Ngongo Tiaki RSiC
Ngā Mōhiohio Hua
Ngā ngongo tiaki karawiti siliconhe wāhanga ngongo motuhake i hangaia ki te rauemi uku silicon carbide (SiC), e whakamahia ana hei tiaki i ngā huānga tairongo (pēnei i ngā thermocouples) hei wāhanga matua rānei i roto i ngā taputapu kawe wai pāmahana teitei me te whakawhiti wera.
E toru ngā tukanga matua e hangaia ai ā mātou hua:Te whakapūtanga tauhohenga (RBSiC), Te whakapūtanga anō (RSiC), Te karāhe karāhe karāhe kapiti honohono ki te hākawa nitride (NSiC)
1. Ngā ngongo tiaki RSiC
Mā te whakamahi i te paura moroiti SiC tino parakore hei rauemi mata, ka whakakorikoria ki ngā pāmahana teitei (2000–2200℃). Ka hangaia he hanganga matotoru mā te whakakōhatu anō me te hanumi rohe kōpaka o ngā matūriki SiC, kāore he wāhanga hononga tāpiri.
Ngā Āhuatanga Matua:
Ātete Tino Pai ki te Pāmahana Teitei:Te pāmahana mahi roa tae atu ki te 1600℃, te ātete poto ki te 1800℃, koia te mea pai rawa atu mō te ātete pāmahana teitei i roto i ngā momo e toru, he pai mō ngā oumu pāmahana tino teitei (pērā i ngā oumu whakarewa uku me ngā oumu pupuhi whakarewa).
Ātete Pai rawa atu ki te Waikura:I ngā pāmahana tiketike, ka hangaia he kiriata tiaki matotoru SiO₂ ki te mata, hei ārai i te waikuratanga atu o te SiC o roto, e whakaatu ana i te tino pumau i roto i ngā āhuarangi waikura.
Te Tauwehenga Tino Iti o te Whakawhanuitanga Wera:Ko te tauwehenga whānui wera he 4.5 × 10⁻⁶ /℃ anake, e whakarato ana i te ātete pai ki ngā ru wera, ahakoa he iti iho i tērā o te silicon carbide e herea ana e te silicon nitride.
He pakeke teitei, he ātete ki te kakahu:He tata ki te 9 te pakeke o te Mohs, ā, he tino ātete ki te horo me te pakū o ngā rauemi, he mea pai mō te rere o te hau i te pāmahana teitei me ngā āhuatanga rere wai kei roto ngā matūriki totoka.
Te pumau matū kaha:Ātete ki ngā waikawa kaha me ngā kawakore, ā, kāore e tauhohe ki te nuinga o ngā konganuku rewa.
Ngā Here:
He tino teitei te pāmahana whakawera, ka hua ake he paku teitei ake te porosity (tata ki te 5%–8%) me te paku ngoikore ake te ātete ki te pēhanga teitei; he tino teitei te pakarukaru o te pāmahana rūma, ā, kāore te ātete pānga i te rite te pai ki te silicon nitride e herea ana ki te silicon carbide.
2. Ngā ngongo tiaki RBSiC
Mā te whakamahi i ngā matūriki SiC me te karāpiti hei rauemi mata, ka uru te rauemi ki te tukanga whakaurunga silicon. Ka uru te silicon wai, ka whakakī i ngā pūwero, ka tauhohe ki te karāpiti hei hanga i tētahi wāhanga SiC hou, ā, i te mutunga ka hangaia he hanganga hiato o te "anga SiC + silicon kore utu".
Ngā Āhuatanga Matua:
Te matotoru teitei me te iti o te porosity:Ka whakakīia ngā pūwero e te silicon kore utu, ka whakaiti i te pūwero ki raro iho i te 1%, ka hua ake he pai te ātete hau me te ātete ki te pēhanga teitei, he pai mō ngā pēhanga teitei me ngā pāmahana teitei.
ngā āhuatanga hiri (pērā i ngā oumu whakawera pēhanga).
Ngā āhuatanga miihini pai:He kaha piko i te pāmahana rūma 250–400MPa, he pakari pakaru teitei, ā, he pai ake te ātete ki te pānga i te karawiti silicon kua whakakākanotia anō.
Ātete pāmahana teitei:Ko te pāmahana mahi mō te wā roa ko te 1200℃. Ki runga ake i te 1350℃, ka whakangawari te silicon kore utu, ka heke te kaha, ā, ka whakawhāiti i te mahi pāmahana teitei.
