Corrosion and Cytotoxicity Evaluation of AISI 316L Stainless Steel Produced by Powder Injection Molding (PIM) Technology

Author(s):  
Isolda Costa ◽  
Sizue Ota Rogero ◽  
Olandir Vercino Correa ◽  
Clarice Terui Kunioshi ◽  
Mitiko Saiki
2005 ◽  
Vol 498-499 ◽  
pp. 86-92 ◽  
Author(s):  
Isolda Costa ◽  
Sizue Ota Rogero ◽  
Olandir Vercino Correa ◽  
Clarice Terui Kunioshi ◽  
Mitiko Saiki

This study investigates the in vitro corrosion and cytotoxicity response of AISI 316L stainless steel produced by powder injection molding (PIM) technology in a solution that simulates physiological fluids (MEM) by electrochemical techniques and neutral red uptake cytotoxicity assay. The results were compared with those of AISI 316L produced by conventional metallurgy. Both steels showed high corrosion resistance and no toxic effect in the cytotoxicity test. The corrosion products were analyzed by instrumental neutron activation analysis (INAA). The surfaces of the alloys were evaluated before and after corrosion test by scanning electron microscopy and a passive behaviour was indicated supporting the results from other techniques.


Polymers ◽  
2020 ◽  
Vol 12 (6) ◽  
pp. 1296
Author(s):  
Berenika Hausnerova ◽  
Martin Novak

In this study, environmentally convenient highly metal powder filled feedstocks intended for powder injection molding is presented. The composition of 60 vol % 316L stainless steel gas atomized powder feedstocks containing semicrystalline waxes: acrawax or carnauba wax and paraffin wax, combined with polyethylene glycol and modifier, was optimized to provide defect-free parts. Rheological as well as thermogravimetric analyses supported with scanning electron microscopy and metallography were employed to set up optimum conditions for molding, debinding and sintering. The performance of the novel feedstock was compared with currently available polyolefines-based materials, and results showed an efficiency enhancement due to the substantially lower (about 100 °C) mixing and molding temperatures as well as a reduction of debinding and sintering times at the simultaneous achievement of better mechanical properties in terms of elongation and tensile strength, in comparison to the mass production feedstock.


2005 ◽  
Vol 54 (3) ◽  
pp. 230-238 ◽  
Author(s):  
L. Liu ◽  
N.H. Loh ◽  
B.Y. Tay ◽  
S.B. Tor ◽  
Y. Murakoshi ◽  
...  

Wear ◽  
2010 ◽  
Vol 268 (7-8) ◽  
pp. 1013-1019 ◽  
Author(s):  
Junhu Meng ◽  
Ngiap Hiang Loh ◽  
Bee Yen Tay ◽  
Gang Fu ◽  
Shu Beng Tor

2015 ◽  
Vol 279 ◽  
pp. 196-202 ◽  
Author(s):  
Joon-Phil Choi ◽  
Geon-Yong Lee ◽  
Jun-Il Song ◽  
Won-Sik Lee ◽  
Jai-Sung Lee

2019 ◽  
Vol 25 (3) ◽  
pp. 246-251 ◽  
Author(s):  
Feng SHANG ◽  
Bin QIAO ◽  
Yan-feng DONG ◽  
Zhen-wei CAO ◽  
Wei SUN ◽  
...  

By utilizing the FLUENT software, finite element simulation analysis was performed on the two-phase separation of powder injection molding, and the simulation results were verified through experiment. As indicated in the simulation results, the optimal process parameters for the injection molding of 316L stainless steel sample were to inject at 70 MPa and 140 °C, at an injection speed of 3.49 cm3/s. Under these conditions, the maximum average solid volume fraction in observation area of the sample was 57.68 %. Additionally, it was discovered that while preparing 316L stainless steel was prepared by powder injection molding, the smaller the average porosity of the sample, the greater the Vickers hardness. And then the higher the average solid volume fraction simulated the slighter the two-phase separation between the powder and the binder. DOI: http://dx.doi.org/10.5755/j01.ms.25.3.19137


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