Zosakaniza Silica Zabwino Kwambiri Zotentha Ndi Zamankhwala Monga Zida Zowonongeka

Electro-quartz
Kuphatikizika kwa quartz
Kusakaniza silika mtanda

Kufotokozera Kwachidule

Silika ya Fused imapangidwa kuchokera ku silica yoyera kwambiri, pogwiritsa ntchito ukadaulo wapadera wophatikizira kuonetsetsa kuti ndiyabwino kwambiri. Silika yathu ya Fused ndi yopitilira 99% amorphous ndipo ili ndi gawo lotsika kwambiri lakukula kwamafuta komanso kukana kugwedezeka kwamafuta. Fused Silica ndi inert, ili ndi kukhazikika kwamankhwala kwabwino kwambiri, ndipo imakhala ndi mphamvu yotsika kwambiri yamagetsi.

ONANI TSOPANO

Mapulogalamu

Fused Silica ndi zida zabwino kwambiri zomwe zimagwiritsidwa ntchito popanga ndalama, zokanira, zoyambira, zoumba zaluso, ndi ntchito zina zomwe zimafunikira chinthu chokhazikika, choyera kwambiri chokhala ndi kutentha kochepa kwambiri.

Chemical Composition	Gulu Loyamba	Chitsanzo	Gulu Lachiwiri	Chitsanzo
SiO2	99.9% mphindi	99.92	99.8% mphindi	99.84
Fe2O3	50ppm pa	19	80ppm pa	50
Al2O3	100ppm max	90	150ppm Max	120
K2O	30ppm pa	23	30ppm pa	25

Njira Yopanga Ndi Makhalidwe

Quartz yosakanikirana imakhala ndi matenthedwe abwino kwambiri komanso mankhwala monga zinthu zopangira kukula kwa kristalo imodzi kuchokera kusungunuka, ndipo kuyera kwake kwakukulu ndi mtengo wake wotsika kumapangitsa kuti ikhale yokongola kwambiri pakukula kwa makhiristo apamwamba kwambiri. wosanjikiza wa zokutira kaboni wa pyrolytic amafunikira pakati pa kusungunuka ndi quartz crucible.

Zofunika Kwambiri za Fused Silika

Silika yosakanikirana ili ndi zinthu zingapo zochititsa chidwi zokhudzana ndi makina ake, kutentha, mankhwala ndi kuwala:
• Ndilolimba komanso lolimba, ndipo silovuta kwambiri ku makina ndi kupukuta. (Mmodzi angagwiritsenso ntchito laser micromachining.)
• Kutentha kwambiri kwa magalasi kumapangitsa kuti zikhale zovuta kusungunuka kusiyana ndi magalasi ena owoneka bwino, komanso zikutanthauza kuti kutentha kwakukulu ndi kotheka. Komabe, silika wosakanikirana akhoza kusonyeza devitrification (crystallization m'deralo mwa mawonekedwe a cristobalite) pamwamba pa 1100 ° C, makamaka chifukwa cha zonyansa zina, ndipo izi zingawononge mawonekedwe a kuwala.
• Kukula kwa kutentha kwapakati kumakhala kochepa kwambiri - pafupifupi 0.5 · 10−6 K-1. Izi ndizotsika kangapo kusiyana ndi magalasi wamba. Ngakhale kutentha kocheperako kwambiri kuzungulira 10−8 K−1 ndikotheka ndi mawonekedwe osinthidwa a silica yosakanikirana ndi titanium dioxide, yoyambitsidwa ndi Corning [4] ndikutchedwa galasi lokulitsa lotsika kwambiri.
• Kuthamanga kwapamwamba kwa kutentha kwapakati ndi chifukwa cha kuwonjezereka kofooka kwa kutentha; pamakhala kupsinjika kwamakina kocheperako ngakhale pamene kutentha kwapamwamba kumachitika chifukwa cha kuzizira kofulumira.
• Silika ikhoza kukhala yoyera kwambiri, malingana ndi njira yopangira (onani m'munsimu).
• Silika ndi mankhwala amphamvu kwambiri, kupatulapo hydrofluoric acid ndi mankhwala amchere kwambiri. Pakutentha kokwera, imasungunukanso m'madzi (mochuluka kuposa crystalline quartz).
• Dera lowonekera ndilotalikirapo (pafupifupi 0.18 μm mpaka 3 μm), kulola kugwiritsa ntchito silika wosakanikirana osati m'dera lonse lowoneka bwino, komanso mu ultraviolet ndi infrared. Komabe, malire amadalira kwambiri zinthu zakuthupi. Mwachitsanzo, mayamwidwe amphamvu a infrared amatha kuyambitsidwa ndi zomwe zili mu OH, komanso kuyamwa kwa UV kuchokera ku zonyansa zachitsulo (onani pansipa).
• Monga chinthu cha amorphous, silika wosakanikirana ndi optically isotropic - mosiyana ndi crystalline quartz. Izi zikutanthauza kuti ilibe birefringence, ndipo index yake ya refractive (onani Chithunzi 1) ikhoza kudziwika ndi formula imodzi ya Sellmeier.