Nqus nyiaj plating electroless plating:

Nqus nyiaj plating electroless plating:

Muaj ib txheej ntawm cov nyiaj los yog lwm yam hlau zaj duab xis nyob rau saum npoo ntawm cov khoom tom qab ua kom muaj kev kho mob, tab sis vim hais tias nws yog nyias, yog hais tias nws invades lub acidic tov nyob rau lub sij hawm no, cov nyiaj zaj duab xis yuav tev tawm, yog li alkaline electroless tooj liab plating. xav tau ua ntej. , Los ntawm cov tshuaj tiv thaiv redox, ib txheej ntawm tooj liab yog plated rau ntawm qhov chaw ntawm lub workpiece kom ntxiv dag zog rau cov txheej txheem conductive, thiab tom qab ntawd nws tuaj yeem electroplated nyob rau hauv nruab nrab acidic.

Ua kom lub tshuab nqus tsev nyiaj plating:

Lub hom phiaj ntawm kev ua kom muaj zog yog thawj zaug tsim cov yeeb yaj kiab hlau rau ntawm qhov chaw (kom adsorb cov tshuaj catalytic thiab tooj liab rau ntawm qhov chaw sensitized), uas yog siv los ua ib qho catalyst rau cov kauj ruam tom ntej ntawm chemical deposition, uas yog. conducive rau chemical plating.

Nqus nyiaj plating sensitization:

Lub hom phiaj ntawm rhiab heev yog adsorb ib txheej ntawm yooj yim oxidized tshuaj nyob rau saum npoo ntawm cov khoom, thiaj li hais tias ib tug redox tshuaj tiv thaiv yuav tshwm sim thaum lub sij hawm kev kho mob, thiab ib tug catalytic precious hlau zaj duab xis yog tsim nyob rau saum npoo ntawm lub workpiece.

Nqus nyiaj WC / C, B4C zaj duab xis

WC/C, B4C nyias zaj duab xis M. Murakawa, Department of Mechanical Engineering, Nyiv lub koom haum thev naus laus zis, thiab lwm tus siv PVD thev naus laus zis los tso WC/C nyias zaj duab xis rau ntawm lub zog. Nyob rau hauv qhov xwm txheej ntawm tsis muaj roj lubrication, nws lub neej kev pab cuam yog 3 zaug ntawm cov quenched zoo tib yam thiab hauv av gears. Franz J et al. siv PVD thev naus laus zis los tso WC / C thiab B4C zaj duab xis rau saum npoo ntawm FEZ-A thiab FEZ-C zog. Cov kev sim qhia tau hais tias PVD txheej txo cov iav kev sib txhuam, ua rau cov iav tsis tshua muaj thermal bonding los yog gluing, thiab txhim kho lub peev xwm ntawm cov iav. muaj peev xwm.

Composite txheej ntawm Ni-P thiab TiN hauv lub tshuab nqus tsev nyiaj plating

Cov txheej txheej ntawm electroless plating ntawm Ni-P thiab TiN yog npaj los ntawm pre-txheej Ni-P raws li ib tug kev hloov txheej thiab ces depositing TiN. Cov kev tshawb fawb qhia tau hais tias lub hardness ntawm cov txheej txheej yog txhim kho mus rau ib qho twg, lub txheej yog zoo ua ke nrog cov substrate, thiab muaj zoo hnav tsis kam.

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