本文選題：MoSi　切入點(diǎn)：B(T)　出處：《金屬學(xué)報(bào)》2015年11期 　論文類型：期刊論文

【摘要】：分別通過還原氣氛常壓燒結(jié)法(TFS)和放電等離子燒結(jié)法(SPS)制備Mo5Si B2(T2)相合金,并采用XRD,SEM和TEM等方法對(duì)合金的微觀結(jié)構(gòu)進(jìn)行表征.結(jié)果表明:快的升溫速率是合成T2相的動(dòng)力學(xué)條件,相比傳統(tǒng)燒結(jié)方式,SPS法以獨(dú)特的等離子活化燒結(jié)方式提供快的加熱速率,能夠在較短的時(shí)間內(nèi)升溫到所需溫度1500℃,避免Mo,Si和B混合粉末在中溫區(qū)間(600~1200℃)通過固-固反應(yīng)生成Mo3Si,Mo5Si3和Mo B等二元相,而通過固-液反應(yīng)原位合成T2相.合金平均晶粒尺寸為1.44 mm,晶界清晰、潔凈、無(wú)過渡區(qū)且在晶體內(nèi)沒有觀察到位錯(cuò)等缺陷.
[Abstract]:Mo5Si B _ 2T _ 2) phase alloys were prepared by reduction atmosphere sintering under atmospheric pressure and spark plasma sintering (SPS), respectively. The microstructure of the alloys was characterized by XRD-SEM and TEM. The results show that the rapid heating rate is the kinetic condition for the synthesis of T _ 2 phase. Compared with the traditional sintering method, SPS provides a rapid heating rate with a unique plasma activated sintering method, and can be heated to 1500 鈩，

本文編號(hào)：1622155