Katundu wopanda zitsulo wopangidwa ndi silicon ndi nayitrojeni, silicon nitride (Si3N4) ndi chinthu chadothi chapamwamba chomwe chimakhala ndi makina osakanikirana, otentha, ndi magetsi. Kuphatikiza apo, poyerekeza ndi zoumba zonse zadothi, ndi ceramic yochita bwino kwambiri yokhala ndi mphamvu yokulirapo yocheperako yomwe imapereka kukana kutenthedwa kwa kutentha.
Mawonekedwe
Chifukwa cha kutsika kwake kowonjezera kwamafuta, zinthuzo zimakhala ndi kukana kwamphamvu kwambiri kwamafuta komanso kulimba kwabwino kwa fracture. Zogwiritsira ntchito za Si3N4 zimagonjetsedwa ndi zoopsa komanso zowopsa. Zogwirira ntchitozi zimatha kupirira kutentha mpaka 1400 °C ndipo sizilimbana ndi mankhwala, zowononga, ndi zitsulo zinazake zosungunula monga aluminiyamu, komanso ma asidi ndi alkaline solution. Chinthu china ndi kachulukidwe wake wotsika. Ili ndi kachulukidwe kochepa ka 3.2 mpaka 3.3 g/cm3, yomwe imakhala yopepuka ngati aluminiyamu (2.7 g/cm3), ndipo ili ndi mphamvu yopindika yopitilira ≥900 MPa.
Kuphatikiza apo, Si3N4 imadziwika ndi kukana kuvala komanso kupitilira kutentha kwambiri kwa zitsulo zambiri, monga mphamvu zotentha kwambiri komanso kukana kukwawa. Amapereka kusakanikirana kwapamwamba kwa kukwapula ndi kutsekemera kwa okosijeni ndipo kumaposa mphamvu zotentha kwambiri zazitsulo zambiri. Chifukwa cha kutentha kwake kochepa komanso kukana kwamphamvu kuvala, imatha kupirira zovuta kwambiri m'mafakitale ovuta kwambiri. Komanso, silicon nitride ndi njira yabwino kwambiri pakafunika kutentha kwambiri komanso kulemetsa kwambiri.
Katundu
● Kuthyoka kwakukulu
● Mphamvu zotha kusintha
● Kuchulukana kochepa kwambiri
● Zodabwitsa zamphamvu kwambiri kutenthetsa kutentha
● Kutentha kwakukulu kogwira ntchito mumlengalenga wotulutsa okosijeni
Njira Yopangira
Njira zisanu zomwe zimagwiritsidwa ntchito popanga silicon nitride-zimapangitsa kuti pakhale zida zogwirira ntchito ndi ntchito zosiyanasiyana.
SBRSN (rection-bonded silicon nitride)
GPSN (mphamvu ya gas sintered silicon nitride)
HPSN (silicon nitride)
HIP-SN (kutentha kwa silicon nitride)
RBSN (rection-bonded silicon nitride)
Mwa izi zisanu, GPSN ndiyo njira yomwe imagwiritsidwa ntchito kwambiri popanga.
Zitsanzo za Ntchito
Mipira ndi ma Rolling Elements for Light
Chifukwa cha kulimba kwawo kwapang'onopang'ono komanso mawonekedwe abwino a tribological, zoumba za silicon nitride ndizoyenera kugwiritsidwa ntchito ngati mipira ndi zinthu zogudubuza zowunikira, zolondola kwambiri, zida zolemetsa za ceramic, ndi zida zamagalimoto zopanikizika kwambiri. Kuphatikiza apo, njira zowotcherera zimagwiritsa ntchito zida zamphamvu zolimbana ndi kutentha kwapang'onopang'ono komanso kukana kutentha kwambiri.
Mapulogalamu Otentha Kwambiri
Kupatula apo, wakhala akugwiritsidwa ntchito m'malo otentha kwambiri. Mfundo yakuti ndi imodzi mwa zinthu zochepa zadothi za monolithic zomwe zimatha kupirira kutentha kwambiri komanso kutentha kwa kutentha komwe kumapangidwa ndi injini za rocket za hydrogen / oxygen.
Makampani Agalimoto
Pakadali pano, zida za silicon nitride zimagwiritsidwa ntchito makamaka mumakampani amagalimoto pamakina a injini ndi zida zowonjezera injini, monga ma turbocharger a inertia yotsika komanso kutsika kwa injini ndi mpweya, mapulagi oyaka oyambitsa mwachangu, ma valve owongolera mpweya kuti achuluke, ndi zomata za rocker arm kuti injini za gasi zitsike.
Makampani a Zamagetsi
Chifukwa cha mawonekedwe ake apadera amagetsi, muzogwiritsira ntchito ma microelectronics, silicon nitride imagwiritsidwa ntchito kwambiri ngati insulator ndi chotchinga chamankhwala popanga mabwalo ophatikizika oyika zida zotetezedwa. Silicon nitride imagwiritsidwa ntchito ngati chosanjikiza chokhala ndi chotchinga chachikulu cha ma ion sodium ndi madzi, zomwe ndi zinthu ziwiri zomwe zimayambitsa dzimbiri komanso kusakhazikika kwa ma microelectronics. Mu ma capacitor a zida za analogi, chinthuchi chimagwiritsidwanso ntchito ngati chotchingira magetsi pakati pa zigawo za polysilicon.
Mapeto
Silicon nitride ceramics ndi zinthu zothandiza. Mtundu uliwonse wa ceramic uwu uli ndi zinthu zapadera zomwe zimapangitsa kuti zikhale zothandiza m'magawo osiyanasiyana. Kumvetsetsa mitundu yambiri ya silicon nitride ceramics kumapangitsa kukhala kosavuta kusankha yabwino kwambiri pakugwiritsa ntchito.
