CAJ | 학술논문

采用通管滴落法研究1758 K温度下Ti-Al系合金熔体与TiN的润湿行为，结果表明：当Al的质量分数为40%、50%、60%、70%和80%时，初始接触角分别为68°、92°、106°、140°和140°，初始接触角对合金成分依赖较大。当Al含量较高时，Al会氧化生成Al 2 O 3膜包裹在液滴表面，影响初始接触角的测量，但平衡接触角对合金成分依赖较小，均小于20°，且随Al含量的增加略微减小。由于润湿后试样的界面上富集了大量的Ti和少量的Al而没有明显的化学反应产物存在，且通过计算可知合金中Ti的化学势明显高于基板中Ti的化学势，因此，在化学势差的作用下Ti向界面吸附，促进体系的润湿。此外，当Al含量大于60%时，在铺展的末期Al会显著挥发，但其对平衡接触角的影响较小。在实验中，XRD检测到的AlN和TiAl 3是由于合金与基板接触及N扩散后与合金反应生成，但其生成量很少。
채용통관적락법연구1758 K온도하Ti-Al계합금용체여TiN적윤습행위，결과표명：당Al적질량분수위40%、50%、60%、70%화80%시，초시접촉각분별위68°、92°、106°、140°화140°，초시접촉각대합금성분의뢰교대。당Al함량교고시，Al회양화생성Al 2 O 3막포과재액적표면，영향초시접촉각적측량，단평형접촉각대합금성분의뢰교소，균소우20°，차수Al함량적증가략미감소。유우윤습후시양적계면상부집료대량적Ti화소량적Al이몰유명현적화학반응산물존재，차통과계산가지합금중Ti적화학세명현고우기판중Ti적화학세，인차，재화학세차적작용하Ti향계면흡부，촉진체계적윤습。차외，당Al함량대우60%시，재포전적말기Al회현저휘발，단기대평형접촉각적영향교소。재실험중，XRD검측도적AlN화TiAl 3시유우합금여기판접촉급N확산후여합금반응생성，단기생성량흔소。
The wetting behavior of TiN by Ti-Al alloys was studied using an improved sessile drop method at 1758 K. When the mass fractions of aluminum in the alloys are 40%, 50%, 60%, 70%and 80%, the initial contact angle are 68°, 92°, 106°, 140° and 140°, respectively, the initial contact angle has a large dependent on the composition of alloys. When aluminum content is higher than 70%, it could be oxidized to Al 2 O 3 film covering the surface of drop. However, the finial equilibrium contact angles are all less than 20°, which slightly decrease with increasing the aluminum content. The interface after wetting is enriched in high content of titanium and low content of aluminum, no reactant is found. Through calculation, it is known that the chemical potential of titanium in alloys is higher than that in TiN. Under this condition, the titanium is adsorbed on the interface which improves the wetting undoubtedly. In addition, when content of aluminum is higher than 60%, Al will evaporate largely during the final period of spreading, but it has little effect on the variation of contact angle. The AlN and TiAl 3 detected by XRD are due to the slightly reaction between alloys and TiN, but the contents are low.