Corrosion-resistant Properties ntawm Molybdenum

◼ Cov khoom tiv thaiv corrosion ntawm molybdenum yog qhov nyuaj los hloov. Nyob rau hauv cov nqe lus ntawm cov khoom hlau, molybdenum daim ntawv thov yog tsuas yog raws li nws cov corrosion kuj. Cov khoom siv hlau corrosion-resistant xws li stainless hlau, nickel-based alloys thiab reactive hlau. ◼ Molybdenum txhim kho pitting kuj ntawm stainless hlau thiab npib tsib xee-raws li alloys. Cov hlau stainless feem ntau muaj tsawg kawg yog 10.5% chromium, nce chromium cov ntsiab lus tuaj yeem muab cov yeeb yaj kiab tuab dua los tiv thaiv qhov xeb, tab sis pitting corrosion yog qhov nyuaj los tiv thaiv, raws li kev tshawb fawb cuam tshuam, txhawm rau kom ntseeg tau. Cov khoom siv kho tshuab thiab lub cev ntawm cov hlau tsis muaj steel nyob rau hauv qhov chaw ntawm qhov sib ntxiv ntawm qhov tsim nyog ntawm molybdenum tuaj yeem txhim kho kev tiv thaiv pitting corrosion, xws li 316L, bi-directional stainless hlau, austenitic stainless hlau thiab lwm yam. Nickel-based alloys muaj kev tiv thaiv zoo tshaj plaws ntawm cov hlau tsis muaj steel thiab feem ntau muaj li 3.0% molybdenum rau tib yam li austenitic, duplex thiab super duplex stainless hlau, uas tuaj yeem txhim kho pitting tsis kam. ◼ Reactive hlau yog kim los yog kuj txwv nyob rau hauv ib puag ncig. Cov hlau ua si feem ntau yog titanium, tantalum, thiab lwm yam. Titanium yog nquag mus rau corrosion, thiab cov ntawv thov titanium txias rau 300 degree, zirconium, tantalum corrosion kuj muaj zog, tab sis tus nqi yog kim, thiab feem ntau ntawm cov hlau nquag siv tsis tuaj yeem siv nyob rau hauv ib puag ncig uas muaj fluorine, kev siv cov kev txwv.