发明名称 |
ALPHA-BETA SIALON BALLISTIC CERAMIC ARMOR |
摘要 |
A SiAlON ceramic armor made from a starting powder mixture. The ceramic armor contains between about 60 weight percent and about 98 weight percent alpha SiAlON phase that contains an alpha SiAlON-bound rare earth element and between about 2 weight percent and about 40 weight percent of a beta SiAlON phase of the formula Si6-zAlzOzN8-z wherein the value of "z" ranges between about 0.2 and about 1.0. The ceramic armor further comprising sintering aid residue present as a result of the starting powder mixture containing between about 4 weight percent and about 14 weight percent of an oxide of an alpha SiAlON-bound rare earth element. The ceramic armor has a fracture toughness (KIC) greater than about 6.00 M.Pa m½ and a Vickers hardness (HVN) equal to greater than about 17.5 GPa. |
申请公布号 |
WO2008100654(A3) |
申请公布日期 |
2008.11.27 |
申请号 |
WO2008US50461 |
申请日期 |
2008.01.08 |
申请人 |
KENNAMETAL INC.;YECKLEY, RUSSELL L. |
发明人 |
YECKLEY, RUSSELL L.;ALL CAPS-LAST NAME, NORMAL |
分类号 |
F41H5/00;C04B35/58;C04B35/599 |
主分类号 |
F41H5/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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