Engineering and Technology Journal

Studying and Modeling the Effects of Quartz Addition and Heat Treatment on Mechanical Properties of Glass-Ceramic Coating

Ali H. Ataiwi; Ibtihal A. Mahmood; Jabbar H. mohmmed

Volume 32, Issue 7 , August 2014, , Page 1811-1824

https://doi.org/10.30684/etj.32.7A15

Abstract

In this work, a new glass-ceramic coating has been developed and applied, as a single coat without prior chemical treatment of the surface, using the dipping technique on metal substrate. ... Read More ...

Wear Resistance of a New Glass Ceramic Coating

Jabbar H. mohmmed; Ibtihal A. Mahmood; Ali H. Ataiwi

Volume 32, Issue 6 , July 2014, , Page 1472-1484

https://doi.org/10.30684/etj.32.6A.10

Abstract

A new wear resistance glass-ceramic coating system iron (low alloyed low carbon steel) based substrate was developed. The effects of heat treatment conditions and mill additions on ... Read More ...

Modeling of The Corrosion Behavior of Enamel Coatings in Different Aggressive Media

Ibtihal A. Mahmood; Jabbar H. mohmmed; Baydaa A. Khalaf

Volume 32, Issue 6 , July 2014, , Page 1530-1543

https://doi.org/10.30684/etj.32.6A.15

Abstract

In this study an attempt has been made to formulate materials for glass ceramic enamel coating that can be applied directly onto cast iron substrate for corrosion control. Different ... Read More ... In this study an attempt has been made to formulate materials for glass ceramic enamel coating that can be applied directly onto cast iron substrate for corrosion control. Different 'proportions(4.95) %wt. to form four batches. The batches were mixed with water to form slips which were used to coat already prepared cast iron surfaces and were allowed to dry in the oven. The coated cast iron plates were fired at temperatures of 850˚C to mature and factually heat treated at 680˚C. The coatings were observed and also chemical tests were conducted to determine the corrosion properties of the resultant coatings. The chemical tests were evaluated using a suitable standard methods and special attention was paid to the type of aggressive solution, and temperature. The results show that the coatings matured and adhered very well to the sub strateand showed good corrosion resistance in H2SO4,HCl,C6H8O7, H3PO4, and NaOH solutions. The results indicated that the corrosion rate in both acid and alkali media was increased strongly with the increasing temperature.The coatings prepared with the zircon showed better results in terms of acidcorrosion resistance than those prepared with the other crystalline agents. However, the corrosion rate of the zircon containing coating in sulfuric acid was higher than that in hydrochloric acid. Also, it is found that there is absolutely no weight loss for any of the four types of the coating in neither citric nor phosphoric acids. At the same time, the results for alkali corrosion resistance indicate that the act of the four series is very similar to each other, for the four coatings there is no high corrosion rate until the temperature exceed 100˚C after that the rate increases in a very quick manner. From the results it is found that the enamel with lithium oxide was not affected by the alkali solution at all, this behavior is associated with the presence of crystalline β-Spodumene, and β-Eucryptite, which have an extremely high corrosion resistance especially for alkali medium. Mathematical modeling is implemented and regression equations are obtained by using (SPSS) software to predict the experimental data for acid and alkali corrosion rate. Comparing the predicted and measured values gives high prediction accuracy.

Prediction of Metal Removal Rate and Surface Roughness in Electrochemical Machining (ECM)

Saad kariem Shather; Hiba Husien Alwan

Volume 30, Issue 8 , April 2012, , Page 1415-1427

https://doi.org/10.30684/etj.30.8.12

Abstract

Electrochemical Machining (ECM) is a relatively important method of removing metal by anodic dissolution. In this research the ECM was used to remove the metals from the internal hole ... Read More ...

Studying and Modeling The Effects of Quartz Addition and Heat Treatment on Corrosion Properties of Ceramic Coating

Ali H. Ataiwi; Ibtihal A. Mahmood; Jabbar H. mohmmed

Volume 29, Issue 12 , September 2011, , Page 2564-2579

https://doi.org/10.30684/ etj.29.12.15

Abstract

In this work, a new glass-ceramic coating has been developed and applied, as a single coat without prior chemical treatment of the surface, by using the dipping technique on metal substrate. ... Read More ...

Keywords = SPSS software

Studying and Modeling the Effects of Quartz Addition and Heat Treatment on Mechanical Properties of Glass-Ceramic Coating

Abstract

Wear Resistance of a New Glass Ceramic Coating

Abstract

Modeling of The Corrosion Behavior of Enamel Coatings in Different Aggressive Media

Abstract

Prediction of Metal Removal Rate and Surface Roughness in Electrochemical Machining (ECM)

Abstract

Studying and Modeling The Effects of Quartz Addition and Heat Treatment on Corrosion Properties of Ceramic Coating

Abstract