Phosphoric acid yog siv los ua polishing tov rau hluav taws xob cua sov raj
Tso lus
Phosphoric acid yog siv los ua polishing tov rau hluav taws xob cua sov raj
89. Hlau electropolishing yog dab tsi?
Teb: Electropolishing yog txheej txheem uas siv cov tshuaj electrochemical los ua kom cov hlau qhov chaw tiaj tus thiab ci iab. Nws tuaj yeem txhim kho corrosion kuj thiab lub teeb pom kev ntawm cov ntaub ntawv. Piv nrog rau cov tshuab polishing, nws kuj muaj qhov zoo xws li kev tsim khoom siab, kev ua haujlwm yooj yim, thiab kev siv zog tsawg. Thaum lub sij hawm electropolishing, anodic dissolution tshwm sim, ua rau ib tug nruam nce nyob rau hauv lub concentration ntawm hlau ntsev nyob ze ntawm lub anode, uas ua rau ib tug nyias nyias zaj duab xis (raws li qhia nyob rau hauv daim duab). Cov yeeb yaj kiab no muaj kev ua haujlwm tsis zoo thiab ua rau anodic polarization, ua rau muaj peev xwm anodic nce ntxiv; Nyob rau tib lub sij hawm, lub thickness faib ntawm cov zaj duab xis nyob rau hauv lub uneven nto ntawm ib feem yog uneven, thiab lub thickness ntawm cov zaj duab xis ntawm lub convex yog me me, yog li cov me me kuj ua rau lub concentration ntawm lub hwj chim kab, accelerates lub dissolution. convex ib feem, thiab ua rau qhov luaj li cas ntawm cov ntxhib convex ib feem ntawm qhov chaw ntawm qhov chaw txo sai sai, thiaj li mus cuag lub hom phiaj ntawm leveling ib feem. Cov zaj duab xis nyias no tseem cuam tshuam qhov kev sib cais ntawm cov anode, txhim kho nws cov nyhuv polarization. Yog li, thaum lub sij hawm anodic dissolution tshwm sim, ib txheej ntawm oxide zaj duab xis yog tsim nyob rau ntawm qhov chaw, uas muaj ib tug tej yam kev mob ntawm stability thiab ua rau ib feem tsis tshua muaj kev cuam tshuam rau cov tshuaj, tawm hauv ib tug me ntsis dull lub xeev. Qhov no yog ib qho tseem ceeb vim li cas rau saum npoo ntawm ib feem kom tau txais luster.
Vim li cas ntau cov tshuaj electropolishing siv phosphoric acid?
Teb: Vim nws cov viscosity siab, tsis tshua muaj tshuaj solubility rau hlau, yooj yim tsim ntawm "thin films", thiab tsis tshua muaj kev txwv tam sim no ceev rau polishing, phosphoric acid muaj cov khoom zoo heev. Yog li feem ntau, phosphoric acid yog siv los ua cov tshuaj electropolishing.
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