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xov xwm

Hauv cov lus yooj yim tshaj plaws, lab cog pob zeb diamond yog pob zeb diamond uas tau tsim los ntawm tib neeg es tsis tau tawm ntawm lub ntiaj teb. Yog tias nws yooj yim heev, koj yuav xav tias yog vim li cas thiaj li muaj ib kab lus tag nrho hauv qab kab lus no. Qhov tsis yooj yim tshwm sim los ntawm qhov tseeb tias ntau ntau cov lus sib txawv tau siv los piav qhia txog lab cov pob zeb diamond thiab lawv cov kwv tij, thiab tsis yog txhua tus siv cov lus no nyob rau tib txoj kev. Yog li, cia pib nrog qee cov lus siv.

Khoom cua. Nkag siab txog lo lus no kom raug yog qhov tseem ceeb uas qhib qhov lus nug tag nrho no. Synthetic tuaj yeem txhais tau cov khoom siv cuav lossis txawm siv ua cuav. Cov hluavtaws kuj tseem txhais tau tias yog neeg tsim, theej, tsis muaj, lossis txawm yws. Tab sis, hauv cov ntsiab lus no, peb txhais li cas thaum peb hais "pob zeb diamond hluavtaws"?

Hauv lub ntiaj teb gemological, hluavtaws yog lub sij hawm kev tshaj lij. Thaum hais lus ntawm kev tshaj lij, lub pov haum hluavtaws yog tib neeg tsim muaju nrog tib cov qauv siv lead ua thiab cov tshuaj lom neeg muaj pes tsawg leeg yog lub pov haum tshwj xeeb uas tau tsim. Yog li, "pob zeb diamond hluavtaws" muaj cov qauv siv lead ua zoo ib yam thiab cov tshuaj lom neeg zoo li lub pob zeb ntuj. Tib yam tsis tuaj yeem hais tau ntawm ntau lub ntsej muag cuav lossis cov pov haum cuav uas feem ntau, tsis raug, tau piav qhia ua pob zeb diamond hluavtaws. Cov lus tsis sib xws no tau nkag siab meej meej txog lo lus "hluavtaws" txhais tau li cas, thiab vim li cas cov neeg tsim khoom siv pob zeb diamond nyiam tsim cov "lab tsim" dhau ntawm "hluavtaws."

Txhawm rau kom txaus siab rau qhov no siab, nws yuav pab kom nkag siab me ntsis txog kev yuav ua li cas (lab) zus pob zeb diamond. Muaj ob hom kev kawm kom loj ntxiv cov pob zeb diamond siv lead ua. Qhov xub thawj thiab qub tshaj plaws yog txheej txheem Kev Txhim Kho Siab Tshaj Plaws (High pressure High Temperature (HPHT)). Cov txheej txheem no pib nrog lub noob ntawm cov khoom siv pob zeb diamond thiab loj hlob lub pob zeb diamond puv ib yam li qhov xwm puas nyob hauv siab thiab qhov kub thiab txias.

Txoj hauv kev tshiab tshaj plaws los cog cov pob zeb hluavtaws yog cov txheej txheem chemical Vapor Deposition (CVD). Hauv cov txheej txheem CVD, ib chav xaj yog ntim nrog cov pa roj nplua nuj vapor. Cov pa roj carbon atoms yog muab rho tawm los ntawm cov roj thiab tso rau ntawm wafer ntawm cov pob zeb diamond siv uas tsim cov qauv siv lead ua raws li lub pov haum loj hlob txheej los ntawm txheej. Koj tuaj yeem kawm paub ntau ntxiv li cas (lab) zus diamonds ua los ntawm peb cov ntawv tseem ceeb ntawm cov txheej txheem sib txawv. Qhov tseem ceeb nqa mus rau tam sim no yog tias ob qho ntawm cov txheej txheem no yog cov thev naus laus zis siab heev uas tsim cov khoom siv hluav taws xob nrog cov qauv zoo ib yam tshuaj lom neeg thiab cov khoom kho qhov muag zoo li lub pob zeb ntuj. Tam sim no, peb los sib piv (lab) zus pob zeb diamond rau qee qhov lwm lub pov haum uas koj yuav tau hnov.

(Lab) Lub Cev Pob Txha Sib Piv Piv nrog Pob Zeb Diamond Simulants

Thaum twg hluavtaws tsis yog hluavtaws? Lo lus teb yog thaum nws yog ib qhov simulant. Simulants yog lub pov haum uas zoo li cov tiag tiag, lub pov haum ntuj tab sis ua tau lwm cov khoom. Yog li, txiv ntoo ntshiab lossis dawb thiaj li tuaj yeem yog pob zeb diamond simulant vim nws zoo li pob zeb diamond. Hais tias sapphire dawb yuav yog ntuj lossis, ntawm no yog qhov ua kom yuam kev, hluavtaws sapphire. Tus yuam sij rau kev nkag siab txog qhov teeb meem simulant tsis yog li cas lub pov haum tau ua (ntuj vs hluavtaws), tab sis hais tias nws yog hloov pauv uas zoo li lwm lub pov haum. Yog li, peb tuaj yeem hais tias tus txiv neej-ua dawb sapphire yog "sapphire hluavtaws" lossis tias nws tuaj yeem siv ua "pob zeb diamond simulant," tab sis nws yuav tsis muaj tseeb hais tias nws yog "pob zeb diamond hluavtaws" vim tias nws tsis muaj cov qauv chemical zoo ib yam li pob zeb diamond.