He pai te tukatuka:Mā te noho mai o te silicon kore utu ka whakaiti i te pakarukaru o te rauemi, ka māmā ake te miihini ki te hanga i ngā āhua uaua, ā, ka iti ake ngā utu whakaputa.
Ngā Here:
Ka whakawhāitihia te mahi pāmahana tiketike e te silicon kore utu, ā, kāore e pai mō te mahi roa i runga ake i te 1350℃; ka tere te tauhohe o te silicon kore utu ki ngā kawakore kaha, te konumohe rewa, me ētahi atu, ka hua ake he awhe ātete waikura whaiti.
3. Ngongo tiaki NSiC
He rauemi hiato tēnei i hangaia mā te hono pūmau i ngā matūriki SiC ki roto i te anga silicon carbide mā te whakaputa i te Si₃N₄ hei wāhanga here mā te tauhohenga nitriding.
Ngā Āhuatanga Matua:
1. Ātete Ru Wera Tino-tiketike:Nā te iti o te tauwehenga whānui wera me te pakari teitei o te wāhanga here Si₃N₄ ka taea e te ngongo tiaki te tu atu i te wera tere me te whakamatao i runga ake i te 1000℃ me te kore e pakaru nā ngā huringa pāmahana ohorere, he mea pai mō ngā āhuatanga mahi me ngā piki me ngā heke o te pāmahana.
2. Ātete Pai ki te Waikura:He tino pumau ki ngā waikawa kaha, ki ngā kawakore kaha, ki ngā konganuku rewa (pērā i te konumohe me te parahi), me ngā tote rewa, ā, he tino pai mō ngā taiao waikura i roto i ngā ahumahi matū me te whakarewa.
3. Te Kaha Mīhini Teitei:Ka eke te kaha piko o te pāmahana rūma ki te 300–500 MPa, he pai ake te pupuri i te kaha i ngā pāmahana teitei i ngā hua SiC parakore, ā, he kaha hoki te ātete ki te pānga.
4. Te pāmahana whakahaere:Te pāmahana mahi mō te wā roa 1350℃, te kaha ki te tu atu mō te wā poto tae atu ki te 1500℃.
5. Te Ārai Pai:Ka mau tonu te pai o te ārai hiko ahakoa i ngā pāmahana teitei, ka ārai i te pokanoa o te tohu thermocouple.
Ngā Here:
He iti ake te ātete ki te waikura i te silicon carbide kua whakakōatatia anō; ki te whakamahia mō te wā roa i roto i ngā hau waikura kaha, ka pakaru pea te paparanga waikura o te mata.
Ripanga Whakataurite Āhuatanga Matua
| Āhuatanga | Si₃N₄-SiC | R-SiC | RB-SiC |
| Te Pāmahana Whakahaere mō te Wā Roa | 1350℃ | 1600℃ | 1200℃ |
| Ātete Ru Wera | Tino Pai | Pai | Waenga |
| Ngā Āhuatanga Ārai Matewai | Pai | Tino Pai | Waenga |
| Ātete ki te Waikura | Kaha (ātete ki ngā waikawa me ngā kawakore/te konganuku rewa) | Kaha (ātete ki te waikura me te waikura) | Waenga (Kaua e whakamahi i ngā kawakore kaha/konumohe rewa) |
| Pūngao | 3%–5% | 5%–8% | <1% |
| Ātete Pānga | Mana | ngoikore | Waenga |
Ngā Ahumahi me ngā Horopaki Noa
1. NSiC thermocouple tiaki ngongo
Ahumahi Matū:Te ine i te pāmahana i roto i ngā oko tauhohenga waikawa-pūtake, ngā pūtau hiko tote rewa, me ngā tāke rokiroki waikura; e ātete ana ki te waikura roa mai i ngā waikawa kaha, ngā kawakore, me ngā tote rewa; he pai mō ngā āhuatanga tauhohenga wā-poto me ngā piki me ngā heke o te pāmahana.
Ahumahi Whakarewa:Te ine i te pāmahana o te konganuku rewa i roto i ngā pokepokea ai te konumohe mate-maka, ngā oumu whakarewa parahi, me ngā oumu whakarewa konganuku kore-whakarewa; ātete ki te horo o te konganuku rewa, ā, ka āraihia e te whakamarumaru pāmahana teitei te pokanoa o te tohu thermocouple.
