Evaluation of powder loading and flow properties of Al2O3 ceramic injection molding feedstocks treated with stearic acid

Environmentally Efficient 316L Stainless Steel Feedstocks for Powder Injection Molding

“…In the case of carnauba wax feedstocks (Figure 2b) the change in the slope of viscosity as a function of shear rate can be distinguished as the result of apparent yield stress, which arises from the three-dimensional structure formed by the particles within this binder. PIM compounds are typically materials lacking the symmetry in their flow cause, and therefore, we have proposed the eight parameter model to describe their viscosity [22], and most recently, master curves, which might sufficiently intercept the flow performance of various PIM feedstocks with a complex dilatant/pseudoplastic flow behavior [23].…”

“…PIM compounds are typically materials lacking the symmetry in their flow cause, and therefore, we have proposed the eight parameter model to describe their viscosity [ 22 ], and most recently, master curves, which might sufficiently intercept the flow performance of various PIM feedstocks with a complex dilatant/pseudoplastic flow behavior [ 23 ].…”

Effect of Thermal Debinding Conditions on the Sintered Density of Low-Pressure Powder Injection Molded Iron Parts

“…These binder constituents were selected due to their extensive use in LPIM [33,34]. The solid loading reached in this study represents a typical value for irregular powders used in LPIM that are mainly reported for ceramicbased feedstocks [35,36]. The melting point of the feedstock was measured using a Perkin Elmer Pyris 1 differential scanning calorimeter (DSC) (Perkin Elmer, Waltham, MA, USA) according to ASTM D3418-03 [37], and the values for the second heating and cooling cycles are presented.…”

Microstructure Evolution of (MgCoNiZnCu)O High Entropy Oxides Using Ceramic Injection Molding

“…Being one of the important constituents in process of CIM, organic binders always consist of several binders: low molecular weight polymers as lubricants, macromolecular binders as backbone binders as well as a small amount of surfactant [16,22]. As a surfactant, SA used in this work has both functional group anchoring to the powder surface and the carbon chain dissolving in the binders [21], hence could improve the compatibility between binders and oxide powders. During the planetary ball milling progress, the SA has been coated on the surface of oxide powders [22], and furtherly make the organic binders tightly coated on the surface of the modi cated oxide powders after internal mixing process.…”

“…Binders used in CIM mainly consists of three functional components including: lubricants providing rheological properties for feedstock, macromolecular binders maintaining the shape integrity of green parts and debound compacts, as well as surfactants improving compatibility between ceramic powders and other organic binders [19]. CIM technology was used to fabricate a series of ceramic materials as follows: Al 2 O 3 [20,21], ZrO 2 [19,22], CaO[18], SiO 2 [23], MgAl 2 O 4 [24,25], SiC[26], B 4 C [27], AlN [13], Si 3 N 4 [28] and ZrB 2 [29] et al Through this near net shaping CIM process, a large quantity of ceramic parts have been synthesized in recent years. Qin et al [13] reported the CIM of complex shaped AlN ceramic with high thermal conductivity and successfully synthesized AlN heat sinks.…”