I-Silica eDityanisiweyo eGqwesileyo eThermal kunye neePropathi zeMichiza njengeMathiriyeli eCrucible

Electro-quartz
I-quartz edibeneyo
Intlama ye-silica edibeneyo

Ingcaciso emfutshane

I-Silica eFused yenziwe nge-silica yococeko oluphezulu, isebenzisa itekhnoloji yokudibanisa eyodwa ukuqinisekisa owona mgangatho uphezulu.I-Silica yethu yeFused ingaphezulu kwe-99% ye-amorphous kwaye ine-coefficient ephantsi kakhulu yokwandiswa kwe-thermal kunye nokuchasana okuphezulu kwi-thermal shock.I-Fused Silica i-inert, inozinzo olubalaseleyo lwekhemikhali, kwaye inokuqhuba kombane okuphantsi kakhulu.

QHAGAMSHELANA NGOKU

Usetyenziso

I-Fused Silica yimathiriyeli ekrwada egqwesileyo yokusetyenziswa kutyalo-mali, i-refractories, i-Foundries, i-ceramics zobugcisa, kunye nezinye izicelo ezifuna imveliso engaguqukiyo, ecocekileyo ephezulu kunye nokwandiswa kwe-thermal ephantsi kakhulu.

Ukuqulunqwa kwemichiza	IBanga lokuqala	Isiqhelo	IBanga lesibini	Isiqhelo
SiO2	99.9% min	99.92	99.8% min	99.84
Fe2O3	50ppm max	19	80ppm ubukhulu	50
Al2O3	100ppm max	90	150ppm max	120
K2O	30ppm ubukhulu	23	30ppm ubukhulu	25

Inkqubo yeMveliso kunye neMpawu

I-quartz edibeneyo ineempawu ezintle kakhulu zokushisa kunye neekhemikhali njengezinto ezinqamlekileyo zokukhula kwekristale enye ukusuka kwi-nyibilika, kwaye ukucoceka kwayo okuphezulu kunye neendleko eziphantsi kwenza ukuba kube nomtsalane ngakumbi ekukhuleni kweekristale ezicocekileyo. Nangona kunjalo, ekukhuleni kweentlobo ezithile zeekristale umaleko we-pyrolytic carbon coating iyafuneka phakathi kokunyibilika kunye ne-quartz crucible.

Iimpawu eziphambili zeSilica eFused

I-silica edibeneyo ineempawu ezininzi ezimangalisayo malunga nomatshini, i-thermal, iikhemikhali kunye neempawu zokukhanya:
• Iqinile kwaye yomelele, kwaye ayinzima kakhulu ukuyicolisa.(Umntu unokusebenzisa i-laser micromachining.)
• Iqondo lobushushu leglasi eliphezulu lenza kube nzima ukunyibilika kunezinye iiglasi, kodwa likwathetha ukuba amaqondo obushushu asebenza kakhulu ayenzeka.Nangona kunjalo, i-silica edibeneyo ingabonakalisa i-devitrification (i-crystallization yendawo ngendlela ye-cristobalite) ngaphezu kwe-1100 ° C, ngokukodwa phantsi kweempembelelo zokungcola okuthile, kwaye oku kuya konakalisa iipropati ze-optical.
• I-coefficient yokwandiswa kwe-thermal iphantsi kakhulu – malunga ne-0.5 · 10−6 K−1.Oku kungaphantsi ngokuphindwe kaninzi kuneeglasi eziqhelekileyo.Nokwanda kwe-thermal ebuthathaka kakhulu malunga ne-10−8 K−1 inokwenzeka ngohlobo olulungisiweyo lwesilica edityanisiweyo kunye netitanium dioxide, yaziswa yiCorning [4] kwaye ibizwa ngokuba yiglasi yokwandisa ephantsi kakhulu.
• Ukuxhatshazwa kwe-thermal ephezulu kubangelwa ukwanda kwe-thermal obuthathaka;kukho uxinzelelo oluphakathi koomatshini naxa iqondo lobushushu eliphakamileyo lenzeka ngenxa yokupholisa ngokukhawuleza.
• I-silica inokucoceka kakhulu ngokwekhemikhali, ngokuxhomekeke kwindlela eyenziwe ngayo (jonga ngezantsi).
• I-silica ayinzi kakhulu ngokwekhemikhali, ngaphandle kwe-hydrofluoric acid kunye nezinyibiliko zealkaline.Kubushushu obuphezulu, ikwanyibilika ngandlel’ ithile emanzini (kakhulu kune-crystalline quartz).
• Ummandla ongafihliyo ubanzi kakhulu (malunga ne-0.18 μm ukuya kwi-3 μm), okuvumela ukusetyenziswa kwe-silica edibeneyo kungekuphela nje kuyo yonke ingingqi ye-spectral ebonakalayo, kodwa nakwi-ultraviolet kunye ne-infrared.Nangona kunjalo, imida ixhomekeke kakhulu kumgangatho wezinto eziphathekayo.Umzekelo, iibhendi zokufunxa ezomeleleyo ze-infrared zinokubangelwa ngumxholo we-OH, kunye nokufunxa kwe-UV kubumdaka besinyithi (jonga ngezantsi).
• Njengesixhobo se-amorphous, i-silica edibeneyo i-optically isotropic - ngokuchasene ne-crystalline quartz.Oku kuthetha ukuba ayinayo i-birefringence, kwaye isalathisi sayo se-refractive (jonga uMfanekiso 1) sinokubonakaliswa ngefomula enye ye-Sellmeier.