1. Core Matrix Elements
Lub core matrix yog tsim los ntawmnpib tsib xee (Ni)thiabtooj liab (Cu), nrog npib tsib xee ua lub hauv paus ntsiab lus (sau nyiaj rau 60% -70%) thiab tooj liab ua cov ntsiab lus tseem ceeb thib ob (sau nyiaj rau 28% - 34%). Lwm yam kab kawm muaj xws li hlau (Fe, Tsawg dua lossis sib npaug li 2.5%), manganese (Mn, Tsawg dua lossis sib npaug li 2%), silicon (Si, Tsawg dua lossis sib npaug li 1%), thiab lwm yam.
Lub core matrix yognpib tsib xee (Ni)(raws li lub hauv paus ntsiab lus, accounting rau 40%–60%), ntxiv los ntawm siab -cov ntsiab luschromium (Cr)thiabMolybdenum (Mo). Cov qib Hastelloy sib txawv tau hloov kho raws li cov txheej txheem tseem ceeb no, thiab qee qib kuj ntxiv tungsten (W), hlau (Fe), cobalt (Co) thiab lwm yam khoom kom ua tau zoo.
Hastelloy C276: Ni (sib npaug), Cr (14.5%–16.5%), Mo (15.0%–17.0%), W (3.0%–4.5%), Fe (4.0%–7.0%).
Hastelloy B2: Ni (sib npaug), Mo (26.0%–30.0%), Fe (Less dua los yog sib npaug rau 2.0%), Cr (Less dua los yog sib npaug rau 1.0%).
2. Cov ntsiab lus tseem ceeb sib txawv
Monel alloys cia siab rau Ni-Cu binary system kom ua tiav kev tiv thaiv corrosion, tshwj xeeb tshaj yog nyob rau hauv dej hiav txwv, hydrofluoric acid thiab lwm yam xov xwm.
Hastelloy alloys rely on the synergistic effect of Cr, Mo and W to form a dense passivation film on the surface, thus obtaining excellent corrosion resistance to strong oxidizing media, reducing media and mixed acids, which is far superior to Monel alloys in harsh corrosive environments.
