Emkhakheni wobuchwepheshe besithando somlilo se-crystal eyodwa, ukusebenza kahle nokunemba kokuphathwa kokushisa kubaluleke kakhulu. Ukuthola ukufana kwezinga lokushisa elilungile nokuzinza kubalulekile ekukhuliseni amakristalu awodwa ekhwalithi ephezulu. Ukubhekana nalezi zinselelo,graphite heaterziye zavela njengesixazululo esiphawulekayo, ngenxa ye-thermal conductivity engavamile. Kulesi sihloko, sizocubungula ukubaluleka kwezifudumezi ze-graphite kanye nendima yazo endaweni eshisayo yezithando zomlilo zekristalu eyodwa.
I-graphite, uhlobo lwekhabhoni, inezinto ezihlukile eziyenza ibe into efanelekile yokusetshenziswa kwezinga lokushisa eliphezulu. Enye yezinto ezinjalo yi-conductivity yayo evelele yokushisa. I-graphite ine-thermal conductivity ephezulu kakhulu, eyivumela ukuthi idlulise ukushisa ngokushesha nangempumelelo kuso sonke isakhiwo sayo. Lesi sici esiyingqayizivele sikwenza kube ukukhetha okuhle kakhuluizakhi zokushisaezithandweni zekristalu eyodwa.
I-conductivity eshisayo ye-graphite ingabangelwa isakhiwo sayo esiyingqayizivele se-crystal. I-graphite iqukethe izendlalelo zama-athomu ekhabhoni ahlelwe nge-lattice ene-hexagonal. Ngaphakathi kwesendlalelo ngasinye, ama-athomu ekhabhoni ahlanganiswe ngokuqinile, enze izibopho eziqinile ezihlangene. Kodwa-ke, ukuhlangana phakathi kwezingqimba kubuthakathaka, okuholela ekwakhekeni kwe-layer ngama-electron amahhala angahamba kalula. Lawa ma-electron amahhala afaka isandla ekwenzeni i-graphite ephezulu kagesi kanye ne-thermal conductivity.
Emkhakheni oshisayo weziko lekristalu elilodwa,graphite heateridlala indima ebalulekile ekuzuzeni ukushisisa okunembayo nokufanayo. Ngokuqhuba kahle ukushisa, basiza ukugcina izinga lokushisa elifunekayo kuyo yonke inqubo yokukhula kwekristalu. I-thermal conductivity enhle kakhulu ye-graphite iqinisekisa ukuthi ukushisa kusakazwa ngokulinganayo endaweni yokushisa, kunciphisa izinga lokushisa kanye nezindawo ezishisayo. Lokhu kufana kubalulekile ekukhuleni okulawulwayo nokungaguquguquki kwekristalu eyodwa, okuthinta ngokuqondile ikhwalithi nezakhiwo zabo.
Ngaphezu kwalokho, izinga eliphezulu le-thermal conductivitygraphite heaterivumela ukufudumeza okusheshayo nokupholisa imijikelezo, ukunciphisa isikhathi sokucubungula ekukhuleni kwekristalu eyodwa. Ukudluliswa kokushisa okuphumelelayo okuhlinzekwa yi-graphite kwenza isithando somlilo sifinyelele izinga lokushisa elifunayo ngokushesha, sithuthukise ukukhiqiza ekukhiqizeni i-crystal. Ukwengeza, ikhono lokupholisa ngokushesha ngemva kwenqubo yokukhula lisiza ukukhishwa kwekristalu ngokushesha futhi linciphise sonke isikhathi sokukhiqiza.
Izifudumezi ze-graphitefuthi zibonisa ukuzinza okuhle kokushisayo, okuzivumela ukuthi zikwazi ukumelana namazinga okushisa adlulele okuhlangatshezwana nazo ezindaweni zesithando somlilo sekristalu eyodwa. Angasebenza emazingeni okushisa aphakeme ngaphandle kokuwohloka okukhulu noma ukuhlanekezela. Lokhu kuzinza okushisayo kuqinisekisa ukuphila isikhathi eside nokuthembeka kwama-heaters, ukunciphisa izidingo zokugcinwa nokunciphisa isikhathi senqubo yokukhula kwekristalu.
Enye inzuzo yegraphite heaterukuhambisana kwazo ne-vacuum noma izimo zomoya ezilawulwayo ezivame ukusetshenziswa ekukhuleni kwekristalu eyodwa. I-graphite ayisebenzi ngamakhemikhali futhi ayisebenzi ngamagesi amaningi, okuyivumela ukuthi igcine izakhiwo zayo ezishisayo ezindaweni ezihlukahlukene. Lokhu kuguquguquka kwenzagraphite heaterilungele izinhlobonhlobo zamasu okukhula kwekristalu, okuhlanganisa i-Czochralski, i-Bridgman, nezindlela zendawo ezintantayo.
Sengiphetha, i-conductivity engavamile ye-thermalgraphite heaterkubenza babaluleke kakhulu emkhakheni oshisayo weziko lekristalu elilodwa. Ikhono labo lokudlulisa kahle ukushisa nokugcina izinga lokushisa lilingana libalulekile ekukhuleni okulawulwayo kwekhwalithi ephezulu yamakristalu awodwa. Izifudumezi ze-graphite zinika amandla imijikelezo yokushisisa nokupholisa okusheshayo, zithuthukisa ukukhiqiza, futhi zinikeza ukuzinza okuhle kakhulu kokushisa ezindaweni eziyingozi kakhulu. Njengoba isidingo samakristalu angawodwa asebenza kahle kakhulu siqhubeka sikhula, ukubaluleka kwezifudumezi ze-graphite ekuthuthukisweni kobuchwepheshe bokukhula kwekristalu akukwazi ukweqiwa.
Isikhathi sokuthumela: Apr-08-2024