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Development of metallic glass composite with zero-thermal expansion using negative thermal expansion materials and the evaluation of machinability

采用负热膨胀材料的零热膨胀金属玻璃复合材料的开发及切削加工性评价

基本信息

批准号：
22760523
负责人：
TERAJIMA Takeshi
金额：
$ 2.75万
依托单位：
Osaka University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Young Scientists (B)
财政年份：
2010
资助国家：
日本
起止时间：
2010 至 2011
项目状态：
已结题

项目摘要

Aim of this study is development amorphous alloy composite with zero thermal expansion coefficient by combining positive and negative thermal expansion materials. Metallic glass(amorphous) Fe_<43>Cr_<16>Mo_<16>C_<15>B_<10> and anti-perovskite nitride Mn_3(Cu_<0.53>Ge_<0.47>) N, which exhibits negative thermal expansion in a temperature range of 270 K-350K, were successfully sintered at 863K, which is equal to a glass transition temperature of Fe_<43>Cr_<16>Mo_<16>C_<15>B_<10> metallic glass, by spark plasma sintering(SPS) method. Viscous flow in a super-cooled state of Fe_<43>Cr_<16>Mo_<16>C_<15>B_<10> metallic glass enabled the sintering at such a low temperature, while amorphous structure of the Fe_<43>Cr_<16>Mo_<16>C_<15>B_<10> metallic glass was maintained during SPS process. The coefficient of thermal expansion of the composite exhibited almost zero in a range of 263 K-353K.

本研究的目的是将正负热膨胀材料相结合，开发出零热膨胀系数的非晶合金复合材料。采用火花等离子烧结（SPS）方法，在温度为270 k ~ 350k的863K条件下，成功烧结出了Fe_<43>Cr_<16>Mo_<16>C_<15>B_<10>的非晶金属玻璃（Fe_<43>Cr_<16>Mo_<16>C_<15>B_<10>）和抗钙钛矿氮化物Mn_3(Cu_<0.53>Ge_<0.47>) N，其玻璃化转变温度为Fe_<43>Cr_<16>Mo_<16>C_<15>B_<10>。Fe_<43>Cr_<16>Mo_<16>C_<15>B_<10>金属玻璃在过冷状态下的粘性流动使其能够在如此低的温度下烧结，而在SPS过程中，Fe_<43>Cr_<16>Mo_<16>C_<15>B_<10>金属玻璃保持了非晶态结构。在263 K-353K范围内，复合材料的热膨胀系数几乎为零。