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 ekunyibilikeni, kwaye ukucoceka kwayo okuphezulu kunye neendleko eziphantsi kwenza ukuba kube nomtsalane ngakumbi ekukhuleni kweekristale eziphezulu. 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.