Chitoliro Choteteza Silicon Nitride Cholumikizidwa ndi Silicon Carbide Thermocouple: Chishango Chapamwamba Kwambiri Choyezera Kutentha kwa Mafakitale

Ma thermocouple ndi maziko a kuyang'anira kutentha m'mafakitale ambiri—kuyambira kusungunula zitsulo mpaka kupanga mankhwala. Komabe, magwiridwe antchito awo ndi moyo wawo zimadalira kwathunthu chinthu chimodzi chofunikira: chubu choteteza. M'malo ovuta a mafakitale, machubu oteteza achikhalidwe a thermocouple (opangidwa ndi chitsulo, alumina, kapena silicon carbide yoyera) nthawi zambiri amalephera kupirira kutentha kwambiri, zinthu zowononga, kapena tinthu tating'onoting'ono tomwe timayabwa. Izi zimapangitsa kuti ma thermocouple asinthidwe pafupipafupi, deta yolakwika ya kutentha, komanso nthawi yokwera mtengo yopangira.​

Ngati mwatopa ndi kunyalanyaza kudalirika kwa thermocouple,Machubu Oteteza a Silicon Nitride Olumikizidwa ndi Silicon Carbide (NSiC) ThermocoupleNdi njira yosinthira zinthu zomwe mukufuna. Yopangidwa kuti iteteze ma thermocouple m'mikhalidwe yovuta kwambiri, machubu a NSiC amatsimikizira kutentha koyenera komanso kolondola pamene akuwonjezera nthawi yogwiritsira ntchito zida zanu zoyezera zofunika kwambiri.​

Chifukwa Chake Silicon Nitride Yogwirizana ndi Silicon Carbide Imaonekera Poteteza Thermocouple​

Machubu oteteza ma thermocouple amafunika kukhala ndi makhalidwe osiyanasiyana: kukana kutentha, kukana dzimbiri, mphamvu ya makina, ndi kutentha. NSiC imachita bwino kwambiri m'mbali zonsezi, ikuposa zipangizo zachikhalidwe pa chilichonse chofunikira:

1. Kukana Kutentha Kwambiri Kuti Muzindikire Mosasokoneza​

Ma thermocouple m'mafakitale monga opanga magalasi kapena opangidwa ndi zitsulo amagwira ntchito kutentha kopitirira 1,500°C. Machubu oteteza ma thermocouple a NSiC amagwira ntchito mosavuta—amakhala ndi kutentha kosalekeza mpaka 1,600°C (2,912°F) komanso amakana kutentha kwa nthawi yochepa mpaka 1,700°C (3,092°F). Mosiyana ndi machubu achitsulo omwe amasungunuka kapena kusungunuka, kapena machubu a alumina omwe amasweka chifukwa cha kutentha, NSiC imasunga kapangidwe kake ngakhale kutentha kukusintha mofulumira. Izi zikutanthauza kuti thermocouple yanu imakhala yotetezeka, ndipo deta yanu ya kutentha imakhala yolondola—ngakhale kutentha kuli koopsa bwanji.​

2. Kukana Kwambiri Kudzimbiritsa Poteteza Nkhani Zankhanza​

Machitidwe a mafakitale nthawi zambiri amaika ma thermocouple ku zitsulo zosungunuka (aluminium, zinc, copper), acidic/alkaline solutions, kapena mpweya wowononga (sulfur dioxide, chlorine). Kapangidwe ka NSiC kolimba, kolumikizidwa ndi nitride kamapanga chotchinga chosagwedezeka motsutsana ndi zinthuzi. Mosiyana ndi machubu oyera a silicon carbide, omwe amatha kusungunuka m'malo otentha kwambiri, kapangidwe kapadera ka NSiC kamawonjezera kukana kwa okosijeni—kuonetsetsa kuti thermocouple yanu imatetezedwa ku dzimbiri kwa zaka zambiri. Izi ndizofunikira kwambiri pakugwiritsa ntchito monga kukonza mankhwala, kutentha zinyalala, ndi kupanga zinthu za batri.​

3. Mphamvu Yapadera Yamakina Yopirira Kuwonongeka ndi Kukhudzidwa​

Ma thermocouple m'mafakitale a simenti, malo opangira magetsi, kapena malo opangira mchere amakumana ndi zoopsa nthawi zonse: fumbi lolimba, tinthu touluka, komanso kuwonongeka kwa makina. Machubu oteteza ma thermocouple a NSiC amapangidwa kuti athe kuthana ndi mavutowa, ndi mphamvu yopindika yoposa 300 MPa ndi kuuma kwa Vickers (HV10) kwa ≥ 1,800. Izi zimapangitsa kuti akhale olimba nthawi 3-5 kuposa machubu achikhalidwe, zomwe zimachepetsa kufunikira kosintha nthawi zambiri. Pa ntchito zanu, izi zikutanthauza kuti nthawi yogwira ntchito siikhala bwino, ndalama zochepa zokonzera, komanso magwiridwe antchito odalirika a thermocouple.​

4. Kupereka Mphamvu Yabwino Kwambiri Yotenthetsera Mafunde Mwachangu komanso Molondola​

Mtengo wa thermocouple uli m'kuthekera kwake kuyankha mwachangu kusintha kwa kutentha. Mphamvu ya kutentha ya NSiC (60–80 W/(m·K)) ndi yapamwamba kwambiri kuposa ya alumina kapena machubu achitsulo, zomwe zimathandiza kuti kutentha kusamutsidwe mwachangu kuchokera mu ndondomekoyi kupita ku thermocouple. Izi zimatsimikizira kuti thermocouple yanu imapereka deta yolondola komanso yeniyeni—yofunikira kwambiri pakusunga kuwongolera njira ndi khalidwe la malonda. Kuphatikiza apo, mphamvu yocheperako ya kutentha ya NSiC (3.5–4.5 × 10⁻⁶/°C) imachepetsa kupsinjika kwa kutentha, kuletsa ming'alu yomwe ingasokoneze kulondola kwa muyeso.​

5. Kutalika Kwautali Kotsika Mtengo Pa Ndalama Zonse Zotsika za Eni Anu​

Ngakhale machubu oteteza a NSiC thermocouple angakhale ndi ndalama zambiri zoyambira kuposa njira zachikhalidwe, moyo wawo wautali (zaka 2-5 m'mikhalidwe yovuta) komanso zosowa zochepa zosamalira zimapereka ndalama zambiri kwa nthawi yayitali. Mwa kuchepetsa kuchuluka kwa thermocouple m'malo mwake komanso nthawi yogwira ntchito yopanga, NSiC imachepetsa mtengo wanu wonse wa umwini (TCO) ndikuwonjezera phindu lanu pa ndalama zomwe mwayika (ROI). Kwa mafakitale omwe akufuna kukonza bwino ntchito, iyi ndi njira yanzeru komanso yotetezeka mtsogolo.​