Effect of sintering pressure on microstructure and mechanical properties of hot-pressed Ti6Al4V-ZrO2 materials

Abstract

This study proposes a bilayered materials design approach obtained by hot pressing for biomedical applications. • The effect of sintering pressure on chemical composition and mechanical properties (namely H and E) was studied. • Interface reaction and mechanical properties are strongly dependent on sintering pressure. • The highest hardness and modulus were found for materials produced at P=100 MPa. • An interesting blackening phenomenon on ZrO 2 layer was described and discussed in light of the variation of O/ Zr ratio.

Enhanced biomedical applicability of ZrO2–SiO2 ceramic composites in 3D printed bone scaffolds

“…8 , it can be seen that the OD values of the MTT assay for S5Z5 and Z10 were 1.6 and 0.3, respectively, after 144 h of culturing. S5Z5 showed the best cell affinity among the composites, especially compared to ZrO 2 (i.e., Z10 in the test), which has long been used in clinical applications (such as dental implants and ball heads of femoral implants) 48 . Only for ZrO 2 was the reduction of cell proliferation reduced greatly.…”

Nanomechanical and Tribological Properties of Hexagonal-Boron Nitride-Enhanced Sintered Titanium Alloy Matrix Composites

“…where Dt, Dm and Dr are the theoretical densities of the TMC, Ti6Al4V alloy matrix (4.43 g/cm 3 ) and h-BN reinforcement (2.3 g/cm 3 ), respectively; Wm and Wr are the weight fractions of the Ti6Al4V alloy matrix and h-BN reinforcement, respectively; W is the quantity (in gram) of the TMC powder to be loaded into the prepared die assembly and πr 2 h is the volume of the experimental sample of dimensions 30mm diameter by 10mm height. The calculated powders were carefully measured in a plastic container with an electronic weighing balance of high precision accuracy of 0.001g and subsequently blended in a tubular mixer set at the operating speed of 100 rev/min for 10 hours.…”

“…The need for the development of advanced materials with superior performance properties in engineering applications remains an ever-growing quest [1]. The dual phase (α+β) titanium alloy, Ti6Al4V is the most sought-after titanium alloy for most-used energy-saving applications by manufacturers in aerospace and automobile industries due to its excellent blend of mechanical, physical and chemical properties, and a long history of application [2][3]. Even so, low hardness and poor tribological properties have restricted the extensive industrial applications of the titanium alloy [4][5].…”

Additive manufacturing of NiTi-Ti6Al4V multi-material cellular structures targeting orthopedic implants

“…4 ) using a load of 400 mN. The elastic modulus was estimated from the loaddisplacement curves, by using the following equation [62] :…”