Formation of commercially pure titanium with a bimodal nitrogen diffusion phase using plasma nitriding and spark plasma sintering

2018 ◽  
Vol 330 ◽  
pp. 349-356 ◽  
Author(s):  
Shoichi Kikuchi ◽  
Hiroyuki Akebono ◽  
Akira Ueno ◽  
Kei Ameyama
2018 ◽  
Vol 37 (7) ◽  
pp. 890-896 ◽  
Author(s):  
Babatunde Abiodun Obadele ◽  
Oluwasegun Eso Falodun ◽  
Samuel Ranti Oke ◽  
Peter Apata Olubambi

2008 ◽  
Vol 385-387 ◽  
pp. 637-640 ◽  
Author(s):  
Yuki Sakamoto ◽  
Shigeaki Moriyama ◽  
Masahiro Endo ◽  
Yuji Kawakami

Titanium has widely been used as a biomaterial because of its excellent corrosion resistance and biocompatibility. However, problems with respect to biological reaction and fitness of elastic modulus for human bone or tooth have yet to be solved. Porous titanium is expected to be a promising material to solve these problems. The aim of this study is to clarify the effect of the porous structure of this material on the biomechanical compatibility. The spherical pure titanium powder, with an average particle size of 100 µm, was sintered by spark plasma sintering. The sintered porous titanium compacts had a porosity of 33 %. The specimens were machined from the sintered compacts for the evaluation of the mechanical properties. The elastic modulus indicated a value close to human bone, while the tensile and compressive strengths showed lower values than those of human bone.


2011 ◽  
Vol 217-218 ◽  
pp. 1050-1055 ◽  
Author(s):  
Yu Tong ◽  
Tian Wen Guo ◽  
Jing Wang ◽  
Hai Feng Liang ◽  
Mi Qian

The commercially pure(CP) titanium specimens were modified with Direct current(DC) plasma nitriding and arc ion plating of TiN film. The duplex treated titanium samples were characterized by scanning electron microscopy(SEM), microhardness tester and ball-on-disc tribotester. The results showed that the duplex treated CP titanium appeared uniform and bright golden, microhardness and wear resistance improved substantially and were superior to that of only TiN coated ones. All these results indicate plasma nitriding and TiN film deposition duplex treatment can improve surface characteristics of CP titanium significantly. The method can be applied to the titanium denture to improve the tribological properties and color.


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