本文選題：反應(yīng)材料 + 反應(yīng)熱��； 參考：《稀有金屬材料與工程》2017年10期

【摘要】：以微米級(jí)Fe、Al粉末為原料,通過(guò)冷等靜壓制備了Fe:Al質(zhì)量比分別為3:7、4:6、5:5的壓坯,并利用差示掃描量熱儀研究了不同成分配比對(duì)壓坯反應(yīng)熱的影響,確定出具有最大反應(yīng)熱的壓坯成分;采用無(wú)壓燒結(jié)法將該配比壓坯燒結(jié)成Fe-Al反應(yīng)材料,并研究了燒結(jié)溫度對(duì)該材料組織結(jié)構(gòu)與反應(yīng)熱的影響。結(jié)果表明,質(zhì)量比為Fe:Al=4:6的壓坯具有最大的反應(yīng)熱,達(dá)到 589.8 J/g;該壓坯在540℃燒結(jié)時(shí),生成少量的金屬間化合物Al_(13)Fe_4、Fe_2Al_5,使反應(yīng)熱降低,且不利于擴(kuò)散反應(yīng)的進(jìn)一步進(jìn)行;而在530℃燒結(jié)時(shí),無(wú)明顯金屬間化合物生成,反應(yīng)熱略有下降,達(dá)到 538.5 J/g。
[Abstract]:The compacts with Fe:Al mass ratio of 3: 7: 4: 6: 5 were prepared by cold isostatic pressing using micron Feanal powder as raw material. The effect of different composition on the reaction heat of compacts was studied by differential scanning calorimeter, and the compacts with maximum reaction heat were determined.The Fe-Al reaction material was sintered by pressureless sintering method, and the effect of sintering temperature on the microstructure and reaction heat of the material was studied.The results show that the compacts with a mass ratio of Fe:Al=4:6 have the maximum reaction heat, reaching to 589.8 J / g, and when the compacts are sintered at 540 鈩，

本文編號(hào)：1748976