Refractory metal.
نویسندگان
چکیده
منابع مشابه
Approaches to oxidation-resistant refractory metal alloys
The focus of the research reported here was on the design of high-temperature alloys which would form protective Si02 and A1203 scales on exposure to high-temperature, oxidizing environments. One way to promote the growth of such scales is to incorporate sufficient amounts of Si or A1 in the alloy substrate; typically, additions of approximately 35 to 45 weight percent (all alloy compositions a...
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Refractory ceramic fibres (RCF) are used in thermal isolation in the metal industry where high temperatures are regularly employed. Asbestos materials were earlier commonly used for these purposes. In this work, two Finnish steel plants, three foundries and a repair shop were studied for the ceramic fibre exposure of their workers under normal production and during the replacement of oven insul...
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AIM To evaluate the use of fully covered self-expandable metal stents (FCSEMSs) for pancreatic duct strictures in children with chronic pancreatitis. METHODS Eight patients with refractory benign dominant stricture of the main pancreatic duct (MPD) were enrolled through chart reviews between December 2014 and June 2017 in a single center. Endoscopic retrograde cholangiopancreatography (ERCP) ...
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Introduction: Alloys of refractory metals are expected as first condensates from a cooling nebular gas [1]. Complex particles (tenths of μm) containing the most refractory metals Re, Os, W, Ir, Mo, Ru, Pt and Rh in approximately solar abundances were first reported by [1,2]. These opaque assemblages (OA) were found to be affected by exsolution, oxidation and sulfurization, leading to the redist...
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Refractory celiac disease (RCD) is when malabsorption symptoms and villous atrophy persist despite strict adherence to a gluten free diet (GFD) for more than 12 months and other causes of villous atrophy have been ruled out. RCD is considered a rare disease and almost exclusively occurs in adults. Persistent diarrhea, abdominal pain, weight loss are the most common symptoms in RCD. Also, anemi...
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ژورنال
عنوان ژورنال: Bulletin of the Japan Institute of Metals
سال: 1989
ISSN: 0021-4426,1884-5835
DOI: 10.2320/materia1962.28.29