Synthetic Alexandrite - Yotambasulidwa - Czochralski - Crystal Rise - Video
Zamkatimu:
Alexandrite ndi imodzi mwa miyala yodabwitsa kwambiri.
Gulani miyala yamtengo wapatali yachilengedwe m'sitolo yathu ya miyala yamtengo wapatali
kupanga alexandrite
Kusiyana kwakukulu pakati pa alexandrite ndi miyala ina yamtengo wapatali ndikutha kwake kusintha mtundu kutengera kuwala kozungulira. Alexandrite ndi bluish wobiriwira kapena udzu wobiriwira pamene kuyatsa koyera kwa fulorosenti kumagwiritsidwa ntchito, koma kumakhala kofiirira kapena ruby kufiira padzuwa kapena makandulo.
Chodabwitsa ichi chimatchedwa zotsatira za alexandrite ndipo zimagwiritsidwa ntchito ndi mchere wina womwe ungasinthe mtundu. Mwachitsanzo, ma garnets omwe amatha kusintha mtundu amatchedwanso alexandrite garnets.
Alexandrite ndi mitundu yosiyanasiyana ya mchere wa chrysoberyl. Kusintha kwachilendo kwamtundu kumachitika chifukwa cha kupezeka kwa ayoni a chromium mu kristalo lattice. Pakadali pano, alexandrite yachilengedwe imatengedwa kuti ndi imodzi mwamiyala yokongola kwambiri komanso yosowa.
Zoonadi, izi zachititsa kuti fakes awoneke pamsika omwe amangofanana pang'ono ndi mwala woyambirira, popeza samawonetsa zotsatira zabwino za kusintha kwa mtundu ndi kusewera kwa kuwala mkati mwa alexandrite yachilengedwe. Mabodza a Corundum ndiofala kwambiri.
Njira ya Czochralski (kutulutsa)
Njira ya Czochralski ndi njira yakukula kwa kristalo yomwe imagwiritsidwa ntchito popanga makhiristo amodzi a semiconductors (monga silicon, germanium ndi gallium arsenide), zitsulo (monga palladium, platinamu, siliva, golide), mchere ndi miyala yamtengo wapatali. Njirayi imatchedwa dzina la wasayansi waku Poland, Jan Czochralski, yemwe adayambitsa njirayi mu 1915 pophunzira kuchuluka kwa zitsulo.
Anatulukira zimenezi mwamwayi, pamene ankafufuza mmene zitsulo zimaonekera, m’malo moti asunse cholembera mu inki, anachita zimenezi mu malata osungunuka n’kufufuza ulusi wa malata, womwe pambuyo pake unasanduka kristalo umodzi.
Ntchito yofunika kwambiri ingakhale kukula kwa ma ingots akuluakulu a cylindrical kapena magawo a silicon imodzi ya crystal yomwe imagwiritsidwa ntchito pamakampani opanga zamagetsi kuti apange zida za semiconductor monga mabwalo ophatikizika.
Ma semiconductors ena monga gallium arsenide amathanso kukulitsidwa ndi njira iyi, ngakhale kuti kachulukidwe kakang'ono pankhaniyi atha kupezeka pogwiritsa ntchito njira za Bridgman-Stockbarger.
Synthetic alexandrite - Czochralski
Fomula: BeAl2O4:Cr3+
Crystal system: orthorhombic
Kulimba (Mohs): 8.5
Kuchuluka: 3.7
Refractive index: 1.741-1.75
Kubalalika: 0.015
Kuphatikizidwa: zakudya zaulere. (kusankha kofunikira kuchokera ku alexrite yachilengedwe: nkhungu, ming'alu, mabowo, ma multiphase inclusions, quartz, biotite, fluorite)
Siyani Mumakonda