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

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.

Download Full-text

Study on the sintering behavior and microstructure development of the powder injection molded T42 high-speed steel

Metals and Materials International ◽

10.1007/s12540-011-6011-y ◽

2011 ◽

Vol 17 (6) ◽

pp. 937-942 ◽

Cited By ~ 3

Author(s):

Kyoung-Rok Do ◽

Sung-Hyun Choi ◽

Young-Sam Kwon ◽

Dong-Wook Park ◽

Kwon-Koo Cho ◽

...

Keyword(s):

High Speed ◽

High Speed Steel ◽

Powder Injection ◽

Sintering Behavior ◽

Microstructure Development ◽

Injection Molded

Download Full-text

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

Applied Materials Today ◽

10.1016/j.apmt.2020.100630 ◽

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

Download Full-text

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

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1133.324 ◽

2016 ◽

Vol 1133 ◽

pp. 324-328 ◽

Cited By ~ 1

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.

Download Full-text

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

TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A ◽

10.1299/kikaia.79.1593 ◽

2013 ◽

Vol 79 (807) ◽

pp. 1593-1603 ◽

Cited By ~ 1

Author(s):

Kazuaki NISHIYABU ◽

Daiki TANABE ◽

Yasuhiro KANOKO ◽

Shigeo TANAKA

Keyword(s):

Copper Powder ◽

Powder Injection ◽

Molded Parts ◽

Injection Molded

Download Full-text

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

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.26-28.355 ◽

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.

Download Full-text

Pressureless sintering behavior of injection molded alumina ceramics

Science of Sintering ◽

10.2298/sos1401003l ◽

2014 ◽

Vol 46 (1) ◽

pp. 3-13 ◽

Cited By ~ 4

Author(s):

W. Liu ◽

Z. Xie

Keyword(s):

Detrimental Effect ◽

Pore Space ◽

Critical Role ◽

Solid Loading ◽

Sintering Behavior ◽

Alumina Powder ◽

Pressureless Sintering ◽

Alumina Ceramics ◽

Injection Molded ◽

Full Densification

The pressureless sintering behaviors of two widely used submicron alumina (MgOdoped and undoped) with different solid loadings produced by injection molding have been studied systematically. Regardless of the sinterability of different powders depending on their inherent properties, solid loading plays a critical role on the sintering behavior of injection molded alumina, which greatly determines the densification and grain size, and leads to its full densification at low temperatures. As compared to the MgO-doped alumina powder, the undoped specimens exhibit a higher sinterability for its smaller particle size and larger surface area. While full densification could be achieved for MgO-doped powders with only a lower solid loading, due to the fact that MgO addition can reduce the detrimental effect of the large pore space on the pore-boundary separation.

Download Full-text