Taw qhia
sintered cov ntaub ntawv yog tsim los ntawm cua sov hmoov hais los ua ib tug khoom, ntxeem tau qauv uas ua ke
thaj chaw siab nrog lub zog thiab kev ua haujlwm.
Lawv tau siv dav hauv kev lag luam xws li pom, tsheb,
thiab aerospace vim lawv cov khoom tshwj xeeb.
* Ib qho ntawm lawv qhov txiaj ntsig tseem ceeb yogthaj chaw siab, uas txhim kho lawv cov kev ua tau zoo hauv kev siv xws li
raws li kev lim.
Tsis tas li ntawd, cov ntaub ntawv sintered paub txog lawvcorrosion kuj,txawm nrog lawv cov qauv ntxeem tau.
* Cov lus nug tseem ceeb:
Yuav ua li cas sintered cov ntaub ntawv tiv thaiv corrosion txawm tias lawv cov porosity?
* Txawm tias lawv qhov ntxeem tau, sintered cov ntaub ntawv tiv thaiv corrosion vim:
1. Kev xaiv khoom:
Corrosion-resistant alloys, zoo li stainless hlau, feem ntau siv nyob rau hauv sintering.
2.Porosity Tswj:
Qhov sib txuas pores txwv corrosive nkag.
3. Kev kho mob tiv thaiv:
Coatings los yog passivation txhim khu corrosion kuj.
Yog li Hauv tsab xov xwm no, peb yuav tshawb xyuas seb cov xwm txheej no tso cai rau cov ntaub ntawv sintered kom tswj tau ob qho tib si saum npoo av thiab kev tiv thaiv corrosion.
Dab tsi yog Sintered Materials?
Txhais:
Sintered cov ntaub ntawv yog tsim los ntawm cua sov hmoov hlau los yog cov ntaub ntawv ceramic kom qis dua lawv cov ntsiab lus melting, ua rau cov khoom sib txuas ua ke rau hauv cov qauv khoom. Cov txheej txheem no tsim cov khoom siv nrog kev sib xyaw ua ke ntawm lub zog, porosity, thiab kev ua haujlwm.
Txoj Kev Sintering:
Cov txheej txheem sintering yuav tsum compacting hlau los yog ceramic hmoov rau hauv pwm thiab tom qab ntawd siv cov cua sov. Qhov kub yog siab txaus los fuse cov khoom, tab sis tsis txaus kom yaj lawv tag nrho. Raws li qhov tshwm sim, cov khoom sib txuas ntawm lawv cov ntsiab lus ntawm kev sib cuag, tsim cov khoom tsis zoo tab sis ntxeem tau.
Common Applications of Sintered Materials:
* Kev lim dej: Cov ntaub ntawv sintered, tshwj xeeb tshaj yog sintered hlau lim, yog siv rau hauv ntau daim ntawv thov pom vim lawv qhov chaw siab thiab muaj peev xwm ntes cov khoom zoo.
* Catalysis: Hauv cov txheej txheem catalytic, sintered cov ntaub ntawv ua haujlwm txhawb nqa rau cov khoom siv catalyst, muab thaj chaw siab thiab tiv thaiv corrosion thiab hnav.
*Aeration: Cov ntaub ntawv sintered kuj tseem siv rau hauv cov tshuab aeration, xws li carbonation pob zeb hauv brewing, vim lawv muaj peev xwm ua tau zoo diffuse gases los ntawm lawv cov qauv ntxeem tau.
Cov ntaub ntawv sintered muaj nuj nqis thoob plaws hauv kev lag luam rau lawv cov kev ua tau zoo thiab muaj peev xwm los ua ke cov khoom xws li lub zog siab, kub tsis kam, thiab corrosion kuj.
Nkag siab txog thaj tsam siab ntawm Sintered Materials
Qhov chaw siabhais txog tag nrho cheeb tsam muaj nyob rau ntawm qhov chaw ntawm cov khoom, txheeb ze rau nws ntim. Nyob rau hauv cov ntsiab lus ntawm sintered cov ntaub ntawv, nws txhais tau hais tias cov khoom muaj ib tug tseem ceeb npaum li cas ntawm exposed nto nyob rau hauv ib tug compact daim ntawv, vim nws ntxeem tau qauv. Qhov no yog qhov tshwm sim los ntawm kev sib cuam tshuam network ntawm me me pores tsim thaum lub sij hawm sintering txheej txheem.
