③Esona sixhobo sixhaphakileyo sisetyenziswa kwiceramic yokukhusela iimbumbulu
Ukusukela kwinkulungwane yama-21, iiseramics ezikhusela iimbumbulu ziye zaphuhliswa ngokukhawuleza, kwaye kukho iintlobo ezininzi, kubandakanya i-alumina, i-silicon carbide, i-boron carbide, i-silicon nitride, i-titanium boride, njl. i-boron carbide ceramics (B4C) zezona zisetyenziswa kakhulu.
Iiseramikhi ze-alumina zinoxinano oluphezulu, kodwa ukuqina kusezantsi kakhulu, umda wokulungisa uphantsi, ixabiso lisezantsi, ngokobunyulu bohlulwe lwaba zii-85/90/95/95/99 ze-alumina ceramics, ubunzima obuhambelanayo kunye nexabiso nazo zonyuswa. ekujikeni.
| Izinto eziphathekayo | Ubuninzi /(kg*m²) | Imodyuli yeelastiki / (GN*m²) | HV | Ilingana nexabiso le-alumina |
| I-Boron carbide | 2500 | 400 | 30000 | X 10 |
| I-aluminiyam oxide | 3800 | 340 | 15000 | 1 |
| I-Titanium diboride | 4500 | 570 | 33000 | X10 |
| I-silicon carbide | 3200 | 370 | 27000 | X5 |
| Ukufakwa kwe-oxidation | 2800 | 415 | 12000 | X10 |
| BC/SiC | 2600 | 340 | 27500 | X7 |
| Iiseramikhi zeglasi | 2500 | 100 | 6000 | 1 |
| I-silicon nitride | 3200 | 310 | 17000 | X5 |
Ukuthelekiswa kweempawu zeeramics ezahlukeneyo ze-bulletproof
Uxinaniso lwe-silicon carbide ceramic luphantsi, ubunzima obuphezulu, luxabiso olusebenzayo lweseramikhi, ngoko ke ikwayeyona isetyenziswa kakhulu kwiiseramikhi ze-bulletproof e-China.
I-Boron carbide ceramics inoxinano oluphantsi kunye nobunzima obuphezulu phakathi kwezi zixhobo zobumba, kodwa kwangaxeshanye, iimfuno zabo zobugcisa bokucubungula ziphezulu kakhulu, zifuna ukushisa okuphezulu kunye noxinzelelo oluphezulu, ngoko ke ixabiso likwaphezulu phakathi kwezi zintathu zeseramics.
Xa kuthelekiswa nezi zintathu zixhaphakileyo izixhobo zeseramikhi zeceramic, i-alumina bulletproof ceramics zinexabiso eliphantsi, kodwa ukusebenza kwembumbulu kungaphantsi kakhulu kune-silicon carbide kunye ne-boron carbide, ngoko ke iiyunithi zangoku zemveliso yasekhaya yeeseramikhi ze-bulletproof kwi-silicon carbide kunye ne-boron carbide bulletproof, ngelixa. iiseramikhi zealumina zinqabile.Nangona kunjalo, i-alumina yekristale enye ingasetyenziselwa ukulungisa iiseramikhi ezicacileyo, ezisetyenziswa ngokubanzi njengezinto ezicacileyo ezinemisebenzi yokukhanya, kwaye zisetyenziswa kwizixhobo zomkhosi ezinjengeemaski zejoni elingangenwa bulletproof, iWindows yokubona imijukujelwa, iWindows yokujonga isithuthi, kunye neeperiscopes zangaphantsi kolwandle.
