2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Qhov kub tseem nyob tas li thaum lub sijhawm hloov pauv vim tias tshav kub lub zoguas tau muab los hloov lub xeev cov teeb meem yog siv los rhuav tshem cov rog intermolecular thiab lwm yam txaus nyiam. … Li no qhov kub tseem nyob tas li vim txhua qhov cua sov tau siv thiab tsis muaj cua sov sab nraud tawm los yog nqus tau.
Vim li cas qhov kub thiab txias nyob twj ywm thaum lub sijhawm hloov pauv?
Thaum lub sijhawm hloov pauv ntawm lub xeev teeb meem, lub zog nkag tsis yog siv los ua kom lub zog kinetic ntawm cov molecules, tab sis hloov pauv lub zog khi. Yog li ntawd, qhov kub thiab txias nyob twj ywm.
Yuav ua li cas rau qhov kub thiab txias thaum lub xeev hloov?
Qhov kub nyob li qub thaum cov khoom tawg lossis cov kua kub npau npau (hloov lub xeev) thaum lub xeev hloov pauv, txawm tias lub zog cua sov tau nqus. Qhov kub thiab txias kuj tseem nyob zoo ib yam thaum cov kua dej khov, txawm tias lub zog cua sov tseem raug tso tawm mus rau ib puag ncig.
Thaum qhov kub thiab txias nyob tas li thaum lub sijhawm hloov pauv dua li nws hu ua?
txheej txheem no hu ua sublimation. Xav txog tias koj nyob twj ywm haus koj cov txiv qaub nyob rau sab nraum zoov ua si. Koj lob qee cov dej khov kom txias koj cov txiv qaub, thiab qhov sib tov hauv koj lub khob tam sim no yog ib nrab dej khov, ib nrab txiv qaub (uas koj tuaj yeem xav tias muaj tib lub cua sov li dej), nrog rau qhov kub thiab txias.raws nraim 0 degrees Celsius.
Vim li cas qhov ntsuas kub tseem nyob tas li thaum lub sijhawm hloov pauv ntawm cov xeev?
Thaum ib yam khoom muaj kev sib tshuam ces qhov kub ntawm cov khoom tseem nyob tas li. Qhov no yog vim tshav kub nkag rau cov khoom pab cuam hauv kev tawg cov siv lead ua lattice ntawm cov khoom. Yog li ntawd, tag nrho cov molecules tau tib lub zog kinetic. Yog li, tsis muaj qhov hloov pauv hauv qhov kub thiab txias.
Pom zoo:
Lub sijhawm distillation cov kua yog rhuab mus rau qhov kub thiab txias?
Distillation yog cov txheej txheem sib cais uas siv kom zoo dua ntawm qhov kub ntawm cov khoom sib xyaw. Txhawm rau ua kom distillation, sib tov miscible ntawm ob lub kua nrog qhov sib txawv tseem ceeb hauv cov ntsiab lus kub - tsawg kawg 20 °C - yog rhuab.
Puas yog qhov kub thiab txias cuam tshuam qhov zaus ntawm cov yeeb nkab hauv nruab nrog cev?
Qhov cuam tshuam ntawm cua sov ntawm cov yeeb nkab zaus ntau dua li qhov nce ntawm qhov ntev ntawm cov yeeb nkab kom qhov zaus ntawm cov yeeb nkab hauv nruab nrog cev nce ntxiv thaum kub nce. Thaum kub nce zaus ntawm cov yeeb nkab hauv nruab nrog cev?
Lub sijhawm nyob qhov twg ntawm lub sijhawm teem sijhawm?
kab kab rov tav ntawm lub rooj ntu ntu yog hu ua ntu ntu. Lub sijhawm nyob rau ntawm lub sijhawm nyob qhov twg? Ib lub sijhawm yog kab kab rov tav ntawm lub rooj ntu ntu. Muaj xya lub sij hawm nyob rau hauv lub sij hawm ntawm lub sij hawm, nrog txhua tus pib ntawm sab laug.
Lub sijhawm txias txias austenite hloov mus rau?
Thaum lub sijhawm hloov pauv ferrite, cov pa roj carbon diffuses rau hauv austenite, uas ua rau kom muaj zog ntawm theem no. Lub hom phiaj ntawm lub caij txias ceev yog hloov pauv cov austenite ntxiv mus rau martensite. Qhov kub npaum li cas ua qhov kawg austenite hloov pauv ntawm qhov txias?
Vim li cas qhov tseem ceeb ntawm qhov muaj zog thiab qhov tsis muaj zog yog qhov tseem ceeb?
Nws yog ib qho tseem ceeb rau qhov tseem ceeb ntawm qhov ua tau zoo thiab qhov tsis muaj zog vim qhov no pab lub tuam txhab txiav txim siab txog thaj chaw uas lawv yuav tsum tau txhim kho ntxiv rau thaj chaw uas lawv ua tau zoo hauv. Vim li cas lub zog thiab qhov tsis muaj zog tseem ceeb?
