Inhibition of Microfissure Formation in Wear Resistant Coatings
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United States of America Patent
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Apr 30, 2015
app pub date -
Oct 23, 2014
filing date -
Oct 24, 2013
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Abstract
A method of manufacturing coated components, e.g., for use in downhole drilling, which may limit, during the manufacturing process, the formation of microfissures and other performance-inhibiting characteristics in the abrasion resistant coating. The method may include applying an abrasion resistant coating composition to a substrate. The abrasion resistant coating composition and at least the surface of the substrate may be heated to effect metallurgical bonding of the abrasion resistant coating composition with the substrate. The substrate may then be austempered under process conditions selected to limit the volume of expansion of the substrate during austempering to less than about 0.8%.
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