Kodi ufa wobiriwira wa silicon carbide umathandiza bwanji kuti zipangizo zokutira zigwire bwino ntchito?
Mphepo yamphamvu inadutsa mmwamba mamita mazana ambiri. Old Li anamanga chingwe chake chachitetezo mwaluso ndikuyamba kuyang'ana tsamba lalikulu la turbine ya mphepo lomwe linali patsogolo pake. Zala zake zokwawa zinalemba zizindikiro zazing'ono koma zosasangalatsa zomwe zinali m'mphepete mwa tsambalo—malo omwe ali pachiwopsezo chachikulu cha mphepo ndi mchenga. Anakwinya nkhope, podziwa kuti posachedwa tsambalo liyenera kuchepetsedwa kuti likonzedwe. Chophimba chapadera pamwamba pa tsambalo ndiye mzere wake woyamba wodzitetezera ku mphepo ndi kukokoloka kwa mchenga. Ndipo mkati mwa chitetezochi muli "fupa lolimba" lofunika kwambiri—ufa wobiriwira wa silicon carbide micropowder.
“Mchenga wobiriwira wobiriwira uwu ungawoneke ngati wosafunika, koma popanda iwo, utoto wathu wa tsamba ukanakhala ngati pepala!” Old Li nthawi zambiri ankanena kwa akatswiri atsopano. M'dziko lonse la zipangizo zokutira, utoto wobiriwira wa silicon carbide umagwira ntchito yofunika kwambiri. Sikuti ndi “msana” wa utoto wokha; komanso ndi chida chogwiritsidwa ntchito mosiyanasiyana chomwe chimawonjezera magwiridwe ake onse.
"Mafupa Olimba" Amachirikiza "Chishango cha Daimondi"
Carbide wobiriwira wa siliconUfa wa micropowder, mwachidule, ndi silicon carbide (SiC) yosalala kwambiri yomwe imaphwanyidwa bwino kukhala ufa wofanana ndi micron. Chinthu chake chodziwika bwino ndi kuuma kwake! Kuuma kwake kwa Mohs kumafika 9.5, kuposa diamondi ndi cubic boron nitride yokha, komanso kolimba kwambiri kuposa chitsulo wamba. Kuiyika mu zokutira zosiyanasiyana zosatha kutha kuli ngati kuwonjezera tinthu tating'onoting'ono ta diamondi ku matope ofewa.
Tangoganizirani malo ophikira omwe akhudzidwa ndi mchenga wothamanga kwambiri, zinyalala zachitsulo, kapena madzi owononga. Ngati chophimbacho chinali utomoni wofewa kapena chitsulo, chikanatha kuphwanyika ndikuwonongeka pakangopita masekondi ochepa. Komabe, ndi utomoni wobiriwira wa silicon carbide womwe umafalikira mofanana mkati mwa matrix ophikira, tinthu tolimba timeneti timagwira ntchito ngati "zishango" zazing'ono zambiri komanso "malinga." Zimayamwa ndikufalitsa mphamvu ya kugunda, zomwe zimachepetsa kwambiri kuwonongeka ndi kutayika kwa zinthu zophikira zokha. Utomoni wobiriwira wa silicon carbide, chophimba cholimba komanso cholimba, chimagwiritsidwa ntchito pamakoma amkati mwa mapaipi amigodi, mano a zidebe zofukula, ndi zigawo zazikulu zobowolera mafuta. "Kulimba" kumeneku kumawonjezera moyo wa ntchito ya zophikira mwachangu, kuchepetsa kwambiri kuchuluka ndi mtengo wokonza ndi kusintha.
"Chitsulo Cholimbikitsidwa" Chimalimbitsa Thupi
Ufa wobiriwira wa silicon carbide umachita zambiri kuposa kungopereka mphamvu zokha, komanso umalimbitsa zokutira.Zipangizo zokutira, makamaka zopangidwa ndi polima monga epoxy ndi polyurethane, nthawi zambiri zimakhala ndi mphamvu zochepa, kulimba, komanso kukana kutentha. Ufa wobiriwira wa silicon carbide umagwira ntchito ngati maukonde achitsulo owonjezeredwa ku konkire, zomwe zimapangitsa kuti utotowo ukhale wabwino kwambiri.