Lub sapphire dawb, ua lag luam thiab tshaj tawm xws li dawb sapphire, yog lub sapphire. Tab sis, yog tias nws siv nyob rau hauv qhov chaw ntawm lub pob zeb diamond, ces nws yog pob zeb diamond simulant. Simulant gems, dua, tau sim ua ntsiag to lwm lub pov haum, thiab yog tias lawv tsis tau qhia tawm meej meej raws li simulants lawv suav tias yog fakes. Lub pob zeb dawb tsis yog, los ntawm xwm, tus cuav (qhov tseeb nws yog lub pov haum zoo nkauj thiab muaj txiaj ntsig). Tab sis yog nws tuaj muag li pob zeb diamond, nws dhau los ua qhov cuav. Feem ntau lub pov haum simulants sim ua qog cov pob zeb diamond, tab sis tseem muaj cov simulants rau lwm lub pov haum muaj nuj nqis (sapphires, rubies, thiab lwm yam).

Nov yog qee qhov nrov tshaj pob zeb diamond simulants.

  • Synthetic Rutile tau qhia nyob rau xyoo 1940s thiab siv los ua kev ua kom zoo thaum ua pob zeb diamond thaum ntxov.
  • Tom ntej no ntawm tus txiv neej-ua pob zeb diamond simulant ua si yog Strontium Titanate. Cov khoom siv no tau dhau los ua kev sim tawm pob zeb diamond xyoo 1950.
  • Xyoo 1960 coj kev tsim kho ntawm ob qhov kev sim: Yttrium Aluminium Garnet (YAG) thiab Gadolinium Gallium Garnet (GGG). Ob qho tib si yog neeg tsim pob zeb diamond simulants. Nws yog ib qho tseem ceeb uas yuav rov hais dua ntawm no vim tias cov khoom siv tuaj yeem siv cov pob zeb diamond simulant tsis ua rau nws ua "cuav" lossis qhov tsis zoo. YAG, piv txwv, yog siv lead ua zoo heev uas nyob hauv plawv ntawm peb lub tshuab txais laser.
  • Cov pob zeb diamond uas nrov tshaj plaws los txog niaj hnub no yog hluavtaws Cubic Zirconia (CZ). Nws yog pheej yig los tsim thiab txim taws ci ntsa iab heev. Nws yog ib qho piv txwv zoo ntawm cov khoom siv hluavtaws zeb uas yog lub pob zeb diamond simulant. CZs yog feem ntau heev, yuam kev, xa mus rau li cov pob zeb hluavtaws.
  • Synthetic Moissanite tseem tsim tau qee qhov tsis meej pem. Nws yog txiv neej-ua, lub pov haum hluavtaws uas yeej muaj qee yam khoom zoo li pob zeb diamond. Piv txwv li, cov pob zeb diamond yog qhov tshwj xeeb tshaj yog hloov ntawm tshav kub, thiab yog li yog Moissanite. Qhov no yog qhov tseem ceeb vim tias cov neeg nyiam pob zeb diamond tshaj plaws siv cov tshav kub tawg tuaj yeem kuaj yog tias lub pov haum yog pob zeb diamond. Txawm li cas los xij, Moissanite muaj cov qauv ua qauv chemical txawv txawv dua li pob zeb diamond thiab cov khoom sib txawv. Piv txwv li, Moissanite yog ob qhov qub-rov qab zoo dua hos cov pob zeb diamond yog qhov rov ua zoo nkaus xwb.

Txij li thaum Moissanite cov kev ntsuam xyuas zoo li pob zeb diamond (vim nws cov cua sov ua kom tawg), tib neeg xav tias nws yog pob zeb diamond lossis hluavtaws pob zeb. Txawm li cas los xij, vim nws tsis muaj cov qauv siv lead ua zoo ib yam lossis tshuaj lom neeg ntawm pob zeb diamond, nws tsis yog lub pob zeb hluavtaws. Moissanite yog pob zeb diamond simulant.

