Use of Ti in hard metal alloys - Part I: structural and microstructural analysis. Titan in Hartmetalllegierung - Teil I: Struktur - und Mikroanalysen

2010 ◽  
Vol 41 (4) ◽  
pp. 198-201
Author(s):  
J. D. Lamim ◽  
H. C. P de Oliveira ◽  
A. C. Batista ◽  
R. S. Guimarães ◽  
M. Filgueira
Keyword(s):  
Microstructural Analysis ◽  
Hard Metal ◽  
Metal Alloys

scholarly journals Analysis and Comparison of the Corrosive Behavior of Nickel-Based and Cobalt-Based Dental Alloys

Materials ◽  
2021 ◽  
Vol 14 (17) ◽  
pp. 4949
Author(s):  
Carmen Marina Garcia-Falcon ◽  
Tomas Gil-Lopez ◽  
Amparo Verdu-Vazquez ◽  
Julia Claudia Mirza-Rosca
Keyword(s):  
Electrochemical Impedance ◽  
Microstructural Analysis ◽  
Dental Materials ◽  
Electrochemical Treatment ◽  
Ringer Solution ◽  
Passive Layer ◽  
Metal Alloys ◽  
Dental Alloys ◽  
Potentiostatic Polarization ◽  
The Stability

Nickel-based and cobalt-based metal alloys are frequently used in dentistry. The introduction of various elements in the alloy changes its characteristics, and a thorough study of each alloy should be completed to determine its appropriate corrosion resistance and biocompatibility in contact with physiological fluids. There are scarce investigations on these widely used dental alloys in Ringer solution, and findings in this research bring new experimental data and information. The present study evaluated and compared the corrosion behavior of six NiCr- and two CoCr-based dental materials in Ringer solution, using the following techniques: potentiostatic polarization curves (chronoamperometry), microstructural analysis, and EIS (electrochemical impedance spectroscopy). The results obtained in this investigation showed that in the NiCr-based specimens Ni4, Ni5, and Ni6 the stability of the passive layer was destroyed after polarization and a development and growth of stable pits was found in the microstructural analysis after electrochemical treatment. In terms of susceptibility to corrosion, two different groups of specimens were derived from this investigation. A first group which included the two CoCr (Co1 and Co2) and three of the six NiCr alloys studied (Ni1, Ni2, and Ni3). A second group with the other NiCr alloys investigated Ni4, Ni5, and Ni6.

Use of Ti in hard metal alloys - Part II: mechanical properties. Titan in Hartmetallen - Teil II: Mechanische Eigenschaften

2010 ◽  
Vol 41 (8) ◽  
pp. 666-669
Author(s):  
J. D. Lamim ◽  
H. C. P de Oliveira ◽  
A. C. Batista ◽  
R. S. Guimarães ◽  
M. Filgueira
Keyword(s):  
Mechanical Properties ◽  
Hard Metal ◽  
Metal Alloys ◽  
Mechanische Eigenschaften

Electrochemical dissolution of hard metal alloys

2007 ◽  
Vol 52 (27) ◽  
pp. 7732-7737 ◽  
Author(s):  
B. Walther ◽  
J. Schilm ◽  
A. Michaelis ◽  
M.M. Lohrengel
Keyword(s):  
Hard Metal ◽  
Metal Alloys ◽  
Electrochemical Dissolution

NOREM 02

Alloy Digest ◽  
1994 ◽  
Vol 43 (12) ◽  
Keyword(s):  
Wear Resistance ◽  
Power Plant ◽  
Nuclear Power Plant ◽  
Nuclear Power ◽  
Hard Metal ◽  
Metal Alloys ◽  
Radiation Fields ◽  
Reduction Program ◽  
Welding Consumable

Abstract NOREM 02 is a welding consumable for use in nuclear power plant systems to be part of the cobalt reduction program by EPRI to control radiation fields. The alloy can be used for hardfacing in valves with good results. This datasheet provides information on composition. It also includes information on wear resistance as well as joining. Filing Code: SS-576. Producer or source: Hard Metal Alloys.

Dissolution of cobalt from hard metal alloys by cutting fluids

1979 ◽  
Vol 5 (3) ◽  
pp. 129-132 ◽  
Author(s):  
Ö. Einarsson ◽  
E. Eriksson ◽  
G. Lindstedt ◽  
J. E. Wahlberg
Keyword(s):  
Hard Metal ◽  
Metal Alloys ◽  
Cutting Fluids
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