omerelsheikh

omerelsheikh

مدرس - عضو هيئة تدريس

كلية العلوم

العنوان: Sohag

2

إعجاب
4 0 0 3 2 0 321 54
59

أضيف حديثا
  • المقررات الدراسية 4
  • ملحقات المقررات الدراسية 0
  • واجبات المقررات الدراسية 0
  • المنشورات و المؤلفات 3
  • ساعات مكتبية 2
  • الاعلانات 0
  • عدد الملفات المرفوعه 0
  • كل التنزيلات 0

المنشورات و المؤلفات التي تحتوي علي الكلمة المفتاحية: Microstructure

Microstructural and morphological characterisation of ancient bronze coins from the archaeological site of Al-Fustat city in Egypt

2018-10-22 19:54:07 الكلمات المفتاحية morphological characterisation, Microstructure, bronze coins, Corrosion,
Microstructural and morphological characterisation of ancient bronze coins from the archaeological site of Al-Fustat city in Egypt
This paper deals with the microstructural and morphological characterization of some ancient bronze coins excavated in the Al-Fustat archaeological site. Al-Fustat is the first capital of Egypt in the Islamic civilization. It was built by Amr Ibn Al-As in the year 641 AD on the east bank of the Nile and replacing ancient Memphis to the west. In the ancient ... إقراء المزيد

Duplex treatment of 304 AISI stainless steel using rf plasma nitriding and carbonitriding

2018-09-26 12:09:21 الكلمات المفتاحية Surface morphology, Microstructure, Surface hardness, Glow discharge optical spectro, Carbonitriding, Duplex treatment,
Duplex treatment of 304 AISI stainless steel using rf plasma nitriding and carbonitriding
Surface of 304 AISI austenitic stainless steel has been modified using duplex treatment technique of nitriding and carbonitriding. A thick modified nitrided layer, of approximately 20 μm, has been achieved when rf inductively coupled plasma was adjusted at 450 W for processing time of only 10 min. After performing the nitrided layer, the nitrided samples were carbonitrided using the same ... إقراء المزيد

Duplex treatment of AISI 304 austenitic stainless steel using rf nitriding and dc reactive magnetron sputtering of titanium

2018-09-26 12:14:25 الكلمات المفتاحية Duplex treatment, Titanium nitride, Glow discharge optical spectro, Microstructure, Surface hardness,
Duplex treatment of AISI 304 austenitic stainless steel using rf nitriding and dc reactive magnetron sputtering of titanium
In this work, duplex treatment has been carried out using radio frequency (rf) plasma nitriding process and direct current (dc) magnetron sputtering of titanium. Nitriding of AISI 304 stainless steel, using rf plasma technique, created a thick modified layer of approximately 20 μm for short plasma processing time of 10 min. After nitriding process, a thin titanium nitride film has ... إقراء المزيد

Sb-doping effects on optical and electrical parameters of SnO2 films

2018-09-27 11:43:45 الكلمات المفتاحية Sb–Sn–O films, Microstructure,
Sb-doping effects on optical and electrical parameters of SnO2 films
Undoped and Sb-doped SnO2 films ∼100 nm thick have been deposited by electron beam evaporation from bulk samples prepared using sintering technique. Either undoped or Sb-doped SnO2 films are nearly amorphous, resistive and transparent. With increasing Sb content, the resistivity slightly decreases and then increases with further addition of Sb, which acts as donor and/or acceptor impurity atom in the ... إقراء المزيد

  • «
  • 1
  • »