1. Mphamvu ndi Modulus: Tinthu tating'onoting'ono ta silicon carbide tolimba tomwe timalumikizana mwamphamvu ndi matrix yophimba, kusuntha bwino ndikutulutsa katundu. Pamene chophimbacho chikukhudzidwa kapena kupindika, tinthu tating'onoting'ono timeneti timaletsa ming'alu kuti isafalikire mosavuta, zomwe zimapangitsa kuti chophimbacho chikhale ndi mphamvu yokhudza kukhudza, mphamvu yopindika, komanso kuuma kwa elasticity (modulus). Zili ngati kuwonjezera miyala ku dothi lofewa—mwachibadwa zimapangitsa msewu kukhala wolimba komanso wotetezeka ku kukakamizidwa.
2. Kukhazikika kwa Miyeso ndi Kukana Kutentha:Kabide wobiriwira wa silicon (GSIC)Ili ndi mphamvu yochepa yokulitsa kutentha komanso kukhazikika kwabwino kwa kutentha (imatha kupirira kutentha kopitilira madigiri 1,000 Celsius popanda kuwola). Ikawonjezeredwa ku zokutira, imaletsa kusintha kwa kutentha, ming'alu, komanso kusweka komwe kumachitika chifukwa cha kufalikira kosasinthasintha komanso kupindika m'malo otentha ndi ozizira. Izi ndizofunikira kwambiri pazophimba zomwe zimagwira ntchito kutentha kwambiri kapena kufunikira kukonzedwa kwa kutentha kwambiri. Imaonetsetsa kuti chophimbacho chimakhala chokhazikika ndipo chimakana kusintha kutentha kukasinthasintha.
Kulinganiza pang'ono pakati pa "chitetezo cha kutentha" ndi "network yoyendetsera kutentha"
Mphamvu ya kutentha kwa ufa wobiriwira wa GSIC yafufuzidwanso mumakampani opanga utoto, ndipo chofunikira kwambiri ndi zofunikira pakugwiritsa ntchito.
Chotetezera Kutentha: Tangoganizirani khoma la ng'anjo kapena gawo la injini lomwe likufunika kupirira kutentha kwambiri.GSICUfa waung'ono umafalikira mofanana mu utoto wothira kutentha (monga utoto wothira ceramic kapena wapadera wothira utomoni), pomwe ufawo umapereka mphamvu yabwino yotenthetsera, umawonjezeranso kukhuthala kwa njira yoyendera kutentha mkati mwa utotowo. Umagwiriranso ntchito mogwirizana ndi ma pores kuti uteteze kutentha kuti kusalowe mwachangu mu utotowo. Izi zili ngati kumanga makoma ozungulira okhala ndi njerwa zazing'ono zambiri zothira kutentha (tinthu tating'onoting'ono ta silicon carbide) ndi mpweya pakati pa ng'anjo ndi dziko lakunja, zomwe zimapangitsa kuti utotowo ukhale wothira kutentha kwambiri.
Kutenthetsa Kwambiri Kutentha: Mosiyana ndi zimenezi, pa zokutira zamagetsi kapena zokutira zina zopangidwa ndi zitsulo zomwe sizimawonongeka zomwe zimafuna kutentha mwachangu, ufa wobiriwira wa silicon carbide umakhala "katswiri woyendetsa kutentha." Kutenthetsa kwake kumakhala kokwera kwambiri kuposa kwa ma polima ambiri ndi zitsulo. Ikapanga netiweki yothandiza kutentha mkati mwa zokutira, imagwira ntchito ngati "misewu ikuluikulu" yambiri, yomwe imayendetsa kutentha kwamkati mwachangu pamwamba pa zokutira ndikuziwononga, kuteteza kutenthedwa ndi kulephera kwa chipangizocho. Zili ngati kugwiritsa ntchito "phala lotenthetsa" lophatikizidwa ndi tinthu tating'onoting'ono toyendetsa kutentha kwambiri pamwamba pa chip yotentha.