Cov cim qhia txog kev siv cov hmoov pob zeb diamond zoo muaj xws li kev faib tawm qhov loj me ntawm cov khoom me me, cov duab ntawm cov khoom me me, kev huv, cov khoom siv lub cev thiab lwm yam, uas cuam tshuam ncaj qha rau nws cov txiaj ntsig ntawm kev siv hauv ntau yam kev lag luam (xws li kev txhuam, kev sib tsoo, kev txiav, thiab lwm yam). Cov hauv qab no yog cov cim qhia tseem ceeb thiab cov kev cai uas tau txheeb xyuas los ntawm cov txiaj ntsig tshawb nrhiav:
Cov kev faib tawm ntawm qhov loj me ntawm cov khoom me me thiab cov yam ntxwv ntawm cov khoom me me
1. Qhov loj ntawm cov khoom me me
Qhov loj me ntawm cov hmoov pob zeb diamond feem ntau yog 0.1-50 microns, thiab qhov yuav tsum tau ua rau qhov loj me ntawm cov khoom sib txawv ntau heev nyob rau hauv ntau qhov xwm txheej thov.
Kev txhuam: Xaiv 0-0.5 micron txog 6-12 micron ntawm cov hmoov me me kom txo cov khawb thiab txhim kho qhov chaw tiav 5
Kev Sib Tsoo: Hmoov me me uas loj li ntawm 5-10 microns txog 12-22 microns yog qhov tsim nyog dua rau kev ua haujlwm zoo thiab qhov zoo ntawm qhov chaw.
Kev sib tsoo zoo: 20-30 micron hmoov tuaj yeem txhim kho kev sib tsoo zoo
2. Kev piav qhia txog qhov loj ntawm cov khoom me me
D10: qhov loj me ntawm cov khoom me me sib xws ntawm 10% ntawm qhov kev faib tawm sib sau ua ke, uas qhia txog qhov sib piv ntawm cov khoom me me. Qhov sib piv ntawm cov khoom me me yuav tsum tau tswj kom tsis txhob txo qis kev sib tsoo zoo.
D50 (median diameter): sawv cev rau qhov nruab nrab ntawm cov khoom me me, uas yog qhov tseem ceeb ntawm kev faib cov khoom me me thiab cuam tshuam ncaj qha rau kev ua haujlwm zoo thiab qhov tseeb.
D95: qhov loj me ntawm cov khoom sib xws yog 95% ntawm kev faib tawm, thiab tswj cov ntsiab lus ntawm cov khoom loj (xws li D95 tshaj tus qauv yooj yim ua rau khawb ntawm cov khoom ua haujlwm).
Mv (qhov nruab nrab ntawm qhov loj ntawm cov khoom me me): cuam tshuam loj heev los ntawm cov khoom loj thiab siv los ntsuas qhov kev faib tawm ntawm qhov kawg ntxhib
3. Lub kaw lus txheem
Cov qauv thoob ntiaj teb uas siv ntau suav nrog ANSI (piv txwv li D50, D100) thiab ISO (piv txwv li ISO6106: 2016).
Qhov thib ob, cov duab ntawm cov khoom me me thiab cov yam ntxwv ntawm qhov chaw
1. Cov yam ntxwv ntawm cov duab
Kev Sib Npaug: qhov ze dua qhov sib npaug yog rau 1, qhov ntau dua cov khoom me me yog thiab qhov zoo dua qhov ua kom zoo nkauj; cov khoom me me nrog qhov sib npaug tsawg (ntau lub ces kaum) yog qhov tsim nyog dua rau electroplating hlau saws thiab lwm qhov chaw uas xav tau cov npoo ntse.
Cov khoom me me zoo li phaj: cov khoom me me uas muaj kev xa tawm ntau dua 90% suav tias yog cov khoom me me zoo li phaj, thiab qhov sib piv yuav tsum tsawg dua 10%; cov khoom me me zoo li phaj ntau dhau yuav ua rau qhov kev kuaj pom qhov loj me ntawm cov khoom me me tsis ruaj khov thiab ua rau cov nyhuv ntawm daim ntawv thov tsis ruaj khov.
Cov khoom me me zoo li hlaws dai: qhov sib piv ntawm qhov ntev thiab qhov dav ntawm cov khoom me me> 3: 1 yuav tsum tau tswj hwm nruj me ntsis, thiab qhov sib piv yuav tsum tsis pub tshaj 3%.
2. Txoj kev nrhiav cov duab
Lub tshuab tsom iav pom kev: tsim nyog rau kev soj ntsuam cov duab ntawm cov khoom me me saum 2 microns
Lub tshuab ntsuas hluav taws xob scanning (SEM): siv rau kev tshuaj xyuas morphology ntawm cov khoom me me ntawm qib nanometer.
