Si3N4 mipira ya ceramic

Kufotokozera Kwachidule:

Kupanga: kukanikiza kwa isostatic, kuthamanga kwa mpweya;

Mtundu: wakuda kapena imvi;

Kuchulukitsitsa: 3.2-3.3g / cm3;

Zowona kalasi: G5-G1000;

Kukula kwakukulu: 1.5mm-100mm;

 

Si3N4 mipira ya ceramic ndi ziwiya zadothi mwatsatanetsatane sintered pa kutentha kwambiri m'mlengalenga sanali oxidizing. Kupatula hydrofluoric acid, sichimagwirizana ndi zidulo zina.


Mankhwala Mwatsatanetsatane

Zogulitsa

Silicon nitride mipira ya ceramic kukhala ndi mphamvu yayikulu, kukana kwambiri, kutentha kwambiri, kukana dzimbiri, asidi ndi kukana kwa alkali, ndipo itha kugwiritsidwa ntchito kwa nthawi yayitali m'madzi am'nyanja, ndikukhala ndi zotsekemera zabwino. Amatha kuthana ndi zovuta kugwiritsa ntchito komanso malo ogwira ntchito.

Si3N4 mipira ya ceramic khalani ndi kuuma kwakukulu komanso kulemera kopepuka. Pogwiritsidwa ntchito pazinthu zambiri kapena zida zina, amakhala ndi coefficient yocheperako komanso kukhathamiritsa kwa mphamvu yokoka, zomwe zimapangitsa kuti muchepetse kuchepa komanso kuwonjezera moyo wautumiki wa zowonjezera.

Si3N4 mipira ya ceramic Amagonjetsedwa ndi kutentha kwambiri ndipo amatha kugwira ntchito bwino m'malo otentha kwambiri pansi pa 1200 madigiri Celsius ndikusintha kwakung'ono kwakanthawi. Kuchita bwino kwamphamvu kwamphamvu, kutentha kwamphamvu ndi 900-1000 madigiri Celsius.

Ilinso ndi zida zodzipangira zokha ndipo itha kugwiritsidwa ntchito m'malo omwe palibe mafuta othira mafuta owonongeka kwambiri. Khalani chinthu chosankha mayendedwe a ceramic ndi mayendedwe a hybrid ceramic mpira.

Poyerekeza ndi mipira yachitsulo, zabwino zazikulu za mipira ya ceramic ndi:

(1) Ndi 59% yopepuka kuposa mipira yachitsulo, yomwe imachepetsa mphamvu ya centrifugal, kugubuduza ndi kumva kuwawa panjira yothamangayo pomwe chimbalangondo chikuyenda mwachangu;

(2) Modulus ya elasticity ndi 44% yayikulu kuposa yachitsulo, zomwe zikutanthauza kuti kuchuluka kwa mapindikidwe kumakhala kocheperako poyerekeza ndi mipira yachitsulo ikakakamizidwa;

(3) Kulimba ndikokwera kuposa chitsulo, HRC imafika 78;

(4) Coefficient of friction ndi yaying'ono, yopanda maginito, yamagetsi yamagetsi, komanso yolimbana ndi dzimbiri la mankhwala kuposa chitsulo;

(5) Kukwana koyerekeza kutentha kwamphamvu ndi 1/4 ya chitsulo, chomwe chitha kupirira kusintha kwadzidzidzi kutentha;

(6) Mapeto ake ali bwino, Ra amatha kufikira ma nanometers 4-6;

(7) Kutentha kwakukulu, mpira wa ceramic udakali ndi mphamvu komanso kuuma kwa 1050 degrees Celsius;

(8) Sichichita dzimbiri ndipo chitha kugwira ntchito mopanda mafuta.


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