Video: Vim li cas galvanic corrosion tshwm sim?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Galvanic corrosion tshwm sim thaum ob lub dissimilarmetals tau raus rau hauv kev daws teeb meem thiab tau txuas nrog hluav taws xob. Ib qho hlau (cathode) raug tiv thaiv, hos lwm qhov (anode) yog corroded. Tus nqi ntawm kev tawm tsam ntawm anode tau nrawm dua, piv rau tus nqi thaum cov hlau raug sib cais.
Ntxiv mus, dab tsi yog galvanic cell corrosion?
Galvanic corrosion (tseem hu ua bimetallic xeb ) yog cov txheej txheem hluav taws xob uas ib qho hlau tshwj xeeb tshwj xeeb thaum nws nyob hauv kev sib cuag hluav taws xob nrog lwm tus, thaum muaj cov electrolyte.
Kuj Paub, dab tsi tshwm sim thaum lub sij hawm galvanic corrosion? Galvanic Corrosion . Galvanic corrosion (qhov sib txawv-hlau xeb ) yog txheej txheem hluav taws xob nyob rau hauv uas ib qho hlau corrodes nyiam dua, thaum twg nyob rau hauv kev sib cuag hluav taws xob nrog hom hlau sib txawv, thiab ob qho hlau tau raus dej nyob rau hauv electrolyte xws li dej.
Kuj paub, puas galvanic corrosion xav tau oxygen?
Thaum tsis muaj yaj cov pa lossis hydrogenions los tswj cov txheej txheem cathode, corrosion txheej txheem tsis tshwm sim Nws muaj peev xwm los ua ke cov hlau sib txawv suchas tooj liab thiab hlau hauv cov kaw dej kub kaw nrog me ntsis xeb.
Puas yog Zinc anode lossis cathode?
Los ntawm kev pom zoo hauv tus qauv ntawm tes cim, tus qhov anode yog sau rau ntawm sab laug thiab cov cathode sau rau ntawm sab xis. Yog li, hauv lub cell no: Zinc yog qhov anode (tawv zinc yog oxidized). Silver yog cov cathode (nyiaj ions raug txo).
Pom zoo:
Qhov twg ntawm cov hauv qab no yog qhov muaj peev xwm tshwm sim tshwm sim ntawm kev tswj hwm procainamide?
Muaj ntau cov kev mob tshwm sim tom qab induction ntawm procainamide. Cov kev tsis zoo no yog ventricular dysrhythmia, bradycardia, hypotension thiab poob siab. Cov kev phom sij tshwm sim ntau dua yog tias cov koob tshuaj txhua hnub tau nce. Procainamide kuj tseem tuaj yeem ua rau kub cev tshuaj thiab lwm yam kev ua xua
Dab tsi yog qhov tshwm sim tshwm sim ntawm tus neeg sawv cev tiv thaiv anginal?
Mob taub hau yog qhov tshwm sim feem ntau ntawm nitrates; feem ntau cuam tshuam nrog koob tshuaj thiab tshaj tawm txog li 82% ntawm cov neeg mob hauv kev sim tshuaj tswj cov placebo. Ze li 10% ntawm cov neeg mob tsis tuaj yeem tiv taus nitrates vim ua rau mob taub hau lossis kiv taub hau
Dab tsi yog ob qhov tshwm sim tshwm sim ntau tshaj ntawm cov tshuaj bronchodilators?
Cov tshuaj bronchodilators tuaj yeem muaj cov kev mob tshwm sim zoo li no: Ntshai lossis tshee tshee. Nce lub plawv dhia los yog palpitations. Chim plab. Teeb meem pw tsaug zog. Cov leeg mob los yog cramps
Dab tsi yog qhov teeb meem ntawm daim tawv nqaij uas tshwm sim los ntawm kev mob ntev ntawm cov qog sebaceous tshwm sim los ntawm cov khoom zais cia?
AKA pob txuv vulgaris- Cov teeb meem ntawm daim tawv nqaij ua rau mob ntev ntawm cov qog sebaceous los ntawm khaws cia tso zis thiab Propionbacterium acnes, lub sijhawm tshawb fawb rau cov kab mob pob txuv. Qhov mob ntawm daim tawv nqaij qhuav, tawv nqaij vim tsis muaj lossis tsis muaj sebum uas tshwm sim los ntawm cov laus thiab los ntawm qhov txias
Yuav ua li cas galvanic corrosion txo?
Galvanic corrosion tuaj yeem tiv thaiv los ntawm tus lej ntawm txoj hauv kev: Xaiv cov hlau/cov hlau sib xyaw kom ze ua ke raws li qhov ua tau hauv galvanic series. Zam qhov chaw tsis zoo cuam tshuam los ntawm qhov anode me thiab cov cathode loj. Xim lub cathode (orboth) thiab khaws cov coatings hauv kev kho zoo ntawm theanode