Kev tswj hwm qhov huv thiab qhov tsis huv
1. Cov ntsiab lus tsis huv
Qhov huv ntawm pob zeb diamond yuav tsum yog> 99%, thiab cov hlau tsis huv (xws li hlau, tooj liab) thiab cov tshuaj lom neeg (sulfur, chlorine) yuav tsum raug tswj hwm qis dua 1%.
Cov khoom tsis huv ntawm cov hlau nplaum yuav tsum tsawg kom tsis txhob muaj cov nyhuv ntawm kev sib sau ua ke ntawm kev ua kom raug.
2. Kev cuam tshuam ntawm cov hlau nplaum
Pob zeb diamond purity siab yuav tsum ze rau qhov tsis yog magnetic, thiab qhov rhiab heev magnetic qhia txog cov hlau impurities seem, uas yuav tsum tau kuaj pom los ntawm electromagnetic induction method.
Cov ntsuas kev ua tau zoo ntawm lub cev
1. Kev cuam tshuam tawv
Qhov kev tiv thaiv crushing ntawm cov khoom me me yog tus cwj pwm los ntawm qhov tsis tawg (lossis lub sijhawm semi-tawg) tom qab kev sim cuam tshuam, uas cuam tshuam ncaj qha rau qhov ruaj khov ntawm cov cuab yeej sib tsoo.
2. Kev ruaj khov ntawm cua sov
Cov hmoov zoo yuav tsum tswj tau qhov ruaj khov ntawm qhov kub siab (xws li 750-1000 ℃) kom tsis txhob muaj graphite tsim lossis oxidation ua rau lub zog txo qis; feem ntau siv thermogravimetric analysis (TGA) nrhiav.
3. Kev nyuaj me me
Lub microhardness ntawm pob zeb diamond hmoov yog txog li 10000 kq / mm2, yog li nws yog qhov tsim nyog los xyuas kom meej tias muaj zog siab kom tswj tau qhov ua tau zoo ntawm kev txiav.
Cov kev cai hloov kho tau raws li daim ntawv thov 238
1. Kev sib npaug ntawm qhov loj me ntawm cov khoom me me thiab cov txiaj ntsig ntawm kev ua tiav
Cov khoom me me (xws li D95 siab) txhim kho kev sib tsoo zoo tab sis txo qhov ua tiav ntawm qhov chaw: cov khoom me me (D10 me dua) muaj qhov cuam tshuam rov qab. Kho qhov ntau thiab tsawg ntawm kev faib tawm raws li qhov xav tau.
2. Kev hloov pauv duab
Cov khoom me me ntawm cov thaiv ntau ntug yog qhov tsim nyog rau cov log sib tsoo resin; cov khoom me me spherical yog qhov tsim nyog rau kev ua kom du.
Cov txheej txheem kuaj thiab cov qauv
1. Kev tshawb nrhiav qhov loj me ntawm cov khoom me me
Laser diffraction: siv dav rau cov khoom me me hauv micron / submicron, kev ua haujlwm yooj yim thiab cov ntaub ntawv txhim khu kev qha;
Txoj kev lim dej: tsuas yog siv rau cov khoom me me tshaj 40 microns;
2. Kev nrhiav pom cov duab
Lub tshuab ntsuas duab ntawm cov khoom me me tuaj yeem ntsuas cov yam ntxwv xws li qhov sib npaug thiab txo qhov yuam kev ntawm kev soj ntsuam tes;
sau ua ke
Cov hmoov pob zeb diamond zoo yuav tsum tau tswj hwm tag nrho cov khoom me me (D10/D50/D95), cov duab ntawm cov khoom me me (puag ncig, flake lossis koob), kev huv (cov khoom tsis huv, cov khoom sib nqus), thiab cov khoom siv lub cev (lub zog, kev ruaj khov thermal). Cov chaw tsim khoom yuav tsum ua kom zoo dua cov kev teeb tsa raws li cov xwm txheej siv tshwj xeeb thiab xyuas kom zoo sib xws los ntawm cov txheej txheem xws li laser diffraction thiab electron microscopy. Thaum xaiv, cov neeg siv yuav tsum xav txog cov kev cai ua haujlwm tshwj xeeb (xws li kev ua haujlwm zoo thiab kev ua tiav) thiab phim cov cim qhia raws li qhov tsim nyog. Piv txwv li, kev ua kom raug yuav tsum tswj hwm D95 thiab kev puag ncig, thaum kev sib tsoo ntxhib tuaj yeem so cov kev cai ntawm cov duab kom txhim kho kev ua haujlwm zoo.
Cov ntsiab lus saum toj no yog rho tawm los ntawm lub network superhard materials.
Lub sijhawm tshaj tawm: Lub Rau Hli-11-2025
