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Magnesium Fluoride Coating Quality Bal. 0.7 - 1.5 Mm
Magnesium fluoride coatings have a mass balance of between 0.7 and 1.5 mm. The common detection methods are as follows:
One is the method of appearance inspection. With eyesight or supplemented by low magnifying glass, the surface of the coating is carefully inspected. Observe whether there are cracks, pores, peeling, pitting and other defects. The surface of the coating should be uniform and smooth. If the above defects exist, it will affect its protective performance and overall quality.
The second is the thickness measurement. A magnetic thickness gauge can be used to measure the thickness of the coating on a ferromagnetic substrate. The eddy current thickness gauge can also be used, which is suitable for conductive coatings on non-ferromagnetic substrates, and the eddy current effect is used to measure the thickness. Furthermore, the metallographic microscope method is also a good strategy to prepare metallographic samples, accurately measure the thickness of the coating under the microscope, and observe its microstructure, such as the bonding state of the coating and the substrate.
The third is the method for detecting the bonding force. The scratch test is more commonly used. A hard tool is used to cut the surface of the coating into a specific mesh, stick it with tape and quickly tear it off, and observe the coating falling off to evaluate the bonding force. The pull-off method is also good. The coating is bonded to the substrate with a special fixture, and the tensile force is applied by a tensile testing machine to measure the force required to pull off the coating and quantify the bonding force.
The fourth is hardness testing. Choose a suitable hardness tester, such as a microhardness tester, apply a specific load to the surface of the coating, measure the size of the indentation, and convert the hardness of the coating. Hardness is related to the wear resistance of the coating. Appropriate hardness can ensure that the coating will last for a long time without damage.
These methods complement each other and can comprehensively and accurately evaluate the quality of magnesium fluoride coatings to ensure that they achieve the expected performance in various application scenarios.
Magnesium Fluoride Coating Quality Bal. 0.7 - 1.5 Mm How to Ensure Quality Standards
In order to ensure that the magnesium-fluoride coating meets the Quality Standard, the following methods must be followed.
First material selection. Magnesium and fluoride raw materials must be pure and free of impurities, which is the foundation. If you choose fine iron for casting swords, you will benefit if the material is pure. Impure materials, like turbid water, will cause coating defects and difficult to achieve quality standards.
The preparation process is also critical. The thickness of the coating is set at 0.7 to 1.5 mm. When preparing, the temperature, pressure and time must be precisely controlled. Just like alchemy, if the temperature is wrong, the medicinal pill will be wasted. If the temperature is too high, the coating may be too thick and uneven in texture; if the temperature is too low, the adhesion will be poor. The same is true for pressure, and improper pressure will affect the density of the coating. The time is not well controlled, or it is thin and difficult to protect, or thick and redundant.
The application process also needs to be paid attention to. The operating environment should be clean and free of dust and impurities. If you apply it in a dusty place, it will be like painting on dirty paper, and dust will mix into the coating, destroying its integrity and uniformity. The application method should be stable and uniform to ensure that the thickness and quality of the coating are consistent throughout.
The detection process is indispensable. For each coating made, the thickness should be measured with an accurate measuring tool to see if it is between 0.7 and 1.5 mm. It is also necessary to test its adhesion fastness, hardness and other properties. If only the thickness is up to standard, but the adhesion is not good, it will not be qualified if it is touched.
All of these are available, and careful attention can be paid to ensure that the magnesium fluoride coating meets the Quality Standards, such as the well-crafted jade, the silk is ingrained, and the final product is good.
Magnesium Fluoride Coating Quality Bal. 0.7 - 1.5 Mm What are the common causes of quality problems?
Magnesium-fluoride coatings have quality problems, the thickness is in the range of 0.7-1.5 mm. The common reasons are as follows:
First, the raw material ratio is improper. If the ratio of magnesium to fluoride does not meet the process standards, the coating composition is unbalanced, resulting in poor performance. If there is less magnesium and more fluoride, it may weaken the adhesion of the coating and be easy to peel off; if there is less fluorine and more magnesium, it may increase the brittleness of the coating and be prone to cracks.
Second, the substrate treatment is improper. If there are oil stains, rust stains, impurities, etc. on the surface of the substrate that have not been removed, the coating and the substrate cannot be well combined. Even if the subsequent coating process is accurate, due to the unclean substrate, the coating does not adhere firmly, and it is easy to foam and fall off. < During the coating process, if the temperature, pressure, speed and other parameters are not well controlled, it will affect the quality of the coating. If the temperature is too high or too low, the coating structure will be abnormal; if the pressure is uneven, the coating thickness will be different; if the coating speed is too fast, the coating thickness will be difficult to evenly cover, and the coverage will be incomplete; if the speed is too slow, it will waste time and materials, and it may cause the coating to be too thick, resulting in hanging and accumulation.
