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Barnes and Noble

Wear Resistant Press Dies for the Production of Diamond Composites

Current price: $49.95
Wear Resistant Press Dies for the Production of Diamond Composites
Wear Resistant Press Dies for the Production of Diamond Composites

Barnes and Noble

Wear Resistant Press Dies for the Production of Diamond Composites

Current price: $49.95
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In the powder metallurgical process, diamond material composites are produced by pressing and sintering of a mixture consisting of diamonds and a metal powder like cobalt. Due to the hardness of diamonds, the surface of press die is easily damaged. To increase the life time of press dies, thin layers, deposited by PVD, have been employed. First, the standard tests, such as scratch test and pin-on-disc, were performed in order to characterize the adhesion and the tribology of the coatings. The results of standard tests were evaluated by 3D surface analyzer, SEM, and light microscope. Afterwards, PVD thin layers were deposited on the inner surface of the dies in order to analyze and compare their behavior during the compaction process. The results evidenced remarkable effect of thin PVD coatings on enhancing wear resistance of the press dies.

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Barnes & Noble does business -- big business -- by the book. As the #1 bookseller in the US, it operates about 720 Barnes & Noble superstores (selling books, music, movies, and gifts) throughout all 50 US states and Washington, DC. The stores are typically 10,000 to 60,000 sq. ft. and stock between 60,000 and 200,000 book titles. Many of its locations contain Starbucks cafes, as well as music departments that carry more than 30,000 titles.

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