1. Lipatlisiso tsa Saense ea Lintho tse bonahalang le Botšepehi ba Sebopeho
1.1 Crystal Chemistry le Litšobotsi tsa Bonding
(Lithako tsa Silicon Carbide)
Silicon carbide (SiC) is a covalent ceramic made up of silicon and carbon atoms set up in a tetrahedral latticework, primarily in hexagonal (4H, 6H) or cubic (3C) polytypes, each showing phenomenal atomic bond toughness.
The Si– C tlamo, with a bond energy of around 318 kJ/mol, is amongst the greatest in architectural porcelains, giving exceptional thermal security, firmness, and resistance to chemical assault.
This robust covalent network results in a material with a melting point going beyond 2700 °C(sublimes), making it one of the most refractory non-oxide ceramics readily available for high-temperature applications.
Ho fapana le li-porcelain tsa oxide tse kang alumina, SiC keeps mechanical strength and creep resistance at temperatures over 1400 °C, where many metals and conventional ceramics begin to soften or deteriorate.
Its reduced coefficient of thermal growth (~ 4.0 × 10 ⁻⁶/ K) integrated with high thermal conductivity (80– 120 W/(m · K)) e thusa ho palama baesekele ka potlako ntle le ho arohana ho senya, tšobotsi ea bohlokoa bakeng sa ts'ebetso ea crucible.
Meaho ena ea tlhaho e tsoa ho matla a motlakase a leka-lekaneng le boholo bo tšoanang ba athomo ea silicon le carbon., e khothalletsang sebopeho sa kristale se tsitsitseng haholo le se tletseng haholo.
1.2 Microstructure le Mechanical Resilience
Li-crucible tsa Silicon carbide hangata li entsoe ka li-powders tsa SiC tse sintered kapa tse nang le karabelo., ka microstructure e bapalang mosebetsi o tiileng oa ho tšoarella le ho hanyetsa mocheso oa mocheso.
Li-crucibles tsa Sintered SiC li entsoe ka sintering ea boemo bo tiileng kapa ea mokelikeli maemong a mocheso ka holimo. 2000 °C, hangata ka li-additives tsa boron kapa tsa carbon ho matlafatsa tšubuhlellano le momahano oa moeli oa lijo-thollo.
Tshebetso ena e etsa hore ho be thata ka ho feletseng, moralo o motle o nang le porosity e fokolang (
Advanced Ceramics e thehiloe ka Mphalane 17, 2012, ke khoebo ea theknoloji e phahameng e ikemiselitseng ho etsa lipatlisiso le nts'etsopele, tlhahiso, ho sebetsa, thekiso le lits'ebeletso tsa tekheniki tsa lisebelisoa le lihlahisoa tse amanang le ceramic. Lihlahisoa tsa rona li kenyelletsa empa ha li felle feela ho Lihlahisoa tsa Ceramic tsa Boron Carbide, Lihlahisoa tsa Ceramic tsa Boron Nitride, Silicon Carbide Lihlahisoa tsa Ceramic, Silicon Nitride Lihlahisoa tsa Ceramic, Lihlahisoa tsa Ceramic tsa Zirconium Dioxide, etc. Haeba u thahasella, ka kopo ikutloe u lokolohile ho ikopanya le rona.
Li-tag: Lithako tsa Silicon Carbide, Silicon Carbide Ceramic, Silicon Carbide Ceramic Crucibles
Lingoliloeng tsohle le litšoantšo li tsoa Marang-rang. Haeba ho na le litaba tsa copyright, ka kopo ikopanye le rona ka nako ho hlakola.
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