Debinding behaviour of feedstock for material extrusion additive manufacturing of zirconia

Figures & data

Figure 1. Strain-stress (ε – σ) curves for filaments containing stainless steel (316L), titanium alloy (Ti6Al4V), neodymium alloy (NdFeB), strontium ferrite (SrFe₁₂O₁₉) and yttria stabilised zirconia (YSZ) [11].

Figure 2. Examples of parts build by FFF with 5 powder types: stainless steel (316L), titanium alloy (Ti6Al4V), neodymium alloy (NdFeB), strontium ferrite (SrFe₁₂O₁₉) and yttria stabilised zirconia (YSZ) [11].

Figure 3. (a) Mass loss of soluble binder component for feedstocks with stainless steel (316L), titanium alloy (Ti6Al4V), neodymium alloy (NdFeB), strontium ferrite (SrFe₁₂O₁₉) and yttria stabilised zirconia (YSZ); (b) specimens after debinding in cyclohexane at 60°C at different times [11].

Table 1. Parameters employed for the production of specimens by compression moulding.

Stage		1	2	3
Time	min	40	5	20
Temperature	°C	175	175	30
Pressure	bar	1	50	50

Figure 4. Defects observed in solvent debound specimens at different times and temperatures for feedstock A.

Figure 5. (a) Loss of soluble binder and (b) length change over time at different temperatures for feedstock A.

Figure 6. Defects observed in solvent debound specimens for feedstocks without (feedstock A) and with SA (feedstock B).

Figure 7. (a) Loss of soluble binder and (b) length change over time at 60°C for feedstocks without (feedstock A) and with SA (feedstock B).

Figure 8. Defects observed in solvent debound specimens after debinding in different solvents at 1, 3.5 and 6 h.

Figure 9. (a) Mass loss of soluble binder and (b) length change over time in different solvents.

Kukla C, Gonzalez-Gutierrez J, Cano S, et al. Fused filament fabrication (FFF) of PIM feedstocks. VI Congreso Nacional de Pulvimetalurgia y I Congreso Iberoamericano de Pulvimetalurgia; Ciudad Real, Castilla La Mancha, Spain. Comité Español de Pulvimetalurgia, 1–6.

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