Nhazi Al2O3 site na 5% ruo 10% (oke nkebi) n'ime akụkụ matrix nke brik carbon/graphite nke na-agba ọkụ (blọk carbon) na-eme ka iguzogide nchara nke ígwè gbazere agbaze ka mma nke ukwuu, ọ bụkwa itinye brik carbon aluminum n'ọrụ na sistemụ ígwè. Nke abụọ, a na-ejikwa brik carbon aluminum eme ihe na nhazi ígwè agbazere agbaze na ebe a na-etinye ọkpọkọ.
Brịk carbon aluminom maka ọgwụgwọ ígwè a gbazere agbaze
A na-ejikarị brik silicon carbide nke aluminom eme ihe n'ihe eji ebufe ígwè agbaze agbaze dịka tankị ígwè agbaze agbaze. Agbanyeghị, mgbe ejiri ụdị ihe a na-anaghị emegharị ahụ na tankị ígwè agbaze agbaze na igwe ngwakọta ígwè buru ibu, ma na-ezute ọnọdụ okpomọkụ na oyi siri ike, ọ na-enwekarị mgbawa, na-eduga na mkpụcha. Na mgbakwunye, n'ihi na brik Al2O3-SiC-C eji na tankị ígwè ọkụ na igwe ngwakọta ígwè na-enwekarị ọdịnaya carbon nke 15% na ike okpomọkụ dị elu dị ka 17~21W/(m·K) (800℃), enwere mbelata okpomọkụ nke ígwè agbaze agbaze na nsogbu nke ịgbanwe mpempe ígwè nke tankị ígwè buru ibu na ụgbọ ala ịgwakọta. Ihe mgbochi bụ iji nweta obere ike okpomọkụ site na iwepụ SiC, ihe na-eduzi okpomọkụ nke ukwuu, ebe ọ na-ebelata ọdịnaya graphite ma na-eme ka graphite dị ọcha.
Site na nchọpụta bụ isi, a kwubiri na:
(1) Mgbe ọdịnaya graphite (oke oke) dị na brik carbon aluminom erughị 10%, nhazi nhazi ya nwere Al2O3 na-emepụta matrix na-aga n'ihu, a na-ejupụtakwa carbon na matrix ahụ n'ụdị isi kpakpando. N'oge a, enwere ike ịgbakọ ihe dịka usoro (1) na-agbakọ ike okpomọkụ nke brik carbon aluminom λ.
N'ime usoro a, λa bụ ike okpomọkụ nke Al2O3; Vc bụ oke olu nke graphite. Nke a na-egosi na ike okpomọkụ nke brik carbon aluminom enweghị ihe jikọrọ ya na ike okpomọkụ nke graphite.
(2) Mgbe a na-eme ka graphite ahụ dị ọcha, ike okpomọkụ nke brik carbon aluminom anaghị adabere na ihe ndị mejupụtara graphite.
(3) Maka brik aluminom-carbon nke na-enweghị carbon, mgbe a na-eme ka graphite dị ọcha, enwere ike ịmepụta matrix njikọ dị arọ, nke nwere ike ime ka iguzogide nchara nke brik aluminom-carbon dịkwuo mma.
Nke a na-egosi na brik carbon aluminom dị ala nwere ike ịgbanwe ọnọdụ ọrụ nke nnukwu tankị ígwè na-ekpo ọkụ na ụgbọala ngwakọta ígwè na sistemụ ígwè.
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Oge ozi: Febụwarị-27-2024
