Ditemukan 6 dokumen yang sesuai dengan query
Reza Fadhila, author
The kinetics of isothermal phase transformation in tempered embrittlement stainless stell zeron-25 (SAF-2507): The kinetics study of phase transformation in stainless steel SAF 2507 heat-treated at 800,850 and 900 oC have been done.Eitheir observation of microstructure for treated materials by an optical or electron microscope confirmed the formation of carbide...
2002
SAIN-7-2-2002-61
Artikel Jurnal Universitas Indonesia Library
Siagian, Pontas, author
Telah dilakukan pengamatan transformasi fasa pada sistem besi-karbon (Fe-C) melalui pengamatan penganalisa perubah panas (Differential Thermal Analyzer, DTA). Sampel Fe-C dipersiapkan dengan metode metalurgi serbuk menggunakan serbuk besi dan karbon murni (> 99 %), meliputi komposisi nominal paduan karbon rendah (0,1 wt.%), hypoeutectoid (0,4 wt.%), dan eutectoid (0,8 wt.%). Hasil...
Depok: Lembaga Penelitian Universitas Indonesia, 2002
AJ-Pdf
Artikel Jurnal Universitas Indonesia Library
Nelson Saksono, author
Hard water causes the CaCO3 scale formation on the pipe walls and heat exchanger equipments in industrial or domestic water processes. A great number of experimental researches on the prevention of the CaCO3 precipitation process by magnetic field have been carried out. In this research, Na2CO3 and CaCl2 solutions was...
Depok: Fakultas Teknik Universitas Indonesia, 2011
AJ-Pdf
Artikel Jurnal Universitas Indonesia Library
Erlina Yustanti, author
Barium strontium titanate (BST) or Ba1-xSrxTiO3 with x=0-1 possesses superior dielectric properties, which are widely used in many applications like in communication technology, electronic instrumentations, and various electrical devices. In this paper, the characterization of the particle and crystallite size of Ba1-xSrxTiO3 (x: 0; 0.3; 0.7) is described. A two-step...
2016
AJ-Pdf
Artikel Jurnal Universitas Indonesia Library
Nelson Saksono, author
Magnetic field effect on CaCO3 precipitation is the key parameter in evaluating the effectiveness of Anti-scale Magnetic Treatment (AMT). The purpose of this study was to investigate magnetic fields influence on CaCO3 precipitation in high and low super-saturated CaCO3 solution by varied pH CaCO3 solution using circulation flow fluid system....
Depok: Fakultas Teknik Universitas Indonesia, 2009
AJ-Pdf
Artikel Jurnal Universitas Indonesia Library
Nelson Saksono, author
Magnetisasi air sadah yang bertujuan menurunkan kesadahan air merupakan proses fisik guna mencegah terbentuknya kerak (CaCO3) pada sistem perpipaan. Campuran larutan Na2CO3 dan CaCl2 digunakan sebagai model air sadah sintetik guna mengamati pengaruh medan magnet terhadap pembentukan partikel CaCO3 dalam air sadah. Variabel proses meliputi waktu magnetisasi, kuat medan, dan...
Depok: Lembaga Penelitian Universitas Indonesia, 2006
AJ-Pdf
Artikel Jurnal Universitas Indonesia Library
