Wan Mohamad Ikhmal

Wan Mohamad Ikhmal
Universiti Malaysia Terengganu | umt · Faculty of Science and Marine Enviornment

MSc (UMT), BSc (UMT)
Eco-friendly corrosion inhibitors and additives for coatings

About

24
Publications
70,838
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
85
Citations
Citations since 2017
24 Research Items
85 Citations
2017201820192020202120222023010203040
2017201820192020202120222023010203040
2017201820192020202120222023010203040
2017201820192020202120222023010203040
Introduction
I'm currently pursuing my PhD in Physics at the Faculty of Science and Marine Environment, Universiti Malaysia Terengganu. My area of research is focusing on the development of green anticorrosion and antifouling coatings for marine application. If you are interested to make a collaboration, please do not hesitate to message me ! Thank you :)

Publications

Publications (24)
Article
Full-text available
The increasing awareness of people on green materials and chemistry has stimulated researchers around the globe to turn towards natural resources. As a growing topic with limitless potential, plants as corrosion inhibitors (PCI) have received substantial attention due to their eco-friendly, biodegradable, inexpensive, and abundantly available. Ther...
Article
Full-text available
Metallic materials have propelled human advancements for centuries. Nevertheless, the rapid degradation of metallic structures in corrosive environments is inevitable. To date, the demand for metal alloys in multiple sectors, including construction and transportation, continues to escalate, with the trend it is predicted to reach beyond 250% by 205...
Article
Full-text available
The conventional coatings are generally unsustainable in harsh environments and offer limited protection to the intended infrastructures. Recently, the emergence of plant-based components to enhance coatings has attracted significant attention due to their characteristics of anticorrosion, antifouling, antimicrobial, self-healing, and ultraviolet (...
Article
In the present study, the impact of CaSiO3 addition on microstructure and electrical characteristics of a ZnO-based varistor system was investigated. The ceramic materials were prepared by solid-state reaction route by varying the CaSiO3 concentrations (0, 3, 6, 9, 12, and 15 wt%) and sintered at 1300 °C. Characterization of the pelletized samples...
Article
Full-text available
The efficacy of eggshells (ES) powders as an anticorrosive pigment with TiO2 nanoparticles in waterborne polyurethane coatings has been investigated. The experiment was conducted on mild steel in a corrosive solution of artificial seawater. Several characterizations to analyze the effects of ES addition were performed, including the classical weigh...
Data
Thanks to the members of RG and the work carried out by the Research Team, this paper reached 1500 reads, we are very happy with this result.
Data
Thanks to the members of RG and the work carried out by the Research Team, this paper reached 350 recommendations and passed 1000 reads in a short time, we are very happy with this result.
Article
Full-text available
Air pollution is an increasing prevalence of environmental diseases. Previously, hazardous air pollutants (HAPs) on the ozone layer, which primarily constitute volatile organic compounds (VOCs), have become a major public concern. As a result, the Environmental Protection Agency (EPA) has introduced a strict regulation on the limit of VOCs content...
Article
Full-text available
The global increase in electrical device consumption has escalated the demand for excellent surge protectors. As a state-of-the-art technology, varistor has received considerable attention due to its outstanding versatility and wide range of applications. Hence, it is crucial to understand the development trend of varistor to expand the collaborati...
Article
Full-text available
A large number of anti-corrosion coatings containing volatile solvents with aliphatic hydrocarbons, formaldehyde and benzene are produced annually with the risk of releasing harmful volatile organic compounds (VOCs) into the air. In this study, a commercial coating product for protecting steel is compared with the newly formulated green coating for...
Article
Full-text available
With the trend for green technology, the study focused on utilizing a forgotten herb to produce an eco-friendly coating. Andrographis paniculata or the kalmegh leaves extract (KLE) has been investigated for its abilities in retarding the corrosion process due to its excellent anti-oxidative and antimicrobial properties. Here, KLE was employed as a...
Article
Full-text available
Application of ZnO varistor at low voltage has increased significantly due to the high demands of low-voltage electronics with high nonlinearity characteristics and low leakage current. The varistor ceramics were developed via a solid-state reaction method, and the resultant sample was analyzed by means of SEM, EDS and XRD. The nonlinearity charact...
Article
Full-text available
This paper investigated the effects of Pr6O11 and Co3O4 on the electrical properties of ZnO-BaTiO3 varistor ceramics. The Pr6O11 doping has a notable influence on the characteristics of the nonlinear coefficient, varistor voltage, and leakage current where the values varied from 2.29 to 2.69, 12.36 to 68.36 V/mm and 599.33 to 548.16 µA/cm2, respect...
Article
Full-text available
Leucaena leucocephala leaves extract (LLE) was incorporated as an additive in a new coating formulation. The coatings containing different wt. % of the extracts were analysed by optical characterizations and we proceeded to the antimicrobial assessment. The coating was applied onto the surface of stainless steel grade 316L and immersed in seawater...
Article
Full-text available
Anticorrosion coatings are a common means of corrosion control. For the past few years, one of the more widely used anticorrosion coatings was chromium based. However, chromium was found to be highly toxic and its use has been discontinued. An epoxy-based coating is formulated by incorporating a biocompatible hybrid composite of inorganic nano tita...
Article
Full-text available
Anti-corrosion protection coating serves as an effective way for the reduction of corrosion progress in a corrosive environment. With the increase of interest in green corrosion protection nowadays, Kalmegh or Andrographis paniculata from the family of Acanthaceae is evaluated for its potential as an additive in coating for stainless steel grade 31...
Article
Full-text available
In the present, varistor ceramics through the combination of zinc oxide (ZnO) with a perovskite material have become widespread because of their unique properties for a wide range of applications in electronic protection devices. Low-voltage zinc oxide (ZnO) varistors with fast response and highly nonlinear electrical properties for overvoltage pro...
Article
Full-text available
The analysis of anticorrosion coating by using Andrographis paniculata (kalmegh) leaves extract (KLE) as an additive to protect stainless steel 316L that immersed in seawater environment was successfully carried out. The anti-corrosive coating is the combination of selected binder, pigment, solvent, and additive. Andrographis paniculata leaves extr...
Article
Full-text available
Corrosion inhibition analysis of Leucaena leucocephala leaves extract (LLE) as an additive incorporated into a commercialized coating to protect mild steel when immersed in seawater has been successfully conducted. The procedures involve the utilization of multiple techniques including Fourier transform infrared spectroscopy (FTIR), ultraviolet-vis...
Chapter
Full-text available
Conventional, free or pressure less sintering is the simplest technique which involves heating of a powder compact, previously prepared at ambient temperatures, without applying any external pressure. It can be conducted with various box furnaces or tube furnaces under different atmospheres (oxidizing, reducing, inert, and vacuum). Through the use...
Article
Full-text available
This present study aims to analyze the functional group present in the Andrographis paniculata leaves or also known as kalmegh by using Shimadzhu Fourier Transform Infrared (FTIR) with the absorbance range of 500 cm⁻¹ - 4000 cm⁻¹. Andrographis paniculata (Nees) is a valuable traditional medicinal plant and it has many important bioactive compounds....
Article
Full-text available
Olive leaves extract (OLE) was evaluated as green corrosion inhibitor for stainless steel grade 316L (SS316L) in several media using scanning electron microscope (SEM), electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization techniques. The Fourier Transform Infrared (FTIR) spectroscopy results reveals several active compound...

