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首页> 外文会议>International Conference on Manufacturing Engineering and Intelligent Materials >Optimization of SiCp Surface and Interface Structure of SiCp/A390 Composites
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Optimization of SiCp Surface and Interface Structure of SiCp/A390 Composites

机译：SICP / A390复合材料SICP表面和界面结构的优化

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SiCp/A390 (SiC particle reinforced Al matrix) composites before and after SiC particles surface modification were manufactured respectively by powder metallurgy, and the mass fraction of SiCp is 20%. The surface morphology of SiCp and the interface morphology of SiC/Al and SiC/Si of composites were characterized by TEM. The chemical state of interface material of SiCp/A390 composites was tested by XPS. The effect of surface modification of SiCp on interface structure of composites and thermodynamic principle of mechanism of interface formation of SiCp/A390 were researched. The results show that SiCp morphology was changed though surface optimization treatment, the dense SiO_2 oxide layer on the surface of SiCp was formed when SiC particles were roasted at 1000°C, which thickness membrane is about 50 nm. Before SiC particles surface modification, the interface of SiC/Al of composites is clear, clean interface, and discovered a small amount of amorphous layer interface of SiC/Al. While, after SiC optimization, the interface of SiC/Al of composites is an amorphous layer between two phases, and there is no Al_4C_3 in SiCp/A390 composites. Surface modification treatment of SiCp can increase chemical reaction degree of the interface of composites, and effectively improve the interface bonding of SiC and Al.
机译：SiCP / A390（SiC颗粒增强Al基质）复合材料在SiC颗粒表面改性之前和之后分别通过粉末冶金制造，SICP的质量分数为20％。 TEM通过TEM表征SiCP的表面形态和SiC / Al和SiC / Si的界面形态。通过XPS测试SICP / A390复合材料的界面材料的化学状态。研究了SICP对复合材料界面结构的表面改性的影响，以及SICP / A390界面形成机理的热力学原理。结果表明，虽然表面优化处理改变了SICP形态，当SiC颗粒在1000℃下烘烤时，形成SICP表面上的致密SiO_2氧化物层，该厚度膜为约50nm。在SiC颗粒表面改性之前，复合材料的SiC / Al的界面是透明的，干净的界面，并发现SiC / Al的少量非晶层界面。虽然在SIC优化之后，复合材料的SiC / Al的界面是两个阶段之间的非晶层，并且SICP / A390复合材料中没有AL_4C_3。 SICP的表面改性处理可以增加复合材料界面的化学反应程度，有效地改善SiC和Al的界面键合。

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