Kev piav qhia ntawm Porosity thiab nws qhov tseem ceeb hauv cov ntawv thov kev lag luam
Porosityyog qhov ntsuas ntawm qhov chaw tsis muaj dab tsi (pores) hauv cov khoom. Rau sintered cov ntaub ntawv, porosity yog ib qho tseem ceeb feature, raws li nws tso cai rau cov ntaub ntawv uas yuav sib sib zog nqus, permeable, thiab haumxeeb nyob rau hauv daim ntawv thov qhov twg cov kua los yog roj ntws yog txuam nrog. Porosity nyob rau hauv cov ntaub ntawv sintered feem ntau yog li ntawm 30% mus rau 70%, nyob ntawm seb daim ntawv thov.
Hauv kev lag luam chaw, porosity yog qhov tseem ceeb vim nws:
* Ua kom cov dej ntws zoo: Tso cai rau cov pa roj los yog cov kua dej dhau los ntawm cov khoom siv, ua rau nws zoo tagnrho rau kev pom, aeration, thiab lwm yam txheej txheem ntws.
* Txhim kho qhov chaw nto: Ntau qhov chaw nyob hauv tib lub ntim txhim kho kev sib cuag nrog ib puag ncig ib puag ncig, uas yog qhov tseem ceeb rau cov txheej txheem xws li catalysis lossis tshuaj lom neeg.
Cov txiaj ntsig ntawm High Surface Area rau kev siv
Qhov siab saum npoo ntawm cov ntaub ntawv sintered muab ntau yam zoo:
1.Nrhiav kev ua tau zoo:
Lub cheeb tsam loj dua tso cai rau cov lim dej sintered los ntes cov khoom ntau dua, txhim kho lawv cov kev ua tau zoo hauv cov ntawv thov xws li huab cua, roj, lossis kua pom.
2. Txhim kho cov tshuaj tiv thaiv:
Hauv cov txheej txheem catalytic, qhov chaw siab saum npoo muab ntau qhov chaw ua haujlwm rau cov tshuaj tiv thaiv, ua kom cov txheej txheem ua haujlwm.
3. Zoo dua Gas Diffusion:
Hauv cov tshuab aeration, zoo li cov pob zeb carbonation, qhov chaw saum npoo av tuaj yeem pab nthuav cov pa roj ntau sib npaug thiab ua tau zoo, ua rau kom tau txais txiaj ntsig sai dua thiab zoo ib yam.
Hauv cov ntsiab lus, thaj chaw siab thiab qhov porosity ntawm sintered cov ntaub ntawv ua rau lawv muaj nuj nqis nyob rau hauv ntau daim ntawv thov kev lag luam, muab kev ua haujlwm zoo dua qub, kev ua tau zoo, thiab ntau yam.
Yam Tseem Ceeb Ua Rau Corrosion Resistance
Yog vim li cas Corrosion tej zaum yuav xav tau
High deg cheeb tsam nyob rau hauv cov ntaub ntawv sintered exposes ntau nto rau corrosive cov neeg ua hauj, ua rau kom muaj feem ntawm corrosion. Lawv cov qauv ntxeem tau kuj tso cai rau cov ntsiab lus corrosive nkag mus tob dua.
Kev xaiv khoom
Corrosion kuj feem ntau nyob ntawm cov khoom xaiv.Stainless hlauthiabHastelloyyog cov khoom siv sintered vim lawv zoo heev tiv thaiv corrosion nyob rau hauv hnyav tej yam kev mob.
Kev Tiv Thaiv Oxide Passivation Txheej
Cov ntaub ntawv zoo li stainless hlau tsim ib qho ntujpassivation txheejThaum raug cov pa oxygen, tiv thaiv lawv los ntawm kev xeb ntxiv los ntawm kev cais cov nplaim ntawm ib puag ncig.
Lub luag haujlwm ntawm Alloying Elements
* Chromiumtsim cov txheej txheem oxide tiv thaiv, txhim kho corrosion kuj.
* Molybdenumpab tiv thaiv pitting nyob rau hauv ib puag ncig uas muaj chloride.
* Nickeltxhim khu kev tiv thaiv rau high-kub oxidation thiab kev nyuaj siab corrosion.
Ua ke, cov yam ntxwv no ua kom cov ntaub ntawv sintered nyob twj ywm thiab tiv taus corrosion, txawm nyob rau hauv ib puag ncig nyuaj.
Yuav ua li cas sintered cov ntaub ntawv tuav Corrosion Resistance
Passivation Layer ntawm Pore Surface Area
Lub ntujpassivation txheejcov ntaub ntawv nyob rau saum npoo, nrog rau cov pores loj, thaum sintered cov ntaub ntawv zoo li stainless hlau raug cov pa oxygen. Cov oxide txheej no ua raws li kev tiv thaiv kev tiv thaiv, tiv thaiv corrosion.
