A single NEXPLANON implant is inserted subdermally in the upper arm. To reduce the risk of neural or vascular injury, the implant should be inserted at the inner side of the non-dominant upper arm about 8-10 cm (3-4 inches) above the medial epicondyle of the humerus.
Graphitic corrosion is selective leaching of iron from gray cast iron, where iron particles are removed and graphite grains remain intact. Graphitic corrosion is also known as selective leaching, dealloying, demetalification, parting and selective corrosion.
Corrosionpedia explains Carbide. A carbide is a compound composed of carbon and a less electronegative element, usually a metal or a metal oxide. Carbide usually refers to calcium carbide, or sometimes tungsten carbide when the term is used by itself.