Semiconductors and PV manufacturers are faced with significant corrosion challenges. They target to produce metallic components that can withstand extreme conditions such as varying pH levels, extremely high and low temperature, high pressure, and exposure to different environmental elements that significantly affects their physical properties. More often, the solution often involves diffusion coatings to give the base metal physiochemical and structural properties making them suitable to operate under extreme physical conditions.
The top choice coating materials include the steel alloy, aluminum, alloy, chromium and titanium alloys, and silicon. Most of these are able to stand varying pH levels, extreme temperatures, and other physical conditions, offering a protective cover to iron materials, nickel, cobalt, steel and carbon among other metals.
This makes the metals reliable and long lasting thereby allowing for the manufacture of critical machine components and components for other applications. The process is used to manufacture and process gas turbine components such as cases, blades, vanes, and gate valves, pump impellers as well as power generation components.
The level of resistance offered to the base metals enables them to work effectively in conditions of temperatures as high as 2100 degrees Fahrenheit with no risk of spallation. As such, all metallic components of the machine or system that is exposed to extreme temperature, pressure, pH level and other physical conditions have to be diffusion coated.
This is not to say that you can just walk into the store and order any coated metal plate, the price is less of a factor than the operational conditions. Not all the coating materials offer the same level of resistance under a similar set of conditions. As such, you have to consider the conditions under which the metal is to be used and make a wise choice.
Compatibility is perhaps the most important factor to consider. No single coating or alloy is able to withstand corrosive attack from all types of acids and bases. Your choice of the coating material should be guided with all potential chemical exposures, including air and water.
Different levels of chemical or gas concentration have varying effects on the rate of corrosion. In most cases, the highly concentrated acids and bases tend to increase the rate of erosion. In addition to the concentration level, the fluid velocity and type must also be considered to find the most compatible coat.
The rate of erosion and corrosion also increases with the time of exposure. In some cases, the exposure is cyclical involving periodic wetting and drying of the metal surface without rinsing. This increases the corrosion rate significantly.
If the fluid is acid or basic, then the pH level makes a whole difference. Silicon coated metal last longer even in extremely acidic condition (low pH) and corrode faster in high pH (environment). The metals like aluminum and steel are corroded faster as long as the pH levels are extreme.
The top choice coating materials include the steel alloy, aluminum, alloy, chromium and titanium alloys, and silicon. Most of these are able to stand varying pH levels, extreme temperatures, and other physical conditions, offering a protective cover to iron materials, nickel, cobalt, steel and carbon among other metals.
This makes the metals reliable and long lasting thereby allowing for the manufacture of critical machine components and components for other applications. The process is used to manufacture and process gas turbine components such as cases, blades, vanes, and gate valves, pump impellers as well as power generation components.
The level of resistance offered to the base metals enables them to work effectively in conditions of temperatures as high as 2100 degrees Fahrenheit with no risk of spallation. As such, all metallic components of the machine or system that is exposed to extreme temperature, pressure, pH level and other physical conditions have to be diffusion coated.
This is not to say that you can just walk into the store and order any coated metal plate, the price is less of a factor than the operational conditions. Not all the coating materials offer the same level of resistance under a similar set of conditions. As such, you have to consider the conditions under which the metal is to be used and make a wise choice.
Compatibility is perhaps the most important factor to consider. No single coating or alloy is able to withstand corrosive attack from all types of acids and bases. Your choice of the coating material should be guided with all potential chemical exposures, including air and water.
Different levels of chemical or gas concentration have varying effects on the rate of corrosion. In most cases, the highly concentrated acids and bases tend to increase the rate of erosion. In addition to the concentration level, the fluid velocity and type must also be considered to find the most compatible coat.
The rate of erosion and corrosion also increases with the time of exposure. In some cases, the exposure is cyclical involving periodic wetting and drying of the metal surface without rinsing. This increases the corrosion rate significantly.
If the fluid is acid or basic, then the pH level makes a whole difference. Silicon coated metal last longer even in extremely acidic condition (low pH) and corrode faster in high pH (environment). The metals like aluminum and steel are corroded faster as long as the pH levels are extreme.
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