Dense Porosity Txo Localized Corrosion
Covntom porosity qauvtxwv kev nkag mus ntawm cov tshuaj corrosive rau hauv cov khoom, txo qhov kev pheej hmoo ntawmlocalized corrosionthiab tiv thaiv cov khoom siv ncaj ncees.
Txheej thiab kev kho kom zoo rau kev tiv thaiv
Ntxivtxheej txheej(piv txwv li, passivation lossis ceramic txheej) thiabkev kho saum npoo(xws li electropolishing) tuaj yeem txhim kho corrosion ntxiv, ua cov ntaub ntawv sintered haum rau qhov chaw hnyav.
Corrosion Resistance nyob rau hauv hnyav ib puag ncig
Sintered cov ntaub ntawv qhia tau zoo heev nyob rau hauv:
* Chemical ib puag ncig(acids, kuab tshuaj)
* Dej ntsev(kev siv marine)
* Kev ntsuas kub siab(aerospace, kev lag luam cua sov)
Cov yam tseem ceeb no ua hauj lwm ua ke los xyuas kom meej tias cov ntaub ntawv sintered nyob ruaj hauv cov xwm txheej hnyav.
Kev sib piv nrog Cov Khoom Siv Hluav Taws Xob Cov Khoom Siv Hluav Taws Xob
Corrosion Resistance: Sintered vs. Khoom Hlau Khoom
Thaum ob leegsintered cov ntaub ntawvthiabcov khoom siv hlautuaj yeem nthuav tawm kev tiv thaiv corrosion, cov ntaub ntawv sintered feem ntau ua tau zoo dua hauv qee qhov chaw. Cov hlau tawv siv rau cov khaub ncaws hlau tsis zoo rau kev tiv thaiv, uas tuaj yeem yog nquag mus rau cov chaw hauv zos yog tias muaj qhov tsis txaus ntseeg lossis tsis pom zoo. Nyob rau hauv sib piv, sintered cov ntaub ntawv, nrog lawvporous qauv, yog feem ntau resistant rau corrosion vim lubpassivation txheejthiab lawv lub peev xwm los faib cov kev ntxhov siab thiab tshuaj lom neeg kom sib npaug ntawm qhov chaw.
Qhov zoo ntawm sintered cov ntaub ntawv txawm tias loj dua qhov chaw
Txawm lawvthaj tsam loj dua, sintered cov ntaub ntawv muaj ntau qhov zoo hauv qee yam kev siv:
1.Controlled Porosity:
Cov kev sib txuas ntawm qhov pores pab txo qis hauv cheeb tsam corrosion los ntawm kev txwv qhov tob ntawm cov neeg ua haujlwm corrosive, tsis zoo li cov khoom hlau uas tuaj yeem corrode ntawm cov ntsiab lus tsis muaj zog.
2.High Surface Area rau Lim thiab Catalysis:
Hauv cov ntawv thov xws lilim or catalysis, thaj chaw loj loj tso cai rau cov ntaub ntawv sintered kom zoo hauv kev ntes cov khoom lossis ua kom yooj yim rau cov tshuaj tiv thaiv, uas cov hlau tsis tuaj yeem ua tiav zoo.
3.Flexibility hauv txheej thiab kev kho mob:
Cov ntaub ntawv sintered tuaj yeem kho nrog cov txheej txheem tshwj xeeb thiab kev kho saum npoo, txhim kho kev tiv thaiv corrosion qhov twg cov hlau tsis tuaj yeem hloov tau.
Zuag qhia tag nrho, sintered cov ntaub ntawv muab kev ua tau zoo dua nyob rau hauv qee qhov chaw nruj, tshwj xeeb tshaj yog qhov chaw siab, tswj porosity, thiab kev kho tshwj xeeb yog qhov tseem ceeb.
