Surface modification induced phase transformation and structure variation on the rapidly solidified recast layer of titanium

Evaluation of Surface Characteristics and Hemocompatibility on the Oxygen Plasma-Modified Biomedical Titanium

“…Evidently, it indicated that the samples possess surface hydrophilicity, since their angles are smaller than 90 • [10,25]. The sample treated for 30 min exhibited a slightly higher hydrophilic surface than that of 10 min and 20 min treated samples, as well as the control Ti sample [16]. A similar feature can also be observed on the plasma-oxidized samples under 240 W for various periods.…”

“…The coagulation is the first step of bone healing. Ti oxide film on Ti affects the absorption rate of albumin/fibrinogen [16,28] The FE-SEM images of RBCs morphology from the control and plasma-oxidized samples after blood contact for 10 min are shown in Figure 6. Clearly, the control sample (Figure 6a) induced fewer aggregations of RBCs at 10 min than that induced by the plasma-oxidized samples.…”

“…The coagulation is the first step of bone healing. Ti oxide film on Ti affects the absorption rate of albumin/fibrinogen [16,28]. Park et al have discussed the adhesion of blood cells such as platelets, red blood cells and leukocytes in terms of the surface topography of the implants [29,30].…”

“…Ti oxides are recognized as a promising biomaterial with proven biocompatibility [15,16]. Plasma oxidation treatment is a potential green processing technology to generate the oxide layers, because it possesses some advantages such as an all-dry process (decreasing water consumption), environmental friendliness (no waste chemicals), ability to treat temperature sensitive materials and low unit cost per treatment in comparison with other common anodic and thermal oxidation methods [17].…”

Fabrication of a Promising Hierarchical Porous Surface on Titanium for Promoting Biocompatibility

“…Recently, various techniques-including thermal oxidation, anodization, and sol-gel methods-have been extensively used to investigate for the formation of Ti oxide layers [23,24]. Previous studies also reported that the formation of a nanoporous or hybrid porous (micro and nanoporous) Ti oxide layer on Ti surface not only enhanced cell adhesion and proliferation but also promoted the early stages of bone healing and osseointegration [10,25]. Based on the improvement of Ti dental implant, herein, we developed a potential approach (hydrogen fluoride (HF) pretreatment and sodium hydroxide (NaOH) anodization) to form a hierarchical porous (micro and nanoporous) Ti oxide surface.…”