④Izimbini zezona mathiriyeli zidumileyo zeceramic
Iiseramikhi ze-silicon carbide bulletproof
Ibhondi ye-silicon carbide covalent yomelele kakhulu kwaye isenamandla aphezulu okudibanisa kubushushu obuphezulu.Eli nqaku lolwakhiwo linika i-silicon carbide ceramics amandla abalaseleyo, ukuqina okuphezulu, ukuxhathisa ukunxiba, ukumelana nokugqwala, ukuhanjiswa kwe-thermal ephezulu, ukuxhathisa ukothuka kwe-thermal kunye nezinye iipropathi.Kwangaxeshanye, ixabiso le-silicon carbide ceramic liphakathi, libiza imali eninzi, yenye yezona zinto zithembisayo ezisebenza kakhulu zokukhusela izixhobo.
I-Silicon carbide ceramics ineendawo ezibanzi zophuhliso kwintsimi yokukhusela izixhobo, kwaye izicelo zabo kwintsimi yezixhobo zomntu ngamnye kunye neenqwelo ezikhethekileyo zivame ukuhlukahluka.Xa isetyenziswa njengesixhobo sokukhusela isikrweqe, kuthathelwa ingqalelo iindleko kunye nezihlandlo ezikhethekileyo zesicelo kunye nezinye izinto, ngokuqhelekileyo ilungiselelo elincinci leepaneli ze-ceramic kunye ne-backplane edibeneyo edibeneyo kwi-ceramic composite plate target, ukoyisa ukusilela kweekeramics ngenxa yoxinzelelo lwe-tensile, kunye ukuqinisekisa ukuba ukungena kweprojectile kwaphula kuphela isiqwenga esinye ngaphandle kokonakalisa isikrweqe sonke.
Iiseramikhi zeBoron carbide bulletproof
I-Boron carbide bubulukhuni bemathiriyeli eyaziwayo emva kwemathiriyeli yedayimane kunye ne-cubic boron nitride, ubulukhuni obufikelela kwi-3000kg/mm²;Uxinzelelo luphantsi, kuphela i-2.52g/cm³, eyi-1/3 yentsimbi;Imodyuli eneelastiki ephezulu, 450GPa;Indawo yokunyibilika ephezulu, malunga ne-2447℃;I-coefficient yokwandisa i-thermal iphantsi kwaye i-thermal conductivity iphezulu.Ukongeza, i-boron carbide inozinzo oluhle lweekhemikhali, i-asidi kunye ne-alkali yokuxhathisa umhlwa, kwiqondo lobushushu legumbi alisebenzi kunye ne-asidi kunye nesiseko kunye nolwelo oluninzi lwe-inorganic compound, kuphela kwi-hydrofluoric acid-sulfuric acid, i-hydrofluoric acid-i-nitric acid exutywe ulwelo inomhlwa ocothayo. ;Kwaye uninzi lwezinyithi ezityhidiweyo azinamanzi, musa ukwenza.I-Boron carbide nayo inekhono elihle lokufunxa i-neutron, engafumanekiyo kwezinye izinto ze-ceramic.I-B4C inoxinano olusezantsi lweeseramikhi zesikrweqe eziqhelekileyo ezisetyenziswayo, ezidityaniswe nemodyuli ephezulu yokunwebeka, iyenza ibe lukhetho olulungileyo lwezinto ezikwindawo yesikrweqe somkhosi kunye nendawo.Ingxaki enkulu ye-B4C kukuba iyabiza (malunga namaxesha ali-10 e-alumina) kunye ne-brittle, ethintela ukusetyenziswa kwayo okubanzi njengesikrweqe sokukhusela isigaba esinye.
⑤Ukulungiselela indlela yokwenziwa kweeseramikhi ezingangenwa bulletproof.
