The aim of this study is to investigate the impact mechanical recycling on physical and properties recycled polyamide 6 (PA6) 66 (PA66) in relation their microstructures. Both PA6 PA66 raw materials were reprocessed six times, changes investigated as a function number. Until sixth round recycling, slight detected, except for percentage elongation. For properties, change both flexural strength Young's modulus followed decreasing trend, while trend terms elongation showed an increase....

The cladding process is a cost-effective solution to improve surface properties and obtain additional functionalities. current paper focuses on the of austenitic 304L stainless steel aluminum substrate (SS/Al) by diffusion bonding, particularly relevant in kitchenware field for safety issues. study investigates bonding characteristics deep drawing formability clad material, aiming understanding its performance. main results show defect-free interface, as observed through microstructural...

Thermal spray techniques allow coatings to be deposited from a wide range of materials with controlled thicknesses, micrometres millimetres. For this reason, thermal spraying can optimize performance for diverse applications across industries, ensuring strong adhesion and the durability coated surfaces. In work, composite ethylene chlorotrifluoroethylene/ceramic (ECTFE/Al2O3) different ceramic ratios were by plasma spraying. Four produced blended powders consisting pure ECTFE 5%, 10%, 15...

In this article, we studied and explored the impact of viscoelasticity on friction wear behavior pure polytetrafluoroethylene (PTFE), carbon–graphite PTFE composite, glass fiber–MoS2 composite. Tests were carried out using a specific reciprocating tribometer for valve seal application. The worn surfaces composites transfer films formed counterface examined with scanning electron microscope (SEM). Experimental results revealed that addition filler materials was effective in reducing volume...

This article describes and explains the tribological tests methods for evaluation of performance brake friction materials. It starts by discussing particularities these materials variation characterization tests, which can experimentally simulate many aspects situation but with a large field tribo-test, from standard to specific protocol. Examples preparation, procedures, instrumentation, analysis results aspect testing ranging scale vehicle braking (by including inertia dynamometers, Krauss...

Hexagonal wurtzite phased ZnO:Er3+/Yb3+ thin films with various Yb concentrations were deposited on Si(111) substrate by Aerosol Assisted Chemical Vapor Deposition process. Post-annealed at 1000 °C in air atmosphere showed a crystallinity enhancement. Yb3+ (4F7/2 → 4F5/2) nm emission increased the increase of concentration emanating from an Er-Yb energy transfer. The reflectance percentage 12% was achieved [250–1000 nm] range, and refractive index 1.97 obtained for 632 wavelength. These...

Abstract The current article describes static and frictional contact tests carried out with spherical indenter on both human skin surface elastomeric materials. This tribological study is performed to analyze the elasticity tactile properties of skin, therefore evaluate reliability behavior simulation through considered Finite element analyses indentation are proposed. Critical normal load was found when numerical experimental results were confronted. Such critical force defines limit...

Due to its popularity in the industry, brass is an important material model as it can lead time and cost savings. The hot deformation behaviour of CuZn40Pb2 was performed using Hansel Spittel constitutive model. Hot compression tests were carried out at temperatures ranging from 550°C 750°C with strain rates 0.1/s, 1/s 10/s a thermomechanical simulator Gleeble. results show that temperature rate have significant impact on flow stress. friction between specimen anvils, well effect increasing...

Industrial brake lining materials are composite with complex formulations consisting of multiple constituents. Resulting from the fabrication process, morphology and distribution constituents have significant influences on future properties braking performance. In this study, an in-depth analysis ranging microscale to macroscale was performed assess relationships between microstructure, mechanical performance industrial material formulated for heavy vehicles. It observed that manufacturing...

A ZnO:Er,Yb hexagonal wurtzite phase structured thin film with highly efficient NIR to visible upconversion emissions.

The empirical models for estimating the mechanical properties and morphological of recycled low density polyethylene/snail shell bio-composites was investigated. snail particle sizes 75, 125, 250 500 μm with a weight percentage 0, 5, 10 15 (wt%) polyethylene (RLDPE) were prepared by compounding compressive moulding technique. Samples cut from panel subjected to testing such as tensile, flexural impact energy. Scanning electron microscope used analyse fracture surface samples. Linear...

AbstractThe manufacturing process of organic friction material used for braking applications is importance with regard to their properties and performance. This article deals a manufactured according two different hot molding conditions. An original analysis polymerization the phenolic resin matrix led choice temperature duration process. Two materials were developed, changing these dependent parameters, wear behaviors investigated various thermal severities sliding The conductivity was also...