Iingubo ze-firamic fibers zezinto ezidumileyo ze-inshonter ezithandwayo ezaziwa ngokuba ziipropathi zabo ezikhethekileyo. Basetyenziswa ngokubanzi kumashishini ahlukeneyo, kubandakanya i-aerospace, isizukulwana ngamandla kunye nemveliso, ngenxa yezakhono zabo eziphezulu. Enye yezinto ezibalulekileyo ezinegalelo ekusebenzeni kwabo kukuphazamiseka kwabo okuphantsi kwengqondo.
Ukuqhubela phambili kwe-thermal ngumlinganiso wezinto zokwenza izinto zokuqhuba ubushushu. Ingathi ubungakanani bobushushu obuhamba ngendawo yeyunithi yempahla kwiyunithi yexesha ngalinye umahluko kumalungu asezantsi. Ngemigaqo elula, ukuqokelelwa kwe-thermal kumisela ukuba impahla iqulathe indlela anokudlulisela ngayo amandla ashushu.
Iingubo ze-firamic firnet zinokuphumelela kakhulu kwe-subrmal ephantsi kakhulu, ezinqwenelekayo zokuncedisa izicelo. Ukuqhubela phambili kwe-thermal ophantsi kwezi zingubo ngokuyintloko kucacisiwe kukwenziwa kobume be-ceramic.
Iintsinga ze-ceramic zenziwa ngokudityaniswa kwezixhobo ze-Alweumina kunye nezixhobo ze-silica, eziye zaphulukana nengqondo. Ezi fibers zicekeceke kwaye zilula, zinomlinganiselo ophezulu, ezithetha ubude bazo zikhulu kakhulu kune-diameti yazo. Eli lwakhiwo livumela umoya oninzi kunye ne-voids ngaphakathi kwengubo, eyenza njengezithintelo ze-thermal kwaye ithintele ukudluliselwa kobushushu.
Ukuqhubela kwengqondo ye-firaramic firracy kungahluka ngokuxhomekeka kuhlobo oluthile kunye nokuqulunqwa kwengubo, kunye noxinano lwalo. Ngokubanzi, ukuqhubela phambili kwe-ceramic fiber fibers ranges ukusuka kwi-0.035 ukuya kwi-0.08 w / m·K. Olu luhlu lubonisa ukuba iingubo ze-fiber ze-fiber zineempawu ezibalaseleyo zokuvala, njengoko zisezantsi zokuphumeza xa kuthelekiswa nezinye izinto eziqhelekileyo kwi-fiberglass okanye uboya belitye.
Ukusebenza okuphantsi kweIingubo ze-firamic fiberinikezela ngezibonelelo ezininzi kwizicelo. Okokuqala, kuyanceda ukunciphisa ilahleko yobushushu okanye inzuzo, ukuqinisekisa ukusebenza kakuhle kwamandla kwiinkqubo zeshishini nakwizakhiwo. Ngokuthintela ukudluliselwa kobushushu, ii-fiber ze-fiber zefayibha zinceda ukugcina imeko-bume engqongileyo inciphisa amandla afunekayo kumshushu okanye ukupholisa indawo.
Ukongeza, ukuqhubela kwe-thermal ophantsi kweengubo ze-ceramic amanegalelo kukuchasa kwabo ngokugqwesileyo kumaqondo obushushu aphezulu. Ezi mpahla zinokumelana nobushushu ukuya kuthi ga kwi-2300°F (1260°C) Ngelixa ugcina ingqibelelo yabo kunye nokuthambisa iipropathi. Oku kwenza ukuba izicelo zibandakanya iindawo eziphezulu zobushushu, ezinjengeziko lemikhumo okanye i-kiln.
IXESHA LOKUQALA: I-DEC-06-2023
