Ọdịnaya dị elu na mmeghachi omume jikọtara SiC

Mmeghachi omume Bonded SiC (RBSC) bụ ihe na-adịgide adịgide nke ukwuu ejiri n'ọtụtụ ngwa n'ihi nkwụsi ike ya dị elu na nkwụsi ike ọkụ. Gụkwuo banyere ya ebe a!

Mmepụta njikọta mmeghachi omume na-amalite site na ịgwakọta ihe ndị mejupụtara SiC na carbon. Ozugbo e guzobere, a na-acha akwụkwọ ndụ akwụkwọ ndụ ahụ na-enweta machining green maka nkenke na imecha elu.

Yi nguzogide

Silicon carbide pụtara dị ka otu n'ime ndị na-eme ihe kachasị elu mgbe ọ na-abịa iyi nguzogide, ekele a pụrụ ịdabere na n'ichepụta usoro na-arụpụta siri ike, mkpuchi mkpuchi na-adịgide adịgide nke gosipụtara uru ha na gburugburu ụlọ ọrụ mmepụta ihe na-achọsi ike.

Ngwakọta igwe anaghị agba nchara na-arụ ọrụ (RBSC), emepụtara site na usoro njikọta mmeghachi omume ọhụrụ nke na-abanye silicon a wụrụ awụ na-abanye n'ime preform carbon., na-enye RBSC aka ịnọgide na-enwe ọdịdị ya na okpomọkụ dị elu ka ọ ka na-ada ụda nke ọma ma na-eguzogide ọgwụ corrosion acid.. Ozoro, Ọnụego mgbasawanye ọkụ ya dị oke ala yana nguzogide corrosion egosiwokwa.

A maara SiC n'ọtụtụ ebe maka isi ike ya, iguzogide iyi, okpomọkụ na kemịkalụ mbuze dị ka ihe eji eme ihe maka igwe akàrà na ihe mgbapụta dị elu na-arụ ọrụ. Dabere na ọkwa ya, SiC na-etukwa isi ike mgbanwe dị mma na ọnọdụ okpomọkụ dị elu yana ezigbo ike tensile – àgwà ndị na-eme ka ọ dị mma maka ngwa ebe vibration na ujo nwere ike ime.

Nguzogide okpomọkụ

Mgbochi dị elu nke RBSC na-eme ka ọ bụrụ onye ndu na-achọ ngwa ụlọ ọrụ mmepụta ihe, na-ekpochapụ okpomọkụ nke ọma iji kwe ka o jiri ya mee ihe na gburugburu ebe ọkụ na-enweghị oge nkwụsịtụ na ihe ndozi ọzọ.

Mmeghachi omume nke dilicon Carbide (RBSC) A na-emepụta ya site na ịbanye kọmpat ndị mejupụtara ngwakọta nke SiC na carbon na silicon mmiri mmiri, Site na mmeghachi omume ya na carbon na-arụpụta silicon ọzọ nke na-ejikọta ụmụ irighiri SiC mbụ ọnụ – N'adịghị ka sintered SiC nke a na-emepụta site na usoro nhazi seramiiki na-emekarị site na iji ihe enyemaka na-abụghị oxide..

Nnyocha Song na-egosi na impregnation mejupụtara precursor na-abawanye ọdịnaya SiC site na ịchịkwa mmeghachi omume n'etiti silicon mmiri mmiri na carbon amorphous., na-ewepụ ihe nhụsianya pore-clogging, ma na-emepụta oke RB-SiC na modul na ike dị elu – na-ewepụta nnukwu RBSC na ngwakọta pụrụ iche nke ike nhazi, ọgwụ mgbochi, okpomọkụ ndidi na eyi iguzogide – na-eme RBSC ihe nke echi. Ozoro, Nke a refractory ihe na-anya isi na-enweghị atụ anwụ ngwa ngwa na elu eyi ebe yana elu mbuze eguzogide na thermal ujo kwụsie ike. – na-eme RBSC ihe nke echi.

Chemicalment

Reaction Bonded SiC bụ ihe seramiiki siri ike ma na-agbanwe agbanwe, mara maka ịbụ kemịkalụ inert na-eguzogide oxidation na corrosion. Nwere ike iguzogide oke okpomọkụ ka ọ ka na-adị ike, Reaction Bonded SiC na-eme maka akụrụngwa dị mma na ntọala ụlọ ọrụ dị ka nfuli, nozzle, biarin, chokes ịchịkwa eruba na ihe ndị ọzọ.

Imepụta RB SiC gụnyere ịgbanye silicon mmiri mmiri n'ime ihe ikuku carbon juru n'ọnụ n'ụdị ikpeazụ ya site na iji mgbaze mgbaze. (RMI). Usoro a na-eme ka ikuku carbon dị ntakịrị na-egbochi pores, ma na-enye ohere ka silicon a wụrụ awụ meghachi omume na carbon iji mepụta silicon carbide [1, 2].

silicon carbide na-emeghachi omume na-enye conductivity okpomọkụ pụrụ iche, ọnụ ọgụgụ dị ala nke mgbasawanye, na iguzogide ujo thermal, oxidation na corrosion; na-eme ka ọ bụrụ nhọrọ magburu onwe ya maka ngwá ọrụ nhazi nke semiconductor dị ka shelf kiln na ngwá ụlọ ma ọ bụ crucibles. Ozoro, Ngwongwo ya dị fechaa na ike ya na-eme ka ọ baa uru na ngwa agha ma ọ bụ ikuku ikuku dị ka efere agha ma ọ bụ roket nozzles..

Nguzogide okpomọkụ nke okpomọkụ

Enwere ike tụọ nkwụsi ike na-ekpo ọkụ nke ihe site na ike ha ịtachi obi n'okpuru mgbanwe okpomọkụ ngwa ngwa, dabere na nhazi ha, Njirimara na gburugburu ebe obibi. Nchegbu dị otú ahụ nwere ike ịkpata mgbawa, nrụrụ ma ọ bụ mgbaji n'ime ihe owuwu ha, Njirimara ma ọ bụ gburugburu – na-ebute nsogbu ndị nwere ike ịgbawa dịka ọmụmaatụ.

Reaction Bonded Silicon Carbide na-egosipụta usoro lattice dị mgbagwoju anya nke agbụ n'etiti carbon na silicon atom nke na-enye ya ike ọrụ dị egwu., elu thermal conductivity na obere njupụta – àgwà ndị na-atụnye ụtụ na nkwụsi ike ọkụ ọkụ ya pụtara ìhè.

Mgbochi ujo okpomọkụ nke ihe na-adabere n'ọtụtụ ihe, gụnyere ọnụego mmalite mgbape mbụ yana ọsọ mgbasa, ogologo mgbawa na ọnọdụ mmalite ya. Ihe RBSC nwere ikike ịkwado oke nrụgide mgbawa ka ọ na-eguzogide usoro mmebi dị iche iche – site na matrix cracks na-etolite n'ime pores n'etiti eriri eriri ruo na mgbawa radial n'akụkụ mgbidi pore – na-enweghị nhụjuanya dị ịrịba ama mmebi ma ọ bụ mgbape e guzobere.