Engis Corporation
Vice President Operations - Hyprez Products
Saint-Gobain Jul 1995 - Jun 2001
Director of R and D
Dacia Diamond Factory Bucharest Romania Aug 1974 - Dec 1993
Director of R and D - Hpht Synthesis of Superhard Materials
Aug 1974 - Dec 1993
Vice President Operations
Education:
Universitatea „Babeș - Bolyai” Din Cluj - Napoca 1981 - 1991
Doctorates, Doctor of Philosophy, Philosophy
Universitatea „Alexandru Ioan Cuza” Din Iași 1968 - 1973
Bachelors, Physics
Skills:
Manufacturing R&D Product Development Cross Functional Team Leadership Engineering Marketing Product Management Engineering Management Medical Devices Hpht Diamond Synthesis Micron Diamond and Cbn Manufacturing
Languages:
English Romanian
Us Patents
Apparatus For Measuring The Crushing Strength Of Micron Superabrasives
Ion Benea - Wheeling IL, US Stephen Griffin - Elk Grove Village IL, US Ralph Doyle - Palatine IL, US
International Classification:
G01N 3/08
US Classification:
073824000
Abstract:
A method and apparatus are provided for measuring the crushing strength of an abrasive, comprising particles, used in a lapping process. Embodiments include a crushing strength tester having a cup for holding the abrasive; a first motor for rotating the cup in a first direction; a piston having a face for rotatably fitting within the cup and contacting the abrasive; a second motor for rotating the piston in a second direction opposite the first direction; and a press for pressing the piston against the abrasive and crushing the particles while the first and second motors are rotating. An initial particle size distribution for the particles is determined, then the abrasive is subjected to a crushing force approximately equal to that of the lapping process using the crushing strength tester. A post-crushing particle size distribution for the particles is determined, and the initial and post-crushing particle size distributions are compared.
Surface Etched Diamond Particles And Method For Etching The Surface Of Diamond Particles
Ion C. Benea - Wheeling IL, US Benjamin Rosczyk - Elk Grove Village IL, US Laura Fitzgerald - Palatine IL, US
International Classification:
C09K 3/14
US Classification:
51307, 428402
Abstract:
A method is provided of etching a diamond particle including the step of heating the particle at a temperature of about 700 C. or greater in the presence of water vapor to form an etched particle. Also provided is an etched particle having a core and a surface. The core is formed of sp3 hybridized carbon atoms covalently bonded together, and the surface has substantially no chlorine atoms, oxygen atoms or oxygen species.
Fixed Abrasive Three-Dimensional Lapping And Polishing Plate And Methods Of Making And Using The Same
- Wheeling IL, US Benjamin R. ROSCZYK - Evanston IL, US Ion C. BENEA - Prospect Heights IL, US
International Classification:
B24D 3/28 B24D 3/34 B24B 7/24 B24B 37/04
Abstract:
A fixed abrasive three-dimensional plate includes micron size diamond beads or a mixture of abrasive particles and metal oxide beads, ranging in size from a few microns to a few tens of microns, incorporated into a matrix of one or more inorganic binders and fillers. The composition is formed into a rigid plate blank, and the abrasive plate is mounted on a substrate forming a lapping/polishing plate. The abrasive plate is capable of delivering high material removal rates coupled with reduced surface roughness when lapping/polishing advanced materials, including sapphire, titanium carbide reinforced alumina, silicon carbide, gallium nitride, aluminum nitride, zinc selenide, and other compound semiconductor materials, as well as, glass, ceramic, metallic, and composite workpieces. The diamond beads incorporated in the fixed abrasive three-dimensional plate include diamond particles ranging in size from a few nanometers to a few tens of microns, bonded with one or more inorganic binders and additives.