Ngwakọta Silica dị mma na akụrụngwa kemịkalụ dị ka ihe na-emebi emebi

Electro-quartz
Quartz agbakọtara
Akpụkpọ anụ silica

Nkọwa dị mkpirikpi

A na-eme Silica Fused site na silica dị ọcha dị elu, na-eji teknụzụ ngwakọta pụrụ iche iji hụ na ọ kacha mma. Silica Fused anyị karịrị 99% amorphous ma nwee ọnụọgụ dị oke ala nke mgbasawanye ọkụ yana nnukwu iguzogide ujo ọkụ. Silica Fused bụ ihe na-adịghị agwụ agwụ, nwere nkwụsi ike kemịkalụ mara mma, ma nwee ngbanwe eletrik dị ala.

Kpọtụrụ ugbu a

Ngwa

Fused Silica bụ akụrụngwa dị mma maka iji nkedo itinye ego, refractories, foundries, teknuzu ceramics, na ngwa ndị ọzọ chọrọ ngwaahịa na-agbanwe agbanwe, ịdị ọcha dị elu yana mgbasawanye ọkụ dị ala.

Ngwakọta kemịkalụ	Ọkwa mbụ	Ụdị	Ọkwa nke abụọ	Ụdị
SiO2	99.9% nkeji	99.92	99.8% nkeji	99.84
Fe2O3	50ppm kacha	19	80ppm kacha	50
Al2O3	100ppm max	90	150ppm max	120
K2O	30ppm kacha	23	30ppm kacha	25

Usoro Mmepụta na Njirimara

Fused quartz nwere magburu onwe thermal na kemịkal Njirimara dị ka crucible ihe maka otu kristal na-eto site na agbaze, na ịdị ọcha ya na ọnụ ala dị ala na-eme ka ọ mara mma karịsịa maka uto nke kristal dị elu. Otú ọ dị, na uto nke ụfọdụ ụdị kristal, a oyi akwa nke pyrolytic carbon mkpuchi chọrọ n'etiti gbazee na quartz crucible.

Njirimara igodo nke Silica Fused

Silica fused nwere ọtụtụ atụmatụ dị ịrịba ama ma gbasara igwe ya, thermal, chemical and optical properties:
• Ọ siri ike ma sie ike, ọ bụghịkwa ihe siri ike iji igwe na polishing. (Otu nwekwara ike itinye micromachining laser.)
• Okpomọkụ mgbanwe iko dị elu na-eme ka ọ sie ike ịgbaze karịa enyo anya ndị ọzọ, mana ọ na-egosikwa na ọ ga-ekwe omume okpomọkụ ọrụ dị elu. Otú ọ dị, silica fused nwere ike igosi devitrification (cristalization mpaghara n'ụdị cristobalite) karịa 1100 Celsius C, karịsịa n'okpuru mmetụta nke ụfọdụ adịghị ọcha, na nke a ga-emebi ihe anya.
• Ọnụ ọgụgụ mgbasawanye nke okpomọkụ dị oke ala - ihe dịka 0.5 · 10-6 K-1. Nke a dị ọtụtụ ugboro ala karịa nke enyo enyo. Ọbụna mgbasawanye ọkụ na-esighị ike gburugburu 10-8 K-1 ga-ekwe omume site n'ụdị silica fused na ụfọdụ titanium dioxide, nke Corning [4] webatara na nke a na-akpọ ultra low glass glass.
• Mgbochi dị elu nke okpomọkụ bụ ihe si na mgbasawanye ọkụ na-adịghị ike; enwere naanị nrụgide igwe na-agafeghị oke ọbụlagodi mgbe gradients okpomọkụ dị elu na-eme n'ihi ngwa ngwa jụrụ oyi.
• Silica nwere ike ịdị ọcha nke ukwuu, dabere n'usoro nrụpụta (lee n'okpuru).
• Silica bụ chemically nnọọ inert, ewezuga hydrofluoric acid na ike alkaline ngwọta. N'ebe okpomọkụ dị elu, ọ na-esikwa ike n'ime mmiri (karịa kristal quartz).
• Mpaghara nghọta dị oke obosara (ihe dị ka 0.18 μm ruo 3 μm), na-enye ohere iji silica fused ọ bụghị naanị n'ime mpaghara spectral a na-ahụ anya, kamakwa na ultraviolet na infrared. Agbanyeghị, oke na-adabere na ịdịmma akụrụngwa. Dịka ọmụmaatụ, eriri infrared siri ike nwere ike bute ya site na ọdịnaya OH, yana nnabata UV site na adịghị ọcha ọla (lee n'okpuru).
• Dị ka ihe amorphous, silica fused bụ anya isotropic - n'ụzọ dị iche na quartz crystalline. Nke a na-egosi na o nweghị ihe ọ bụla, yana ntuzigharị ya (lee foto 1) nwere ike iji otu usoro Sellmeier mara.