Tam sim no, txhuas profile hardening kho nroj tsuag dav siv cov pa oxidation txoj kev xws li sulfuric acid oxidation, oxalic acid oxidation, thiab chromic acid oxidation. Kab lus no muab cov lus qhia luv luv rau qee cov txheej txheem tshiab tam sim no tab tom txhim kho ob qho tib si hauv tebchaws thiab thoob ntiaj teb.
Ceramic Oxidation:
Ceramic oxidation feem ntau yog siv chromic acid, boric acid, thiab poov tshuaj titanium oxalate ua electrolytes, siv high voltage thiab kub electrolysis. Cov yeeb yaj kiab uas tau tshwm sim zoo li lub ntsej muag ntawm cov plooj (porcelain), nthuav tawm siab corrosion kuj thiab zoo hnav tsis kam. Cov zaj duab xis tuaj yeem dyed nrog cov organic lossis inorganic dyes, muab nws ib qho tshwj xeeb luster thiab xim. Nws yog tam sim no siv dav hauv aluminium cookware, lighters, thiab fountain cwjmem, thiab yog nrov heev.
Oxalic Acid-Formic Acid Mixed Solution AC Rapid Oxidation:
Ib qho oxalic acid -formic acid tov tov yog siv vim formic acid yog ib tug muaj zog oxidizing tus neeg sawv cev. Nyob rau hauv cov tshuaj no, formic acid accelerates lub dissolution ntawm lub puab txheej (barrier thiab phab ntsa txheej) ntawm oxide zaj duab xis, yog li tsim ib tug ntxeem tau txheej (piv txwv li, txheej txheej ntawm oxide zaj duab xis). Lub conductivity ntawm cov tshuaj da dej no tuaj yeem txhim kho (piv txwv li, qhov ceev tam sim no tuaj yeem nce ntxiv), tso cai rau kev tsim cov oxide zaj duab xis sai. Piv nrog rau cov ntshiab oxalic acid oxidation txoj kev, cov tshuaj no nce productivity los ntawm 37.5% thiab txo hwj chim noj (oxalic acid oxidation siv 3.32 kWh / m², thaum txoj kev no siv 2 kWh / m²), txuag 40% hluav taws xob.
Cov txheej txheem formula yog:
4-5% oxalic acid, 0.55% formic acid, peb-theem AC 44 ± 2 volts, tam sim no ceev 2-2.5 A / dm², kub 30 ± 2 degree.
Kev Tiv Thaiv Xim Oxidation: Kev tiv thaiv xim oxidation feem ntau yog siv rau kev kho kom zoo nkauj ntawm cov khoom siv tub rog, yog li yuav tsum muaj kev tiv thaiv tshwj xeeb. Cov oxide zaj duab xis yog tub rog ntsuab, matte, hnav-tiv taus, ruaj khov, thiab muaj kev tiv thaiv zoo. Cov txheej txheem yog: ua ntej, oxalic acid oxidation yog ua los tsim cov xim daj daj xim, tom qab ntawd los ntawm kev kho anodizing nrog kev daws ntawm 20 g / L poov tshuaj permanganate thiab 1 g / L H₂SO₄.
Kev sib xyaw acid oxidation:
Txoj kev no tau raug muab tso rau hauv Japanese tus qauv hauv xyoo 1976 thiab tau txais los ntawm Hokusei Nichikatsu Household Products Co., Ltd. Cov txheej zaj duab xis yog silvery -dawb thiab haum rau cov khoom luam tawm thiab xim. Tom qab kev ncig xyuas mus rau Nyiv, Tuam Tshoj cov khoom lag luam aluminium tau pib pom zoo siv hauv xyoo 1979. Cov txheej txheem pom zoo yog: H₂SO₄ 10-20%, COOHCOOH · 2H₂O 1-2%, voltage 10-20V, tam sim no ceev 1-3A / d㎡, kub 15-30℃, thiab feeb.