| Ukulungiselela iteknoloji | Iimpawu zenkqubo | |
| Inzuzo | ||
| I-Hot press sintering | Ngobushushu obuphantsi be-sintering kunye nexesha elifutshane le-sintering, iiseramikhi ezineenkozo ezicolekileyo kunye noxinaniso oluphezulu kunye neempawu ezilungileyo zoomatshini zinokufumaneka. | |
| Uxinzelelo oluphezulu lwe-sintering | Ukufikelela ngokukhawuleza, ubushushu obuphantsi be-sintering, izinga loxinaniso linyukile. | |
| I-isostatic eshushu yokucofa sintering | I-Ceramics enomsebenzi ophezulu kunye nokumila okuyinkimbinkimbi kunokulungiswa ngobushushu obuphantsi be-sintering, ixesha elifutshane lokukrazula kunye nokuncipha okufanayo komzimba ombi. | |
| I-microwave sintering | Ukuxinana okukhawulezayo, ukufudumeza okulinganayo kwe-zero gradient, ukuphucula ubume bemathiriyeli, ukuphucula ukusebenza kwezinto, ukusebenza kakuhle okuphezulu kunye nokonga amandla. | |
| Ukukhupha i-plasma sintering | Ixesha le-sintering lifutshane, iqondo lobushushu le-sintering liphantsi, ukusebenza kwe-ceramic kulungile, kwaye ingxinano yezinto eziphezulu ze-sintering gradient iphezulu. | |
| Indlela yokunyibilikisa umqa wePlasma | I-powder ekrwada iyancibilika ngokupheleleyo, ayithintelwanga yi-particle size ye powder, ayifuni i-melting point flux, kwaye imveliso inesakhiwo esixineneyo. | |
| Reaction sintering | Itekhnoloji yokuvelisa ubungakanani obusondeleyo, inkqubo elula, ixabiso eliphantsi, inokulungiselela ubungakanani obukhulu, iinxalenye zemilo entsonkothileyo. | |
| Sintering ngaphandle koxinzelelo | Imveliso inomsebenzi oncomekayo wobushushu obuphezulu, inkqubo ye-sintering elula kunye nexabiso eliphantsi.Zininzi iindlela ezifanelekileyo zokubumba, ezinokuthi zisetyenziselwe iindawo ezinzima kunye nezityebileyo ezinkulu, kwaye zilungele imveliso yemizi-mveliso emikhulu. | |
| Ulwelo lwesigaba sintering | Ubushushu obuphantsi be-sintering, i-porosity ephantsi, iinkozo ezintle, ubuninzi obuphezulu, amandla aphezulu | |
| Ukulungiselela iteknoloji | Iimpawu zenkqubo | |
| Ukungabikho | ||
| I-Hot press sintering | Inkqubo inzima ngakumbi, izinto zokubumba kunye neemfuno zezixhobo ziphezulu, ukusebenza kakuhle kwemveliso kuphantsi, ixabiso lemveliso liphezulu, kwaye imilo inokulungiswa kuphela ngeemveliso ezilula. | |
| Uxinzelelo oluphezulu lwe-sintering | Ingalungiselela kuphela iimveliso ezinemilo elula, imveliso ephantsi, utyalo-mali oluphezulu lwezixhobo, iimeko eziphezulu ze-sintering, kunye nokusetyenziswa kwamandla aphezulu.Okwangoku, kuphela kwinqanaba lophando | |
| I-isostatic eshushu yokucofa sintering | Iindleko zezixhobo ziphezulu, kwaye ubungakanani bomsebenzi oza kucutshungulwa bukhawulelwe | |
| I-microwave sintering | Itekhnoloji yethiyori ifuna ukuphuculwa, izixhobo azikho, kwaye ayikasetyenziswa ngokubanzi | |
| Ukukhupha i-plasma sintering | Ithiyori esisiseko kufuneka iphuculwe, inkqubo inzima, kwaye ixabiso liphezulu, elingekabikho kwimizi-mveliso. | |
| Indlela yokunyibilikisa umqa wePlasma | Iimfuno zezixhobo eziphezulu azikaphunyezwa ukuba zisetyenziswe ngokubanzi. | |
