Paub meej txog kev paub txog kev lag luam ceramic metallization

 

Ceramic metallization is a special surface treatment technology that forms a dense metal film on the surface of a ceramic substrate to make the ceramic weldable and conductive, thereby achieving a reliable connection between ceramics and metal materials. Lub ntsiab ntawm cov cuab yeej no yog tsim kom muaj ib qho kev hloov pauv nruab nrab ntawm cov txheej txheem ceramics uas muaj tshuaj lom neeg ruaj khov thiab nyuaj rau ntub los ntawm cov khoom siv. Cov txheej txheem nruab nrab no tuaj yeem tsis tsuas yog hnov ​​​​mob chemically nrog cov ceramic matrix los ua ib daim ntawv cog lus ruaj khov, tab sis kuj tsim kom zoo wetting thiab diffusion nrog hlau solder, yog li ua tiav airtight sealing lossis hluav taws xob sib txuas ntawm cov khoom sib txawv. Nyob rau hauv lub tshav pob ntawm lub hwj chim semiconductor, Metallized Ceramic Housing rau Fais Fab Semiconductors yog ib qho tseem ceeb ntawm IGBT modules, MOSFET ntim thiab thyristor vaj tse. Cov khoom siv no siv cov txheej txheem metallization los tsim cov txheej txheem hlau hauv cov chaw tshwj xeeb ntawm cov vaj tsev ceramic rau kev sib dhos nrog tooj liab substrates, txhuas thav duab lossis cov khoom siv, thaum lub cev ceramic muab hluav taws xob rwb thaiv tsev thiab cov thermal conductivity siab. Metallized Ceramic Insulating Tubes Metallizing Ceramic Part yog hais txog metallized ceramic insulating hlab thiab metallized ceramic qhov chaw, uas yog dav siv nyob rau hauv siab -voltage relays, nqus interrupters, hluav taws xob lub tshuab nqus tsev twj, X-ray raj thiab lwm yam teb.

 

Cov txheej metallized feem ntau yog nyob rau ntawm lub ntsej muag kawg ntawm lub raj ceramic los yog hauv cov chaw tshwj xeeb ntawm sab hauv thiab sab nrauv thiab siv rau vuam thiab sib khi nrog hlau flanges lossis electrode ua. Metallized Ceramics rau Cov Hluav Taws Xob Hluav Taws Xob yog cov ntsiab lus dav dav rau metallized ceramics rau cov khoom siv hluav taws xob, suav nrog ntau yam kev thov los ntawm siab -voltage contactors mus rau qis -voltage hluav taws xob hloov. Siab -Lub zog Metallized Ceramic Cheebtsam yog siab-lub zog metallized ceramic Cheebtsam uas hais txog lub zog sib txuas ntawm cov txheej metallized thiab ceramic matrix, feem ntau yog siv cov molybdenum-manganese txoj kev los yog active hlau brazing txoj kev los pab kom lub metallized txheej los tiv thaiv tensile los yog shear loads tsis tev tawm. HVDC contactor ceramic enclosure yog siab -voltage DC contactor ceramic kab noj hniav. Nws yog ib daim ntawv thov ntawm metallized ceramics nyob rau hauv lub tshav pob ntawm lub zog tshiab siab -voltage DC tiv thaiv. Nws txheej metallized yog siv rau kev txhim khu kev qha kev sib txuas nrog cov hlau sib txuas thiab kev sib khi npog. Nyob rau tib lub sijhawm, sab hauv ntawm cov kab noj hniav ceramic yuav tsum tiv taus ntev -lub sij hawm hlawv ntawm DC arcs. Precision Metallized Ceramics, los yog precision metallized ceramics, sawv cev rau kev lag luam cov qauv siab dua rau qhov ntev ntev, metallized txheej txoj hauj lwm raug thiab nto zoo. Lawv feem ntau yog siv hauv aerospace, cov cuab yeej kho mob thiab qib siab -kawg tswj kev lag luam.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Kev tsim cov txheej txheem ntawm ceramic metallization yog cov txheej txheem kev koom nrog ntau yam kev tswj xyuas kev sib txuas. Cov lus piav qhia hauv qab no yuav siv cov molybdenum-manganese metallization ntawm alumina ceramics raws li cov txheej txheem ntws. Kauj Ruam 1: Kev npaj ntawm ceramic matrix - Sib tov alumina hmoov nrog additives xws li binders, plasticizers, thiab dispersants los ua ib tug slurry, thiab tau ib tug ntsuab lub cev ntawm lub siab xav los ntawm daim kab xev casting, qhuav nias, los yog isostatic nias. Daim kab xev casting yog tsim rau zus tau tej cov loj-sized nyias tej hub substrates, qhuav nias yog haum rau me me thiab nruab nrab- loj tuab-walled qhov chaw, thiab isostatic nias yog haum rau tubular los yog tshwj xeeb- zoo li tus ceramic qhov chaw. Lub cev ntsuab yog qhuav thiab degummed (maj mam rhuab mus rau 400{11}}600℃kom tshem tawm cov organic teeb meem), thiab ces sintered nyob rau hauv ib tug high-kub rauv (alumina ceramics yog hais txog 1600-1700 degree) kom tau ib tug ntom ceramic matrix. Lub sintered ceramic matrix yuav tsum tau ua rau hauv av los yog peripheral ua tiav kom tau raws li qhov yuav tsum tau ua kom ntev ntev.

