Izolo, uZhang waselebhu ungikhonondile futhi ngokuthi idatha yokuhlolwa kwesampula ebukhali yayihlala ingaguquguquki. Ngamshaya ehlombe ngathi, “Mfowethu, njengososayensi bezinto zokwakha, asikwazi ukubheka nje amaphepha edatha; kufanele singcolise izandla zethu futhi siqonde izici zalezi zimpuphu ezincane ze-alumina ezimhlophe ezihlanganisiwe.” Lokhu kuyiqiniso; njengoba nje umpheki onolwazi azi izinga lokushisa elifanele lokupheka, thina abahloli kudingeka “sibe abangane” nalezi zimpuphu ezimhlophe ezibonakala zivamile kuqala.
I-alumina micropowder emhlophe ehlanganisiwe yaziwa embonini njengohlobo lwekristalui-aluminium oxide, enobunzima be-Mohs obungu-9, obulandela idayimane kuphela. Kodwa uzobe unephutha uma ubuphatha njengenye into eqinile. Ngenyanga edlule, sithole amaqoqo amathathu amasampula avela kubakhiqizi abahlukene. Wonke ayebukeka njengempuphu emhlophe njengeqhwa, kodwa ngaphansi kwe-microscope ye-electron, ngalinye lalinezici zalo—ezinye izinhlayiya zazinemiphetho ebukhali njengezingcezu zengilazi eziphukile, kanti ezinye zazibushelelezi njengesihlabathi esihle sasebhishi. Lokhu kuholela enkingeni yokuqala: ukuhlolwa kobunzima akuyona umdlalo olula wezinombolo.
Ngokuvamile sisebenzisa isihloli sokuqina kwe-micro, lapho ucindezela khona i-indenter phansi bese idatha iphuma. Kodwa kunezimo ezihlukile: uma ijubane lokulayisha lishesha kakhulu, izinhlayiya eziqhekekayo zingase ziqhekeke ngokuzumayo; uma umthwalo ulula kakhulu, ngeke ulinganise ubulukhuni bangempela. Ngesinye isikhathi, ngivivinye ngamabomu isampula efanayo ngamanani amabili ahlukene, futhi imiphumela yahluka ngamayunithi okuqina angu-0.8 Mohs agcwele. Kufana nokuthinta ikhabe ngama-knuckles akho; amandla amaningi bese uliqhekeza, amancane kakhulu futhi awukwazi ukubona ukuthi livuthiwe yini. Ngakho-ke manje, ngaphambi kokuhlola, kufanele "silungise" amasampula endaweni yokushisa nomswakama engaguquki amahora angama-24 ukuze siwavumele avumelane "nokushisa" kwelebhu.
Ngokuphathelene nokuhlolwa kokumelana nokuguguleka, lokho kuwumsebenzi wobuciko onekhono kakhulu. Indlela evamile ukusebenzisa isondo lerabha elijwayelekile ukuhlikihla isampula ngaphansi kwengcindezi engaguquki nokukala ukuguguleka. Kodwa empeleni, ngithole ukuthi ukwanda ngakunye okungu-10% komswakama wendawo kungabangela ukuguquguquka okungaphezu kuka-5% kwisilinganiso sokuguguleka. Ngonyaka odlule ngesikhathi semvula, isethi yokuhlolwa ephindaphindwe izikhathi ezinhlanu yabonisa idatha ehlakazekile kakhulu, futhi ekugcineni sathola ukuthi kungenxa yokuthi ukususwa komswakama kwe-air conditioner kwakungasebenzi kahle. Umphathi wami usho into engisayikhumbula namanje: “Isimo sezulu esingaphandle kwefasitela lelebhu naso siyingxenye yemingcele yokuhlola.”
Okuthakazelisa nakakhulu ithonya lokuma kwezinhlayiya. Lezo zinhlayiya ezincane ezine-engile ebukhali ziyaguga ngokushesha ngaphansi kwemithwalo ephansi—njengommese obukhali kodwa obuthakathaka oqhekezeka kalula lapho usika izinto eziqinile. Izinhlayiya eziyindilinga, ezakhiwe ngokukhethekile ngenqubo ethile, zibonisa ukuzinza okumangalisayo ngaphansi komthwalo ojikelezayo wesikhathi eside. Lokhu kungikhumbuza amatshe amancane aseceleni komfula eduze kwedolobha lakithi; iminyaka yokuguguleka kwezikhukhula yawenza aqine kakhulu. Ngezinye izikhathi, ubulukhuni obuphelele abufani nokuqina okufanele.
Kukhona elinye iphuzu elinganakwa kalula enkambisweni yokuhlola: ukusatshalaliswa kosayizi wezinhlayiya. Wonke umuntu ugxila kusayizi wezinhlayiya ojwayelekile, kodwa okuthinta ngempela ukumelana nokuguguleka ngokuvamile yi-10% yezinhlayiya ezicolekile kakhulu neziqinile. Zifana “namalungu akhethekile” eqembu; zimbalwa kakhulu futhi azinawo umphumela, ziningi kakhulu futhi ziphazamisa ukusebenza okuphelele. Ngesinye isikhathi, ngemva kokuhlola u-5% wempuphu ecolekile kakhulu, ukumelana nokuguguleka kweqoqo lonke lezinto zokwakha kwathuthuka ngo-30%. Lokhu kutholwa kwangenza nganconywa ngu-Old Wang isikhathi esingangenyanga emhlanganweni weqembu.
Manje, ngemva kokuhlolwa ngakunye, senginomkhuba wokuqoqa amasampula alahliwe. Ama-powder amhlophe avela kumaqoqo ahlukene empeleni anokukhanya okuhlukile kancane ngaphansi kokukhanya; amanye aluhlaza okwesibhakabhaka, amanye aphuzi. Ochwepheshe abanolwazi bathi lokhu kuwukubonakaliswa komehluko esakhiweni sekristalu, futhi lokhu kungafani kuvame ukuphawulwa njengombhalo omncane ongezansi ephepheni ledatha yethuluzi. Labo abasebenza ngezandla zabo bayazi ukuthi izinto zinokuphila kwazo; balandisa izindaba zabo ngezinguquko ezicashile.
Ekugcineni, ukuhlolai-white corundum micro-powderKufana nokwazi umuntu. Izinombolo eziku-resume (ubulukhuni, usayizi wezinhlayiya, ubumsulwa) ziwulwazi oluyisisekelo nje; ukuze uyiqonde ngempela, udinga ukubona ukusebenza kwayo ngaphansi kwezingcindezi ezahlukene (izinguquko zomthwalo), ezindaweni ezahlukene (izinguquko zokushisa nomswakama), kanye nangemva kokusetshenziswa isikhathi eside (ukuhlolwa kokukhathala). Umshini wokuhlola ukuguguleka obiza izigidi zamaRandi elabhorethri unembile kakhulu, kodwa isahlulelo sokugcina sisancike kokuhlangenwe nakho kokuthinta nokubuka—njengomshini omdala ongakwazi ukubona ukuthi yini engalungile ngomshini ngokulalela umsindo wawo.
Ngesikhathi esizayo uma ubona “Ukuqina 9, Ukumelana Okuhle Kokugqokwa” embikweni wokuhlolwa, ungase ufune ukubuza: ngaphansi kwaziphi izimo, ezandleni zikabani, futhi ngemva kokwehluleka okungaki lo mphumela “omuhle kakhulu” utholakale? Phela, lawo ma-powder amhlophe athule awakhulumi, kodwa yonke imihuzuko abayishiyayo ulimi oluqotho kakhulu.