WebApr 8, 2024 · Alumina-forming austenitic (AFA) steel is an advanced high-temperature-resistant stainless steel. The steel forms Al 2 O 3 and Cr 2 O 3 double oxide films at … Eight groups of experimental steel samples with different Cr contents marked as W1, W2, W3, W4, W5, W6, W7, and W8 were prepared. The compositions of these samples are shown in Table 2. They were prepared by vacuum melting and then casting into round ingots, followed by 1-h homogenization at 1200 °C. The … See more The dry–wet cycle experiment is generally considered as one of the more efficient methods for simulating atmospheric corrosion because of its similarity with the actual outdoor corrosion45,46. Each cycle of the wet/dry … See more Electrochemical tests were performed using a M2273 electrochemical workstation and a three-electrode system, where the samples were used as the working electrodes, a Pt plate as the counter electrode, … See more Surface and cross-sectional morphologies of the samples were observed using a KEYENCE VX-200 stereomicroscope and a FEI Quanta250 SEM. Their rust layers were analyzed with an EDS. The phases in the corrosion … See more Atomic force microscope (Multimode 8, Bruker) is used in the KPFM measurements. The equipment was located in a clean room at a constant temperature of 25 °C and an ambient relative humidity of … See more
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WebMar 12, 2024 · Effect of chromium in steel Chromium greatly enhances the strength, hardness, and wear resistance of structural steel and tool steel, giving the steel good oxidation and corrosion resistance. As a … WebAug 1, 2024 · The stability of chromium in stainless steel slag has a positive correlation with spinel particle size and a negative correlation with the calcium content of the spinel. The effect of heating time on the precipitation of spinel crystals in the CaO-SiO2-MgO-Al2O3-Cr2O3-FeO system was investigated in the laboratory. Scanning electron microscopy … peripheral nystagmus direction
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WebMar 3, 2024 · When the carbon content in steel is below 0.8%, the strength and hardness of the steel increase with the addition of carbon content, while the plasticity and toughness decrease. However, when the carbon … WebJun 30, 2008 · The materials used in this work were Fe–Cr based model alloys with 2.5%Cr (2.36 wt% Cr), 5%Cr (4.62 wt%Cr), 9%Cr (8.39 wt%Cr) and 12%Cr (11.62 wt%Cr) … WebHigh-temperature properties. Adding nickel gives the austenitic alloys of stainless steel significantly greater high-temperature strength than other alloys, particularly the ability to … peripheral obliterative arteriopathy