发明名称 |
MULTIMODAL STRUCTURED HARDCOATINGS MADE FROM MICRO-NANOCOMPOSITE MATERIALS |
摘要 |
<p>A thermal spray method for the fabrication of ceramic/metal and ceramic/ceramic hardcoatings for wear applications. The method makes use of feedstock powder, composed of micron-scale aggregates of hard phase material particles that are either mixed or coated with a readily fusible nano-scale binder phase material (12). Thus, during thermal spraying (14), the nanostructured material undergoes rapid melding while the aggregated material is heated but not necessarily melted. A dense coating is formed when the molten nano-material fills the available pore spaces between the heated and softened aggregates, providing a strong and tough matrix for the consolidated material. Optimal wear properties are achieved when the volume fraction of aggregated particles is high, typically in the range 0.5-0.9. Aggregated material may be composed of one, two or more particles of different sizes and/or compositions, with particle size distribution that gives high packing density for the hard phase.</p> |
申请公布号 |
WO0112431(A1) |
申请公布日期 |
2001.02.22 |
申请号 |
WO2000US22340 |
申请日期 |
2000.08.16 |
申请人 |
RUTGERS, THE STATE UNIVERSITY;NANOPOWDER ENTERPRISES INCORPORATED;KEAR, BERNARD, H.;SKANDAN, GANESH |
发明人 |
KEAR, BERNARD, H.;SKANDAN, GANESH |
分类号 |
C23C4/06;C23C4/10;(IPC1-7):B32B9/00;C22C29/00 |
主分类号 |
C23C4/06 |
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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