Ulwazi Losayizi Wezinhlayiya Zedayimane

Izinto zedayimane, njengezinto ezithuthukisiwe zempuphu, azichazwa nje kuphela ngokwakheka kwamakhemikhali, kodwa futhi nangezakhiwo eziningi zomzimba. Lokhu kufaka phakathi usayizi wezinhlayiya, isimo sezinhlayiya, indawo ethile ebusweni, isakhiwo sezimbobo, izici zokushaja kagesi, kanye nobuningi kanye nokugeleza kwamanzi. Phakathi kwalokhu, ukusatshalaliswa kosayizi wezinhlayiya kungenye yezindlela ezibaluleke kakhulu ku Impuphu yedayimane ukukhiqizwa kanye nokusetshenziswa.

1. Ukuhlukaniswa Kobukhulu Bezinhlayiya Zedayimane

Izinhlayiya zedayimane ngokuvamile zingahlukaniswa zibe amabanga osayizi alandelayo:

• Izinhlayiya ze-nanometer (1–100 nm)
• Izinhlayiya ze-Submicron (0.1–1 μm)
• Izinhlayiya ze-Micron (1–100 μm)
• Izinhlayiya ezimahhadlahhadla (100–1000 μm)

Ububanzi bosayizi ngamunye busetshenziselwa izinhlelo zokusebenza ezahlukene zezimboni, njengokupholisha ngokunemba, ukugaya, ukusika, kanye nokuqinisa okuhlanganisiwe.

2. Izindlela Zokuhlola Usayizi Wezinhlayiyana Ezivamile

Kunezindlela eziningana ezisetshenziswa kabanzi zokulinganisa usayizi wezinhlayiya ze-diamond powder:

1. Indlela Yokuhlukaniswa Kwe-Laser(kusebenza kuma-nano, ama-micron, kanye nezinhlayiya ezinkulu)
2. Ukusabalalisa Ukukhanya Okunamandla (i-DLS)(ikakhulukazi ngezinhlayiya ezincane)
3. Ukuhlaziywa Kwesithombe Esiqinile Nesiguquguqukayo(ububanzi be-micron, futhi buhlinzeka ngolwazi lokuma kwezinhlayiya)
4. Izindlela Zokudonsa Amandla Adonsela Phansi kanye Nezokudonsa I-Centrifugal(izinhlayiya ze-micron kanye ne-nano)
5. Ikhawuntara Ye-Coulter (Indlela Yokumelana Nogesi)(izinhlayiya ze-micron)
6. I-Electron Microscopy (SEM/TEM)(ukubonwa kwesilinganiso se-nano kanye ne-micron)
7. Indlela ye-Ultrasonic(izinhlayiya ze-micron)
8. Indlela Yokuvunyelwa Komoya(ububanzi be-micron, usayizi wezinhlayiya omaphakathi)
9. Ukuhlaziywa kwesihlungo(ngokuvamile ngezinhlayiya ezinkulu kuno-38 μm)

Phakathi kwalezi, izindlela ezisetshenziswa kakhulu ekukhiqizeni iBoreas yilezi: ukuhlaziywa kwe-laser diffraction, ukusabalala kokukhanya okuguquguqukayo, futhi ukuhlaziywa kwesithombe se-optical/microscopic.

3. Iyini i-D50 (Usayizi Wezinhlayiyana Eziphakathi)?

D50ibhekisela kububanzi bezinhlayiya lapho kufinyelelwa khona u-50% wobukhulu bezinhlayiya ezihlanganisiwe. Yaziwa nangokuthi usayizi wezinhlayiya eziphakathi.

Isibonelo, uma isampula ine D50 = 5 μm, kusho ujuthi:

• Ama-50% ezinhlayiya makhulu kuno-5 μm
• Ama-50% ezinhlayiya zincane kune-5 μm

I-D50 ingenye yezinkomba ezibaluleke kakhulu nezisetshenziswa kabanzi ekukhiqizweni nasekusetshenzisweni kwempuphu yedayimane, futhi ivame ukusetshenziselwa ukumelela usayizi wezinhlayiya omaphakathikwezinto ezibonakalayo.

4. Kuyini i-D97 (Inkomba Yezinhlayiya Eziyingxenyana)?

D97ibhekisela kusayizi wezinhlayiya lapho kufinyelelwa khona u-97% wokusatshalaliswa okuqongelelekayo.

Lokhu kusho:

• Ama-97% ezinhlayiya mancane kune-D97
• Ama-3% ezinhlayiya makhulu kune-D97

I-D97 ivame ukusetshenziswa ukuhlola ukusatshalaliswa okuqinileimpuphu yedayimane. Embonini, amanye amakhasimende nawo adinga D95, D97, noma D98ukulawula ngokuqinile ukuba khona kwezinhlayiya ezinkulu kakhulu.

5. Amapharamitha Ayisihluthulelo Ekuhlaziyweni Kokusatshalaliswa Kosayizi Wezinhlayiyana

Ijika eliphelele lokusabalalisa usayizi wezinhlayiya livame ukufaka amapharamitha alandelayo:

• Isilinganiso (Usayizi wezinhlayiya ezimaphakathi):Usayizi ojwayelekile wesistimu
• Okuphakathi (D50):Inani eliphakathi lokusatshalaliswa kwezinhlayiya
• Imodi (Usayizi Ophakeme):Usayizi wezinhlayiya onemvamisa ephezulu kakhulu
• D10:Usayizi wezinhlayiya lapho kufinyelelwa khona u-10% wokusatshalaliswa okuqongelelekayo
• D50:Usayizi wezinhlayiya lapho kufinyelelwa khona u-50% wokusatshalaliswa okuqongelelekayo
• I-D90:Usayizi wezinhlayiya lapho kufinyelelwa khona u-90% wokusatshalaliswa okuqongelelekayo

Lezi zinhlaka zihlangene zinikeza ukuqonda okugcwele kobubanzi bokusatshalaliswa kwezinhlayiya, ukufana, kanye nokuvumelana.

6. Isimiso Sokusabalalisa Usayizi Wezinhlayiyana (D10 / D50 / D90)

Ku-curve evamile yokusatshalaliswa kosayizi wezinhlayiya:

• D10imelela ukuphela okuhle kokusatshalaliswa
• D50imelela iphuzu eliphakathi nendawo
• D90imelela ukuphela okuqinile kokusatshalaliswa

Ubudlelwano phakathi kwe-D10, D50, kanye ne-D90 busetshenziswa kabanzi ukuhlola ukufana kanye nekhwalithi yokulinganisa yempuphu yedayimane.

Ukuhlaziywa kosayizi wezinhlayiya kuyipharamitha ebalulekile yokulawula ikhwalithi yemikhiqizo yempuphu yedayimane. Ukulinganiswa okunembile kanye nokuchazwa kwezinkomba ezifana ne-D10, D50, kanye ne-D90 kuqinisekisa ukusebenza okulinganayo ekupholiseni, ekugayeni, kanye nasekusetshenzisweni komshini ngokunemba.