Izici zethuluzi le-PCD nethuluzi lensimbi ye-tungsten

Amathuluzi okusika e-PCD anobulukhuni obuphezulu, amandla acindezelayo aphezulu, ukusebenza kahle kwe-thermal nokumelana nokugqoka, futhi angathola ukunemba okuphezulu nokusebenza kahle kwemishini yesivinini esikhulu.

Izici ezingenhla zinqunywa isimo se-crystal yedayimane.Ekristaluni yedayimane, ama-electron amane e-valence ama-athomu ekhabhoni akha amabhondi ngokwesakhiwo se-tetrahedral, futhi i-athomu yekhabhoni ngayinye yakha izibopho ezihlangene nama-athomu amane ancikene, ngaleyo ndlela akhe isakhiwo sedayimane.Lesi sakhiwo sinamandla amakhulu okubopha kanye nokuqondisa, okwenza idayimane libe lukhuni ngokwedlulele.Ngenxa yokuthi ukwakheka kwedayimane le-polycrystalline (i-PCD) kuwumzimba osikiwe wedayimane elihlanjululwe kahle elinemikhombandlela ehlukene, ubulukhuni balo nokumelana nokugqokwa kusengaphansi kwalokho kwedayimane lekristalu elilodwa naphezu kokwengezwa kwe-binder.Kodwa-ke, i-PCD sintered body is isotropic, ngakho-ke akulula ukuqhekezeka ngendiza eyodwa yokuqhekeka.

2. Umehluko ezinkomba zokusebenza

Ubulukhuni be-PCD bungafinyelela ku-8000HV, izikhathi ezingu-80~120 zalezo ze-carbide enosimende;Ngamafuphi, i-PCD inempilo ende yesevisi futhi ithuthukisa ukusebenza kahle kokukhiqiza.

I-thermal conductivity ye-PCD yi-700W/mK, izikhathi ezingu-1.5 ~ 9 zaleyo ye-carbide enosimende, futhi ephakeme nakakhulu kune-PCBN nethusi, ngakho-ke ukudluliswa kokushisa kwamathuluzi e-PCD kuyashesha;

I-coefficient ye-friction ye-PCD ngokuvamile ingu-0.1~0.3 kuphela (i-coefficient ye-friction ye-carbide enosimende ingu-0.4~1), ngakho amathuluzi e-PCD anganciphisa kakhulu amandla okusika;

I-coefficient yokwanda okushisayo kwe-PCD yi-0.9 × 10 ^-6～1.18 × 10 ^ - 6 kuphela, okuyi-1/5 kuphela ye-carbide enosimende, ngakho-ke ukuguqulwa okushisayo kwethuluzi le-PCD kuncane futhi ukunemba kwemishini kuphezulu;

Ukuhlobana phakathi kwethuluzi le-PCD nezinto ezingezona zensimbi zensimbi nezingezona ezensimbi kuncane kakhulu, futhi ama-chips akulula ukubopha ithiphu lethuluzi ukuze akhe idiphozithi ye-chip ngesikhathi sokucutshungulwa.