Q1: Dab tsi yog thawj lub cev corrosion cuam tshuam rau aluminium ntawv hlau?
A1: Aluminium nplooj ntawv fim peb hom tseem ceeb corrosion:
Galvanic corrosion: Thaum co tau nrog ntau cov hlau nplaum (piv txwv li, tooj liab, hlau), txhuas ua raws li anode. Lub corrosion tus nqi nce {{{{{0}} {{} mm \/ xyoo nkag).
Pitting corrosion: Chloride-thuam Pitting tsim kev tsim {1}}. {}}}. 3mm \/ xyoo nyob rau hauv cov av marine. 5000-} series} series alloys (5052, 5083) Qhia pom zoo dua tsis kam tshaj li {{series.
Intergranular corrosion: Zais-preco cov chaw-dawb-ua raws cov ciaj ciam av hauv cov pob zeb kub alloys (} t6) corrode {6
Cov tswv yim tiv thaiv xws li:
Maintaining >{{0 {0}}. 5 hli rwb thaiv tsev ntawm kev sib txuas ntawm cov hlau
Tswj chloride raug rau<500ppm
Siv tempers zoo li T73 rau {1}}} series alloys
Q2: Yuav ua li cas anodizing cov txheej txheem tiv thaiv disuminium cov ntawv txheeb?
A2: anodizing tsim cov oxide txheej oxide los ntawm:
Sulfuric Acid Anodizing (Hom II):
10-25 μm tuab
{{0 {0}}% h} ntawm 18-22 degree
{{0 {0}} v dc rau 30-60 feeb
Hardness: 300-500 hv
Hard anodizing (ntaus III):
50-100 μm tuab
{{0 {}} degree electrolyte kub
40-60 v dc
Ua tiav 500-700 hv hardness
Lub Chromate Conversion:
{{0 {0}}. {{{}}} Μm Tshuaj Lom Zem
Muaj cru \/ cr³n
Puag rau cov xim nplaum nplaum
Cov ntaub ntawv ua tau:
Cov txau txau ua kom tsis kam: 1000-5000}} teev (Astm B117)
Hnav Kuj: 10-100} x txhim kho
Thermal Stability txog 2000 Degree
Q3: Dab tsi muaj cov tshuaj organic muab cov kev tiv thaiv zoo txhuas?
A3: Cov tshuab txheej tshwj xeeb suav nrog:
Epoxy Primers:
{{0 {0}} μm DFT (qhuav zaj duab xis tuab)
80-85}% zinc cov ntsiab lus
500-1000} teev nruab nrab ntsev txau txau
PVDF Topcoats:
20-30 μm DFT
70% PVDF Rivin Cov Ntsiab Lus
10-} cov xim khaws cia hauv Florida kuaj
Nanocomposite tsho nplaum:
Sio₂ \/ tio₂ nanoparticles (2-5% chaw thau khoom)
50% txo qis hauv cov pa oxygen permeability
1000+} teev quv tiv taus
Daim Ntawv Thov:
Pretrealment: Chrome-dawb zirmonium hloov dua siab tshiab (10-50 ml \/ m²)
Kev kho: {{10-20 feeb ntawm 180-220 degree
Adhesion: >5MPA (ASTM D4541)
Q4: Qhov kev xaiv alloy muaj feem cuam tshuam corrosion?
A4: corrosion kev ua tau los ntawm alminy series:
{{0 {}} series (99% al): Zoo heev kuj tab sis tsawg zog
{{0 {0}} series (al-mn): Zoo rau roofing ({0}} h14 qhia<0.1mm/year in rural areas)
{{0 {}} series (al-mg): Qhov zoo tshaj plaws tubrog nkoj ua haujlwm ({0} h116: 0.03mm \/ xyoo nyob rau hauv seawater)
{{0 {0}} series (al-mg-si): Ntsuas cov khoom ({{0}} t6: 0.15 hli \/ xyoo muaj huab cua)
2000 \/ 7000-} series: Yuav tsum muaj kev tiv thaiv (2024- t3 corroorodes 10x sai dua 6061 hauv cov ntsev tsuag)
Kev cuam tshuam zoo:
Mg (>3%) txhim kho chloride tiv taus
Cu (>1%) accelerates corrosion
MN \/ CR ntxiv (0}. {{}. 3%}. 3%) Txhim kho qhov pittings
Q5: Dab tsi tshwm sim thev naus laus zis txhim kho Txhuas Corrosion tiv thaiv?
A5: Txoj kev daws teeb meem muaj xws li:
Ntshav hluav taws xob elecma electrolytic oxidation (PEO):
50-100 μm Tej hub txheej txheem
2000hv Hardness
5000+ teev ntsev txau tiv thaiv
Txheej txheem voltage: 300-600 v ac
Graphene-enhanced Txheej Txheem:
{{0 {0}}. {{1-0. 5% graphene chaw thau khoom
90% txo qis hauv kev corrosion tam sim no
10x txhim kho cov khoom siv barrier
Kho tus kheej kho cov txheej txheem:
Microcapsules (5-50 μm) tso tawm neeg inibitors
24-} teev kho ntawm 100μm khawb
2-5}}% tso rau chaw thau khoom (Cillection, moon)
Lub Tsho Ntsuas Pob Ntseg:
PH-rhiab pigments hloov xim
Thaum Ntxov Nrhiav Tau Ntawm Txheej Tsis Ua Haujlwm
Wireless Corrosion Kev Ntsuam Xyuas Sensors
