4J42yog ib qho hlau-nickel ruaj khov expansion alloy, feem ntau yog ua los ntawm hlau (Fe) thiab nickel (Ni), nrog rau cov nickel ntsiab lus ntawm li 41% txog 42%. Tsis tas li ntawd, nws kuj muaj me ntsis ntawm cov ntsiab lus xws li silicon (Si), manganese (Mn), carbon (C), thiab phosphorus (P). Cov tshuaj lom neeg tshwj xeeb no ua rau nws muaj kev ua tau zoo heev.

Thaum pib ntawm lub xyoo pua 20th, nrog rau kev nce qib ntawm cov thev naus laus zis hluav taws xob, aerospace thiab lwm yam teb, cov kev xav tau siab dua tau muab tso rau pem hauv ntej rau cov khoom thermal nthuav dav thiab cov khoom siv kho tshuab ntawm cov ntaub ntawv, thiab cov kws tshawb fawb tau pib tshawb nrhiav cov ntaub ntawv alloy nrog cov khoom tshwj xeeb. Raws li cov hlau-nickel-cobalt alloy, kev tshawb fawb thiab kev txhim kho ntawm 4J42 expansion alloy yog kom tau raws li cov kev xav tau ntawm cov teb no rau kev ua tau zoo ntawm cov khoom siv. Los ntawm kev kho cov ntsiab lus ntawm cov ntsiab lus xws li nickel, hlau, thiab cobalt tas li, qhov kwv yees ntawm 4J42 alloy tau txiav txim siab maj mam, thiab tib neeg kuj tau pib tau txais cov ntawv thov ua ntej hauv qee qhov teb uas muaj cov kev xav tau siab rau kev ua tau zoo ntawm cov ntaub ntawv.

Nrog rau kev nce qib ntawm kev tshawb fawb thiab thev naus laus zis, qhov yuav tsum tau ua kom tau zoo rau 4J42 expansion alloy kuj tau nce siab dua thiab siab dua. Cov kws tshawb fawb txuas ntxiv txhim kho kev ua tau zoo ntawm 4J42 alloy los ntawm kev txhim kho cov txheej txheem tsim khoom thiab ua kom zoo dua cov khoom sib xyaw. Piv txwv li, kev siv cov thev naus laus zis smelting thiab cov thev naus laus zis ua tiav tau txhim kho qhov huv thiab kev sib xws ntawm cov hlau, thiab txo qhov cuam tshuam ntawm cov khoom tsis huv rau kev ua tau zoo ntawm cov hlau. Tib lub sijhawm, cov txheej txheem kho cua sov thiab cov txheej txheem vuam ntawm 4J42 alloy kuj tau kawm tob, thiab ntau cov txheej txheem kev tshawb fawb thiab tsim nyog tau tsim los txhim kho kev ua tau zoo thiab kev siv kev ua tau zoo ntawm cov hlau.

Nyob rau xyoo tas los no, nrog rau kev loj hlob sai ntawm cov khoom siv hluav taws xob, aerospace, kev kho mob thiab lwm yam teb, qhov kev thov rau 4J42 expansion alloy tau txuas ntxiv mus ntxiv, thiab daim ntawv thov tau txuas ntxiv mus nthuav dav. Hauv thaj chaw ntawm cov khoom siv hluav taws xob, nrog rau kev txhim kho tas mus li ntawm cov integrated circuits, semiconductor devices, thiab lwm yam, qhov kev xav tau rau cov ntaub ntawv ntim khoom tau nce siab thiab siab dua. 4J42 alloy tau dhau los ua cov khoom siv tseem ceeb hauv thaj chaw ntawm cov khoom siv hluav taws xob vim nws qhov kev ua tau zoo thermal expansion thiab kev ua haujlwm vuam.

Nrog rau kev nce qib ntawm thev naus laus zis ntau lawm, yuav muaj kev saib xyuas ntau dua rau kev txhim kho qhov huv ntawm cov hlau thiab txo cov ntsiab lus ntawm cov khoom tsis huv yav tom ntej. Qhov no yuav txhim kho qhov ruaj khov ntawm cov hlau, txo cov kev hloov pauv ntawm kev ua haujlwm los ntawm cov khoom tsis huv, thiab txhim kho kev ntseeg siab ntawm cov hlau hauv cov ntawv thov siab. Piv txwv li, hauv kev ntim khoom hluav taws xob, cov hlau 4J42 uas muaj qhov huv siab dua tuaj yeem ua kom muaj kev ruaj khov mus sij hawm ntev thiab kev ua tau zoo ntawm cov khoom hluav taws xob.