Fourth, environmental factors interfere. The humidity and cleanliness of the coating environment have a great impact. If the humidity is too high, the coating will contain moisture, and defects such as pores and pinholes will form after drying; if there are many dust and particles in the environment, they will be mixed into the coating, reducing its compactness and aesthetics.
Fifth, the hidden If the coating equipment is worn, blocked, etc., it cannot be accurately coated. The nozzle is worn, and the material discharged is uneven; the pipeline is blocked, and the material supply is not smooth, resulting in quality problems such as uneven thickness and leakage of the coating.
Magnesium Fluoride Coating Quality Bal. 0.7 - 1.5 Mm What are the specific effects on the performance of the application product?
The mass allowance of magnesium fluoride coatings is 0.7 - 1.5 mm, which has many effects on product performance.
In terms of protective performance, when the coating thickness is in this range, it can build a more solid barrier for the product. Moderate thickness can effectively block external environmental erosion, such as preventing the metal substrate from contacting air and moisture, slowing down the oxidation and corrosion process, and greatly improving the durability of the product in harsh environments. For example, in a humid marine environment, a suitable thickness of magnesium fluoride coating can make metal products resist seawater corrosion and prolong their service life.
In terms of optical properties, this thickness range has a specific effect on the light transmittance of the coating. For some optical devices, the appropriate thickness can ensure good light transmittance without affecting the light propagation and imaging quality; however, if the thickness deviation is too large, it may cause abnormal light scattering or absorption, resulting in deterioration of optical performance and affecting the observation accuracy of the instrument.
Mechanical properties are also affected by it. The appropriate coating thickness gives the product good wear resistance. During the friction process, the coating can withstand a certain degree of wear, protect the substrate from excessive damage, improve the wear resistance of the product surface, reduce the friction coefficient, and make the product run more smoothly between relatively moving parts.
Furthermore, in terms of adhesion, a thickness of 0.7-1.5 mm is conducive to the formation of a stable bond between the coating and the substrate. The appropriate thickness helps to enhance the intermolecular force or chemical bonding between the two, so that the coating is not easy to fall off and peel during the use of the product, maintaining the stability and integrity of the overall structure, and ensuring that the performance of the product can be continuously and effectively exerted.
Magnesium Fluoride Coating Quality Bal. How stable is 0.7 - 1.5 Mm in different environments
Magnesium fluoride coatings have a mass margin between 0.7 and 1.5 mm. Under different environments, their stability is related to many factors.
In a dry and less variable environment, magnesium fluoride coatings are like the walls of ancient cities, which can maintain stability for a long time. The dry environment has no water vapor erosion, less chemical interference, and the internal structure of the coating is quiet, such as a quiet deep pool, with little turbulence. Its high stability is like an ancient heavy weapon. It has not changed its quality over time, and can protect the matrix material for a long time from external damage.
In a humid environment, water vapor is like a cunning enemy, pervasive. Although magnesium fluoride coatings have certain resistance, they are difficult to resist long-term water vapor penetration. The water molecules are like fine needles, gradually passing through the gaps of the coating, reacting with the substrate material, or causing corrosion. In this situation, the stability of the coating gradually weakens, like candles in the wind and rain, and the light fades.
If it is in a high temperature environment, the magnesium fluoride coating seems to be placed on the side of a furnace. The high temperature makes the molecules active abnormally, and the internal structure of the coating is like boiling water, which is turbulent. The bonding force between atoms may be weakened, causing the performance of the coating to change and the stability to drop suddenly. Its change is like an ancient object calcined by fire, and the shape and texture are not what they used to be.
In a strong chemical corrosion environment, all kinds of chemicals are like tigers and wolves, attacking the magnesium fluoride coating frantically. Substances such as strong acids and alkalis react chemically with the coating, and the coating structure quickly disintegrates like a pavilion hit by force. In this environment, the stability of the coating is almost gone, and it is difficult to play the role of protecting the matrix material.
Magnesium fluoride coatings have significant differences in stability under different environments. Humid, high temperature and strong chemical corrosion environments are its enemies, which will weaken their stability, while dry and stable environments help them maintain good performance for a long time and protect the matrix material.
