Yakasanganiswa Silica Yakanakisa Kupisa Uye Kemikari Zvivakwa SeCrucible Material

Electro-quartz
Fused quartz
Fused silica bundu

Tsanangudzo Pfupi

Fused Silica inogadzirwa kubva kune yakakwira kuchena silica, ichishandisa yakasarudzika fusion tekinoroji kuve nechokwadi chemhando yepamusoro. Yedu Fused Silica inopfuura 99% amorphous uye ine yakanyanya kuderera coefficient yekuwedzera kwemafuta uye kuramba kwakanyanya kuvhundutsa kupisa. Fused Silica inert, ine yakanakisa kugadzikana kwemakemikari, uye ine yakaderera zvakanyanya magetsi conductivity.

BATA ZVINO

Applications

Fused Silica chinhu chakanakisa mbishi chekushandisa mukudyara kwekudyara, marefractories, foundries, tekinoroji ceramics, uye mamwe maapplication anoda anowirirana, akanyanya kuchena chigadzirwa chine yakaderera zvakanyanya kupisa kwekuwedzera.

Kuumbwa Kwemakemikari	First Grade	Typical	Second Grade	Typical
SiO2	99.9% min	99.92	99.8% min	99.84
Fe2O3	50ppm max	19	80ppm max	50
Al2O3	100ppm max	90	150ppm max	120
K2O	30ppm max	23	30ppm max	25

Nzira Yekugadzira Uye Hunhu

Fused quartz ine yakanakisa kupisa uye makemikari zvimiro se crucible zvinhu zveimwe kristaro kukura kubva mukunyunguduka, uye kuchena kwayo kwepamusoro uye kudhura kwakaderera kunoita kuti iwedzere kukwezva pakukura kwepamusoro-kuchena makristasi.Zvisinei, mukukura kwemamwe marudzi emakristasi, a layer yepyrolytic carbon coating inodiwa pakati pekunyunguduka uye quartz crucible.

Zvinhu zvakakosha zveFused Silica

Fused silica ine akati wandei anoshamisa maficha ane chekuita nemakanika, kupisa, makemikari uye optical zvivakwa:
• Yakaoma uye yakasimba, uye haina kunyanya kuoma muchina nekupukuta. (Mumwe anogona zvakare kushandisa laser micromachining.)
• Iyo tembiricha yepamusoro yegirazi inoita kuti zviome kunyungudika pane mamwe magirazi emaziso, asi zvinorevawo kuti tembiricha yekushanda yakakwira inogoneka. Nekudaro, yakasanganiswa silica inogona kuratidza devitrification (yemunharaunda crystallization muchimiro checristobalite) pamusoro pe1100 ° C, kunyanya pasi pesimba rehumwe tsvina yekutsvagisa, uye izvi zvinogona kukanganisa zvinhu zvemaziso.
• Thermal kuwedzera coefficient yakaderera zvikuru - inenge 0.5 · 10−6 K-1. Izvi zvakaderera zvakapetwa kakawanda pane zvemagirazi chaiwo. Kuwedzera kushomeka kwekushisa kwakatenderedza 10−8 K−1 kunogoneka nechimiro chakagadziridzwa cheyakasanganiswa silica ine imwe titanium dioxide, yakaunzwa naCorning [4] uye inonzi ultra low expansion glass.
• Kurwisana kwepamusoro kwekushisa kunokonzerwa nekuwedzera kusina simba kwekushisa; kunongori pakati nepakati kushushikana kwemagetsi kunyangwe tembiricha yepamusoro inoitika nekuda kwekukurumidza kutonhora.
• Sirika inogona kuve yemakemikari yakachena kwazvo, zvichienderana nenzira yekugadzira (ona pasi apa).
• Sirika ine makemikari inert, kunze kwehydrofluoric acid uye yakasimba alkaline mhinduro. Pakupisa kwepamusoro, zvakare inonyungudika mumvura (yakanyanya kudarika crystalline quartz).
• Nzvimbo yekujekesa yakafara chaizvo (inenge 0.18 μm kusvika 3 μm), ichibvumira kushandiswa kwesilika yakasanganiswa kwete chete munzvimbo yose yakazara inooneka, asiwo mu ultraviolet uye infrared. Nekudaro, iyo miganho inoenderana zvakanyanya nemhando yezvinhu. Semuyenzaniso, mabhendi akasimba ekunyudza infrared anogona kukonzereswa neOH zvemukati, uye kutorwa kweUV kubva kutsvina yesimbi (ona pazasi).
• Sechinhu chinonzi amorphous, fused silica is optically isotropic - kusiyana necrystalline quartz. Izvi zvinoreva kuti haina birefringence, uye iyo refractive index (ona Figure 1) inogona kuratidzwa neiyo imwe Sellmeier formula.