Te Ahumahi Rauemi Hanga:Te ine i te pāmahana i roto i ngā oumu raima me ngā oumu whakawera gypsum; ka taea te aro atu ki te wera tere me te whakamatao i puta mai i te tīmatanga me te whakaweto o te oumu; ātete ki te waikura mai i te hau paru kawakore i roto i te oumu.
2. Ngā Ngongo Tiaki Thermocouple RSiC
Te Ahumahi Rauemi Hanga:Te ine i te pāmahana i roto i ngā rohe tahu oumu hurihuri sima, oumu roera uku, me ngā oumu kauhanga rauemi ātete; ka tu atu i ngā pāmahana tino tiketike o te 1600℃ me te horo kaha mai i ngā paura pāmahana teitei, he pai mō ngā āhuatanga whakaputa pāmahana teitei tonu.
Ahumahi Whakarewa:Te ine i te pāmahana i roto i ngā paipa wera o te oumu pupuhi, ngā koko rino rewa, me ngā taputapu maimoatanga mua o te rino rewa; ka taea te whakamahi mo te wa roa i roto i ngā hau waikura kaha, te ātete ki te waikura mai i te hau paowa pāmahana teitei me te para rino.
Ahumahi Karāhe:Te ine i te pāmahana i roto i ngā oumu rewa karāhe me ngā pokepokea ai karāhe; ka ātete ki te waikura me te mimiti o te karāhe rewa i te pāmahana tiketike, kia tutuki ai ngā whakaritenga pāmahana tiketike tonu o te hanga karāhe.
3. Ngā Ngongo Tiaki Thermocouple RBSiC
Te Ahumahi Hanga Mīhini:Te ine i te pāmahana i roto i ngā oumu whakamahana wera, ngā oumu tinei hau, me ngā oumu whakapūngao; he pai mō ngā āhuatanga pāmahana waenga me te pāmahana iti pumau, ā, ka taea te tu atu i te memeha ngawari o ngā matūriki i roto i te oumu.
Ahumahi Hiko:Te ine pāmahana mō ngā kohua pēhanga hauātea, ngā oumu wera, me ngā taputapu whakaora wera para; he pai mō ngā hauātea kūpapa, ngā hauātea ngoikore rānei te waikura, e tutuki ana i ngā whakaritenga ine pāmahana hiri mai i te pēhanga iti ki te pēhanga waenga-tiketike.
Ngā Taputapu Whakamātautau:Te ine pāmahana mō ngā oumu iti pēhanga-teitei me ngā oumu ngongo taiwhanga; nā te iti o te pūngao me te ātete hau e pai ai mō ngā taiao whakamātautau iti-wāhi, pēhanga-teitei hiri.
Te Whakarewa
Matū
Mana
Rererangi
Hikohiko
Ngā Umu Roera
Ngā Pātai Auau
Me āwhina koe? Tirohia ā mātou wānanga tautoko mō ngā whakautu ki ō pātai!
He kaihanga tūturu mātou, he tohunga tā mātou wheketere ki te whakaputa rauemi ātete ahi mō ngā tau neke atu i te 30. Ka oati mātou ki te whakarato i te utu pai rawa atu, te ratonga pai rawa atu i mua i te hoko me muri i te hoko.
Mō ia tukanga whakaputa, he pūnaha QC katoa tā te RBT mō te hanganga matū me ngā āhuatanga ā-tinana. Ā, ka whakamatautauria e mātou ngā taonga, ā, ka tukuna atu te tiwhikete kounga me ngā taonga. Mena he whakaritenga motuhake āu, ka whakapau kaha mātou ki te whakatutuki i aua whakaritenga.
He rerekē te wā tuku i runga i te rahinga. Engari ka oati mātou ki te tuku wawe tonu me te kounga kua oti te whakapūmau.
Ko te tikanga, ka tukuna e mātou he tauira kore utu.
Āe, he pono, nau mai haere mai ki te toro mai ki te kamupene RBT me ā mātou hua.
Kāore he rohe, ka taea e mātou te whakarato i te whakaaro me te otinga pai rawa atu e ai ki tō āhuatanga.
Neke atu i te 30 tau mātou e hanga ana i ngā rauemi ātete ahi, he kaha te tautoko hangarau me te nui o ngā wheako, ka taea e mātou te āwhina i ngā kiritaki ki te hoahoa i ngā oumu rerekē me te whakarato ratonga kotahi-mutu.
