Alumina ntụ ntụ itunanya na 3D obibi akwụkwọ
Ije ije n'ime ụlọ nyocha nke Northwestern Polytechnical University, ihe na-agwọ ọkụIhe nbipute 3D na-akụtu ntakịrị, na ọkụ laser na-akpụ akpụ nke ọma na seramiiki slurry. Naanị awa ole na ole ka e mesịrị, a na-egosipụta isi seramiiki nke nwere ihe mgbagwoju anya dị ka maze - a ga-eji ya mee ihe na-atụgharị turbine nke engines ụgbọ elu. Prọfesọ Su Haijun, bụ́ onye na-ahụ maka ọrụ ahụ, rụtụrụ aka n’ihe ndị ahụ dị nro ma kwuo, sị: “Afọ atọ gara aga, anyị anwaghị anwa echedị kpọmkwem otú ahụ.
N'otu oge, alumina ceramics dị ka "ụmụ akwụkwọ nsogbu" n'ọhịa nkeMbipụta 3D- ike dị elu, oke okpomọkụ na-eguzogide, ezigbo mkpuchi, ma ozugbo e bipụtara ya, ọ nwere ọtụtụ nsogbu. N'okpuru usoro ọdịnala, ntụ ntụ alumina na-adịghị mma ma na-egbochikarị isi mbipụta; ọnụ ọgụgụ mbelata n'oge sintering nwere ike ịdị elu dị ka 15% -20%, na akụkụ ndị e ji nnukwu mbọ bipụta ga-emebi ma gbawaa ozugbo ọkụ; ihe owuwu siri ike? Ọ bụ ọbụna ihe okomoko. Ndị injinia na-enwe nsogbu: “Ihe a dị ka onye na-ese ihe isi ike, nke nwere echiche ọjọọ ma aka ezughị ezu.”
1. Usoro Russian: Ịtinye "ihe agha seramiiki" naaluminommatrix
Oge ntụgharị mbụ sitere na mgbanwe na imepụta ihe. N'afọ 2020, ndị ọkà mmụta sayensị ihe onwunwe sitere na National University of Science and Technology (NUST MISIS) nke Russia kwupụtara teknụzụ na-akpaghasị. Kama ịgwakọta ntụ ntụ ntụ ntụ, ha na-etinye ntụ ntụ dị elu nke aluminom n'ime autoclave wee jiri hydrothermal oxidation mee ihe iji "na-eto" oyi akwa nke ihe nkiri aluminom oxide nke nwere oke a na-achịkwa nke ọma n'elu akụkụ aluminom ọ bụla, dị ka itinye akwa nke nano-larịị ihe agha na bọl aluminom. Nke a "isi-shell Ọdịdị" ntụ ntụ na-egosi ịtụnanya arụmọrụ n'oge laser 3D obibi (teknụzụ SLM): ike bụ 40% elu karịa nke dị ọcha aluminum ihe, na elu-okpomọkụ kwụsie ike nke ukwuu, na-ezute kpọmkwem ụgbọ elu-ọkwa chọrọ.
Prọfesọ Alexander Gromov, onye ndu oru ngo ahụ, mere ntụnyere doro anya: "N'oge gara aga, ihe ndị mejupụtara dị ka salads - nke ọ bụla na-ahụ maka azụmahịa nke ya; ntụ ntụ anyị dị ka sandwiches - aluminum na alumina na-ata ibe ha oyi akwa, ọ dịghịkwa ihe ọ bụla nwere ike ime ma ọ bụrụ na nke ọzọ." Nke a siri ike njikọ na-enye ohere ihe na-egosi ike ya na ụgbọ elu engine akụkụ na ultra-light ahu okpokolo agba, na ọbụna na-amalite aka n'ókèala nke titanium alloys.
2. Amamihe ndị China: anwansi nke ceramics "itinye".
Ebe kachasị ihe mgbu nke alumina seramiiki ebipụta bụ mbelata mbelata - were ya na i ji nlezianya gwakọta ihe oyiyi ụrọ, ọ na-adaba na nha poteto ozugbo ọ banyere n'ime oven. Ego ole ka ọ ga-ada? Na mbido 2024, nsonaazụ nke ndị otu Prọfesọ Su Haijun bipụtara na Mahadum Northwwest Polytechnical na Journal of Materials Science & Teknụzụ wepụrụ ụlọ ọrụ ahụ: ha nwetara ihe fọrọ nke nta ka ọ bụrụ ihe efu alumina seramiiki seramiiki nwere ọnụ ahịa mbelata nke naanị 0.3%.