Kauj Ruam 2: Kev npaj ntawm metallized slurry - Nyhav molybdenum hmoov, manganese hmoov thiab additives (xws li silica, aluminium oxide, magnesium oxide thiab lwm yam fluxes) raws li cov mis, sib tov lawv, ntxiv cov organic carriers (terpineol, ethyl cellulose, thiab lwm yam) thiab grind kom muab tshuaj txhuam slurry nrog tsim nyog viscosity. Cov ntsiab lus ntawm cov khoom, qhov loj me thiab cov khoom rheological ntawm slurry ncaj qha cuam tshuam rau lub thickness, ceev thiab sintering shrinkage ntawm metallization txheej. Kauj Ruam 3: Metallization txheej txheej - Siv cov metallization slurry rau thaj tsam predetermined ntawm ceramic substrate siv tshuaj ntsuam luam ntawv, tshuaj tsuag, dipping los yog txhuam. Rau Metallized Ceramic Housing rau Fais Fab Semiconductors, kev tshuaj ntsuam luam ntawv feem ntau yog siv los ua kom muaj kev tswj xyuas meej ntawm cov duab thiab txoj hauj lwm ntawm thaj chaw metallized. Rau Metallized Ceramic Insulating Tubes Metallizing Ceramic Parts, metallization ntawm cov phab ntsa sab hauv lossis sab nrauv ntawm cov tubular feem ntau yog siv cov txheej txheem dip lossis txau cov txheej txheem, ua ke nrog cov cuab yeej tiv thaiv tshwj xeeb. Cov khoom coated yuav tsum tau qhuav hauv qhov cub (kwv yees li 100-150 degree) kom volatilize cov organic carrier.

 

