0
Write differences between Anodic Coatings and cathodic coatings?
Wiki User
∙ 12y ago
In anodic system, small amounts of the metal migrates into the coating film limiting it's usefulness in corrosion protection. Anodic coatings are used in less severe environments and are generally economical and produce a nice surface finish.
Cathodic systems produce an coating free of metal migration and are much more robust. These systems are useful in heavy corrosive environments.
Wiki User
∙ 12y ago
Add your answer:
Earn +20 pts
What is the difference between powder and ceramic coating?
Powder coatings are flexible, have good weatheribility and mehcnical properties. Powder coatngs generally cure at 200 deggree for 10 min Powder coatings could be theromosetting (polyester or epoxy) or thermoplastic (LDPE, HDPE etc) Powder Coatings have limited chemical resistance. Ceramic coatings are generally brittle. Have excellent chgecmical resistance Cure at around 800 seegree centigrades
What is the link between PFOA and Teflon?
Non-stick coatings can contain residues of PFOA (perfluorooctanoate), a chemical used to make Teflon and a breakdown product of stain- and grease-proof coatings on carpet, clothing and food packaging. PFOA is found in the bodies of nearly all Americans. It is a likely human carcinogen; it also has a variety of metabolic developmental, reproductive, endocrine, and neurobiological health effects. Many manufacturers of non-stick cookware have committed to eliminating PFOA residues from non-stick coatings. Available data suggest that non-stick pans are not a major source of PFOA in people's bodies. These exposures are more likely to come from stain- and grease-proof coatings on furniture, clothing, and food packaging. Studies also show that most of the potential health risks from non-stick pans, such as polymer fume fever, come not from PFOA but from other particles and fumes that can come off the pan when it is overheated. While EWG continues to track the changes in manufacturing practices for non-stick cookware, we highly recommend stainless steel and cast iron as great alternatives to non-stick cooking surface.
What are the differences between polycarbohydrate and polysaccharide?
What are the differences between polycarbohydrate and polysaccharide?
How are Ionic bonds are formed between atoms that have large differences in?
Ionic bonds are formed between atoms with large differences in electronegativity.
What is the differences between gold over sterling silver and gold plated jewelry?
what is the differences between gold plated and gold over silver.
What is the difference between powder and ceramic coating?
Powder coatings are flexible, have good weatheribility and mehcnical properties. Powder coatngs generally cure at 200 deggree for 10 min Powder coatings could be theromosetting (polyester or epoxy) or thermoplastic (LDPE, HDPE etc) Powder Coatings have limited chemical resistance. Ceramic coatings are generally brittle. Have excellent chgecmical resistance Cure at around 800 seegree centigrades
What is the difference between lining and coatings?
Linings are materials used to protect a container from corrosion and/or to protect the contents of a container from contamination by the container shell material. They are commonly thick, built-up systems that may or may not contain matting or similar reinforcing material. Coatings generally refer to materials used for protective and/or functional purposes, while paints refer to materials used for aesthetics or decorative purposes. When coatings are used singly or in combination with reinforcing materials like matting, etc., they are termed as "lining", like for lining the inside of drinking water tanks. However, there exist many similarities in composition, handling, and the use of paints, coatings and linings. There are also some differences. Shihui Zhou Shihui.Zhou@googlemail.com
What is the difference between breading and battering food?
Before foods are deep-fried or pan-fried, they are normally smothered in a dry or wet coating. Dry coatings are often referred to as "breadings" since they frequently, but certainly not always, include the use of bread crumbs. Wet coatings are called batters. Breadings can be used when deep-frying or pan-frying. Batters are exclusive to deep-frying.
What is the thickness between water based and solvent paint?
Normal wall paint should be applied at a thickness of 4 mils to dry down to approximately one mil thick. This is true with either oil or water-based coatings.
What is the link between PFOA and Teflon?
Non-stick coatings can contain residues of PFOA (perfluorooctanoate), a chemical used to make Teflon and a breakdown product of stain- and grease-proof coatings on carpet, clothing and food packaging. PFOA is found in the bodies of nearly all Americans. It is a likely human carcinogen; it also has a variety of metabolic developmental, reproductive, endocrine, and neurobiological health effects. Many manufacturers of non-stick cookware have committed to eliminating PFOA residues from non-stick coatings. Available data suggest that non-stick pans are not a major source of PFOA in people's bodies. These exposures are more likely to come from stain- and grease-proof coatings on furniture, clothing, and food packaging. Studies also show that most of the potential health risks from non-stick pans, such as polymer fume fever, come not from PFOA but from other particles and fumes that can come off the pan when it is overheated. While EWG continues to track the changes in manufacturing practices for non-stick cookware, we highly recommend stainless steel and cast iron as great alternatives to non-stick cooking surface.
Do new valves need grinding?
NO In the old days we sed to do this and a proccess called "Lapping" to get a perfect seal between the Valve and seat. Today with special coatings and special materials used in in valves and valve seats any grinding process can seriously damage the valves and seats.
What is the difference between a chewable and an enteric coated tablet?
An enteric coated tablet has a shell that prevents it from dissolving in the stomach. If chewed the shell will be broken and the medicine will encounter the stomach wall. Enteric coatings seek to prevent this because some medicines are harmful to the stomach but not to the small intestine where they are digested.
What has the author James S Muraoka written?
James S. Muraoka has written: 'Effect of bottom sediment containing hydrogen sulfide on materials ; Part 1.' -- subject(s): Materials, Hydrogen sulphide, Marine fouling organisms, Biodeterioration 'Plastic film coatings for protection from marine fouling and corrosion' -- subject(s): Plastic films, Protective coatings, Marine fouling organisms 'Deep-ocean biodeterioration of materials' -- subject(s): Marine sediments, Materials, Biodeterioration 'Relationship between marine fouling and corrosion rate of carbon steel and aluminum alloy at the surface and at 6,000-foot depth' -- subject(s): Ocean engineering
When applying paint does the temperature of the air have anything do with the color out come?
As long as the temperature of the air, paint and surface is between 50 and 100 F when the paint is applied, then there should be no variance in color. Some house paints will work down to 35 F and there are some specialty coatings that can be used at even colder temperatures.
Comparision between metallurgical and biological microscope?
A metallurgical microscope is used to view opaque items and measure thin film, electroplating coatings, inclusions, grain size, and surface defects. A biological microscope, on the other hand, is used to view crystals, computer chips, cells, and tissues. It is also known as a high power compound microscope.
What is the difference between UV protected lenses and polarized?
UV lens coatings are designed to block UV rays from reaching your eyes. Polarized lenses block glare (light reflected off of water or snow, for example) and improve vision that way. Polarized lenses do not offer UV protection - they would need to have a UV coating applied.
Which of the following are responsible for the differences between species and for differences between individuals in the same population?
Genetic differences
