Abstract: A method for evaluating a vessel for suitability to contain a fluid includes providing a vessel and forming a polished surface portion of the vessel by removing oxidation and/or contaminants from a portion of the vessel. The method further includes applying a focused laser to the polished surface portion to form plasma on the polished surface portion, and determining whether the vessel is suitable for containing a fluid based on silicon content of the polished surface portion. The silicon content is estimated based on light emitted from the plasma.

Abstract: Disclosed are coating compositions, methods for preparing the coatings and coatings made therefrom. The coatings have durable functional and damage healing properties. In some embodiments, compositions include a liquid media, surface modified diatomaceous earth (SMDE) particles chemically modified to impart a desired fluid wettability suspended in the liquid media, and microcapsules suspended in the liquid media. The SMDE particles are chemically modified through the use of various silanes imparting hydrophobicity, hydrophilicity, oleophobicity, or oleophilicity. In certain embodiments, the SMDE particles and the microcapsules are in different coating layers. In certain embodiments, compositions are in the form of powder coatings including mixtures of powder epoxy particles, SMDE particles chemically modified to impart a desired fluid wettability, and microcapsules. Disclosed further are methods for coating articles with the coatings and the coated articles.

Abstract: A method for evaluating a vessel for suitability to contain a fluid includes providing a vessel and forming a polished surface portion of the vessel by removing oxidation and/or contaminants from a portion of the vessel. The method further includes applying a focused laser to the polished surface portion to form plasma on the polished surface portion, and determining whether the vessel is suitable for containing a fluid based on silicon content of the polished surface portion. The silicon content is estimated based on light emitted from the plasma.