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US 9,845,268 B2Granted
Sintered ceramic bodies and applications thereof
AssigneeKennametal Inc.
InventorsJason Goldsmith, Sheng Chao
Life of this patent
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Abstract
In one aspect, sintered ceramic bodies are described herein which, in some embodiments, demonstrate improved resistance to wear and enhanced cutting lifetimes. For example, a sintered ceramic body comprises tungsten carbide (WC) in an amount of 40-95 weight percent, alumina in an amount of 5-30 weight percent and ditungsten carbide (W2C) in an amount of at least 1 weight percent.
Claims23
A sintered ceramic body comprising:
- tungsten carbide (WC), alumina (Al2O3) in an amount of 5-30 weight percent, ditungsten carbide (W2C) in an amount of at least 1 weight percent and zirconia in an amount of 0.1-10 weight percent.
A sintered ceramic body comprising:
- tungsten carbide (WC), alumina (Al2O3) in an amount of 5-30 weight percent, ditungsten carbide (W2C) in an amount of at least 1 weight percent and one or more titanium (Ti) compounds, molybdenum (Mo) compounds or (Ti,Mo)-compounds.
A sintered ceramic body comprising:
- tungsten carbide (WC), alumina (Al2O3) in an amount of 5-30 weight percent, ditungsten carbide (W2C) in an amount of at least 1 weight percent and aluminum oxynitride (AlON).
A sintered ceramic body comprising:
- tungsten carbide (WC), alumina (Al2O3) in an amount of 5-30 weight percent, ditungsten carbide (W2C) in an amount of at least 1 weight percent and an additive component comprising one or more Group VB metal carbides, chromium carbide, ZrNbC or mixtures thereof.
Dependencies are inferred from the claim text.