Kauj Ruam 4: Thawj metallization sintering - Muab cov coated thiab qhuav ceramic qhov chaw rau hauv hydrogen- tiv thaiv cua sov rau siab - kub sintering. Qhov kub sintering feem ntau yog nyob nruab nrab ntawm 1300-1500℃(nyob ntawm tus qauv), thiab lub sijhawm tuav yog li 30-60 feeb. Thaum lub sij hawm sintering, molybdenum{15}}manganese hmoov raug sintering densification, thiab nyob rau tib lub sij hawm, lub iav theem migrate los ntawm molybdenum{16}}manganese txheej mus rau ceramic interface thiab reacts nrog cov alumina nyob rau hauv ceramic los ua ib tug hloov theem nrab theem. Lub luag haujlwm ntawm hydrogen cua yog txo cov oxide zaj duab xis ntawm cov hmoov hlau thiab txhawb kev ua haujlwm sintering. Tom qab sintering, txheej metallization tsim cov tshuaj muaj zog nrog cov ceramic matrix. Kauj Ruam 5: Nickel plating. Electroless npib tsib xee plating los yog electroplating nickel yog ua nyob rau saum npoo ntawm molybdenum manganese txheej tom qab thawj metallization thiab sintering. Nickel plating muaj ob lub hom phiaj: ib qho yog los tiv thaiv molybdenum-manganese txheej los ntawm oxidation, thiab lwm yam yog muab ib tug solderable nto (lub wettability ntawm solder rau npib tsib xee yog zoo dua li ntawm molybdenum-manganese txheej). Lub thickness ntawm cov nickel plating txheej feem ntau yog tswj ntawm 2-8 microns. Yog tias nws nyias dhau lawm, cov txheej txheem yuav yaj los ntawm cov solder thaum vuam. Yog tias nws tuab heev, nws yuav tshwm sim los ntawm kev ntxhov siab sab hauv.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Qhov zoo ntawm cov khoom siv ceramic metallized feem ntau cuam tshuam nrog cov ntsiab lus microscopic uas tuaj yeem pom nrog lub qhov muag liab qab lossis pom los ntawm kev sim yooj yim. Thawj yog qhov txuas ntxiv thiab adhesion lub zog ntawm txheej metallization - tso rau Metallized Ceramic Housing for Power Semiconductors nyob rau hauv lub teeb zoo thiab saib nws. Lub siab - txheej metallization zoo yuav tsum muaj cov xim hlau zoo nkauj, cov npoo ntshiab thiab ntse, thiab tsis pom tev lossis lwm yam tsis xws luag. Siv 3M daim kab xev los lo rau saum npoo ntawm txheej metallized thiab tev tawm sai sai. Yuav tsum tsis muaj hlau hais daig. Qhov thib ob yog qhov muab qhov tseeb ntawm qhov chaw metallized. Rau cov tubular qhov chaw xws li Metallized Ceramic Insulating Tubes Metalizing Ceramic Part, qhov dav uniformity thiab concentricity ntawm qhov kawg -lub ntsej muag metalized nplhaib ncaj qha txiav txim siab sealing kev ntseeg siab thaum vuam rau cov hlau flange. Kev sib txawv ntau dhau yuav ua rau lub zos tsis ua hauj lwm rau vuam los yog solder overflow. Qhov thib peb nthuav dav yog qhov zoo ntawm cov npib tsib xee plating txheej - cov txheej txheem npib tsib xee plating yuav tsum yog nyob rau hauv ib tug uniform matte los yog semi{13}} kaj lub xeev, tsis muaj pom tseeb xim txawv, pinholes los yog hlwv. Rau HVDC contactor ceramic enclosure, raus cov nickel{15}}plated ceramic kab noj hniav hauv tus qauv flux.

 