Questions

Questions (86)
Question
Greeting,
When I tried to remotely accessed the scopus database by login into my institution id, it kept bring me back to the scopus preview. I tried cleaning the cache, reinstall the browser, using other internet and etc. But, none of it is working. As you can see in the image. It kept appeared in scopus preview.
Please help..
Question
Greetings dear researchers,
I have fabricated urea-formaldehyde microcapsules for the dispersion in waterborne polyurethane. However, I found out that the waterborne polyurethane have pH 8.56 in liquid state. So, one of my plan is to increase the microcapsules resistance in this pH state. How can I do that? Any suggestion?
Thanks
Question
Greetings fellow researchers,
Can someone give me a suggestion on how can I improve the dispersion of urea-formaldehyde microcapsules in waterborne polyurethane coatings? Because some of them seems to coagulate when I just simply stirred the mixture.
Thanks.
Question
Greetings fellow researchers,
I am trying to adjust the pH of waterborne polyurethane that I bought for a research project. The problem is, no matter how much I tried, the pH only move a little bit. In pristine condition, its pH is 8.40. I want to lower it down to 7 or if possible, to 6.
Several things that I tried include 5% HCl, 5% citric acid, diluted HCl with pH ranging from 4 to 2.8. But, none of it seems to work. Research from google suggest that it might be a buffer effect. However, I am not sure. Even if it is, how can I adjust it?
Thanks.
Question
Greetings dear researchers,
Recently I tried to fabricate microcapsules using a non-polar liquid. After several trials, I managed to form the microcapsules quite a lot in one batch of a solution. I confirm this formation through an optical microscope before and after the vacuum filtration. However, today, when I took the same sample to be analyze under Scanning Electron Microscope (SEM), the results I got are like in the pictures. Not one microcapsules were found even when I found it a lot before under the optical microscope. One of my colleague told me that the problem might be because the SEM I used needs to be pump before the analysis, and this high pressure might have destroyed them. Is this reason feasible?
Also, do you have a way to enhance the amount of microcapsules produced? Because even after 3 hours of stirring, the amount of microcapsules in contrast to other byproducts or whatever are still significantly different.
Question
Greetings,
I want to re-create some published work that use formaldehyde as the wall material for microcapsules. The purpose of this microcapsules are to encapsulate some oil for anticorrosion purpose. However, as we know that formaldehyde is not good for human and animal. And since this microcapsules is planned to be used in coatings and applied to metal-based infrastructure, I am worried about its toxicity effect to the environment.
So, can someone suggest some materials to replace formaldehyde but with similar characteristic and efficiency?
Initially, I planned to make Urea-Formaldehyde (UF) microcapsules.
Question
Greetings dear researchers,
Can anyone suggest a simple and correct way for me to clean the formed corrosion product on my mild steel sample after it has been immersed in a corrosive solution for few days? I have some approaches from ASTM G1-90, but it use several chemicals and I am worried that it might induced corrosion instead of cleaning it. Thank you.
Question
Greeting,
As you can see in the figure attached, I want to ask, if I have a sample that has been immersed for few days already. What is the suitable duration and stab. (mV/s) I should use for the EIS and Potentiodynamic polarization measurements?
The sample is a coated mild steel. Thank you.
Question
Greetings,
My question is very simple. We all know that essential oil does not mix with water and will just float on the water surface. So, let say I want to test its corrosion inhibitive property for a steel that is immersed in 3.5% NaCl, if I just simply added the essential oil, I do not think it will be in contact with the steel.. Not to mention its dispersibility in the water will be not so good. But, I have seen quite a number articles published to highlight the corrosion inhibitive nature of essential oils. So, can someone enlighten me on how to make this possible? (Do I need an emulsifier or not?)

Network

Cited By

Projects

Projects (3)