Galvanic Corrosion Chikemikari Inoratidzwa Zvakanaka
Galvanic corrosion inogona kuitika chete kana maviri emasikironi emasikirini akasiyana-siyana ari pedyo uye anowedzererwa mumvura yakasvibiswa (yakadai semvura yemunyu).
Kana izvi zvikaitika, simbi uye electrolyte zvinogadzira galvanic cell. Sero ine simba rekugadzirisa imwe simbi pamutengo weimwe.
Muchiitiko cheAlarm, dare racho rakange rakasvibiswa pamutengo wemhangura. Makore maviri chete mushure mekugadzira mahwendefa emhangura, simbi dzesimbi dzaishandiswa kuisa mhangura kumucheto wegungwa dzakanga dzatova dzakasvibiswa, zvichiita kuti mapepa emhangura awire.
Maonero aGalvanic Corrosion Anoshanda sei
Mishonga nematare esimbi ane zvose zvakasiyana-siyana zvemagetsi. Electrode zvinogona kufanana nechimiro chesimbi chekushanda mune imwe electrolyte yakapiwa. Izvo zvakanyanya kushanda, kana zvisingasviki zvakanaka, simbi ndiyo inonyanya kukosha ndeyokuumba anode (chinyararire inonzi electrode) mumhepo ye electrolytic. Izvo zvisinganyanyi kushanda, kana munhu ane tsvina yakawanda, zvinowanzoita kugadzira cathode (inoshorwa electrode) kana iri munzvimbo imwechete.
I electrolyte inoshanda senzira yekuendesa ion, kushandiswa kwesimbi ions kubva kune anode kusvika kune cathode. Iyo anode simbi, somugumisiro, inokurumidza kukurumidza kupfuura iyo ingadai isina kudaro, apo cathode yesimbi inowedzera zvishoma nezvishoma uye, mune dzimwe nguva, haigoni kuparadza zvachose.
Mune mhaka yeAlarm , simbi yepamusoro-soro (mhangura) yakashanda semucheka, asi simbi shoma yakaita seyodeti.
Ioni yesimbi yakarasika pamutengo wemhangura, pakupedzisira yakaguma nekukurumidza kukurumidza kwezvipikiri.
Nzira Yokudzivirira Sei Galvanic Corrosion
Nekunzwisisa kwatinoita kwe galvicic corrosion, zvikepe zvesimbi-hulled zvino zvakagadzirirwa ne "anode sacrificial", iyo isingaiti nharaunda yakananga mukushanda kwechikepe, asi inoshandiswa kudzivirira zvivako zvemuganda. Zvibayiso zvezvibayiro zvinowanzogadzirwa neZinc uye magnesium , zvigadzirwa nemhepo yakadzika ine simba. Sezvo zvipfeko zvezvibayiro zvinogadzirisa uye zvinowedzera zvigadziriswa.
Kuti tinzwisise kuti chii chakaitwa nenzire ichava anode uye iyo ichaita sechigoni mumagadziro e electrolytic, tinofanira kunzwisisa nhengo dzesimbi kana simba re electrode. Izvi zvinowanzoyerwa nekuremekedza ku Standard Balomel Electrode (SCE).
Nyora yezvigadzirwa, yakarongerwa maererano nemaikoro e electrode (kukudzwa) mumvura yegungwa inoyerera inogona kuonekwa mutafura iri pasi.
Inofanirawo kuratidzwa kuti galvanic corrosion haisi kungoitika mumvura chete. Galvanic masero anogona kuumba mune chero sarudzo ye electrolyte, kusanganisira mhepo ine mhepo kana ivhu, uye mamiriro emakemikari.
Galvanic Series MuGungwa Rinoyerera Mvura
| Steady State Electrode | Nyaya Inogona Kuitika, Volts (Saturated Calomel Half-Cell) |
| Graphite | +0.25 |
| Platinum | +0.15 |
| Zirconium | -0.04 |
| Tora 316 Stainless Steel (Passive) | -0.05 |
| Ronga 304 Stainless Steel (Passive) | -0.08 |
| Monel 400 | -0.08 |
| Hastelloy C | -0.08 |
| Titanium | -0.1 |
| Sirivha | -0.13 |
| Ropa 410 Stainless Steel (Passive) | -0.15 |
| Tora 316 Stainless Steel (Active) | -0.18 |
| Nickel | -0.2 |
| Tora 430 Stainless Steel (Passive) | -0.22 |
| Copper Alloy 715 (70-30 Cupro-Nickel) | -0.25 |
| Copper Alloy 706 (90-10 Cupro-Nickel) | -0.28 |
| Copper Alloy 443 (Admiralty Brass) | -0.29 |
| G Bronze | -0.31 |
| Copper Alloy 687 (Aluminium Brass) | -0.32 |
| Copper | -0.36 |
| Alloy 464 (Nhamba Yakakoswa Brass) | -0.4 |
| Ronga 410 Stainless Steel (Active) | -0.52 |
| Ronga 304 Stainless Steel (Active) | -0.53 |
| Tora 430 Stainless Steel (Active) | -0.57 |
| Steel Carbon | -0.61 |
| Simbi | -0.61 |
| Aluminium 3003-H | -0.79 |
| Zinc | -1.03 |
Mhedziso: ASM Handbook, Vol. 13, Kuora kweTitanium uye Titanium Alloys, p. 675.