Ukubaluleka Kokuhlaziywa Kokwakheka Kwamakhemikhali ku-Metallurgy
I-Metallurgy, isayensi nobuchwepheshe bezinsimbi, ibilokhu iyitshe lesisekelo sentuthuko yabantu kusukela ekuqaleni kwempucuko. Kusukela ekutholakaleni kwethusi nethusi kuya kuma-superalloy ayinkimbinkimbi asetshenziswa ezinjinini zejethi zanamuhla, izinsimbi ziyaqhubeka nokudlala indima ebalulekile ekuthuthukiseni umphakathi. Okubalulekile emkhakheni we-metallurgy ukuhlaziywa kokwakheka kwamakhemikhali, okubaluleke kakhulu ekunqumeni izakhiwo zezinto ezibonakalayo, ukuqinisekisa ukulawulwa kwekhwalithi, ukwenza ngcono izinqubo, kanye nokuthuthukisa ama-alloy amasha.
Indima Eyisisekelo Ekuqondeni Izakhiwo Zezinto Ezibonakalayo
Ukwakheka kwamakhemikhali kwensimbi noma i-alloy kuyisisekelo sezakhiwo zayo zomzimba nezemishini. Izinsimbi azitholakali zihlanzekile ngokwemvelo; zivame ukuhlanganiswa nezinye izinto ezingathonya kakhulu izici zazo. Isibonelo, ukwengeza ikhabhoni ensimbini kukhiqiza insimbi, into enamandla kakhulu futhi eguquguqukayo kunensimbi emsulwa. Isilinganiso esinembile sekhabhoni nezinye izinto ezixubayo njenge-chromium, i-nickel, ne-molybdenum sinquma ubulukhuni, ukuguquguquka, amandla okuthamba, ukumelana nokugqwala, kanye nokuzinza kokushisa kwensimbi.
Ukuhlaziywa kokwakheka kwamakhemikhali kunikeza ukuhlukaniswa okuningiliziwe kwalezi zinto eziyisisekelo kanye nobukhulu bazo. Ngokusebenzisa amasu afana ne-spectroscopy, i-X-ray fluorescence (XRF), ukuhlaziywa kokushiswa, kanye ne-mass spectrometry, ochwepheshe be-metallurgist bangahlola ngokunembile ukwakheka kwezinsimbi futhi babikezele ukuziphatha kwazo ngaphansi kwezimo ezahlukahlukene. Lolu lwazi lubalulekile ekukhetheni izinto ezifanele zezinhlelo zokusebenza ezithile, kungaba sezimbonini zokwakha, zezindiza, zezimoto, noma ze-elekthronikhi.
Ukuqinisekisa Ukulawulwa Kwekhwalithi Nokuhambisana
Ukulawulwa kwekhwalithi kubaluleke kakhulu ezimbonini ezithembele kakhulu emikhiqizweni yensimbi. Noma yikuphi ukuphambuka ekwakhiweni kwamakhemikhali okucacisiwe kungaholela ekuhlulekeni okukhulu, kusukela emaphutheni amancane kuya ekuwohlokeni okubi kakhulu. Ukuhlaziywa kokwakheka kwamakhemikhali kuqinisekisa ukuthi izinto zihambisana nezindinganiso ezidingekayo kanye nezincazelo ezichazwe izinhlangano ezigunyaziwe njenge-ASTM (American Society for Testing and Materials) noma i-ISO (International Organisation for Standardization).
Isibonelo, embonini yezindiza, izindinganiso eziqinile ziyaphoqelelwa ngenxa yezinkinga ezinkulu ezihilelekile. Ingxube engalungile engxenyeni yendiza ingaholela emiphumeleni emibi. Ngokuhlaziywa kokwakheka kwamakhemikhali okucophelelayo, abakhiqizi bangaqinisekisa ukuthi inqwaba ngayinye yensimbi ihlangabezana nezindinganiso ezidingekayo ngaphambi kokuba iqale ukukhiqizwa. Lokhu kusungula uhlelo lokulawula ikhwalithi oluqinile oluvikela kokubili ukusebenza kanye nokuphepha komkhiqizo wokugcina.
Ukuthuthukisa Izinqubo Zokukhiqiza
Ngale kokulawula ikhwalithi, ukuhlaziywa kwamakhemikhali okuvamile nakho kudlala indima ebalulekile ekucwengisiseni izinqubo zokukhiqiza. Isibonelo, ekukhiqizweni kwensimbi, ukwazi ukwakheka kwamakhemikhali okuqondile kwezinto zokusetshenziswa kuvumela ukulawulwa okungcono kwezinqubo zokuncibilikisa nokuhlanganisa. Lokhu kunemba kunganciphisa ukumosheka, kunciphise izindleko, futhi kuthuthukise ukuhambisana komkhiqizo.
