One of the common issues that arises in abrasive machining is the inconsistency of the surface roughness within the same batch and under identical machining conditions. Recent advances in engineered abrasives have allowed replacement of the random arrangement of minerals on conventional belts with precisely shaped structures uniformly cast directly onto a backing material. This allows for abras...

Inhalation of silica dust is associated with pulmonary fibrosis. Therefore, substitute abrasive materials have been suggested for use in abrasive blasting operations. To date, toxicological evaluation of most substitute abrasives has been incomplete. Therefore, the objective of this study was to compare the pulmonary toxicity of a set of substitute abrasives (garnet, staurolite, coal slag, spec...

Peri-implantitis is characterized by inflammation and crestal bone loss in the tissues surrounding implants. Contamination by deleterious bacteria in the peri-implant microenvironment is believed to be a major factor in the etiology of peri-implantitis. Prior to any therapeutic regenerative treatment, adequate decontamination of the peri-implant microenvironment must occur. Herein we present a ...

The dentifrices currently available in the marketplace contain many anticariogenic substances, fluoride and abrasives aimed to better clean the dental surface, remove dental plaque, improve salivary flow and its buffer capacity and reduce colonies of bacteria such as S. mutans, the causative agent of dental caries. The objective of this study was to evaluate the possibility of adequately removi...

Results from experiments on the removal of copper using chemical mechanical polishing ~CMP! by alumina abrasives suspended in deionized water are reported. The experiments were carried out in a benchtop polishing tool using IC1000 perforated pads and SUBA 500 pads. The removal rate was measured over a good range of values of the relative velocity and pressure, and for different values of the ab...

The use of dissimilar materials is increasing exponentially in the automotive industry due to possibility achieving weight reduction from multi-material design. Friction Element Welding (FEW) an advanced solid-state joining technique employed for using a friction element. processing time FEW relatively higher than few its competitive techniques, with cleaning step contributing majority time. cu...

Slurry is widely used in polishing difficult-to-machine materials. However, it accompanied with some issues, such as the agglomeration of abrasives and high disposal cost. Although using fixed abrasive grains instead slurry can solve these problems wear loading grinding stones, which result decrease material removal rate (MRR), also need to be solved. Many researches have been conducted on self...

The chemical mechanical polishing (CMP) technology has been widely used for surface modification of critical materials and components with high quality efficiency. In a typical CMP process, the properties abrasives play vital role in obtaining ultra-precision damage-free wafers improvement their performances. this work, series fine structured rod-shaped silica (RmSiO2)-based controllable sizes ...

Surface finishing operation is a very vital aspect of the manufacturing process and would not fully be achieved without abrasives such as emery paper. Some materials used in production like alumina (Al2O3), Boron Carbide (B4C) are expensive thereby limiting their usage. This work aimed at producing abrasive from snail shells, silica (SiO2), epoxy resin while melamine formaldehyde acts hardener....

Recently, a comprehensive model has been developed by Luo and Dornfeld (“Material removal mechanism in chemical mechanical polishing: theory and modeling,” IEEE Trans. Semiconduct. Manufact., vol. 14, pp. 112–133, May 2001) to explain the material removal mechanism in chemical mechanical planarization (CMP). Based on the model, the abrasive size distribution influences the material removal from...