Graphite Properties-Thermal Conductivity

I-graphite iyinto eyingqayizivele futhi engavamile enezinto eziphawulekayo zokushisa ezishisayo.I-conductivity eshisayo ye-graphite iyanda ngokunyuka kwezinga lokushisa, futhi ukushisa kwayo okushisayo kungafinyelela ku-1500-2000 W / (mK) ekamelweni lokushisa, okungaba izikhathi ezi-5 yethusi futhi izikhathi ezingaphezu kwe-10 kune-aluminium yensimbi.

I-Thermal conductivity isho ikhono lempahla ukuqhuba ukushisa.Kukalwa ngokuthi ukushisa kungahamba ngokushesha kangakanani entweni.I-graphite, uhlobo lwekhabhoni olwenzeka ngokwemvelo, inomoya oshisayo ophakeme kakhulu phakathi kwazo zonke izinto ezaziwayo.Ibonisa i-thermal conductivity ehlukile ekuqondeni kwe-perpendicular kuya kwezendlalelo zayo, iyenze ibe yinto efanelekile yezinhlelo zokusebenza eziningi.

Isakhiwo se-graphiteiqukethe izingqimba zama-athomu ekhabhoni ahlelwe nge-lattice ene-hexagonal.Ngaphakathi kwesendlalelo ngasinye, ama-athomu ekhabhoni ahlanganiswe ndawonye ngamabhondi aqinile.Kodwa-ke, izibopho phakathi kwezingqimba, ezaziwa ngokuthi amabutho e-Van der Waals, abuthakathaka.Ukuhlelwa kwama-athomu ekhabhoni ngaphakathi kwalezi zingqimba okunikeza igraphite izici zayo eziyingqayizivele zokusebenzisa ukushisa.

I-conductivity eshisayo ye-graphite ngokuyinhloko ngenxa yokuqukethwe kwayo okuphezulu kwekhabhoni kanye nesakhiwo se-crystal esiyingqayizivele.Amabhondi e-carbon-carbon ngaphakathi kwesendlalelo ngasinye avumela ukushisa ukuthi kudluliselwe kalula endizeni yongqimba.Kusuka ku-Formular yekhemikhali ye-graphite, singaqonda amandla abuthaka e-inter-layer enza kube nokwenzeka ngamaphononi (amandla okudlidliza) ukuhamba ngokushesha. nge-lattice.

I-high conductivity eshisayo ye-graphite iholele ekusetshenzisweni kwayo kakhulu ezimbonini ezihlukahlukene.

I:Ukukhiqiza i-graphite electrode.

I-graphite ingenye yezinto eziyinhlokoukukhiqiza i-graphite electrode, enezinzuzo ze-conductivity ephezulu yokushisa, ukumelana nokushisa okuphezulu, ukuzinza okuhle kwamakhemikhali, amandla aphezulu emishini, ngakho-ke isetshenziswa kabanzi ku-metallurgy, imboni yamakhemikhali, amandla kagesi nezinye izimboni kunqubo yesithando somlilo we-electrolytic kanye nogesi.

II:I-graphite isetshenziswa emkhakheni wezogesi.

I-graphite isetshenziswa njengento yokucwilisa ukushisa ukuze kukhishwe ukushisa okukhiqizwa izinto zikagesi ezifana nama-transistors, amasekhethi ahlanganisiwe, namamojula wamandla.Ikhono layo lokudlulisa kahle ukushisa kude nalawa madivayisi lisiza ukugcina ukuzinza futhi livimbele ukushisa ngokweqile.

III: igraphite isetshenziswa ekukhiqizeniiziphambanokanye nezibunjwa zokubunjwa kwensimbi.

I-conductivity yayo ephezulu yokushisa ivumela ukudluliswa kokushisa okuphumelelayo, ukuqinisekisa ukushisa okufanayo nokupholisa kwensimbi.Lokhu, nakho, kuthuthukisa ikhwalithi nokuvumelana komkhiqizo wokugcina.

IV:I-Graphite thermal conductivity isetshenziswa embonini ye-aerospace.

Izinhlanganisela ze-graphite zisetshenziswa ekwakheni izindiza nezingxenye zemikhumbi-mkhathi.Izici ezihlukile zokudlulisa ukushisa kwe-graphite zisiza ekulawuleni amazinga okushisa adlulele atholwa phakathi nohambo lwasemkhathini kanye nezindiza ezinesivinini esikhulu.

V: I-Graphite isetshenziswa njengento yokugcoba ezimbonini ezihlukahlukene.

Ivame ukusetshenziswa ezinqubweni zokukhiqiza lapho amazinga okushisa aphezulu kanye nezingcindezi zihilelekile, njengezinjini zezimoto nemishini yokwenza insimbi.Ikhono le-graphite ukumelana namazinga okushisa aphezulu ngenkathi yehlisa ukungqubuzana kuyenza ibe okokugcoba okufanelekile kwezinhlelo ezinjalo.

VI:I-graphite isetshenziswa ocwaningweni lwesayensi.

Ngokuvamile isetshenziswa njengento evamile yokulinganisa ukuqhutshwa kokushisa kwezinye izinto.Amanani asungulwe kahle we-thermal conductivity ye-graphite asebenza njengendawo yokubhekisela yokuqhathanisa nokuhlola izakhiwo zokudlulisa ukushisa kwezinto ezahlukene.

Sengiphetha, i-graphite thermal conductivity ihlukile ngenxa yesakhiwo sayo esiyingqayizivele se-crystal kanye nokuqukethwe okuphezulu kwekhabhoni.Ikhono layo lokudlulisa ukushisa ngendlela efanele liyenze yadingeka kakhulu ezimbonini ezihlukahlukene, okuhlanganisa i-electronics, i-metal casting, i-aerospace, kanye nokugcoba.Ngaphezu kwalokho, i-graphite isebenza njengento yokuma yokukala ukuqhutshwa kokushisa kwezinye izinto.Ngokuqonda nokusebenzisa okuhlukileizakhiwo ze-graphite, singaqhubeka nokuhlola izinhlelo zokusebenza ezintsha kanye nentuthuko emkhakheni wokudlulisa ukushisa nokuphathwa kokushisa.