Ngaphezu kwalokho, ngesikhathi sokukhiqiza, izinhlelo zokuhlaziya zesikhathi sangempela noma eziseduze nesikhathi sangempela zinganikeza impendulo eqhubekayo. Amasu athuthukile njenge-inductively coupled plasma optical emission spectrometry (ICP-OES) noma i-laser-induced breakdown spectroscopy (LIBS) avumela ukuqapha okuqhubekayo futhi avumela ochwepheshe be-metallurgist ukuthi benze izinguquko ngokushesha enkambisweni, ngaleyo ndlela benze ngcono umugqa wokukhiqiza wonke ukuze usebenze kahle futhi ube nekhwalithi.
Ukuphayona Ekuthuthukisweni Kwezinsimbi Ezintsha
Ukuthuthukiswa kwezinto ezintsha, njenge-alloys ephezulu noma izinsimbi ezihlakaniphile, kuwumngcele okhula ngokushesha kwezobuchwepheshe bokubumba. Ukudala lezi zinto ezithuthukisiwe kudinga ukuqonda okujulile ukuthi izakhi ezahlukene zihlangana kanjani ezingeni le-athomu. Ukuhlaziywa kokwakheka kwamakhemikhali kubalulekile kulolu cwaningo, okunikeza idatha edingekayo ukuklama nokuhlanganisa ama-alloys amasha anezakhiwo ezifiselekayo.
Isibonelo, ama-superalloy asetshenziswa ezinjini ze-turbine adinga ukumelana namazinga okushisa aphezulu kanye nokucindezeleka. Abacwaningi bathembele ekuhlaziyweni kwamakhemikhali ukuze bahlole futhi bathuthukise inhlanganisela yezinto ezifana ne-nickel, i-cobalt, i-chromium, ne-tungsten ezinikeza la ma-superalloy ukusebenza kwawo okumangalisayo. Ngokufanayo, insimu ekhulayo ye-nanotechnology ivame ukudinga ukulawulwa okunembile kokwakheka kwama-nanoparticle ensimbi, umsebenzi ongenakwenzeka ngaphandle kokuhlaziywa kwamakhemikhali okuningiliziwe.
Ukucatshangelwa Kwemvelo kanye Nomnotho
Ukuhlaziywa kokwakheka kwamakhemikhali nakho kunemiphumela ebalulekile ekusimeni kwemvelo kanye nokusebenza kahle komnotho. Emisebenzini yokuvuselela kabusha, ukuhlonza ngokunembile ukwakheka kwezinsimbi ezilahliwe kunquma indlela engcono kakhulu yokucubungula nokusebenzisa kabusha lezi zinto. Ukuhlukaniswa okuphumelelayo kanye nokusetshenziswa kabusha kwezinsimbi akugcini nje ngokunciphisa isidingo sokukhishwa kwe-ore eyi-virgin kodwa futhi konga amandla futhi kunciphisa ukungcola.
Ngaphezu kwalokho, imithethonqubo yezomthetho mayelana namazinga avumelekile ezinto ezinobuthi njenge-lead, i-mercury, ne-cadmium emikhiqizweni yabathengi igcizelela isidingo sokuhlaziywa okunembile kokwakheka kwamakhemikhali. Ukungalandeli imithetho kungabangela izinhlawulo ezinkulu kanye nomonakalo edumela lomenzi. Ngakho-ke, izinqubo zokuhlaziya eziqinile zibalulekile ukuqinisekisa ukuthi yonke imikhiqizo ihlangabezana nezindinganiso zemvelo nezokuphepha.
Isiphetho
Ukubaluleka kokuhlaziywa kokwakheka kwamakhemikhali kwezensimbi akunakuphikiswa. Indima yayo isukela ekuqondeni izakhiwo zezinto eziyisisekelo nokuqinisekisa ukulawulwa kwekhwalithi kuya ekwenzeni ngcono izinqubo zokukhiqiza kanye nokuhola ukuthuthukiswa kwama-alloy amasha. Njengoba ubuchwepheshe buthuthuka, izindlela zokuhlaziywa kokwakheka kwamakhemikhali ziyaqhubeka nokukhula, ziba ziqondile kakhulu, zishesha, futhi zingangeni kakhulu.
Emphakathini oqhubeka uqhutshwa izinto ezibonakalayo, ikhono lokuhlaziya nokuqonda ukwakheka kwezinsimbi libaluleke kakhulu kunanini ngaphambili. Kungakhathaliseki ukuthi kusetshenziselweni lansuku zonke njengezinto zokwakha nezingxenye zezimoto noma emikhakheni yanamuhla njengobunjiniyela bezindiza kanye ne-nanotechnology, ukuhlaziywa kokwakheka kwamakhemikhali kungenye yezinsika ezisekela intuthuko eqhubekayo kwezensimbi. Ukutshala imali kumasu okuhlaziya aqinile akugcini nje ngokuthuthukisa ukusebenza nokuthembeka kwemikhiqizo yensimbi kodwa futhi kukhuthaza ukusungula izinto ezintsha, ukuzinza, kanye nokusebenza kahle kwezomnotho kuzo zonke izimboni eziningi.
