Forged tungsten molybdenum

cov khoom siv

electronics lag luam

Rau yav tom ntej thermal conductivity, ib tug tswj coefficient ntawm thermal expansion thiab koj cov ntaub ntawv kev coj dawb huv. Zoo kawg nkaus ntshiab: Peb cov khoom rau cov electronics kev lag luam muaj kev tshwj xeeb heev lub zog. Siv li puag daim hlau thiab tshav kub spreaders, lawv kom cov cia siab rau ntawm hluav taws xob khoom.

Thaum xub thawj siab ib muag, qhov tseeb hais tias hluav taws xob Cheebtsam tsim thaum tshav kub kub yuav tsis zoo li ua tau dab tsi txhawj txog. Niaj hnub no, suab tej schoolchild yuav qhia rau koj tias qhov chaw ntawm ib tug computer tau sov so thaum nws yog switched. Thaum tus ntaus ntawv yog kev khiav hauj lwm, ib tug kev faib ua feem ntawm cov khoom hluav taws xob lub zog yog poob raws li thaum tshav kub kub. Tab sis qhia rau peb coj ib tug los ze zog saib: Lub hloov lwm lub thaum tshav kub kub kuj muaj peev xwm qhia raws li thaum tshav kub kub flux ib chav tsev (ntawm) cheeb tsam (thaum tshav kub kub flux ceev). Raws li cov piv txwv nyob rau hauv lub teeb ua piv txwv, lub tshav kub flux ceev nyob rau hauv ntau hluav taws xob Cheebtsam yuav tsum extreme. Raws li high school raws li nyob rau hauv ib tug foob pob ua ntxaij nozzle caj pas nyob rau hauv uas kub raws li high school raws li 2 800 ° C tej zaum yuav tshwm sim.

Lub coefficient ntawm thermal expansion yog lwm tseem ceeb rau tag nrho cov semiconductors. Yog hais tias lub semiconductor thiab puag phaj cov ntaub ntawv uas nthuav thiab daim ntawv cog lus txawv cov nqi thaum raug rau cov kev hloov nyob rau hauv kub ces txhua yam txhawj xeeb tshwm sim. Cov no tej zaum puas semiconductor los yog tsis tau cov kev twb kev txuas ntawm lub nti thiab lub tshav kub spreader. Txawm li cas los, nrog peb cov ntaub ntawv, koj paub tias koj muaj nyob rau hauv kev ruaj ntseg ob txhais tes. Peb cov ntaub ntawv muaj cov optimum coefficient ntawm thermal expansion kev koom semiconductors thiab ceramics.

Electronics-kev lag luam

Raws li semiconductor puag daim hlau, piv txwv li, peb ntaub ntawv no yog siv nyob rau hauv cov cua turbines, u thiab muaj kev siv. Nyob rau hauv hwj chim semiconductor modules rau inverters (thyristors) thiab lub hwj chim diodes, lawv ua si ib tug tseem ceeb luag hauj lwm. Yog vim li cas? Tsaug rau lawv zoo coefficient ntawm thermal expansion thiab zoo heev thermal conductivity, semiconductor puag daim hlau rau muaj zog puag rau lub sensitive silicon semiconductor thiab xyuas kom meej ib tug module kev pab cuam lub neej ntawm ntau tshaj 30 xyoo.

Thaum tshav kub kub spreaders thiab puag daim hlau ua los ntawm molybdenum, tungsten, MoCu, WCu, Cu-MoCu thiab Cu-MoCu-Cu laminates nti dissipate lub tshav kub generated nyob rau hauv hluav taws xob Cheebtsam. Qhov no ob tiv thaiv lub overheating ntawm hluav taws xob pab kiag li lawm thiab tsub kom cov khoom lifetimes. Peb tshav kub spreaders pab muaj ib tug txias ib puag ncig, piv txwv li, nyob rau hauv IGBT modules, RF pob khoom los yog LED chips. Peb tau tsim ib tug tshwj xeeb heev MoCu puas khoom rau cov cab kuj paib nyob rau hauv LED chips. Qhov no muaj ib tug coefficient ntawm thermal expansion zoo ib yam li sapphire thiab ceramics.

Peb muab peb cov khoom rau cov electronics kev lag luam nrog ib tug ntau yam ntawm coatings. Lawv tiv thaiv cov ntaub ntawv tiv thaiv corrosion thiab txhim kho lub solder kev twb kev txuas ntawm lub semiconductor thiab peb cov ntaub ntawv uas.



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