Tensile toughening of powder-injection-molded β Ti-Nb-Zr biomaterials by adjusting TiC particle distribution from aligned to dispersed pattern

2020 ◽  
Vol 19 ◽  
pp. 100630
Author(s):  
Peng Xu ◽  
Florian Pyczak ◽  
Ming Yan ◽  
Wolfgang Limberg ◽  
Regine Willumeit-Römer ◽  
...  
Keyword(s):  
Particle Distribution ◽  
Powder Injection ◽  
Tic Particle ◽  
Injection Molded

Sintering Behavior of the Powder Injection Molded Nanocrystalline Fe-50wt%Ni

2004 ◽  
Vol 449-452 ◽  
pp. 1141-1144 ◽  
Author(s):  
H.Y. Nam ◽  
S.K. Kwon ◽  
Young Soo Kang ◽  
Jai Sung Lee
Keyword(s):  
Particle Distribution ◽  
Powder Injection ◽  
Sintering Behavior ◽  
Impurity Effect ◽  
Microstructure Development ◽  
Sintering Process ◽  
Nano Powder ◽  
Homogeneous Particle ◽  
Injection Molded ◽  
Binder Material

Sintering process of powder injection molded (PIMed) Fe-50wt%Ni nanoalloyed powder was investigated in association with microstructure development and residual impurity effect. Compared to conventional powder metallurgical (PM) processed Fe-Ni nanoalloy powder, the PIM compact showed a homogeneous and uniform densification behavior. This is owing to more homogeneous particle distribution in the PIM resulting from preparation of feedstock which was fabricated by mixing of nano powder with thermoplastic binder. Residual impurities originating from the binder material did not have any apparent influences on sintering behavior. Conclusively, Fe-50wt%Ni nanoalloy powder is effectively applicable to the PIM parts.

A Study on the Optimization of Solvent Debinding Process for Powder Injection Molded 316L Stainless Steel Parts

2016 ◽  
Vol 1133 ◽  
pp. 324-328 ◽  
Author(s):  
Muhammad Aslam ◽  
Faiz Ahmad ◽  
P.S.M. Bm-Yousoff ◽  
Khurram Altaf ◽  
Afian Omar ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
316L Stainless Steel ◽  
Research Work ◽  
Powder Injection ◽  
Blade Mixer ◽  
Injection Molded ◽  
Debinding Process ◽  
Scanning Electron

Optimization of solvent debinding process parameters for powder injection molded 316L stainless steel (SS) has been reported in this research work. Powder gas atomized (PGA) 316L SS was blended with a multicomponent binder in Z-blade mixer at 170°C ± 5°C for 90 minutes. Feedstock was successfully injected at temperature 170 ± 5°C. Injection molded samples were immersed in n-heptane for 2h, 4h, 6h and 8h at temperatures 50°C ,55°C and 60°C to extract the soluble binder components. Scanning electron microscope (SEM) results attested that soluble binder components were completely extracted from injection molded samples at temperature 55°C after 6h.

scholarly journals Behavior of Debinding and Sintering in Micron and Submicron-Sized Copper Powder Injection Molded Parts

2013 ◽  
Vol 79 (807) ◽  
pp. 1593-1603 ◽  
Author(s):  
Kazuaki NISHIYABU ◽  
Daiki TANABE ◽  
Yasuhiro KANOKO ◽  
Shigeo TANAKA
Keyword(s):  
Copper Powder ◽  
Powder Injection ◽  
Molded Parts ◽  
Injection Molded

Microstructure, Hardness, and Wear Resistance of Powder-Injection-Molded Products of Fe-Based Metamorphic Powders

2007 ◽  
Vol 26-28 ◽  
pp. 355-358
Author(s):  
Chang Kyu Kim ◽  
Chang Young Son ◽  
Dae Jin Ha ◽  
Tae Sik Yoon ◽  
Sung Hak Lee
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Wear Resistance ◽  
Injection Molding ◽  
Powder Injection Molding ◽  
Powder Injection ◽  
Thermally Stable ◽  
Austenitic Matrix ◽  
Amorphous Phases ◽  
Injection Molded

Powder injection molding (PIM) process was applied to Fe-based metamorphic alloy powders, and microstructure, hardness, and wear resistance of the PIM products were analyzed and compared with those of conventional PIM stainless steel products. When Fe-based metamorphic powders were injection-molded and then sintered at 1200 oC, completely densified products with almost no pores were obtained. They contained 34 vol.% of (Cr,Fe)2B borides dispersed in the austenitic matrix without amorphous phases. Since these (Cr,Fe)2B borides were very hard and thermally stable, hardness, and wear resistance of the PIM products of Fe-based metamorphic powders were twice as high as those of conventional PIM stainless steel products. Such property improvement suggested new applicability of the PIM products of Fe-based metamorphic powders to structures and parts requiring excellent mechanical properties.

Gas Nitriding Mechanism in Titanium Powder Injection Molded Products

2007 ◽  
pp. 361-364
Author(s):  
Toshiko Osada ◽  
Hideshi Miura ◽  
Takanobu Yamagami ◽  
Kazuaki Nishiyabu ◽  
Shigeo Tanaka
Keyword(s):  
Titanium Powder ◽  
Powder Injection ◽  
Gas Nitriding ◽  
Injection Molded ◽  
Nitriding Mechanism

Binder Removal from Powder Injection Molded 316L Stainless Steel

2011 ◽  
Vol 11 (11) ◽  
pp. 2042-2047 ◽  
Author(s):  
Muhammad Rafi Raza ◽  
Faiz Ahmad ◽  
M.A. Omar ◽  
R.M. German
Keyword(s):  
Stainless Steel ◽  
316L Stainless Steel ◽  
Powder Injection ◽  
Binder Removal ◽  
Injection Molded

Warpage of Powder Injection Molded Copper Structure

2019 ◽  
Author(s):  
Hanlyun Cho ◽  
Jae Man Park ◽  
Junsuk Rho ◽  
Seong Jin Park
Keyword(s):  
Powder Injection ◽  
Injection Molded ◽  
Copper Structure

Residual Stress Characterization of Electroformed Ni-Base Alloy for μ-Gear Mold

2013 ◽  
Vol 773-774 ◽  
pp. 640-645
Author(s):  
Seong Ho Son ◽  
Sung Cheol Park ◽  
Hyeong Mi Kim ◽  
Won Sik Lee ◽  
Hong Kee Lee
Keyword(s):  
Residual Stress ◽  
Pulse Current ◽  
Base Alloy ◽  
Dimensional Accuracy ◽  
Powder Injection ◽  
Outer Diameter ◽  
Fe Content ◽  
Injection Molded ◽  
Fe Alloys

The micro gear molds for powder injection molding were fabricated by electroforming process of Ni-Fe alloys. The residual stress at interface between electrodeposit and substrate was important for micro electroforming. Addition of 6 g/L saccharin lowered residual stress from 466.3 MPa up to 32.8 MPa and increase of Fe content resulted in increase of residual stress. Electrodeposition by pulse current decreased residual stress in deposit although Fe content was increased. These results reveal clearly that decrease of residual stress due to pulse current is larger than increase of residual stress due to higher Fe content. The micro electroformed gear molds with 550 μm and 2,525 μm in outer diameter and 400 μm in height were fabricated by micro electroforming and 316L feedstock was injection-molded into micro molds. As a result, it is suggested strongly that micro electroforming is very useful process to manufacture micro mold with high dimensional accuracy for micro PIM.

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