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Among the most important challenges of modern material engineering is to repair ill or damaged organs of the human body. Ceramic materials have various superior characteristics in mechanical properties, heat resistance and chemical stability. Therefore, ceramics have been considered as the candidate for biomaterials used for tooth root and artificial bone. Among the ceramics, alumina is being widely used as hard tissue replacement. Despite having the assets for its effective use as hard tissue implant materials, it has some major drawbacks. Though alumina is inert, but it is corrodible in...

Scientific Study from the year 2009 in the subject Physics - Nuclear Physics, Molecular Physics, Solid State Physics, grade: A, language: English, abstract: Investigations were carried out on etching behaviour of an engineering polymer Kapton-H (4-4'-oxydiphenylene pyromellitimide). Kapton-H samples were subjected to etching in 4N NaOH at 400 C and at 500 C temperatures in pristine as well as irradiated form. Irradiation of pristine Kapton-H specimen was done using 75 MeV/nucleon O+ ion beam of fluence 1.875 x a trillion ions/cm2. The specimen was exposed to etchant for a period of 150...