Silicon manganese nitride yog ib qho khoom siv tseem ceeb hauv kev lag luam steel. Nws yog ntxiv raws li deoxidizer thiab alloying ntsiab additive thaum smelting los txhim kho cov hlau zoo thiab nce nws hardness, ductility, toughness, thiab anti-hnav muaj peev xwm. Qhov loj feem ntawm manganese nyob rau hauv silicon manganese nitride yog 40% -50%, qhov loj feem ntawm silicon yog 20% -30%, thiab qhov loj feem ntawm tag nrho cov hlau yog li 15%.
Txhawm rau ntsuas cov kab ntawm manganese hauv silicon manganese nitride, txoj hauv kev tseem ceeb yog siv atomic absorption spectrometry, ICP-AES txoj kev, siv cov yam ntxwv ntawm silicon manganese nitride kom yooj yim soluble hauv phosphoric acid thiab perchloric acid. Tom qab dissolving tus qauv, siv sulfate Cov txheej txheem hlau hlau yog siv los txiav txim siab cov ntsiab lus manganese. Tsis tas li ntawd, feem ntau cov kev sim tau ua pov thawj tias cov yam ntxwv uas cuam tshuam rau cov ntsiab lus ntawm manganese hauv silicon manganese nitride muaj xws li cua sov, lub sij hawm haus luam yeeb, tus nqi ntawm perchloric acid, thiab tus nqi ntawm phosphoric acid. Txhawm rau txo qhov kev ntsuas qhov yuam kev, qhov ntau npaum ntawm phosphoric acid yog 20ml, qhov ntau npaum ntawm perchloric acid yog 2ml, lub sijhawm haus luam yeeb yog 230s, thiab cua sov yog 240 degrees Celsius. Txoj kev no los txiav txim siab cov ntsiab lus manganese hauv silicon manganese nitride yog qhov yooj yim thiab yooj yim.
Nyob rau hauv cov hlau molten ntxiv nrog silicon manganese nitride, nitrogen cov ntsiab lus tseem yuav ntxiv tusyees rau hauv cov hlau molten. Thaum lub sij hawm dov txheej txheem, nitrogen precipitates nyob rau hauv lub grain ciam teb los tsim nitrogen-carbon thiab lwm yam tebchaw, uas plays lub luag hauj lwm nyob rau hauv refinement, ntxiv dag zog rau thiab kev daws teeb meem. Qhov no zoo heev txhim kho lub zog tawm los thiab tensile lub zog ntawm cov hlau, kom ntseeg tau tias cov yas thiab tawv tawv ntawm cov hlau tsis raug txo, thaum ua kom muaj kev ua tau zoo. Nws plays lub luag haujlwm tseem ceeb hauv smelting siab nqi-ntxiv steels. Yog li ntawd, nws ua lub luag haujlwm tseem ceeb hauv kev tshuaj xyuas metallurgical ntawm ferroalloys thiab steels. Kev txiav txim siab ntawm nitrogen plays lub luag haujlwm tseem ceeb. Muaj ob pawg loj ntawm kev txiav txim siab nitrogen, cov txheej txheem tshuaj thiab cov cuab yeej siv. Cov txheej txheem tshuaj yog steam distillation acid-base titration method thiab steam distillation absorption photometry method, thiab cov kev ntsuas muaj xws li lub tshuab nqus tsev fusion micro-siab txoj kev thiab pulse inert gas fusion thermal conductivity txoj kev. Cov txheej txheem tshuaj muaj kev ua haujlwm nyuaj thiab lub sijhawm ua haujlwm ntev, thaum lub sijhawm ntsuas kev ntsuas muaj qhov zoo ntawm kev ua tiav ntawm cov khoom sib xyaw nitrogen, cov txiaj ntsig raug, kev soj ntsuam ceev ceev, kev ua haujlwm siab, thiab cov cuab yeej siv qis, thiab siv dav hauv kev lag luam.
