Sababtoo ah sifooyinkeeda jireed ee wanaagsan, carbide silicon-sintered-reaction-ka ayaa si weyn loogu isticmaalay walxo kiimiko ah oo muhiim ah. Baaxadda codsigeeda waxay leedahay saddex dhinac: soo saarista walxaha kululaynta iska caabbinta; Waxaa loo isticmaalaa in lagu soo saaro qaybaha kululaynta iska caabbinta - usha silicon molybdenum, tuubada kaarboon silicon, iwm.; Soo saarista alaabada iska caabbinta. Iyada oo ah walax gaar ah oo iska caabbinta, waxaa loo isticmaalaa dhalaalinta birta iyo birta sida foornada qaraxa birta, cupola iyo habka kale ee shaambadaynta, daxalka, dhaawaca booska adag ee alaabada dabka u adkaysata; Birta naadirka ah (zinc, aluminium, naxaas) dhalaaliyeyaasha loogu talagalay dallacaadda foornada dhalaalaysa, tuubada gudbiyaha birta dhalaalaysa, qalabka shaandhada, dheriga isku xidhka, iwm.; Iyo tignoolajiyada hawada sare sida afka dabada matoorka shaambadaynta, daab turbine gaas dabiici ah oo heerkul sare leh oo joogto ah; Warshadaha silicate, kuwo badan oo ah noocyo kala duwan oo ah meel lagu shido foornada warshadaha, dallacaadda foornada iska caabbinta nooca sanduuqa, saggar; Warshadaha kiimikada, waxaa loo isticmaalaa sida soo saarista gaaska, carburetor saliidda cayriin, foornada desulfurization gaaska qiiqa iyo wixii la mid ah.
Isticmaalka saafiga ah ee alaabada wax soo saarka α-SiC, sababtoo ah xooggeeda weyn, aad bay u adag tahay in lagu shiido budada nanoscale ee aadka loo qurxiyey, walxahaasina waa saxanno ama fiilooyin, oo loo isticmaalo in lagu shiido isku-dhafka, xitaa marka la kululeynayo heerkulka kala-baxa ee ku wareegsan, ma soo saari doonaan laablaab aad u cad, lama sifeyn karo, heerka cufnaanta alaabta waa hooseeyaa, iska caabinta oksaydhkuna waa liidataa. Sidaa darteed, wax soo saarka warshadaha ee alaabada, xaddi yar oo ah budada ultrafine ee wareegsan ee β-SiC ayaa lagu daraa α-SiC iyo xulashada waxyaabaha lagu daro si loo helo alaabada cufnaanta sare leh. Iyada oo ah wax lagu daro isku xidhka badeecada, iyadoo loo eegayo nooca waxaa loo qaybin karaa oksaydhyada birta, isku-dhafka nitrogen, graphite saafiga sare leh, sida dhoobada, aluminium oksaydh, zircon, zirconium corundum, budada lime, galaas la dahaadhay, silicon nitride, silicon oxynitride, graphite saafiga sare leh iwm. Xalka biyaha ee koolada sameysanaysa wuxuu noqon karaa mid ama in ka badan oo ah hydroxymethylcellulose, acrylic emulsion, lignocellulose, istaarijka tapioca, xalka aluminium oxide colloidal, xalka silicon dioxide colloidal, iwm. Sida ku xusan nooca waxyaabaha lagu daro iyo farqiga u dhexeeya xaddiga lagu daro, heerkulka dabka ee isku-dhafka ah isku mid ma aha, heerkulkuna waa 1400 ~ 2300℃. Tusaale ahaan, α-SiC70% oo leh qaybinta cabbirka walxaha ka badan 44μm, β-SiC20% oo leh qaybinta cabbirka walxaha ka yar 10μm, dhoobo 10%, oo lagu daray 4.5% xalka lignocellulosic 8%, si siman loogu qasay, oo lagu sameeyay cadaadis shaqo oo 50MPa ah, oo hawada lagu riday 1400℃ muddo 4 saacadood ah. Cufnaanta muuqata ee badeecaddu waa 2.53g/cm3, daloolka muuqda waa 12.3%, xoogga jiidistana waa 30-33mpa. Sifooyinka kala duwan ee lagu sifeeyo noocyada kala duwan ee badeecooyinka leh waxyaabo lagu daro ayaa lagu taxay Jadwalka 2.
Guud ahaan, qalabka dib-u-habaynta ee silicon carbide-ka ee falcelinta ku shaqeeya waxay leeyihiin sifooyin tayo sare leh dhinacyo kasta, sida xoog cadaadis xooggan, iska caabin shoog kuleyl oo xooggan, iska caabin xirasho oo wanaagsan, hab-dhaqan kuleyl oo xooggan iyo iska caabin daxalka dareeraha ah oo heerkul ballaaran leh. Si kastaba ha ahaatee, waa in sidoo kale la arkaa in faa'iido darrooyinkeedu ay tahay in saameynta antioxidant-ku ay liidato, taasoo keenta ballaarinta mugga iyo isbeddelka jawiga heerkulka sare si loo yareeyo cimriga adeegga. Si loo hubiyo iska caabinta oksaydhka ee qalabka dib-u-habaynta ee silicon carbide-ka ee falcelinta ku shaqeeya, shaqo badan oo xulasho ah ayaa laga qabtay lakabka isku xidhka. Codsiga isku-darka dhoobada (oo ay ku jiraan oksaydhyada birta ah), laakiin ma bixin saameyn kayd ah, walxaha carbide-ka ee silicon wali waxay ku xiran yihiin oksaydheynta hawada iyo daxalka.
Waqtiga boostada: Juun-21-2023