The Vapor-Phase Deposition of Refractory Materials

Campbell, I. E.; Powell, C. F.; Nowicki, D. H.; Gonser, Bruce W.

doi:10.1149/1.2776795

Cited by 117 publications

(22 citation statements)

References 1 publication

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“…They are used for round tools (drills, threaders, reamers, routers), tools for the electronic industries (micro tools), as wear parts, chipless forming tools, circular shearing tools, wood machining tools, for can tooling and more recently, also in the form of a variety of coated and uncoated metal cutting inserts of complex geometries" [17]. [18] and to Campbell, Pavell, Novitzki and Gonser (1948) [19]. Several further papers and patents followed.…”

Section: Fine Grained Hardmetalsmentioning

confidence: 99%

The history of the technological progress of hardmetals

Ortner¹,

Ettmayer²,

Kolaska

2014

International Journal of Refractory Metals and Hard Materials

128

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The impressive history of hardmetals starts with the Schröter Patent and is then followed by the first hardmetal company, Krupp-WIDIA. Metallwerk Plansee has also played an important part in the search of drawing dies for tungsten wires and later as one of the important hardmetal manufacturers besides Kennametal in USA, Sandvik in Sweden and others. The further development of hardmetals is characterized by other carbide and binder combinations. TiC-based hardmetals are a great step forward for the machining of steels and so are fine grained hardmetals for a wide spectrum of applications. With the rising tendency of automation in metal cutting, indexable inserts with quite complex geometries were developed for the application in lathes and milling centers working with computer numerical control (CNC). Coating technologies by chemical vapor deposition and physical vapor deposition have greatly increased the wear resistance of hardmetals. Coating with aluminum oxide multilayers and with diamond were devised as well as compact non metallic hard materials such as diamond, cubic boron nitride, oxide and nitride ceramics as well as mixed ceramics. Cermets and their special properties are discussed as well as ultrahard ceramics for special applications. Finally a short survey of the literature on hardmetals and hard materials is given.

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Section: Fine Grained Hardmetalsmentioning

confidence: 99%

The history of the technological progress of hardmetals

Ortner¹,

Ettmayer²,

Kolaska

2014

International Journal of Refractory Metals and Hard Materials

128

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“…1a. The voltammogram is similar to that for the NaCl-KCl melt because MoO 4 2-particles have a more negative potential compared with that of Na + and K + cations, i.e., are electrochemically inactive in the presence of sodium and potassium chlorides (7). The voltammetric curve has only two characteristic sections, corresponding to discharges of sodium and potassium cations and dissolution of the molybdenum electrode.…”

Section: Electrode Processes Accompanying Electrodeposition Of Molybdmentioning

confidence: 74%

“…[4] The electrode process resulting in the joint electroreduction of CO 3 2-and MoO 4 2-ions with the formation of Mo 2 C (wave R 3 ) can be in general represented by the reaction 2 MoO 4 2-+ CO 3 2-+ 16e -→ Mo 2 C + 11O 2-. [5] Note that the discharge of MoO 4 2-particles becomes possible due to lithium ions in the melt, which shift the potential of the discharge of molybdate ions toward positive potential values.…”

Section: Electrode Processes Accompanying Electrodeposition Of Molybdmentioning

confidence: 99%

Molten Salts as a Promising Medium for the Synthesis of Highly Active Catalytic Coatings

Dubrovskiy

Kuznetsov

2013

ECS Trans.

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The joint electroreduction of CO 3 2-and MoO 4 2-ions on a molybdenum cathode in a NaCl-KCl-Li 2 CO 3 -Na 2 MoO 4 melt was studied by cyclic voltammetry. The electrochemical synthesis of Mo 2 C on molybdenum and graphite substrates has been performed. In all cases Mo 2 C coatings with the hexagonal lattice were obtained. The molybdenum carbide coatings on a molybdenum substrate (Mo 2 C/Mo) show catalytic activity in the water gas shift (WGS) reaction at least three orders of magnitude higher than that of the bulk Mo 2 C phase. It was found that the H 2 S does not affect on the activity, stability, and selectivity of the catalyst.

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“…PVD çeşitli refrakter malzemeleri ergime sıcaklıklarının altındaki sıcaklıklarda kaplama olarak kullanmaya izin veren bir yöntemdir. Bu teknik ile süreye bağlı olmak üzere, kalınlığı bir mikronla birkaç milimetre arasında değişen kaplamalar yapmak mümkündür [40].…”

Section: Pvd Yöntemi (Pvd Method)unclassified

Üstün Özelli̇klere Sahi̇p İleri̇ Teknoloji̇ Serami̇ği̇: Ti̇tanyum Di̇borür

Akkurt¹

2019

Journal of Boron

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Humanity has been communed with nature since the beginning of its existence and has invented various instruments by imitating the nature. The most effective factor in the development of these inventions was material science. The importance of the material science has increased with the developing technologies in recent years, and it has become mandatory to find new materials. Ceramic materials have always been of great importance for human. Advanced technology ceramics are used in many commercial applications due to their long life, high performance, superior properties and cost-effectiveness. Titanium diboride (TiB 2 ) with its hardness, high melting point, excellent abrasion and corrosion resistance has a very important place among advanced technology ceramics. There are a wide range of applications such as the production of wear-resistant parts, aluminum electrolysis, protective film layers, military applications (armor), etc. In this article, the physical and chemical properties, production methods, usage areas and the studies carried out in recent years of titanium diboride (TiB 2 ), which has a very important place among the advanced technology ceramics, are briefly presented.

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The Vapor-Phase Deposition of Refractory Materials

Cited by 117 publications

References 1 publication

The history of the technological progress of hardmetals

The history of the technological progress of hardmetals

Molten Salts as a Promising Medium for the Synthesis of Highly Active Catalytic Coatings

Üstün Özelli̇klere Sahi̇p İleri̇ Teknoloji̇ Serami̇ği̇: Ti̇tanyum Di̇borür

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