Tom qab muab nws tawm, saib xyuas tias qhov chaw metallized yuav tsum tau them tag nrho los ntawm cov flux thiab tsis muaj solder - cheeb tsam tsis lees paub, uas ncaj qha cuam tshuam txog cov solderability ntawm cov tom ntej soldering. Qhov thib plaub nthuav dav yog lub xeev ntawm cov ceramic matrix tom qab sintering - metallization thiab sintering undergo high-kub cycles saum 1300 degree, thiab qhov tsis ruaj tsis khov ntawm cov ceramic matrix yuav ua rau micro- tawg lossis warping. Muab Precision Metallized Ceramics tiaj tus rau ntawm lub platform marble thiab siv lub ntsuas ntsuas los xyuas qhov flatness; rau tubular qhov chaw, xyuas qhov parallelism ntawm ob lub ntsej muag kawg. Cov ntsiab lus kawg uas yooj yim saib yog tus ntoo khaub lig- ntu qauv ntawm txheej txheej metallization - saib tus ntoo khaub lig- ntu ntawm txheej txheej metallization los ntawm lub tshuab ntsuas metallographic. Cov txheej txheem metallization ntawm high{12}} cov khoom zoo yuav tsum yog tuab thiab tsis dhau los ntawm - qhov, thiab qhov cuam tshuam nrog cov ceramic substrate yuav tsum nthuav tawm cov canine - cov hniav sib txuas es tsis yog qhov sib txawv. Peb lub tuam txhab ua cov khoom-los ntawm- kev tshuaj xyuas cov khoom ntawm cov ntsiab lus saum toj no rau txhua pawg ntawm cov khoom siv ceramic metallized thiab khaws cov duab metallographic thiab cov ntaub ntawv txheeb xyuas kom ntseeg tau tias txhua yam khoom xa tuaj raws li engineering- qib yuav tsum tau ua.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Daim ntawv thov kev lag luam ntawm cov khoom siv ceramic metallization npog ntau thaj chaw los ntawm lub zog hluav taws xob mus rau lub zog tshiab, los ntawm aerospace mus rau cov khoom siv kho mob. Hauv kev lag luam hluav taws xob semiconductor, Metallized Ceramic Housing for Power Semiconductors yog ib qho tseem ceeb ntawm IGBT modules, MOSFET thiab diode ntim. IGBT modules tau dav siv nyob rau hauv zaus converters, hluav taws xob vuam tshuab, induction cua sov thiab rail transit traction systems. Lawv cov plhaub ceramic yuav tsum tau ua kom tau raws li cov kev xav tau ntawm high-voltage rwb thaiv tsev (tus nqi raug 1200V-6500V), siab thermal conductivity thiab tshav kub dissipation, thiab ntev -lub sij hawm thermal voj voog kev cia siab. Hauv kev xa hluav taws xob thiab kev xa tawm, HVDC contactor ceramic enclosure yog siv rau hauv cov khoom siv hluav taws xob hauv tsheb, cov tshuab hluav taws xob photovoltaic thiab DC faib cov khoom. High -voltage DC contactors yuav tsum tau ntseeg siab ua txhaum tam sim no nyob rau hauv DC tej yam kev mob. Lub metallization zoo ntawm cov kab noj hniav ceramic ncaj qha txiav txim siab huab cua nruj thiab arc extinguishing kev ua tau zoo ntawm tus contactor. Nyob rau hauv lub tshav pob ntawm hluav taws xob lub tshuab nqus tsev twj, Metalized Ceramic Insulating Tubes Metalizating Ceramic Part yog siv nyob rau hauv lub tshuab nqus tsev arc extinguishers (core Cheebtsam ntawm nruab nrab thiab high voltage Circuit Court breakers), mus ncig yoj hlab, magnetrons thiab X-ray raj.

 

Metalized ceramic qhov chaw yuav tsum tau ua kom ntev -lub sij hawm airtightness nyob rau hauv lub tshuab nqus tsev ib puag ncig. Lub porosity ntawm metallized txheej thiab vuam airtightness yog qhov tseem ceeb zoo ntsuas. Nyob rau hauv aerospace thiab tub rog teb, High-Strength Metallized Ceramic Cheebtsam yog siv nyob rau hauv missile seeker casings, satellite transponder substrates thiab aero-engine sensor ntim. Muaj cov kev xav tau siab heev rau cov ntaub ntawv 'siab kub tsis kam, cuam tshuam tsis kam thiab kev cia siab ntev ntev -. Hauv kev tswj hwm kev lag luam thiab hluav taws xob dav dav, Metallized Ceramics rau Cov Khoom Siv Hluav Taws Xob npog qis- cov khoom siv hluav taws xob hluav taws xob (xws li contactors, relays, thermostats), siab -voltage switches, gas discharge lamp starters and spark plugs. Hauv cov khoom siv kho mob, Precision Metallized Ceramics yog siv rau hauv pub{11}}los ntawm cov khoom sib txuas rau cov khoom siv kho mob implantable (xws li pacemakers, neurostimulators), CT detectors thiab laser surgical instruments, uas yuav tsum tau txheej metallization kom biocompatible thiab muaj peev xwm xeem dhau nruj sterilization xeem.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Peb muabAlumina Metallized Ceramicsib qho - nres kev pabcuam los ntawm ceramic molding, precision sib tsoo, molybdenum manganese method/AMB metallization, npib tsib xee plating rau vuam sib dhos. Pab neeg ua haujlwm engineering tuaj yeem ua tiav cov txheej txheem tsim qauv sai sai raws li koj qhov voltage, qhov xav tau ntawm huab cua nruj thiab qhov ntsuas qhov sib txuas. Txais tos kom xa cov duab kos lossis cov kev qhia tshwj xeeb rau kev soj ntsuam cov txheej txheem thiab cov qauv docking.