(中南大學(xué) 粉末冶金國家重點(diǎn)實(shí)驗(yàn)室， 長沙 410083)
摘 要: 通過鋪展實(shí)驗(yàn)和滲透實(shí)驗(yàn)考查添加鈦對銅與C/C復(fù)合材料潤濕性能的影響。 采用真空熔滲的方法成功地將銅合金液滲入到C/C復(fù)合材料坯體中。 對滲銅后形成的C/C-Cu復(fù)合材料進(jìn)行X射線衍射、 金相和掃描電鏡分析。 結(jié)果表明， 加入12%～16％(質(zhì)量分?jǐn)?shù))的鈦元素粉末使銅在C/C復(fù)合材料表面有好的鋪展性能； 含鈦銅合金滲入到C/C復(fù)合材料中有TiC形成。 添加鈦元素能改善C/C復(fù)合材料滲銅性能的主要原因是改善銅在C/C復(fù)合材料中的化學(xué)吸附和物理吸附特性； 通過毛細(xì)管力作用， 合金液滲入到C/C復(fù)合材料坯體中。
關(guān)鍵字: C/C復(fù)合材料； 熔滲； 銅； 鈦； 潤濕性
（State Key Laboratory of Powder Metallurgy, Central South University,
Changsha 410083, China）
Abstract: The influence of adding titanium on the wettability of molten copper on the surface of C/C composites preform was investigated by spreading and infiltrating experiment. Copper infiltrated into the preform successfully， and C/C-Cu composites were prepared by the molten infiltration. The composites were analysed by X-ray diffraction(XRD), optical microscope(OM), scanning electronic microscope(SEM). The results show that copper added 12%-16% (mass fraction) titanium possesses good wettability on the surface of C/C composites preform; the molten copper alloy containing titanium infiltrates into the preform, and TiC phase forms in the C/C-Cu composites. The improvement of adding titanium for molten copper infiltration into the C/C composites preform results from the improvement of the chemical and physical adsorption characteristic of copper on the composites. The liquid copper alloy infiltrates into the preform under the capillary pressure.
Key words: C/C composites; infiltration; Cu; Ti; wettability
