Cov txheej txheem ntau lawm ntawm polarizing microscope lub teeb nplooj ntawv
Thaum soj ntsuam nrog lub tshuab ntsuas polarizing, cov qauv yuav tsum tau ua rau hauv cov ntawv polished tsim nyog, uas yog hu ua daim ntawv teeb. Cov txheej txheem ntau lawm yog raws li nram no:
(1) Cov qauv xaiv: Xaiv cov qauv piv txwv raws li lub hom phiaj ntawm kev soj ntsuam thiab kev tsom xam, txiav rau hauv 10 × 10 × 10mm qauv blocks, thiab ntxuav lawv.
(2) Mounting lossis kua nplaum nkag mus: Qee cov qauv nrog qhov me me yuav tsum tau muab tso rau; cov qauv nrog xoob lossis ntau qhov pores yuav tsum tau ua ntej.
(3) Coarse sib tsoo: Xaiv qhov flatter sab ntawm tus qauv, muab tso rau ntawm ib tug grinder thiab siv coarse xuab zeb kom du nto kom huv si li qhov tsos thiab tshem tawm cov npoo thiab cov ces kaum.
(4) Kev sib tsoo zoo: Sib tsoo nrog cov xuab zeb zoo kom txog thaum tag nrho cov khoom seem ntawm kev sib tsoo raug tshem tawm.
(5) Kev sib tsoo zoo: Sib tsoo nrog cov xuab zeb zoo kom txog thaum lub npoo tiaj tiaj, muab tso rau hauv qhov chaw ci thiab saib xyuas kom pom tias qhov kev xav tsis zoo.
(6) Polishing: Muab cov qauv tso rau ntawm lub tshuab polishing, ntxiv abrasive paste (polishing hmoov) thiab txhuam kom txog thaum lub ntsej muag ntawm cov qauv ci ntsa iab thiab tsis muaj qhov pom tseeb kos nyob rau hauv lub tsom iav tsom iav.
(7) Kos npe: Cov qauv hauv av yuav tsum raug suav thiab sau kom meej meej qhov chaw thiab npe.
(8) Erosion: Xaiv txoj kev yaig tsim nyog thiab kev yaig raws li lub hom phiaj ntawm kev soj ntsuam thiab kev soj ntsuam cov cai, thiab erodes tus qauv.
Thaum nws yog ib qho tsim nyog los ua qhov kev ntsuam xyuas microstructural nyob rau hauv lub teeb kis tau tus mob thiab lub teeb pom kev nyob rau tib lub sijhawm, cov qauv yog ua rau hauv cov khoom siv kho qhov muag los yog txawm tias ultra-optical nyias ntu (<0.02mm). When preparing optical thin sections, first grind the sample into a thin section with a thickness of 0.03mm without adding a cover glass, and then polish the surface of the finely ground section on a polishing machine.
