??? ????(anodizing)

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??? ????(anodizing)

• 5.1 ??
• 5.2 ???????
• 5.3 ????????
• 5.4 ????????(coloring Anodic
• Coating )
• 5.5 ??(sealing )
• 5.6 ???????

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6.1 ??

• 1.???????
• (1)???(??)?????????,?
• ???????????????????
• (2)?????????????????,
• ?????????
• (3)??????????????????
• ??,?????,???????

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• 2.????????
• (1)????????????????
• ?????????????????
• ?????????
• (2)????????????????
• ??????
• (3)???????????????????
• ?????

4

• 3.????????
• (1)??????
• a.?????????????,?????,???
• ????????,??????????????
• ????,?????Al2O3?,?????????
• ???????200?,????????(barrier
• film)?
• b. ??????????????????????
• ??,??????????????Al2O3??

5
??????
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2.????????

• (1)????????????????
• A??????
• B?????????
• (2)????????????????????????????????????????
  ??????????????
• (3)?????,??????????????????

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5.2 ???????

• 1.???(corrosion resistance)????????????, ???????
• 2.?????(paint adhesion) ??????????
• 3.??????????????,????????????????,????,??????????
  ???????,?????????? (interlocking)????????
• 4.??(decorative appearance)??????,???,???????????
  ??????????

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5.2 ??????? (?)

• 5.???(electrical insulation)?????????????????????
  ,??????(capasitor)??? ?
• 6.????(photographic substrates)????????????,?????
  ?(light-sensitive materials)?????????????(photogra
  phic film) ?
• 7.???????(emissivity and reflectivity)??(aerospace
  ),??(electronics)???(machinery)???????
• 8.???(abrasion resistance),??(-410?)?????????????
  ???    ????(hard anodic coating)??????,?????(gears
  ),??(pistons),    ??(fanblade),????(fuel nozzles)
  ?
• 9.????(surface analysis)??????(chromic
  acid)?????????????(surface flaw)????????????(metal
  lurgical characteristics) ?

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5.3 ????????

• 1.???????(conventional sulfuric acid anodizing
  electrolyte)???????(protective),???2.530µm
• ?????
• ? ? H2SO4 1225wt
• ? ? 21?
• ???? 260A/m
• ? ? 1222V
• 2.?????????(chromic acid anodizing
  Electrolyte)?????????, ??????,???????,?????10µm,??
  ???
• ? ? chromic acid 310
• ? ? 40 ?
• ? ? ???? (30??) 040V
• ???? 0.30.5A/dm2

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5.3 ????????(?)

• 3.???????(phosphoric acid anodizing
  Electrolyte)????????,?????????????,?????
•    ? ? Phosphoric acid 320 Vol
•    ? ? 3035?
•    ? ? 5060V
•    ? ? 1530min
• 4.???????(hard anodizing Electrolyte)?????????????
  ??????????250µm???????????,?????
• ? ? Sulfuric acid 15Vol
• ? ? temperature 03?
• ???? current density 22.5A/dm2
• ? ? 2060V
• ? ? 60200?

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5.3 ????????(?)

• 5.???????(oxalic acid anodixing
  Electrolyte)????????(yellow coatings)?????????????
  ,?????
• ? ? 310 wt
• ? ? 2435 ?
• ???? 12 A/dm
• ? ? 4060?
• 6.?????(sulfonated Organic Acid
  )?????????,??????(bronze)??(gold),??(gray)????????
  ?,??????????????(dense)??(hard)

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5.4 ????????

• ???????(Electrolytic procedure),????(organic
  dyes),
• ????(inorganic pigments)?????(Electrolytically
  deposited metal)???

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5.5 ??(sealing )

• ???????????(postanodizing treatment)
  ,????????(pores)
• ????????????(nonabsorptive)???????????????????????
  
• ????(sealing process) ???????(dissolution)?????(hy
  droxide)??(reprecipitation)???????????????????????
  ??? ?

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5.5 ??(sealing )??
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5.6 ???????

• 1.???(electrical contact)????????
• ?,???????????????
•   2.??(racks)????????,?????
• (overheating)???(arcing),???????
• ????????(caustic soda)??????
• 3.??(coolin)???(agitation),?????????,?????????????
  (cooling coil )?????(heat exchanger)??????
  ,????????????

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5.6 ???????

• 4.???(tank linigs)316???,??(antimonial lead
  ),??(Tellurium Lead)????????,??(inert
  lining)????(rubber),??(plastic),???(Glass)
• 5.????(power supply)???????(motor
  generators)????(rectifiers)????????????,
  ???24v,??????????????????100v,?????????????(consta
  nt current and voltage )
• 6.????(fume removal)?????????

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??????

• ????????,???????????????????,?????????????????????
  ??????
• ???????????????

21
??????(??)

• ???????????
• ??????????????????
• ?????????????

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??????(??)?

• ??????????????????
• ????

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