Ntawm no peb ua ib lub rooj sib pivsintered cov ntaub ntawvthiabcov khoom siv hlau zoo sib xwsnyob rau hauv cov nqe lus ntawmcorrosion kujthiabqhov zoo:
| Feature | Sintered Khoom | Cov Khoom Siv Cov Khoom Siv Hlau |
|---|---|---|
| Corrosion Resistance | Kev tiv thaiv zoo dua vim cov txheej txheem passivation thiab tswj porosity. Ntau tus sib npaug faib cov kev pheej hmoo corrosion. | Nyuaj mus rau hauv cheeb tsam corrosion ntawm cov ntsiab lus tsis muaj zog lossis tsis xws luag hauv qhov chaw. |
| Qhov chaw saum npoo | High deg cheeb tsam vim yog cov qauv ntxeem tau, muaj txiaj ntsig zoo rau kev pom, catalysis, thiab roj diffusion. | Qhov chaw qis dua, zoo dua rau kev siv cov qauv tab sis tsis tshua muaj txiaj ntsig rau kev pom lossis catalytic zog. |
| Porosity Tswj | Tswj porosity txo qhov tob ntawm corrosive nkag thiab txhim khu kev ua tau zoo nyob rau hauv ib puag ncig hnyav. | Khoom, non-porous; muaj kev pheej hmoo siab dua ntawm localized corrosion nyob rau hauv tej yam mob. |
| Adaptability rau txheej / kev kho mob | Yuav tau coated los yog kho nrog tshwj xeeb txheej (xws li, passivation, ceramic txheej) los txhim kho corrosion kuj. | Cov coatings yuav siv tau tab sis tej zaum yuav tsis zoo li hloov tau lossis siv tau zoo hauv qhov chaw nyuaj. |
| Daim ntawv thov | Zoo tagnrho rau kev pom, catalysis, thiab roj diffusion nyob rau hauv ib puag ncig nruj (xws li, tshuaj, dej ntsev, kub kub). | Qhov zoo tshaj plaws rau kev siv cov txheej txheem los yog cov kabmob uas muaj kev tiv thaiv corrosion tsis yog qhov tseem ceeb. |
Cov txiaj ntsig ntawm Corrosion Resistance rau Industrial Applications
Qhov tseem ceeb ntawm Corrosion Resistance hauv Extending Lifespan
Corrosion tsis kam yog qhov tseem ceeb rau kev txuas ntxivlub neejntawm sintered khoom, tshwj xeeb tshaj yog nyob rau hauv ib puag ncig raug rau cov tshuaj hnyav, huab cua kub, los yog high humidity. Cov txheej txheem tiv thaiv passivation thiab cov qauv porosity ruaj khov pab tiv thaiv kev puas tsuaj rau lub sijhawm, kom ntseeg tau tias cov ntaub ntawv sintered tswj lawv cov haujlwm thiab kev ncaj ncees.
Cov piv txwv tiag tiag hauv ntiaj teb ntawm Kev Ua Haujlwm Hauv Ib puag ncig hnyav
1. Kev lag luam tshuaj:
Sintered stainless hlau lim tiv thaiv corrosion hauv acidic lossis yooj yim daws, ua rau lawv zoo tagnrho rauchemical uathiablimntawm aggressive solvents.
2.Kev siv dej hiav txwv:
Hauv cov dej qab ntsev, cov ntaub ntawv sintered xws li Hastelloy lossis stainless hlau tuav lawv cov qauv kev ncaj ncees, tiv thaiv corrosion los ntawm ntsev thiab dej noo, thiab siv rau hauvaeration pob zeb or gas diffusion.
3.Aerospace thiab High-Temperature Systems:
Sintered cov ntaub ntawv tiv taus kub thiab oxidation nyob rau hauvaerospace Cheebtsam, muab txhim khu kev qha kev ua tau zoo nyob rau hauv huab mob.
Cov txiaj ntsig txuag nqi
* Cov nqi kho mob qis dua: Lub durability ntawm corrosion-resistant sintered cov ntaub ntawv txo qhov kev xav tau ntawm kev kho ntau zaus los yog hloov, ua raukev saib xyuas qis duatus nqi.
* Lub neej ua haujlwm ntev: Sintered Cheebtsam tuaj yeem ua haujlwm tau zoo rau lub sijhawm ntev, txo qis sijhawm thiab cov nqi cuam tshuam nrog kev hloov khoom.
* Txhim kho kev ua tau zoo thiab kev ua haujlwm zoo: Corrosion kuj ua kom ntseeg tau tias cov ntaub ntawv sintered tswj lawv cov kev ua tau zoo, xws li hauv cov tshuab lim lossis cov txheej txheem catalytic, nyob rau lub sijhawm ntev.
Nyob rau hauv xaus, corrosion kuj tsis tsuas yog ncua lub neej ntawm cov khoom sintered tab sis kuj muab cov txiaj ntsig zoo-txuag, ua rau lawv zoo tagnrho rau kev thov kev lag luam.
Xaus
Sintered cov ntaub ntawv ua tiav corrosion kuj los ntawm lawv cov txheej txheem passivation, tswj porosity, thiab cov alloys ruaj khov,
ua rau lawv zoo tagnrho rau kev thov kev lag luam.
Lawv qhov kev ua haujlwm ntev ntev muab kev txuag nqi tseem ceeb.
Tiv tauj peb ntawmka@hengko.comrau OEM koj sintered hlau lim ntsiab rau corrosion-resistant daws.
Post lub sij hawm: Dec-05-2024
