Ụkpụrụ ngafe nke ngwa ngwa na ndụmọdụ mara mma nke ọgwụgwọ mgbochi

Mgbe a gwọchara ígwè ahụ site na oxidizing media, ọnụ ọgụgụ corrosion nke ígwè ahụ dị ntakịrị karịa nke ígwè mbụ a na-adịghị edozi, nke a na-akpọ passivation nke metal.

N'ikwu okwu n'ozuzu, passivation n'ezie amama na-arụsi ọrụ ike metal elu n'ime ihe inert elu site chemical mmeghachi omume nke passivation ngwọta, nke mere iji gbochie mpụga ebibi bekee si meghachi omume na metal elu na nweta nzube nke ịgbatị oge nchara metal. (Ọ bụ ya mere ngwaahịa dị mfe nchara tupu passivation, ma ọ bụghị mgbe passivation. Dị ka ihe atụ, ígwè ga-adịghị anya igbari na itughari nitric acid, ma onu nke dissolving na ndọpụ nitric acid fọrọ nke nta kpamkpam akwụsị; Aluminom bụ ejighị n'aka na itughari nitric acid, ma aluminom containers nwere ike iji na-echekwa etinye uche nitric acid a na-akpọ passivation phenomena.

Ụkpụrụ nke passivation

Enwere ike ịkọwa ụkpụrụ nke passivation site na usoro ihe nkiri dị mkpa, ya bụ, a na-ewere ya na passivation bụ n'ihi mmekọrịta dị n'etiti metal na oxidizing media, nke ga-emepụta ihe dị oke mkpa (ihe dị ka 1nm), ihe nkiri na-ekpuchi ekpuchi nke ọma. n'elu ígwè, nke nwere ike ịkwado ya n'elu ígwè. Ihe nkiri a dị ka akụkụ nke nọọrọ onwe ya, na-abụkarị ngwakọta nke oxygen na metal.

Ọ nwere ike kpamkpam ikewapụ metal si corrosive ọkara, na-egbochi metal si ozugbo ịkpọtụrụ na corrosive ọkara, nke mere na metal ihu ọma akwụsị dissolving na Nleta a na-agafe agafe ala iji nweta nzube nke igbochi corrosion na nchara.

Njirimara na uru nke passivation:

Ihe ngwọta passivation igwe anaghị agba nchara adịghị agbanwe nha, agba na ọdịdị nke kposara; Enweghị ihe nkiri mmanụ agbakwunyere, na nguzogide corrosion dị mma ma kwụsie ike (ngwọta passivation bụ nhọrọ kachasị mma iji dochie ọgwụgwọ mgbochi corrosion omenala iji gbanye mmanụ mgbochi nchara). Ọ dịghị mkpa maka ngwá ọrụ pụrụ iche na ọnọdụ nhazi siri ike, ọ bụ nanị ihe ole na ole plastik ma ọ bụ tankị igwe anaghị agba nchara chọrọ, na ọnụ ahịa dị ala (2/3 na-erughị nke nhazi nke outsourcing); Ọrụ ahụ dị mfe, nke na-egbo mkpa nke ụlọ ọrụ dị ukwuu, ma hụ na onye ọ bụla nwere ike ime ya, onye ọ bụla nwere ike ime ya, ma nwee ike ime ya n'oge ọ bụla. Naanị mikpuo skru na Senyuan ika igwe anaghị agba nchara ngwọta passivation maka nkeji 30 n'ime ụlọ okpomọkụ.

Mmasị:

Mgbe ịghasa ahụ gafere, a ga-emepụta ihe nkiri passivation nke ukwuu nke nwere ezigbo mkpuchi n'elu ihe nkedo ahụ, nke nwere ike ime ka ịghasa ahụ dịkwuo njọ, ruo ihe karịrị awa 500 nke nyocha nnu nnu.

Usoro ngafe screw:

Buru ụzọ wetuo ihe nkedo-sachapụ ha na mmiri na-asọ asọ-na-arụ ọrụ ha-na-asachapụ ha na-asọpụta mmiri-passivate ha (maka ihe karịrị 30 nkeji) sachaa ha na-asọpụta mmiri-hichaa ha na ultrapure mmiri-hichaa ha ma kpokọta ha.