| Reaction sintering | I-silicon eshiyekileyo inciphisa iipropathi zobushushu obuphezulu, ukuxhathisa ukubola, kunye nokumelana ne-oxidation yezinto. | |
| Sintering ngaphandle koxinzelelo | Ubushushu be-sintering buphezulu, kukho i-porosity ethile, amandla aphantsi, kwaye kukho malunga ne-15% yokunciphisa umthamo. | |
| Ulwelo lwesigaba sintering | Iqhelekile kwi-deformation, ukushwabana okukhulu kwaye kunzima ukulawula ukuchaneka kwe-dimensional | |
| I-Ceramic |
| AL2O3 .B4 C .SiC |
| AL2O3 |
| AL2O3 .B4 C .SiC |
| AL2O3 |
| AL2O3 .B4 C .SiC |
| AL2O3 |
| B4 C .SiC |
| AL2O3 .B4 C .SiC |
| .SiC |
Uphuculo lweeseramikhi zeBulletproof
Nangona amandla embumbulu e-silicon carbide kunye ne-boron carbide inkulu kakhulu, ingxaki yokuqina kokwaphuka kunye ne-brittleness engalunganga yesigaba esinye seekeramics ayinakuhoywa.Ukuphuhliswa kwenzululwazi yanamhlanje kunye nobuchwepheshe bubeke phambili iimfuno zokusebenza kunye noqoqosho lweeramics ze-bulletproof: imisebenzi emininzi, ukusebenza okuphezulu, ubunzima obulula, ixabiso eliphantsi kunye nokhuseleko.Ke ngoko, kwiminyaka yakutshanje, iingcali kunye nabaphengululi banethemba lokufezekisa ukomelezwa, ukukhaphukhaphu kunye noqoqosho lweeseramics ngohlengahlengiso oluncinci, kubandakanywa nenkqubo ye-ceramic ehlanganisiweyo yamacandelo amaninzi, iiseramics ezisebenzayo ze-gradient, uyilo lolwakhiwo, njl. ubunzima xa kuthelekiswa nezikrweqe zanamhlanje, kunye nokuphucula ngcono ukusebenza kweeyunithi zokulwa.
Iiseramics ezikumgangatho osebenzayo zibonisa utshintsho oluqhelekileyo kwiipropathi zezinto eziphathekayo ngoyilo lwe-microcosmic.Ngokomzekelo, i-titanium boride kunye ne-titanium yesinyithi kunye ne-aluminium oxide, i-silicon carbide, i-boron carbide, i-silicon nitride kunye ne-aluminium yensimbi kunye nezinye iinkqubo zetsimbi / ze-ceramic composite, ukusebenza kwe-gradient utshintsho ecaleni kwendawo yobukhulu, oko kukuthi, ukulungiswa kobunzima obuphezulu. inguqu ukuya kukuqina okuphezulu kweeseramikhi ze-bulletproof.
I-Nanometer i-multiphase ceramics yenziwe nge-submicron okanye i-nanometer dispersion particles ezongeziweyo kwi-matrix ceramics.Ezifana ne-SiC-Si3N4-Al2O3, B4C-SiC, njl., ukuqina, ukuqina kunye namandla eekeramics kunokuphuculwa okuthile.Kuxelwa ukuba amazwe aseNtshona afunda i-sintering ye-nano-scale powder ukuze alungiselele i-ceramics kunye nobukhulu obuziinkozo obungamashumi e-nanometers ukuphumeza amandla ezinto eziphathekayo kunye nokuqina, kunye neeramics ze-bulletproof kulindeleke ukuba zifezekise ukuphumelela okukhulu kulo mba.
Shwankathela
Nokuba ziiseramics zesigaba esinye okanye iiseramics zamanqanaba amaninzi, ezona zixhobo zibalaseleyo zeceramic ezikhuselayo okanye azinakwahlulwa kwi-silicon carbide, i-boron carbide ezi zixhobo zimbini.Ngokukodwa kwizixhobo ze-boron carbide, kunye nophuhliso lweteknoloji ye-sintering, iipropati ezigqwesileyo ze-boron carbide ceramics ziba zivelele ngakumbi, kwaye izicelo zabo kwintsimi ye-bulletproof ziya kuphuhliswa ngakumbi.
Ixesha lokuposa: Dec-14-2023