Effect of firing temperature on microstructure and dielectric properties of chromium oxide based glass composite thick films on stainless steel substrate

Shirke, Ghanasham D.; Umarji, Govind; Tarale, Arjun R.; Mathe, V. L.; Mulik, Uttam; Rane, Sunit

doi:10.1007/s10854-018-9028-x

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2020

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“…Moreover, with the increase of complexity in composition, the crystallization of the glasses is changed. Hence, a series of heat treatments is required [ 22 ]. The difficulty with heat treatments also lies in accurate control of the temperature for the complex-shaped workpiece.…”

Section: Introductionmentioning

confidence: 99%

Effect of SiO2–Al2O3 Glass Composite Coating on the Oxidation Behavior of Ti60 Alloy

Chen

Liu

et al. 2020

Materials

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A SiO2–Al2O3 glass composite coating was prepared on Ti60 alloy via air spraying slurry and then a suitable baking process. It was composed of potassium silicate glass, alumina and quartz powders. The high temperature oxidation performance of the alloy with and without coating was evaluated in static air at both 800 °C and 900 °C. The results show that catastrophic oxidation occurs for Ti60 bare alloy. It had a mass gain of about 2 mg/cm2 after oxidation at 800 °C and 17 mg/cm2 at 900 °C for 100 h. On the contrary, the oxidation resistance of alloy coated with composite coating was much improved with the mass gain about 0.36 mg/cm2 and 0.95 mg/cm2 at 800 °C and at 900 °C, respectively. The microstructure evolution of the composite coating and the alloy was analyzed by scanning electron microscope and electron probe microanalyzer. The effect of the composite coating on the oxidation performance of the alloy is discussed especially in terms of oxygen diffusion and interfacial reaction.

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Section: Introductionmentioning

confidence: 99%