Yakasanganiswa Silica Yakanakisa Kupisa Uye Kemikari Zvivakwa SeCrucible Material
- Electro-quartz
- Fused quartz
- Fused silica bundu
Tsanangudzo Pfupi
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 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.
Fused quartz ine yakanakisa kupisa uye makemikari zvimiro se crucible zvinhu zvekukura kwekristaro imwe chete kubva mukunyunguduka, uye kuchena kwayo kwepamusoro uye kudhura kwakaderera kunoita kuti iwedzere kukwezva pakukura kwemakristasi akachena.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 yekuwedzera 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 neyakagadziridzwa fomu yakasanganiswa 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.
