The medical device industry is still seeking answers to the mechanically-assisted corrosion (MAC) problem, which becomes increasingly important due to modularity in design. MAC manifests in various forms, some of which are fretting corrosion, crevice corrosion and stress corrosion. Several studies have been conducted to understand the causes and the factors that affect fretting corrosion. Some ...

BACKGROUND Previous studies regarding modular head-neck taper corrosion were largely based on cobalt chrome (CoCr) alloy femoral heads. Less is known about head-neck taper corrosion with ceramic femoral heads. QUESTIONS/PURPOSES We asked (1) whether ceramic heads resulted in less taper corrosion than CoCr heads; (2) what device and patient factors influence taper fretting corrosion; and (3) w...

tarnish and corrosion behavior of three commercial dental amalgams namely am.1, am.2, am.3, have been investigated by utilizing in vitro tests. the corrosion and/or dissolution rate of the three dental amalgams were studied in 0.9 wt% nacl solution, artificial saliva and ringers solution. potentiodynamic polarization technique was employed to study cathodic and anodic polarization behavior, fro...

background: corrosivity is one of the factors affecting the water quality. not controlling the chemical quality of water in the distribution network causes corrosion, sedimentation and economical and health damages. the aim of this study was to determine the drinking water corrosivity and sediment of kuhdasht, iran by using the corrosivity index. methods: in this study, 12 predetermined areas l...

The purpose of the present study is to analyse restrictions on freedom religious worship introduced by Polish executive authorities in face spreading COVID-19 epidemic. analysis aims answer questions not only concerning conformity these actions with Constitution Republic Poland and statutory laws, but also pertaining issue level preparation law for an In reference questions, author concludes th...

causes many failures in chemical process installations. These failures generate high costs, therefore an effective corrosion monitoring system obtrudes. This paper focuses on the classification of the most important corrosion processes: pitting, stress corrosion cracking (SCC) and general corrosion. The computations and algorithms involved in the classification of the corrosion time series are ...

Corrosion is one of the major reasons for wear and tear of equipments. It is also responsible for reducing the life of equipments. Many accidents occur because of failure of pipelines due to corrosion. There are many methods to minimize corrosion. Cathodic protection, use of inhibitors, use of anticorrosive coatings is few methods used for this purpose. The presence of moisture in the atmospher...

A 2-D model for the corrosion of spent nuclear fuel inside a failed nuclear waste container has been modified to determine the influence of various redox processes occurring within fractures in the fuel. The corrosion process is driven by reaction of the fuel with the dominant α radiolysis product, H2O2. A number of reactions are shown to moderate or suppress the corrosion rate, including H2O2 ...

The withdrawal of effective but toxic corrosion inhibitors has provided an impetus for the discovery of new, benign organic compounds to fill that role. Concurrently, developments in the high-throughput synthesis of organic compounds, the establishment of large libraries of available chemicals, accelerated corrosion inhibition testing technologies, and the increased capability of machine learni...