CAJ | 학술논문

以Cu和表面镀有Cu的Ti3SiC2粉末为原料，采用温压压制成形和复压复烧技术制备一系列Cu-Ti3SiC2复合材料，研究不同烧结温度、Ti3SiC2含量以及复压复烧对材料性能的影响。采用XRD衍射仪、环块式摩擦磨损试验机等测试手段，研究Cu-Ti3SiC2复合材料的物相组成和摩擦磨损行为。研究结果表明：以800℃烧结可制得不含杂质的纯Cu-Ti3SiC2复合材料；而以1000℃烧结制得的复合材料中含有TiC和TiSi2杂质，这些杂质可影响材料的导电性能和减摩能力。复压复烧可使材料的密度、硬度以及导电性能得到不同程度的提高，尤其对于高Ti3SiC2含量的材料，其作用更为明显。
이Cu화표면도유Cu적Ti3SiC2분말위원료，채용온압압제성형화복압복소기술제비일계렬Cu-Ti3SiC2복합재료，연구불동소결온도、Ti3SiC2함량이급복압복소대재료성능적영향。채용XRD연사의、배괴식마찰마손시험궤등측시수단，연구Cu-Ti3SiC2복합재료적물상조성화마찰마손행위。연구결과표명：이800℃소결가제득불함잡질적순Cu-Ti3SiC2복합재료；이이1000℃소결제득적복합재료중함유TiC화TiSi2잡질，저사잡질가영향재료적도전성능화감마능력。복압복소가사재료적밀도、경도이급도전성능득도불동정도적제고，우기대우고Ti3SiC2함량적재료，기작용경위명현。
Using Cu and Cu coated Ti3SiC2 powders as raw materials, a series of Cu-Ti3SiC2 composites were prepared by employing warm compaction forming and double-press double-sinter techniques. Effects of sinter temperature, Ti3SiC2 content and double-press double-sinter on the properties of the prepared composites were studied. Composition and tribological behavior of the Cu-Ti3SiC2 composites were studied by X-ray diffractometer and a block-on-ring tribotester,respectively. Results show that Cu-Ti3SiC2 composites without impurity can be fabricated by sintering at 800℃; however, composites obtained by sintering at 1 000 ℃ contain TiC and TiSi2 impurities, which eventually impose adverse effect on the electrical conductivity and anti-friction ability of the composite. Double-press double-sinter can improve the density, hardness and electrical conductivity of the composites to certain degree, especially for the composite with high Ti3SiC2 content.