A revised method for estimating oxide basicity per the smith scale, with example application to glass durability

Reynolds, Jacob G.

doi:10.1016/j.solidstatesciences.2011.07.005

Solid State Sciences

2011

DOI: 10.1016/j.solidstatesciences.2011.07.005

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A revised method for estimating oxide basicity per the smith scale, with example application to glass durability

Jacob G. Reynolds

Abstract: Previous researchers have developed correlations between oxide electronegativity and oxide basicity.The present paper revises those correlations using a newer method of calculating electronegativity of the oxygen anion. Basicity is expressed using the Smith a parameter scale. A linear relation was found between the oxide electronegativity and the Smith a parameter, with an R2 of 0.92. An example application of this new correlation to the durability of high-level nuclear waste glass is demonstrated.The durabili… Show more

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Cited by 3 publications

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“…Electronegativity is also an important factor for the oxides properties. SiO 2 flux have more electronegativity than TiO 2 flux[34], due to which oxides flux dissociation attract more electron in the outer region of the arc column compared to the center which lead to…”

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Develop a sustainable welding procedure for chromium manganese austenitic stainless steel using the ATIG process

Patel

Jani

Singh³

et al. 2021

Eng. Res. Express

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Chromium manganese austenitic stainless steel is exhibiting an admirable amalgamation of higher strength and stress corrosion resistance. This economical steel is developed to fulfill the requirement of a variety of consumers for high temperature and structural applications. Hitherto, the limitation associate with the TIG welding process is a low depth of penetration which reduces productivity. Activated tungsten inert gas welding (ATIG) is the best suitable option to overcome this problem and satisfy the sustainable welding requirement. Welding procedure has been developed for chromium manganese austenitic stainless steel during ATIG welding using a box behken design (BBD) to improve penetration depth and productivity. The activated flux using SiO2 and TiO2 flux indicates improvement in penetration 5.3 mm and 5.1 mm as compared to TIG welding. The ATIG welded test coupon has strength and hardness of 495 MPa and 195 HV when using SiO2 flux, and 487 MPa and 190 HV when using TiO2 flux, compared to 435 MPa and 165 HV for the TIG welded test coupon. ATIG welds have higher strength and hardness because of their finer grain size when compared to TIG welded test coupons.

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confidence: 99%

Develop a sustainable welding procedure for chromium manganese austenitic stainless steel using the ATIG process

Patel

Jani

Singh³

et al. 2021

Eng. Res. Express

View full text Add to dashboard Cite

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Stabilization of Mesoporous Iron Oxide Films against Sintering and Phase Transformations via Atomic Layer Deposition of Alumina and Silica

Kraffert

Karg

Schmack

et al. 2018

Adv Materials Inter

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The stabilization of crystal phases and nanostructured morphologies is an essential topic in application‐driven design of mesoporous materials. Many applications, e.g. catalysis, require high temperature and humidity. Typical metal oxides transform under such conditions from a metastable, low crystalline material into a thermodynamically more favorable form, i.e. from ferrihydrite into hematite in the case of iron oxide. The harsh conditions induce also a growth of the crystallites constituting pore walls, which results in sintering and finally collapse of the porous network. Herein, a new method to stabilize mesoporous templated metal oxides against sintering and pore collapse is reported. The method employs atomic layer deposition (ALD) to coat the internal mesopore surface with thin layers of either alumina or silica. The authors demonstrate that silica exerts a very strong influence: It shifts hematite formation from 400 to 600 °C and sintering of hematite from 600 to 900 °C. Differences between the stabilization via alumina and silica are rationalized by a different interaction strength between the ALD material and the ferrihydrite film. The presented approach allows to stabilize mesoporous thin films that require a high crystallization temperature, with submonolayer quantity of an ALD material, and to apply mesoporous materials for high temperature applications.

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Augmentation in depth of penetration of hastelloy C-22 by FATIG welding

Patel

Jani

Dm³

2022

Advances in Industrial and Manufacturing Engineering

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A revised method for estimating oxide basicity per the smith scale, with example application to glass durability

Cited by 3 publications

References 24 publications

Develop a sustainable welding procedure for chromium manganese austenitic stainless steel using the ATIG process

Develop a sustainable welding procedure for chromium manganese austenitic stainless steel using the ATIG process

Stabilization of Mesoporous Iron Oxide Films against Sintering and Phase Transformations via Atomic Layer Deposition of Alumina and Silica

Augmentation in depth of penetration of hastelloy C-22 by FATIG welding

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