Ulwaphulo luyinkxalabo enkulu yokwakha noKhuseleko
Ngaba Zonke Iimpawu Zibhalela?
Zonke izinyithi ziya kunqumla. Abanye, njengentsimbi ecocekileyo, bahlawule ngokukhawuleza. Insimbi engenasici, nangona kunjalo, edibanisa isinyithi kunye nezinye i-alloys, ihamba ngokukhawuleza ukubola kwaye isetyenziswe rhoqo.
Yonke iqela elincinci lezinyithi, elibizwa ngokuba yiMatable Metals, liyancipha kakhulu kunabanye. Ngenxa yoko, baqhekeza ngokungaqhelekanga. Ewe, eqinisweni, yintsimbi yodwa enokufunyanwa kwendalo kwimo yabo ecocekileyo. Iimpawu eziMnandi, akumangalisi ukuba zihlala zixabisekileyo. Ziquka ubhedu, i-palladium, isilivere, i-platinum kunye negolide.
Iintlobo zoKhuhlane
Zininzi izizathu ezahlukeneyo zokutshatyalaliswa kwesimbi. Ezinye ziyakunqandwa ngokufaka ii-alloys kwisitye. Abanye banokuthintela ngokuhlanganiswa ngokucwangcisekileyo kwezinyithi okanye ukulawulwa kwendawo yensimbi. Ezinye zezona ntlobo eziqhelekileyo zokubola zichazwa ngezantsi.
1. Uhlaselo oluqhelekileyo Ukuchithwa:
Olu hlobo oluqhelekileyo lokuhlaselwa kwe-corrosion yonke indawo yesakhiwo sesinyithi. Kubangelwa yimichiza okanye i-electrochemical reaction. Nangona ukuhlaselwa ngokuqhelekileyo ukubola kungenza ukuba isinyithi iphumelele, yinto eyaziwayo kwaye eqikelelweyo. Ngenxa yoko, kunokwenzeka ukucwangcisa nokulawula ukuhlaselwa ngokubanzi.
2. Ulwabiwo lwendawo:
Ukuhlaselwa kwendawo ekuhlaselweni kwendawo kuphela yecandelo lesinyithi. Kukho iintlobo ezintathu ze-corrosion yangoku:
- Ukupaka - ukudala imingxuma emancinci kwintsimbi.
- Ukuqhaqhaqhaqhaqhaqhaqhako - ukubola okuqhubekayo kwiindawo ezinqamlekileyo ezinjengezo zifunyenwe phantsi kweenkikethi.
- UFiliform ukutshabalalisa: ukuqhuma okwenzekayo xa amanzi ephantsi kweengubo ezifana nopende. ubuthathaka.
3. I-Galvanic Corrosion:
I-Galvanic i-corrosion iyakwenzeka xa izitya ezimbini ezihlukeneyo zihlala kunye kunye ne-electrolyte yamanzi njengetyuwa. Ngokwenene, enye i-molecule yensimbi ithathelwa kwenye isinyithi, ekhokelela ekugqibeleni kwintsimbi enye kuphela.
4. UkusiNgqongileyo:
Xa izimo zendalo zingqongqo ngokwaneleyo, isinyithi sinokuqala ukuphazamiseka, ukukhathala, okanye ukuphazamiseka.
UkuCandwa koKhuseleko
I-World Corrosion Organisation iqikelela ukuba iindleko zehlabathi jikelele zokubola ziba malunga ne-US $ 2.2 trillion ngonyaka, kwaye ukuba inxalenye enkulu yale nto - engama-25% - ingaqedwa ngokusebenzisa iindlela ezilula, ezichanekileyo zokuthintela. Ukuthintela ukukhutshwa komzimba akufuneki, kodwa, kuthathelwa ingqalelo nje yimiba yezemali, kodwa enye yezempilo kunye nokhuseleko. Ukuqhayisa amabhuloho, izakhiwo, iinqanawa kunye nezinye izakhiwo zentsimbi kwaye kunokubangela ukulimala nokufa.
Inkqubo ekhuselekileyo yokuthintela iqalisa kwisigaba sokuyilwa ngokuqonda kakuhle imiqathango yendalo kunye nezakhiwo zensimbi. Iinjineli zisebenza kunye neengcali ze-metallurgical ukukhetha i-metal okanye i-alloy efanelekileyo kwiimeko nganye. Bamele baqaphele ukusetyenziswa kwamakhemikhali okwenzekayo phakathi kweesinyithi ezisetyenziselwa izakhiwo, ukufakwa kunye nokuzibophelela.
Oluthe xaxa malunga nokuCoca
Ukuchithwa kuyinzululwazi eyinkimbinkimbi efuna ulwazi olunzulu malunga nekhemistry, i-metallurgy, iingubo kunye neengcinezelo zendalo. Funda kabanzi malunga nokubola kunye nala manqaku athile:
- Iintlobo zoKhuhlane
- UkuCandwa koKhuseleko
- Uluhlu loHlola lokuLawula
- I-Corrosion Rate Calculator
- I-Galvanic Corrosion
- Galvanization