What is cobalt-chromium used for?

Cobalt-chrome or cobalt-chromium (CoCr) is a metal alloy of cobalt and chromium. Cobalt-chrome has a very high specific strength and is commonly used in gas turbines, dental implants, and orthopedic implants.

Is cobalt a biomaterial?

Several types of materials have been developed for this purpose. The most common classes of metal materials used as biomedical materials are stainless steel, Cobalt chromium alloy, Titanium and Ti-6Al- 4V.

Why is cobalt-chromium used in implants?

Cobalt-chrome (Co-Cr) is a metal alloy of cobalt and chromium. Because of its high strength, temperature endurance and wear resistance, it is commonly used in dental and orthopedic implants. In orthopedic implants it is usually composed of cobalt with chromium, molybdenum, and traces of other elements.

What is cobalt alloy made of?

The main components of cobalt-chrome alloys are cobalt, chromium, molybdenum, and some nickel. Cobalt alloys are combined with chromium and molybdenum to increase the metal’s corrosion resistance.

Is cobalt-chromium biocompatible?

Cobalt-chromium alloys Cobalt-chromium (Co-Cr) alloys have high specific strength and are hard, tough, corrosion resistant, biocompatible metals. Besides titanium, cobalt chrome is one of the most widely used metals in knee implants.

What is the significance of cobalt?

It is an important source of gamma-rays. It is widely used in cancer treatment, as a tracer and for radiotherapy. Cobalt is found in the minerals cobaltite, skutterudite and erythrite. Important ore deposits are found in DR Congo, Canada, Australia, Zambia and Brazil.

What is the biological role of cobalt?

Cobalt is an integral part of vitamin B12 and therefore essential for the function of cells. It is also involved in the production of red blood cells and the production of antibacterial and antiviral compounds that prevent infections.

Why is cobalt-chromium?

Cobalt-chromium (Co-Cr) alloys have high specific strength and are hard, tough, corrosion resistant, biocompatible metals. Besides titanium, cobalt chrome is one of the most widely used metals in knee implants.

Why is cobalt-chromium used in stents?

In comparison with stainless steel stent, cobalt chromium stent has a higher radial strength and radio-opacity for similar electronegativity, this allow for the production of thinner struts with a similar radiological visibility.

Why is cobalt used in alloys?

Cobalt alloys have good magnetic properties, corrosion resistance, wear resistance, and high temperature strength. These properties arise from the crystallographic nature of cobalt, the solid-solution-strengthening effects of Cr, W, and Mo, the formation of metal carbides, and the corrosion resistance imparted by Cr.

Is cobalt used in surgeries?

Today, the use of Co alloys for surgical applications is mainly related to orthopaedic prostheses for the knee, shoulder and hip as well as to fracture fixation devices.

What is cobalt in biology?

Cobalt is the active center of a group of coenzymes called cobalamins. Vitamin B12, the best-known example of the type, is an essential vitamin for all animals. Cobalt in inorganic form is also a micronutrient for bacteria, algae, and fungi.

How is cobalt used in the medical field?

Cobalt-60 is widely used as a medical and industrial source of radiation. Medical use consists primarily of cancer radiotherapy. Industrial uses include testing welds and castings and a large variety of measurement and test instruments, such as leveling devices and thickness gauges.

What is the benefit of cobalt?

Cobalt plays a key role in various bodily functions, combined with vitamin B12 it promotes the healthy functioning of the nervous system and involved in the metabolism of carbohydrates and fats. It is actively involved in the production of haemoglobin and healthy red blood cells.

How are cobalt alloys made?

Cobalt-Based alloys are materials whose cobalt-basis is alloyed with elements such as chromium, tungsten, nickel and iron. Along with nickel-based alloys, they are used in challenging environments including high temperatures and acids.

What metal is used in cardiac stents?

Traditional coronary stent materials include stainless steel (316L), cobalt‑chromium alloys, nickel‑titanium alloy (Nitinol), platinum, and tantalum alloys. However, several problems are associated with bare metal stents viz.

What material are stents made from?

Most are made of a metal or plastic mesh-like material. However, stent grafts are made of fabric. They are used in larger arteries. A coronary artery stent is a small, self-expanding, metal mesh tube.

Is cobalt chromium biocompatible?

What does cobalt do to your body?

What is cobalt chromium alloy?

About Cobalt Chromium Alloy. Cobalt Chromium is one of numerous metal alloys sold by American Elements under the trade name AE Alloys™. Generally immediately available in most volumes, AE Alloys™ are available as bar, ingot, ribbon, wire, shot, sheet, and foil. Ultra high purity and high purity forms also include metal powder,…

What is the microstructure of cobalt-based alloy?

The microstructure of cobalt-based alloys possesses a cobalt-rich solid-solution medium having carbides (Cr 7 C 3, and M 23 C 6) in which W, Cr, Ta, Ni, Zr, Si, and Co may be found in a single carbide particle [87].

What is the history of cobalt alloys?

Cobalt (Co) alloys have been in use since 1907 when Elwood Haynes obtained the first patents on cobalt–chromium compositions. Historically, many of the commercial cobalt-base alloys are derived from the cobalt–chromium–tungsten and cobalt–chromium–molybdenum ternaries.

What is cobalt chrome used for in implants?

Cobalt-chrome. Cobalt-chrome or cobalt-chromium ( CoCr) is a metal alloy of cobalt and chromium. Cobalt-chrome has a very high specific strength and is commonly used in gas turbines, dental implants, and orthopedic implants.