论文部分内容阅读
陶瓷喷墨打印是一种基于微滴累加的成形技术,典型的微滴体积为10~100 pL。实现微滴累加成形的关键是开发稳定的陶瓷墨水,合适的墨水需要满足由雷诺数和韦伯数定义的流变特性参数空间。在微滴累加成形过程中,微滴首先与成形面碰撞变形并消耗动能,然后在毛细管力作用下铺展并达到平衡状态。已经可以确定的是打印过程中微滴相互作用并形成一维线性特征的机理,但是对二维和三维结构成形机理的认识还处于较低水平,成形二维面的稳定性低于成形一维线性结构。多数情况下,墨水通过蒸发固化,微滴碰撞基体所产生的“咖啡环”缺陷需要通过固化工艺加以控制。已经有大量文献报道了使用喷墨打印技术成形各种类型小型陶瓷零件的成功案例。作为一种未来的制造技术,陶瓷喷墨打印技术有广阔的应用前景。本综述的目的是探索陶瓷喷墨打印技术未来潜在的研究领域,加强对这种制造方法的理解。
Ceramic inkjet printing is a droplet additive based forming technique with a typical droplet volume of 10-100 pL. The key to realize the droplet additive forming is to develop a stable ceramic ink. The suitable ink needs to meet the rheological parameter space defined by the Reynolds number and the Weber number. During the droplet forming process, the droplets first collide with the forming surface and dissipate kinetic energy, which then spreads and reaches equilibrium under the capillary force. It has been confirmed that there is a mechanism of microdroplet interaction and a one-dimensional linear feature during printing. However, the recognition of the forming mechanism of two-dimensional and three-dimensional structures is still low, and the stability of the formed two-dimensional surface is lower than that of the formed one-dimensional Linear structure. In most cases, the ink is cured by evaporation and the “coffee ring” defects created by the droplets striking the substrate need to be controlled by the curing process. There have been a number of successful reports of forming various types of small ceramic parts using inkjet printing technology. As a future manufacturing technology, ceramic inkjet printing technology has broad application prospects. The purpose of this review is to explore the potential area of future research for ceramic inkjet printing technology and to enhance understanding of this manufacturing method.