(西安石油大學(xué) 材料科學(xué)與工程學(xué)院，西安 710065)
摘 要: 以Ti粉和高純石英管為原料，結(jié)合冷等靜壓和真空燒結(jié)工藝，制備了以多孔鈦為基體、Ti-Si金屬間化合物為多孔膜層的復(fù)合多孔材料。通過XRD、EDS、SEM對(duì)燒結(jié)產(chǎn)物的物相組成、微觀結(jié)構(gòu)進(jìn)行了觀察分析。結(jié)果表明：該復(fù)合多孔材料Ti-Si金屬間化合物多孔膜層的厚度為2~3 μm，孔徑小于0.3 μm；同時(shí)研究了不同粉末粒度區(qū)間的Ti粉對(duì)Ti-Si多孔膜成膜均勻性的影響。本研究采用限域內(nèi)原位反應(yīng)燒結(jié)工藝通過一次燒結(jié)成功制備出以多孔鈦為基體、Ti-Si金屬間化合物為多孔膜層的復(fù)合多孔材料，為金屬梯度多孔材料的制備提供了一種新途徑。
關(guān)鍵字: 多孔膜材料；原位反應(yīng)；Ti-Si金屬間化合物；復(fù)合多孔材料
（College of Materials and Engineering, Xi’an Shiyou University, Xi’an 710065, China）
Abstract:Ti powder and high-purity quartz tube were used as raw materials, and combined with cold isostatic pressing and vacuum sintering process, a new porous material using porous titanium as matrix and Ti-Si intermetallic compound as porous membrane was prepared. The phase composition and microstructure of the sintered product were observed and analyzed by XRD, EDS and SEM. The results show that the thickness and pore size of the Ti-Si intermetallic compound porous membrane are 2-3 μm and less than 0.3 μm. At the same time, the effect of Ti powder in different particle size ranges on the uniformity of Ti-Si porous membrane was also studied. A composite porous material using porous titanium as matrix and Ti-Si intermetallic compound as porous membrane was successfully prepared by in-situ reaction sintering in a limited zone, which provides a new way for the preparation of metal gradient porous materials.
Key words: porous material; in-situ reaction; Ti-Si intermetallic compound; composite porous material
