Skip to main content

Coatings quiz - 4

 Coatings quiz - 4


Done? Click here for the next quiz!

Read about the coating delamination in a balcony frame here!



😀Happy learning!😀

Comments

Popular posts from this blog

3 Stages of the beginning of your PhD...aka...OMG what the H am I doing here?

PhD is not a goal, PhD is a journey, and a mighty transformative one at that. That it has different stages is a known fact. However, just the beginning of the PhD has different sub-stages. The pre-beginning the admit and preparation to leave There is fear of the unknown as well as the excited anticipation of new places and people. Specifically in case of Indian students, the flurry of bag packing is accompanied with homemade pickles and snacks. The beginning orientation and settling in The students at this point in time are faced with a bit of anxiety and struggle while searching for accommodation (for overseas universities). There is the factor of being so far away from the family for the first time. Then there also is the undercurrent of being able to manage finances and household chores. A very busy phase indeed. The post-beginning where the students settle into their research groups and begin the literature review. Some may also begin small experiments. There is the enthusiasm of l...

Resources for a corrosion beginner

Corrosion is a complex subject. It is difficult to pick and choose the starting point. It is very easy to spiral into a confused state of mind if the right resources are not available. Hence, I write this blog post to list out a few books which are great if you are a corrosion enthusiast. Here goes - 1. Corrosion Engineering by Mars. G Fontana          I love this book and I always refer to it for my work. 2. Peabody's control of pipeline corrosion -  3. Corrosion engineering - Principles and practice - Pierre Roberge The website www.corrosion-doctors.org has a more extensive list of corrosion articles. Other than that, there are online corrosion magazines which you can access - 1. Materials performance -  www.materialsperformance.com 2. corrosionpedia.com 3. CORROSION journal  meridian.allenpress.com/corrosion -  it has a few open access articles. Check out these resources as a starting point!

The drain mystery

I recently moved to a new house. As expected, there was a lot of cleaning up to do. One of the tasks was the cleaning of the washbasin. Usually, the drain is a circular part with  5 to 6 holes for the water to flow out. What I saw was this - I have not had a chance to analyse the material of the drain. However, a quick search tells me that this is most probably stainless steel. The water that this drain is exposed to is the bore water. Thus, the drain has encountered a lot of chlorides. There is general as well as localized corrosion. The damage started off as a simple process of pitting. Pitting due to chlorides is one of the most common headaches for poor stainless steel. They break the passive oxide film, and reach the underlying fresh iron. This iron then reacts with the usual suspects (ions, oxygen, water) and forms what we see as the rust. As can be seen in the picture, the thin sections of the drain between the holes have disappeared in three places. This may have h...