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首页> 外文期刊>ISIJ international >A MgO–SiO2–Al2O3–ZnO Ceramic-glass Coating to Improve the Anti-oxidation of Carbon Steel at High Temperature
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A MgO–SiO2–Al2O3–ZnO Ceramic-glass Coating to Improve the Anti-oxidation of Carbon Steel at High Temperature

机译：MgO-SiO 2 -Al 2 O 3 -ZnO陶瓷玻璃涂层改善高温下碳钢的抗氧化性能

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摘要

In this paper, a MgO–SiO_(2)–Al_(2)O_(3)–ZnO ceramic-glass coating sprayed on carbon steel was studied at high temperature. The property of the MgO–SiO_(2)–Al_(2)O_(3)–ZnO ceramic-glass coating was analyzed in a range of 900°C and 1150°C a share. The experimental results indicated that the MgO–SiO_(2)–Al_(2)O_(3)–ZnO coating exhibited powerful anti-oxidation property for carbon steel. The MgO–SiO_(2)–Al_(2)O_(3)–ZnO coating could improve the anti-oxidation performance of carbon steel by 84% at 1050°C for 60 min. The Ea of blank and coated samples were 108.65 and 202.55 kJ/mol, respectively. The k_(p) of the blank sample (0.61 mg~(2)·cm~(?4)·s~(?1)) was 7.6 times as much as that of coated sample (0.08 mg~(2)·cm~(?4)· s~(?1)). It demonstrated the coating slowed down oxidation reaction rate and then improved the anti-oxidation performance of carbon steel. The possible protection mechanisms of the MgO–SiO_(2)–Al_(2)O_(3)–ZnO ceramic-glass coating were also investigated using the SEM-EDS, XRD and TG-DTA characterization methods. The mixture formed between the coating and steel substrate (such as MgFe_(2)O_(4), ZnFe_(2)O_(4), MgSiO_(3), FeSiO_(4), ZnSiO_(4), SiO_(2), Al_(2)O_(3), and (Fe_(x)Mg_(1?x))_(2)SiO_(4) (x=0.4, 0.85, 0.94)) played a role in blocking the spread of ions and improved the oxidation resistance of carbon steel during heating treatment. The synergy of the formed Al, Mg and Zn compound layers in the coating could also block spread of oxygen and iron ions and exert an influence on enhancing anti-oxidation property.
机译：本文研究了在高温下喷涂在碳钢上的MgO–SiO_（2）–Al_（2）O_（3）–ZnO陶瓷玻璃涂层。分别在900°C和1150°C的范围内分析了MgO–SiO_（2）–Al_（2）O_（3）–ZnO陶瓷玻璃涂层的性能。实验结果表明，MgO–SiO_（2）–Al_（2）O_（3）–ZnO涂层对碳钢具有强大的抗氧化性能。 MgO–SiO_（2）–Al_（2）O_（3）–ZnO涂层在1050°C下60分钟可将碳钢的抗氧化性能提高84％。空白样品和涂覆样品的Ea分别为108.65和202.55 kJ / mol。空白样品（0.61 mg〜（2）·cm〜（？4）·s〜（？1））的k_（p）是涂布样品（0.08 mg〜（2）的7.6倍。 ）·cm〜（？4）·s〜（？1））。结果表明，涂​​层减缓了氧化反应速度，提高了碳钢的抗氧化性能。还使用SEM-EDS，XRD和TG-DTA表征方法研究了MgO–SiO_（2）–Al_（2）O_（3）–ZnO陶瓷玻璃涂层的可能保护机理。涂层和钢基材之间形成的混合物（例如MgFe_（2）O_（4），ZnFe_（2）O_（4），MgSiO_（3），FeSiO_（4），ZnSiO_（4），SiO_（2）， Al_（2）O_（3）和（Fe_（x）Mg_（1？x））_（2）SiO_（4）（x = 0.4、0.85、0.94）起到阻止离子扩散的作用改善了碳钢在热处理过程中的抗氧化性。涂层中形成的Al，Mg和Zn化合物层的协同作用还可以阻止氧和铁离子的扩散，并对增强抗氧化性能产生影响。

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