Corrosion performance of atmospheric plasma sprayed alumina coatings on AZ31B magnesium alloy under immersion environment

Thirumalaikumarasamy, D.; Shanmugam, K.; Balasubramanian, V.

doi:10.1016/j.jascer.2014.08.006

Cited by 26 publications

(8 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…If there are numerous insignificant model terms, then the model reduction can boost the model’s performance. F-value of 1.99 corroborates that the Lack of Fit is not considered as significant related to the pure error 44 . There is a 22.92% chance that a Lack of Fit F-value at this quantity might take place because of noise.…”

Section: Resultsmentioning

confidence: 64%

Extraction of ingredients from tea leaves using oxidative enzymatic reaction and optimization of extraction conditions

Pelalak

Khan

Zare

et al. 2021

Sci Rep

View full text Add to dashboard Cite

Peroxidase (POD) and polyphenol oxidase (PPO) are used as biocatalyst in many processes such as oxidization reactions, wastewater treatment, phenol synthesis and so on. The purpose of current study is enzymes extraction from biomass (tea leaves) as well as evaluation of their activation. Different parameters including temperature, buffer concentration, buffer type, buffer/tea leaves ratio, addition of high molecular weight polymers and emulsifiers, and pH were optimized in order to obtain the highest enzymes activity. Response Surface Methodology (RSM) procedure is employed for statistical analysis of enzymes extraction. It is understood from the result that PPO and POD possess the highest activity at temperatures of 25 °C and 50 °C, pH 7 and 5, buffer molarity of 0.1, and 0.05, buffer/tea leaves ratio = 5 for both, contact time = 20 min and 10 min, and presence of 6% and 3% PVP, 5% and 0% Tween 80 for PPO and POD, respectively. Amounts of highest activity for PPO and POD biocatalysts were calculated 0.42 U/mL and 0.025493 U/mL, respectively. Moreover, the entire inactivation of PPO took place after 30 min at 40 °C and 60 °C and 20 min at 80 °C. However, POD lost 35% of its activity after 30 min at 40 °C and 60 °C. The amount of 6% POD activity was kept after 45 min at 80 °C. Generally, it was indicated that POD was more resistant to thermal treatment than PPO.

show abstract

Section: Resultsmentioning

confidence: 64%

Extraction of ingredients from tea leaves using oxidative enzymatic reaction and optimization of extraction conditions

Pelalak

Khan

Zare

et al. 2021

Sci Rep

View full text Add to dashboard Cite

show abstract

“…A wide range of techniques, such as chemical conversion coating , physical vapor deposition (Ref 9, 10), spraying (Ref [11][12][13], plating (Ref [14][15][16], and laser surface modification ( Ref 17,18), have been employed to improve the corrosion resistance of Mg and its alloys. But recent studies have focused on the MAO process (Ref .…”

Section: Introductionmentioning

confidence: 99%

Effect of KOH Concentration on the Microstructure and Electrochemical Properties of MAO-Coated Mg Alloy AZ31B

Fattah‐alhosseini

Joni

2015

J. of Materi Eng and Perform

View full text Add to dashboard Cite

In this study, the effect of KOH concentration on the electrochemical properties of micro-arc oxidation (MAO) coated Mg alloy AZ31B has been investigated. Also, the surface morphology and chemical composition of the MAO coatings have been characterized by scanning electron microscopy and x-ray diffraction. In MAO process, an increase in the concentration of KOH as a result of increase in the electrolyte electrical conductivity leads to a reduction in sparking which in turn improves the quality and the behavior of anodic coatings in the concentration of 2.5 M. Moreover, it can be concluded that the MAO coating shows its best protective behavior when KOH concentration is equal 2.5 M, and if the concentration is higher or lower than this value, the protective properties of MAO coating will decrease.

show abstract

“…Taking an example of alumina (Al 2 O 3 ) coatings sprayed onto steel substrates using thermally sprayed techniques, have been used in aircraft parts because of their wear resistance properties (Thirumalaikumarasamy et al 2014). Figures 3.50 and 3.51 shows some of the manufacturing features and defect in thermally sprayed coatings (air plasma spray-APS and high-velocity oxy-fuel-HVOF).…”

Section: Defects During the Manufacturing Processmentioning

confidence: 99%

Defect Types

Faisal

Cora

Bekci

et al. 2021

Structural Health Monitoring Damage Detection Systems for Aerospace

View full text Add to dashboard Cite

This chapter provides an overview of the common types of defects found in various structural materials and joints in aircraft. Materials manufacturing methods (including large-scale production) have been established in the aircraft industry. However, as will be seen in this chapter, manufacturing defects and defects during in-service conditions are very common across all material types. The structural material types include metals, composites, coatings, adhesively bonded and stir-welded joints. This chapter describes the defect types as a baseline for the description of their detection with the methods of Chap. 10.1007/978-3-030-72192-3_5 to 10.1007/978-3-030-72192-3_8. Based on the understanding of the defect types, there is great expectation for a technical breakthrough for the application of structural health monitoring (SHM) damage detection systems, where continuous monitoring and assessment with high throughput and yield will produce the desired structural integrity.

show abstract

Corrosion performance of atmospheric plasma sprayed alumina coatings on AZ31B magnesium alloy under immersion environment

Cited by 26 publications

References 35 publications

Extraction of ingredients from tea leaves using oxidative enzymatic reaction and optimization of extraction conditions

Extraction of ingredients from tea leaves using oxidative enzymatic reaction and optimization of extraction conditions

Effect of KOH Concentration on the Microstructure and Electrochemical Properties of MAO-Coated Mg Alloy AZ31B

Defect Types

Contact Info

Product

Resources

About