scholarly journals Comparative Study by Image Analysis of WC-Co Alloys Elaborated by Liquid Phase Sintering and Hot Isostatic Pressing

2020 ◽  
Vol 44 (4) ◽  
pp. 263-269
Author(s):  
Hassiba Rabouhi ◽  
Youcef Khelfaoui ◽  
Abdelkrim Khireddine
Keyword(s):  
Image Analysis ◽  
Liquid Phase ◽  
Comparative Study ◽  
Hot Isostatic Pressing ◽  
Liquid Phase Sintering ◽  
Isostatic Pressing ◽  
Co Alloys

Sintering of Titanium Powder Compacts for Containerless Hot Isostatic Pressing

2009 ◽  
Vol 618-619 ◽  
pp. 509-512 ◽  
Author(s):  
Ray J. Low ◽  
Ian M. Robertson ◽  
Ma Qian ◽  
Graham B. Schaffer
Keyword(s):  
Liquid Phase ◽  
Titanium Powder ◽  
Hot Isostatic Pressing ◽  
Cost Effective ◽  
Liquid Phase Sintering ◽  
Full Density ◽  
Isostatic Pressing ◽  
Surface Densification ◽  
Powder Compacts ◽  
Made In

The liquid-phase sintering of Ti-Si binary alloys using mixed elemental powders has been explored. Sintering at low liquid contents avoids excessive porosity and bulging of compacts, and leads to development of a densified surface. Compacts made in this way can be HIPped without a container to full or near full densities. Exploiting the surface densification phenomenon may enable cost-effective net shape manufacturing of full density titanium components.

Preparation of Porous Nitinol Material by Hot-Isostatic Pressing

Materials ◽  
2005 ◽  
Author(s):  
Zhigang Xu ◽  
Cindy K. Waters ◽  
Gukan Rajaram ◽  
Jag Sankar
Keyword(s):  
Liquid Phase ◽  
Ball Milling ◽  
Energy Dispersive Spectroscopy ◽  
Hot Isostatic Pressing ◽  
Eutectic Point ◽  
Liquid Phase Sintering ◽  
X Ray Diffraction ◽  
X Ray ◽  
Isostatic Pressing ◽  
Preliminary Study

In this preliminary study, porous nitinol is fabricated using elemental Ni and Ti powders. The elemental powders were mixed at the ratio of 50:50 at.% by ball milling in preparation for pressing and sintering. The compacts were obtained by uniaxial pressing with a steel die of 12.5mm diameter. They were then subjected to hot isostatic pressing (HIPing) in an argon environment. The sintering pressure, temperature and time were varied in order to acquire porous nitinol. Porosity as high as 47.3% was achieved, which was benefited by partial liquid phase sintering. X-ray diffraction and energy dispersive spectroscopy (EDS) demonstrated that diffusion in the samples sintered at the temperature higher than the eutectic point was nearly complete, while the diffusion will take much longer time to complete at temperature lower that the eutectic point.

Investigation of liquid-phase sintering by image analysis

1995 ◽  
Vol 34 (4) ◽  
pp. 271-276 ◽  
Author(s):  
A. Molinari ◽  
J. Kazior ◽  
G. Straffelini
Keyword(s):  
Image Analysis ◽  
Liquid Phase ◽  
Liquid Phase Sintering

Variation of WC grain shape with carbon content in the WC–Co alloys during liquid-phase sintering

2003 ◽  
Vol 48 (5) ◽  
pp. 635-639 ◽  
Author(s):  
Sona Kim ◽  
Seok-Hee Han ◽  
Jong-Ku Park ◽  
Hyoun-Ee Kim
Keyword(s):  
Liquid Phase ◽  
Carbon Content ◽  
Grain Shape ◽  
Liquid Phase Sintering ◽  
Co Alloys
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