1.What yog tus nqi ntawm zinc ploj hauv ib puag ncig nyob deb nroog?
Cov yam ntxwv ib puag ncig: huv si huab cua, yuav luag tsis muaj cov pa paug thiab cov pa roj carbon dioxide (twm tsis muaj zog carbonic acid).
Poob tus nqi: Feem ntau 0.5-2 μm / xyoo.
2.What yog tus nqi ntawm zinc ploj hauv ib puag ncig hauv nroog?
Cov yam ntxwv ib puag ncig: Muaj qee qhov kev tso pa tsheb (suav nrog cov sulfur dioxide thiab nitrogen oxides thiab cov hmoov av, thiab muaj peev xwm me me muaj kuab lom.
Tus Nqi Poob: Feem ntau 2-8 μm / xyoo.
Yog hais tias zinc txheej tuab yog 85 μm, lub neej theoretical lub neej ntev yog li 10-40 xyoo, nyob ntawm kev lag luam ntom ntawm lub nroog.
3.Qhov dab tsi yog cov yam ntxwv ntawm Marine / Nqaum Ib puag ncig? Dab tsi yog corrosion tus nqi ntawm zinc txheej?
Cov yam ntxwv ib puag ncig: Cov av noo (feem ntau tshaj 80%), ntau ntau ntawm chloride ions (ntsev tshuaj tsuag) hauv huab cua. Chloride ions muaj cov muaj zog nkag rau lub zog thiab yuav rhuav tshem cov zaj duab xis ntawm zinc txheej, nrawm electrochemical corrosion.
Poob nqi:
Tsis pub dhau 1 km los ntawm ntug hiav txwv (thaj chaw ntsev ntau pos hniav): 10-30 μm / xyoo;
1-5 km los ntawm ntug hiav txwv (nruab nrab ntsev thaj chaw): 5-15 μm / xyoo;
Ntau tshaj 5 km los ntawm ntug dej hiav txwv (qis qeeb qeeb pos huab): 3-8 μm / xyoo.
4.What yog tus nqi ntawm zinc ploj hauv ib puag ncig kev lag luam?
Lub teeb muaj thaj chaw thaj tsam (nruab nrab kom muaj kev kub corrosion)
Cov yam ntxwv ib puag ncig: Muaj ib qho me me ntawm kev lag luam pov tseg roj (xws li ib qho me me ntawm cov sulfur dioxide thiab hmoov av), xws li puag ncig ua zaub mov thiab textile Industries.
Poob Nqi: 5-15 μm / xyoo, ze rau theem ntawm cov nroog nroog muaj kev lag luam.
Hnyav Industrial Thaj Chaw (tsis tshua muaj xeb)
Cov yam ntxwv ib puag ncig: muaj ntau qhov kev ua qias tuaj, thee kev kho mob, kev lag luam kom huv si, ua kom muaj plua plav), tsim cov paastric lossis alkaline corrosive ib puag ncig.
Poob nqi: 15-50 μm / xyoo, lossis ntau dua.
5.Qhov yog zinc txheej poob qis hauv ib puag ncig tshwj xeeb?
Kev kub siab thiab cov av noo ib puag ncig (xws li lub caij kub kub, tsev cog khoom)
Environmental characteristics: temperature>30℃, humidity>90%, accelating lub electrochemical corrosion ntawm zinc.
Depetion tus nqi: 5-20 μm / xyoo, yog tias nrog cov av noo + cov pa roj ua kom ncav cuag 20-30 μm / xyoo.
Cov chaw ib puag ncig (xws li faus galvanized steel kav)
Environmental characteristics: depends on soil pH, moisture content, resistivity (clay>xuab zeb), cov kab mob me me (xws li cov kab mob sulfate).
Nruab nrab av (ph 6-8): 2-5 μm / xyoo; ◦ Acidic av (Ph<5) or saline-alkali land (pH >9): 10-30 μm / xyoo;
Av nplaum nrog cov organic siab / cov pa hluav taws xob tsis muaj pa, vim tias muaj cov pa oxygen, thiab cov kev ua kom haum hauv zos yuav tshwm sim, thiab cov poob haum hloov kho zoo heev (5-50 μm / xyoo).