Wear-resistant boride composites with high percentage of reinforcement phase
AssigneeIowa State University Research Foundation, Inc.
InventorsBruce Allan Cook, Joel Lee Harringa, Alan Mark Russell, Justin S. Peters, Atiq Ahmed
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Abstract
A highly wear resistant sintered, hot pressed, or otherwise compacted ceramic composite material is described, consisting of two discrete phases of the form AlxMgyB14 where x and y ≦1 or like hard, orthorhombic compounds, and TiB2 or like Group IVB transition metal di-borides, and with an unexpectedly high content of transition metal di-boride in the range from 40 to 90 percent (28 to 85 volume percent).
Claims15
A wear-resistant ceramic composite comprising a sintered, hot pressed, or otherwise compacted boride composite consisting of two discrete phases, wherein the first phase is an orthorhombic compound of the form AlxMgyB14, where x and y ≦1 and Al and/or Mg may be replaced by elements selected from the group consisting of Aluminum, Magnesium, Lithium, Gadolinium, Silver, Sodium, Thulium, Erbium, Yttrium, Holmium, Scandium and Chromium, each of which are known to form a similar chemical structure as AlMgB14, and the second phase is TiB2 or other Group IVB transition metal diborides, and where the weight percentage of transition metal diboride is within the range of from about 40 to about 90 percent.
Dependencies are inferred from the claim text.