scholarly journals Experimental Investigation of Physical and Mechanical Properties of Steel Powder Filled Disc Brake Friction Materials

2019 ◽  
Vol 30 (2) ◽  
pp. 81-97
Author(s):  
Pradnya Eknath Kosbe ◽  
◽  
Pradeep Anandrao Patil ◽  
Muthukumar Manickam ◽  
Gurunathan Ramamurthy ◽  
...  
2018 ◽  
Vol 770 ◽  
pp. 248-254
Author(s):  
Leandro Bolzoni ◽  
Elisa Maria Ruiz-Navas ◽  
Elena Gordo

Cheap alloying elements and creative processing techniques are a way forward to open up more industrial opportunities for Ti in sectors where it is not extensively applied yet, rather than in aerospace and biomedical applications. This study focuses on understanding the joint effect of using a commercial steel powder to add Fe to pure Ti and its processing by press-and-sinter on the behaviour of low-cost PM Ti alloys. It is found that the calibrated addition of steel permits to develop new low-cost Fe-bearing Ti alloys that can satisfactorily be produced using the blending elemental PM approach. Densification of the samples and homogenization of the chemical composition are enhanced by the high diffusivity of Fe. The low-cost α+β alloys reach comparable physical and mechanical properties to those of wrought-equivalent PM Ti alloys, such as Ti-6Al-4V, and are therefore promising candidates for load-bearing lightweight products.


2019 ◽  
Vol 824 ◽  
pp. 59-66
Author(s):  
Thanaporn Wilairat ◽  
Nattawut Saechin ◽  
Wantanee Buggakupta ◽  
Pornapa Sujaridworakun

Hot molding is one of the most important processes for the manufacture of friction materials in automotive brake systems. That is because it has direct impacts on the physical and mechanical properties. Porosity and compressibility affect properties like brake vibration. This then affects brake noise. Therefore, the objective of this work was to study the effects of hot molding conditions on the porosity and compressibility of friction materials. The crucial parameters; molding pressure, temperature and holding time were varied in the hot molding process. Porosity and compressibility were investigated and analyzed in relation to the manufacturing parameters using statistical analysis. The results and the correlation coefficients (R2) show that molding pressure and holding time are the most significant effects on porosity and compressibility. They indicate that the hot molding parameters can adequately explain porosity and compressibility.


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