Wear resistant materials

摘要

A hard phase material is provided for increasing the hardness of a matrix material and improving the wear resistance thereof. The hard phase material is an aluminum boride material having the structure AlB8-16. The aluminum boride hard phase may be incorporated into a matrix material by mixing particulate aluminum boride with the matrix material and through precipitation of aluminum boride from the matrix material. Materials including the aluminum boride hard phase may be used in coating applications to provide a hard and wear resistant coating. Aluminum boride hard phase may also be incorporated into metallurgical products to improve the hardness and wear resistance of the metallurgical products.

主权项

1. A method for forming a wear resistant material comprising aluminum boride of the general formula AlB8-16 comprising:
(a) supplying a metallic system comprising (Fe52.3Mn2Cr19Mo2.5W1.7B16C4Si2.5); (b) adding up to 50 atomic percent of aluminum and boron as separate ingredients to said metallic system, forming a supersaturated solution; (c) melting said metallic system and precipitating aluminum boride from a liquid phase of said metallic system including said aluminum and said boron to form said wear resistant material, wherein said metallic system forms a matrix in which said aluminum boride is incorporated, and at least 24 atomic percent of said wear resistant material comprises aluminum and boron.