Sintered silicon carbide ndi chinthu chofunikira kwambiri cha ceramic, chomwe chimagwiritsidwa ntchito kwambiri kutentha kwambiri, kuthamanga kwambiri komanso minda yamphamvu kwambiri. Reactive sintering wa SIC ndi sitepe yofunika kwambiri pokonzekera sintered SIC zipangizo. Kuwongolera koyenera kwa sintering SIC reaction kungatithandize kuwongolera momwe zinthu zilili komanso kukonza zinthu. Njira yabwino yoyendetsera sintered silicon carbide reaction yafotokozedwa mu pepalali.
1. Kukhathamiritsa kwa anachita sintering SIC zinthu
Zomwe zimachitika ndizofunika kwambiri za sintered silicon carbide reaction, kuphatikizapo kutentha kwazomwe zimachitika, kuthamanga kwazomwe zimachitika, chiŵerengero cha reactant misa ndi nthawi yochitira. Pamene optimizing zinthu anachita, m`pofunika kusintha malinga ndi zofunikira ntchito ndi zimagwirira ntchito.
(1) Kutentha kochita: Kutentha kochita ndi chimodzi mwazinthu zazikulu zomwe zimakhudza liwiro la zomwe zimachitika komanso mtundu wazinthu. Mu osiyanasiyana, ndi apamwamba anachita kutentha, mofulumira anachita liwiro, ndi apamwamba mankhwala khalidwe. Komabe, kutentha kwambiri kumapangitsa kuti pores achuluke komanso ming'alu ya chinthucho, zomwe zimakhudza mtundu wa chinthucho.
(2) Kukakamizidwa kuchitapo kanthu: Kukakamizidwa kuchitapo kanthu kumakhudzanso liwiro la zomwe zimachitika komanso kachulukidwe wazinthu. Mu osiyanasiyana osiyanasiyana, ndi apamwamba anachita kuthamanga, mofulumira anachita liwiro ndi apamwamba mankhwala kachulukidwe. Komabe, kupanikizika kwambiri kungayambitsenso pores ndi ming'alu ya mankhwala.
(3) reactant misa chiŵerengero: reactant misa chiŵerengero ndi chinthu china chofunika zimakhudza anachita liwiro ndi mankhwala khalidwe. Pamene chiŵerengero cha kaboni ndi silicon misa chili choyenera, mlingo wa zochita ndi misa ya mankhwala. Ngati reactant misa chiŵerengero si koyenera, izo zimakhudza mmene mlingo ndi mankhwala misa.
(4) Nthawi yochitirapo kanthu: Nthawi yochitira ndi chimodzi mwazinthu zomwe zimakhudza liwiro komanso mtundu wazinthu. M'kati mwazosiyanasiyana, nthawi yotalikirapo, imachedwetsa liwiro la zomwe zimachitika komanso mtundu wamankhwala. Komabe, nthawi yayitali kwambiri yochitapo kanthu imabweretsa kuwonjezeka kwa pores ndi ming'alu ya chinthucho, zomwe zimakhudza mtundu wa chinthucho.
2. Njira kulamulira zotakasika sintering pakachitsulo carbide
M`kati sintering SIC anachita, m`pofunika kulamulira anachita ndondomeko. Cholinga cha ulamuliro ndi kuonetsetsa bata la anachita ndi kugwirizana kwa mankhwala khalidwe. Kuwongolera machitidwe kumaphatikizapo kuwongolera kutentha, kuwongolera kuthamanga, kuwongolera mlengalenga ndi kuwongolera kwamtundu wa reactant.
(1) Kuwongolera kutentha: Kuwongolera kutentha ndi chimodzi mwazinthu zofunika kwambiri pakuwongolera njira. Kutentha kuwongolera Zomwe kutentha kumayenera kuyang'aniridwa ndendende momwe zingathere kuti zitsimikizire kukhazikika kwa zomwe zimachitika komanso khalidwe logwirizana la mankhwala. Pakupanga kwamakono, makina owongolera makompyuta nthawi zambiri amagwiritsidwa ntchito kuwongolera molondola momwe kutentha kumachitikira.
(2) Kuwongolera kukakamiza: Kuwongolera kukakamiza ndi gawo lina lofunikira pakuwongolera njira. Ndi kulamulira zochita kuthamanga, kukhazikika kwa ndondomeko anachita ndi kugwirizana kwa khalidwe mankhwala akhoza kuonetsetsa. Pakupanga kwamakono, makina owongolera makompyuta nthawi zambiri amagwiritsidwa ntchito kuwongolera molondola zomwe zimachitika.
(3) Atmosphere control: Atmosphere control imatanthawuza kugwiritsa ntchito mlengalenga (monga mpweya wa inert) munjira yowongolera zomwe zikuchitika. Ndi kulamulira mlengalenga, kukhazikika kwa njira zomwe zimachitikira komanso kusasinthasintha kwa khalidwe la mankhwala kungatsimikizidwe. Pakupanga kwamakono, makina owongolera makompyuta amagwiritsidwa ntchito kuwongolera mlengalenga.
(4) Reactant khalidwe kulamulira: Reactant khalidwe kulamulira ndi chimodzi mwa zinthu zofunika kuonetsetsa bata la zochita ndondomeko ndi kugwirizana kwa khalidwe mankhwala. Poyang'anira khalidwe la reactants, kukhazikika kwa machitidwe ndi kusasinthasintha kwa khalidwe la mankhwala kungatsimikizidwe. Pakupanga kwamakono, makina owongolera makompyuta nthawi zambiri amagwiritsidwa ntchito kuwongolera mtundu wa reactants.
Kuwongolera koyenera kwa reactive sintering SIC ndi gawo lofunikira pokonzekera zida zapamwamba za sintered SIC. Ndi kukhathamiritsa zinthu anachita, kulamulira anachita ndondomeko ndi kuwunika anachita zinthu, bata la zochita ndondomeko ndi kusasinthasintha mankhwala khalidwe akhoza kuonetsetsa. Pogwiritsa ntchito, machitidwe a sintered silicon carbide akuyenera kusinthidwa malinga ndi zochitika zenizeni zogwiritsira ntchito kuti akwaniritse zofunikira zosiyanasiyana zogwiritsira ntchito.
Nthawi yotumiza: Jun-05-2023