Tej zaum nws yuav ua tseeb nyob rau tam sim no yog vim li cas lo lus "hluavtaws" yog li tsis meej pem hauv cov ntsiab lus no. Nrog Moissanite peb muaj lub pov haum hluavtaws uas zoo nkaus li thiab ua ntau yam zoo li pob zeb diamond tab sis yuav tsum tsis txhob muab hu ua "pob zeb diamond hluavtaws." Vim tias qhov no, nrog rau feem ntau ntawm cov kev lag luam cov hniav nyiaj hniav kub, peb nyiam siv cov lo lus "lab cog pob zeb diamond" xa mus rau lub pob zeb diamond hluavtaws tseeb uas sib koom nrog cov khoom sib luag zoo li lub pob zeb ntuj, thiab peb nyiam kom tsis txhob siv lo lus "hluavtaws pob zeb diamond ”tau muab ntau npaum li cas tsis meej pem nws tuaj yeem tsim.

Muaj lwm lub pob zeb diamond simulant uas ua rau muaj kev kub ntxhov ntau. Pob zeb diamond coated Cubic Zirconia (CZ) lub pov haum yog tsim los siv tib yam Cov Khoom Siv Vapor Deposition (CVD) thev naus laus zis uas yog siv los tsim cov khoom cog hauv cov pob zeb txuas. Nrog cov pob zeb diamond coated CZs, txheej txheej nyias heev ntawm cov khoom cua pob zeb diamond ntxiv tau muab tso rau sab saum toj ntawm CZ. Nanocrystalline pob zeb diamond hais tsuas yog li 30 txog 50 nanometer tuab. Ntawd yog li 30 rau 50 atoms tuab lossis 0.00003mm. Los yog, nws yuav tsum tau hais, tsis tshua muaj neeg nyias. CVD pob zeb diamond coated Cubic Zirconia tsis yog cov pob zeb hluavtaws. Lawv muaj yeeb koob Cubic Zirconia pob zeb diamond simulants nkaus xwb. Lawv tsis muaj tib lub hardness los yog cov qauv siv lead ua ntawm lub pob zeb diamond. Zoo li qee qhov muag tsom iav, CVD pob zeb diamond coated Cubic Zirconia muaj cov pob zeb diamond kawg nkaus nkaus xwb. Txawm li cas los xij, qhov no tsis txwv qee tus neeg ua lag luam tsis zoo ntawm kev hu mus rau lawv cov pob zeb diamond hluavtaws. Zaum no, koj paub zoo lawm.

(Lab) Tshawb Pob Tseg Sib Piv Nrog Ntuj Diamonds

Yog li, tam sim no uas peb paub dab tsi lab lab tawg yog tsis, nws yog lub sijhawm los tham txog seb lawv yog dab tsi. Yuav ua li cas (lab) zus pob zeb diamond piv rau ntuj diamonds? Cov lus teb yog raws li nyob rau hauv lub ntsiab txhais ntawm hluavtaws. Raws li peb tau kawm, lub pob zeb hluavtaws muaj qhov qub qauv siv lead ua thiab tshuaj lom neeg hauv lub cev zoo li lub pob zeb ntuj. Yog li ntawd, lawv saib zoo ib yam li lub pov haum ntuj. Lawv muaj sib txhuam tib yam. Lawv muaj qhov nyuaj ib yam. Sab ntawm ib sab, Kev kuaj pob zeb diamond ntsia thiab ua zoo nkaus li cov pob zeb ntuj.

Qhov sib txawv ntawm lub ntuj thiab ib lub lab loj zus pob zeb diamond kav los ntawm lawv tau ua li cas. Lub pov haum lab cog cov txiv neej tsim nyob rau hauv ib chav kuaj thaum lub ntuj pob zeb tsim nyob hauv ntiaj teb. Xwm tsis yog tswj tau, tsis muaj ib puag ncig, thiab cov txheej txheem ntuj sib txawv muaj ntau. Yog li, cov txiaj ntsig tsis zoo tag nrho. Muaj ntau ntau hom kev suav thiab cov qauv txheej txheem uas qhov ua lub pov haum tau muab.

(Lab) tsim cov pob zeb diamond, ntawm qhov tod tes, yog tsim hauv qhov chaw tswj hwm. Lawv muaj cov cim ntawm kev tswj kev ua haujlwm uas tsis zoo li xwm txheej. Tsis tas li ntawd, tib neeg kev siv zog tsis zoo tag nrho thiab lawv tawm lawv tus kheej lub khoo thiab cov lus qhia tias tib neeg ua lub pov haum. Cov hom ntawm kev suav thiab kev hloov pauv yam me me hauv cov qauv siv lead ua yog ib qho ntawm txoj kev sib txawv ntawm cov chaw kuaj thiab cov pob zeb loj. Koj tuaj yeem kawm paub ntau ntxiv txog yuav ua li cas qhia yog tias pob zeb diamond yog lab kuaj lossis ntuj los ntawm peb cov ntawv tseem ceeb ntawm cov ntawv.

FJU Qeb: Qhov Lab Ua Ntej Pob Zeb Diamond


Sijhawm Tshaj Tawm: Plaub Hlis-08-2021