| 发明名称 |
METAL MATRIX COMPOSITE AND METHOD OF FORMING |
| 摘要 |
Use of Ca in metal matrix composites (MMC) allows for incorporation of small and large amounts of ceramic (e.g. rutile Ti02) into the metal (Al, or its alloys). Calcium remains principally out of the matrix and is part of a boundary layer system that has advantages for integrity of the MMC. Between 0.005 and 10 wt. % calcium (Ca) may be included, and more than 50 wt. % of rutile has been shown to be integrated. Rutile may therefore be used to reduce melt loss due to calcium from an aluminum or aluminum alloy melt. |
| 申请公布号 |
US2015376745(A1) |
申请公布日期 |
2015.12.31 |
| 申请号 |
US201414767170 |
申请日期 |
2014.02.11 |
| 申请人 |
National Research Council of Canada |
发明人 |
BOUCHARD Dominique |
| 分类号 |
C22C32/00;B22D19/14;C22C30/00;C22C1/02;C22C21/00;C22C14/00 |
主分类号 |
C22C32/00 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A method for producing a metal matrix composite comprising:
stirring a reinforcement with an aluminum-containing molten or semisolid metal or alloy and between 0.005 and 10 wt. % calcium (Ca), wherein the reinforcement is composed of particles each having a surface with a surface area bearing at least 20% of titanium oxide (TiO2), and the TiO2 is of crystal form other than anatase; and cooling the mixture to produce a solid metal matrix composite. |
| 地址 |
Ottawa CA |
