Abstract The present investigation aims to coat the layer with Nickel (Ni) and Copper (Cu)over the surface of strenx 900 steel using semi sintered Cu-10Ni-Crx electrodes(x = 2, 4 & 6 wt. %). Three different proportions of semi sintered electrodes such as, Cu-10Ni-2 weight percentage of Chromium (Cr), Cu-10Ni-4 wt. % Cr,and Cu-10Ni-6 wt. % Cr were prepared by powder metallurgy route. Electric discharge alloying was completed based on L9 orthogonal array and alloyed parameters were optimized using Taguchi method. The alloyed surfaces were characterized using scanning electron microscope and atomic force microscopy. The deposition of formation of intermetallic was studied using X- ray diffractometer. Higher Material Transfer Rate (MTR) was obtained at 9A, 350A and 6% chromium using Cu-10 Ni-Cu electrode. The chromium percentage was the foremost factor on Surface Roughness (SR) (73.71%) and MTR(96.56%). From Taguchi approach, the minimum SR was attained at percentage of chromium of 2%, compaction pressure of 250 Megapascal (MPa) and peak current of 9A. The maximum MTR was achieved at 6 percentage of Cr, compaction pressure of 350 MPa and peak current of 3A. Wear loss for Cu-10 Ni-Cr increases linearly with increase in sliding speed from 2m/s to 4m/s respectively.

Chronic Suppurative Osteomyelitis of the maxilla is a relatively uncommon lesion with scarce information in the medical literature regarding its clinical/pathological status and treatment perspectives. We report a rare clinical case of a patient presenting with osteomyelitis of the maxilla with pus discharge. The review discusses the pathogenesis, clinical course, investigative procedures and treatment. The diagnosis in this patient was based on data assessed from a specialized imaging technique and from the histopathological findings. Timely medical and surgical therapy reduced the morbidity which may otherwise have occurred due to the significant complications associated with this chronic lesion. This interventional approach can thus be recommended as one of the novel treatments for osteomyelitis of the jaws with the prospect of significant clinical and radiological improvement, as was shown in the present case.