HPHT tsim hluavtaws pob zeb diamond part 1

Ntuj pob zeb diamond muaj kev tawv heev thiab tsis txaus ntseeg, sib txuas cov hniav nyiaj hniav kub thiab muaj nqi Industrial. Tab sis cov bottkenck ntawm ntuj pob zeb diamond ntau lawm tsis tawg kom txog thaum nruab nrab xyoo pua 20} (HPHT) "

 

HPHT sawv rau qhov kub thiab txias thiab kev ua haujlwm siab tsim tshuab

 

Ntu Ib: Txoj Cai Tseem Ceeb

Lub ntsiab lus ntawm HPHT thev naus laus zis, uas tau replication "pob zeb diamond tiam" ntawm lub ntiaj teb kev tsim cov kab noj hniav thiab txhawb kev hloov pauv ntawm cov carbon chaw rau pob zeb diamond.

• Ntuj tsim bentermark: ntuj diamonds yog yug los ntawm qhov tob ntawm 150-200 Qib C thiab siab ntawm 4.5-6 GPA (kwv yees li 45000 rau 60000 zaus Cov pa roj carbon atoms yog teem rau hauv cov cubic lattice rau daim ntawv pob zeb diamond hauv qhov chaw no.

• Thermodynamics tseem ceeb logic: cov pa roj carbon monase tau qhia tau tias nyob rau hauv kev kub siab thiab kub, thiab pob zeb diamond yog qhov ruaj khov. Lub hom phiaj tseem ceeb ntawm HPHT cov cuab yeej yog los ua qhov chaw zoo "thiab txhawb kev taw qhia hloov dua siab tshiab ntawm cov pa roj carbon ntau (xws li graphite)

 

 

Tshooj 2: Cov ntsiab lus tseem ceeb -

Peb txoj kev ua ke ntawm HPHT cov khoom siv
HPHT cov cuab yeej ua tiav cov xwm txheej huab los ntawm "NEEG KHO TSHUAB KAV+hluav taws xob cua sov", thiab cov kab thev naus laus zis thev naus laus zis muaj qhov tseem ceeb tshaj tawm qhov sib txawv vim cov txheej txheem sib txawv.

 

1. Ob Sided Nias: Thaum pib ua lag luam lub zog tseem ceeb

• Lub tsev: 2 Tungsten carbide anvil blocks rau kev txheeb ze siab, kav raj ua cua kub.
• Nta: Cov qauv yooj yooj yim, tus nqi qis, tab sis tsis sib xws faib, tsis tuaj yeem tsim cov muaju loj ib leeg.
• Tam sim no muab tso tseg:Mas siv rau kev tsim cov khoom me me -} qhov chaw muaj cov khoom siv ntawm pob zeb diamond micro pob zeb diamond (PCYCRYSTALLINE.

 

2. Rau ib sab saum toj xovxwm tshuab: qhov tseem ceeb ntawm kev lag luam tam sim no (coj los ntawm Suav teb)

• Lub tsev: Rau cov thooj kheej kheej kheej kheej tsav lub tungsten carbide top rauj, uas squeezes lub cubic siab nruab nrab (Yelaiishi) los ntawm rau cov lus qhia, ua tiav cov cua sov siab thiab cov cua sov.
• Cov ntsiab lus zoo: uniform siab faib, loj kab ke ntim, haum rau kev lag luam huab hwm loj (lub Tuam Txhab / tuam txhab loj nyias muaju).

 

Yooj Yim Workflow:

• a. Los Ua Ke: Cov Khoom Siv Carbon Source (High {
• b. Nias: rau rauj yog synchronously thawb rau pem hauv ntej, sib sau lub siab lim dej zoo li 5-6 gpa sab hauv chav;
• c. Cua sov: lub electrode thiab rhuab rau saum 1400℃c kom yaj cov catalyst;
• d. Kev loj hlob: Cov catalyst dissolves graphite thiab precipitates pob zeb diamond ntawm lub Noob Crystal;
• e. Crystallization: Tshem cov khoom tiav tom qab txias thiab txo lub siab.

 

3. Splitting pob / multing- Faceted nias tshuab: Tshwj xeeb rau kev txiav- ntug kev tshawb fawb scientific.

• Lub tsev: 8 lossis ntau dua qhov thaiv cov pob txha caj qaum thiab nyem cov npoo npoo thiab nyem cov kheej kheej kab noj hniav.
• Nta: Cov khoom siv hluav taws xob ntau tshaj plaws ntawm cov dej siab qub thiab muaj zog yoog tau ntawm lub chamber, tab sis cov khoom siv khoom siv tsis tshua muaj siab (hauv kaum tawm lab).
• Muab tso rau: Siv rau kev txiav - ntug kev tshawb nrhiav ntawm cov ntaub ntawv loj heev thiab cov khoom lag luam tshwj xeeb).

 

 

Rau ib nrab ntawm kev sib koom ntawm cov txheej txheem thiab cov txheej txheem ntawm HPHT kev tsim hluavtaws hluavtaws, thov txuas ntxiv kom them sai sai rau lub vev xaib no. Ua tsaug rau koj txoj kev txhawb nqa.