Silicon carbide chitetezo chubu
M'mafakitale omwe zinthu zoopsa kwambiri zikuwopseza kukhulupirika kwa zida,silicon carbide (SiC) machubu otetezakuwoneka ngati chitsogozo chokhazikika. Mosiyana ndi zida zotchinjiriza wamba, machubu a SiC amaphatikiza sayansi yazinthu zapamwamba ndi uinjiniya wamphamvu kuti ateteze zida ndi njira zofunikira.
1. Chitetezo Chosafananizana M'mikhalidwe Yachidani
Machubu oteteza a SiC amakhala ngati mzere woyamba wachitetezo m'malo omwe kulephera sikungachitike:
(1) Kuteteza Kutentha: Kupirira kutentha mpaka 1600 ° C, kutchinga masensa, thermocouples, kapena probes kuchokera kuzitsulo zosungunuka, malawi, ndi plasma.
(2).
Kukaniza kwa Abrasion: Tetezani ku tinthu tomwe timakokoloka m'mabedi okhala ndi madzi, zopangira malasha, kapena ntchito zamigodi.
2. Kulondola ndi Kukhazikika kwa Miyeso Yofunikira
M'mafakitale apamwamba kwambiri, kulondola ndikofunikira kwambiri. Machubu a SiC amakulitsa kudalirika ndi:
(1) Kuchepetsa Kusokoneza kwa Signal: Zinthu zosagwiritsa ntchito zimalepheretsa kusokonezeka kwa ma elekitiroma mu masensa amagetsi.
(2) Kukhazikika kwa Matenthedwe: Kupindika kwa kutentha kwapafupi ndi zero kumatsimikizira kulondola kosasinthasintha ndi kuyeza kolondola pansi pa kusinthasintha kwachangu kwa kutentha.
(3) Kukhulupirika Kwambiri kwa Gasi: Kapangidwe kosatha kumalepheretsa kulowerera kwa gasi, ndikofunikira pamakina a vacuum kapena mlengalenga woyendetsedwa.
3. Kuthandizira machubu oteteza a Next-Generation Technologies SiC amatsegula zatsopano m'magawo omwe akubwera:
(1) Chuma cha Hydrogen: Kutumikira ngati ma sheath okhazikika a masensa pakupanga ma haidrojeni, kusungirako, ndi ma cell amafuta, kukana kukumbatira komanso kuwonetseredwa kwakukulu kwa H₂.
(2) Kupanga kwa Semiconductor: Tetezani masensa owoneka bwino ndi matenthedwe mu CVD (Chemical Vapor Deposition) ma reactors kuchokera ku zoyambira zowonongeka monga silane kapena ammonia.
(3) Kufufuza kwa Space: Chida chotchinga mu injini za rocket ndi mapulaneti opangira mapulaneti kuchokera kumatenthedwe amphamvu kwambiri komanso ma radiation aku cosmic.
4. Mtengo-Mwachangu Kupyolera mu Moyo Wautali
Ngakhale machubu a SiC ali ndi zokwera mtengo zam'tsogolo, moyo wawo umapindula umatanthauziranso mtengo:
(1) Kuchepetsa Nthawi Yopuma: Njira zowonjezera zachitsulo kapena quartz ndi 4-6x muzowonongeka kapena acidic, kuchepetsa kusamalidwa kosakonzekera.
(2) Zofunika Zopaka Zero: Mosiyana ndi zitsulo zomwe zimafunikira zokutira zoteteza, zomwe SiC ili nazo zimachotsa ndalama zomwe zimabwerezedwa mobwerezabwereza.
(3) Reusability: Pulumutsani njira zingapo pamagwiritsidwe ntchito ngati kuponyedwa kwachitsulo kapena kupanga magalasi osawonongeka.
5. Kusintha Mwamakonda Kwapadera kwa Zosowa Zapadera
Machubu oteteza a SiC amagwirizana ndi zovuta za niche kudzera muuinjiniya wogwirizana:
(1) Mapangidwe a Hybrid: Gwirizanitsani ndi zitsulo kapena zitsulo zopangira zinthu zambiri (monga zolumikizira za ulusi, ma flange).
(2) Zosintha Pamwamba: Zamkati zopukutidwa kuti zigwiritsidwe ntchito ndi kuwala kapena zakunja zojambulidwa kuti zipititse patsogolo kutentha.
(3) Kukula Kusinthasintha: Kupangidwa kuchokera ku mamilimita (ma lab-scale reactors) mpaka mamita (makina ogulitsa).
6. Kuyanjanitsa Kukhazikika
Machubu a SiC amathandizira machitidwe azogwiritsa ntchito mafakitale:
（1）Kupulumutsa Mphamvu: Kutentha kwambiri kumachepetsa kugwiritsa ntchito mafuta pang’anjo ndi 20% poyerekeza ndi zishango zachitsulo.
(2) Kuchepetsa Zinyalala: Moyo wautali wautumiki umachepetsa zinyalala zakuthupi kuti zisinthidwe pafupipafupi.
(3) Kuchepetsa Poizoni: Chotsani kufunikira kwa zokutira zowopsa (mwachitsanzo, ma aloyi opangidwa ndi faifi) m'malo owononga.
Shandong Zhongpeng Special Ceramics Co., Ltd ndi imodzi mwamayankho akulu kwambiri a silicon carbide ceramic ku China. SiC ukadaulo wa ceramic: Kulimba kwa Moh ndi 9 (Kulimba kwa Moh Chatsopano ndi 13), kukana kwambiri kukokoloka ndi dzimbiri, abrasion yabwino - kukana ndi anti-oxidation. Moyo wautumiki wa SiC ndi 4 mpaka 5 nthawi yayitali kuposa 92% alumina. MOR ya RBSiC ndi 5 mpaka 7 nthawi ya SNBSC, itha kugwiritsidwa ntchito pazinthu zovuta kwambiri. Ndondomeko yobwereketsa ndi yofulumira, yobweretsera ndi monga momwe inalonjezedwa ndipo khalidweli ndi lachiwiri kwa wina aliyense. Nthawi zonse timalimbikira kutsutsa zolinga zathu ndikubwezeranso mitima yathu kwa anthu.
