Results 241 to 250 of about 22,719 (295)

Cemented Carbides

1989
Abstract This article discusses the manufacturing steps and compositions of cemented carbides, as well as their microstructure, classifications, applications, and physical and mechanical properties. It provides information on new tool geometries, tailored substrates, and the application of thin and hard coatings to cemented carbides by ...
A.T. Santhanam, P. Tierney
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Carbide grain growth in cemented carbides

Acta Materialia, 2011
Abnormal grain growth is often observed in cemented carbides during sintering, but cannot be understood in terms of the classical LSW theory.
Karin Mannesson, Johan Jeppsson, Annika Borgenstam, John Ågren   +3 more
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Porosity in Cemented Carbide

Powder Metallurgy, 1977
This paper surveys the influence and causes of pores in cemented carbide and describes methods used for its description and measurement. Porosity scales, counting and measuring methods, radiography, and ultrasonic inspection are described and discussed.
S. Amberg, H. Doxner
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Microstructures of cemented carbides

Materials & Design, 2001
Abstract An overview is given of the detailed microstructure of cemented carbides of types WC–Co and WC–MC–Co and of titanium carbo-nitride based cemented carbides (cermets). The manufacturing process is first descibed, and the changes in composition that occur during manufacturing are discussed.
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Cemented Carbide Quality Control

2015
Abstract Quality control of cemented carbides includes the evaluation of physical and chemical properties of constituent raw material powders, powder blends/formulations, green compacts, and fully dense finished product. This article provides a summary of the underlying principles and size ranges for the American Society for Testing and ...
Gary Runyon, Binky Sargent
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Reinforcement of tungsten carbide grains by nanoprecipitates in cemented carbides

Nanotechnology, 2016
In contrast to the conventional method that obtains a high fracture strength of tungsten carbide-cobalt (WC-Co) cemented carbides by reducing WC grain size to near-nano or nanoscale, a new approach has been developed to achieve ultrahigh fracture strength by strengthening the WC grains through precipitate reinforcement.
Xingwei, Liu, Xiaoyan, Song, Haibin, Wang, Chao, Hou, Xuemei, Liu, Xilong, Wang   +5 more
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Cemented Carbide Secondary Operations

2015
Abstract This article describes the secondary operations for cemented carbide parts, namely, diamond grinding, honing, electrical discharge machining, and brazing after sintering to achieve desired results, such as specified size, shape, edge condition, and surface finish.
Thomas R. Shearer, Pankaj K. Mehrotra
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Cemented Carbides and Cermets

1998
AbstractCemented carbides belong to a class of hard, wear-resistant, refractory materials in which the hard carbide particles are bound together, or cemented, by a ductile metal binder. Cermet refers to a composite of a ceramic material with a metallic binder.
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Dust in the Cemented Carbide Industry

American Industrial Hygiene Association Journal, 1971
The paper reports on the air concentrations of cobalt at typical operations in the cemented carbide (hard metal) industry. Such samples were obtained in seven different plants.
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Analysis of Microgram Tungsten Carbide-Cobalt Cemented Carbides

Proceedings, annual meeting, Electron Microscopy Society of America, 1976
When small quantities of a grain growth inhibitor are added to starting powders containing submicron WC and Co, the sintered product is a high strength, high hardness alloy. The microstructure of the carbide is quite similar to that of the macrograin variety.
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