give reasons: ceramic is used in electrical instrument for coating
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Ceramic coatings have various advantages: they increase the lifetime of parts, prevent corrosion, reduce heat on high-temperature components, reduce friction, stop thermal and acidic corrosion and improve the appearance of surfaces. Although ceramic coatings have several advantages, they have some disadvantages as well: they are extremely brittle and hard to repair; de-bonding can occur during the expansion and shrinkage; corrosion easily forms at the cracks; they are heavier than organic coatings; and the coating involves additional equipment, supplies and labor.
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