Ihe nzuzo bụ ịgbakwunyealuminom ntụ ntụna alumina wee kpọọ "anwansi ikuku".
Tinye ntụ ntụ aluminom: Gwakọta 15% nke ezigbo ntụ ntụ aluminom n'ime slurry seramiiki
Jikwaa ikuku: Jiri argon gas nchebe na mmalite nke sintering iji gbochie aluminum ntụ ntụ si oxidizing
Ngbanwe Smart: Mgbe okpomoku ruru 1400°C, gbanwee ikuku na ikuku na mberede
Ọdịda n'ime ọnọdụ: Aluminom ntụ ntụ na-agbaze ozugbo n'ime ụmụ irighiri mmiri ma oxidizes na aluminom oxide, na mgbasawanye olu na-ebelata mkpụkọ.
3. Binder mgbanwe: aluminom ntụ ntụ na-atụgharị ghọọ "gluu na-adịghị ahụ anya"
Ọ bụ ezie na ndị otu Russia na ndị China na-arụsi ọrụ ike na ngbanwe ntụ ntụ, ụzọ teknụzụ ọzọ ejirila nwayọọ tozuo oke - iji ntụ ntụ aluminom dị ka ihe nkedo. seramiki omenalaMbipụta 3Dndị na-ekekọta bụ ọtụtụ resins organic, nke ga-ahapụ oghere mgbe ọkụ na-ere ọkụ n'oge nkwụsị. Patent 2023 otu ụlọ na-ewe ụzọ dị iche: ime ntụ ntụ aluminom ka ọ bụrụ ihe nkedo dabere na mmiri47.
N'oge a na-ebi akwụkwọ, nozzles na-efesa "glue" nke nwere 50-70% ntụ ntụ aluminum na oyi akwa aluminum oxide. Mgbe ọ na-abịa n'oge nkwụsịtụ, a na-adọta agụụ na ikuku oxygen na-agafe, na ntụ ntụ aluminom na-agbanye na aluminum oxide na 200-800 ° C. Ihe e ji mara nke mgbasawanye olu nke ihe karịrị 20% na-enye ya ohere imeju pores na-arụsi ọrụ ike ma belata nkwụsị nke ihe na-erughị 5%. "Ọ dị ka ịkwatu ihe mkpofu na ịrụ mgbidi ọhụrụ n'otu oge, na-ejuputa oghere nke gị!" otu injinia kọwara ya otú a.
4. Nkà nke irighiri ihe: mmeri nke ntụ ntụ okirikiri
"ọdịdị" nke ntụ ntụ alumina na-atụghị anya ya aghọwo isi ihe na-eme ka ọ pụta ìhè - ọdịdị a na-ezo aka n'ụdị ahụ. Ọmụmụ ihe na akwụkwọ akụkọ "Open Ceramics" na 2024 tụnyere arụmọrụ nke alumina ntụ ntụ na-adịghị agbanwe agbanwe na ntinye ntinye (CF³) 5:
Spherical ntụ ntụ: na-asọ dị ka ezigbo ájá, ọnụ ọgụgụ ndochi karịrị 60%, na mbipụta ahụ dị ire ụtọ na silky.
ntụ ntụ na-adịghị mma: rapaara dị ka shuga na-enweghị isi, viscosity dị elu ugboro 40, a na-egbochikwa nozzle ka ọ nwee obi abụọ banyere ndụ.
Ọbụna nke ka mma, njupụta nke akụkụ ndị a na-ebipụta site na ntụ ntụ ntụ ntụ na-adị mfe karịa 89% mgbe e mesịrị, na njedebe elu na-ezute ọkọlọtọ. "Ònye ka na-eji ntụ ntụ" jọrọ njọ ugbu a? Fluidity bụ ọgụ irè!" Otu onye ọrụ nka mụmụrụ ọnụ ọchị ma kwubie5.
Ọdịnihu: Kpakpando na oke osimiri na-ebikọ ọnụ na obere ma mara mma
Mgbanwe mbipụta 3D nke ntụ ntụ alumina adịchaghị anya. Ụlọ ọrụ ndị agha ebutewo ụzọ n'itinye cores shrinkage nso-efu iji rụpụta agụba turbofan; ubi biomedical ewerela ọmarịcha ihe n'ike ya wee malite ibipụta ọkpụkpụ ahaziri ahazi; ụlọ ọrụ eletrọnịkị ezubere iche maka ihe ndị na-ekpo ọkụ ọkụ - ka emechara, ihe na-eme ka ọkụ na ọkụ eletrik nke alumina enweghị ike dochie ya.