 .B4 C .SiC |
| AL2O3 |
| B4 C .SiC |
| AL2O3 .B4 C .SiC |
| .SiC |
Ntlafatso ea lirafshoa tsa bulletproof
Le hoja matla a ho thibela likulo a silicon carbide le boron carbide a le maholo haholo, bothata ba ho robeha ha fracture le bofokoli bo bobe ba lirafshoa tsa karolo e le 'ngoe li ke ke tsa hlokomolohuoa.Nts'etsopele ea mahlale a morao-rao le thekenoloji e hlahisitse litlhoko tsa ts'ebetso le moruo oa lirafshoa tse sa keneleng likulo: mesebetsi e mengata, ts'ebetso e phahameng, boima bo bobebe, litšenyehelo tse tlase le polokeho.Ka hona, lilemong tsa morao tjena, litsebi le litsebi li na le tšepo ea ho finyella matla a matla, a bobebe le a moruo a li-ceramics ka ho fetola li-micro-adjustment, ho kenyelletsa le likarolo tse ngata tsa ceramic system composite, li-ceramics tse sebetsang hantle, moralo oa sebopeho, joalo-joalo, 'me lihlomo tse joalo li bobebe. boima ba 'mele ha bo bapisoa le lihlomo tsa kajeno,' me u ntlafatse ts'ebetso ea mobile ea lihlopha tsa ntoa.
Li-ceramics tse sebetsang hantle li bonts'a liphetoho tse tloaelehileng tsa thepa ka moralo oa microcosmic.Mohlala, titanium boride le tšepe ea titanium le aluminium oxide, silicon carbide, boron carbide, silicon nitride le aluminium ea tšepe le lisebelisoa tse ling tsa tšepe / ceramic composite, ts'ebetso ea phetoho ea gradient haufi le boemo bo botenya, ke hore, ho lokisoa ha boima bo phahameng. phetoho ho lirafshoa tse thibelang likulo tse phahameng tse thata.
Li-ceramics tsa nanometer multiphase li entsoe ka likaroloana tsa ho hasana tsa nanometer kapa li-nanometer tse kentsoeng ho lirafshoa tsa matrix.Tse kang SiC-Si3N4-Al2O3, B4C-SiC, joalo-joalo, ho thatafala, ho tiea le matla a li-ceramics li na le ntlafatso e itseng.Ho tlalehoa hore linaha tsa Bophirimela li ntse li ithuta ka sintering ea nano-scale powder ho lokisetsa li-ceramics tse nang le boholo ba lijo-thollo tse mashome a li-nanometers ho finyella matla a lintho tse bonahalang le ho tiea, 'me li-ceramics tse thibelang likulo li lebeletsoe ho finyella katleho e kholo tabeng ena.
Akaretsa
Ebang ke lirafshoa tsa karolo e le 'ngoe kapa lirafshoa tsa mekhahlelo e mengata, lisebelisoa tse ntle ka ho fetisisa tsa bulletproof ceramic kapa tse ke keng tsa aroloa ho tloha silicon carbide, boron carbide lisebelisoa tsena tse peli.Haholo-holo bakeng sa lisebelisoa tsa boron carbide, ka nts'etsopele ea theknoloji ea sintering, thepa e babatsehang ea boron carbide ceramics e ntse e hlahella le ho feta, 'me likopo tsa bona tšimong ea bulletproof li tla ntlafatsoa ka ho eketsehileng.
Nako ea poso: Dec-14-2023