Diamante A&T Contents
Issue 108

Year XXVIII - June 2022

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Front Cover: POLIGEM SRL
Via Ernesto Rizzi 13/p, 20077 Melegnano (MI) - Italy

Poligem is a private independent company that has been a leader in the superabrasive market since 1996. Thanks to the experience accumulated in the synthesis, selection and grinding of the diamond, Poligem has been for years a constant presence in Europe in the tools, abrasives and non-conventional diamond applications sectors. From natural diamond to synthetic diamond, from polycrystalline diamond to Cubic Boron Nitride, Poligem is able to respond with the best solution to the needs of the industry.

www.poligem.it




Abstract Forum Universo Diamante
39░ AIM National Congress
Padua, 21 September 2022

14) When you say "Diamond". A warm welcome and good work to all!
by O. Cai - Diamond tools consultant

15) Saw grit diamond sizes, linearisation & effects on stone cutting
by James D. Dwan - Trinity College Dublin, Dublin, Ireland

16) Graphite from industrial waste streams
by Seppo Leinonen, Thair Al-Ani - Geological Survey of Finland, Kuopio, Finland

17) Development and characterization of a corrosion resistant metal matrix for the production of diamond tools
by I. Lorenzon - Pometon

18) Powder materials manufactured by industrial mechanical alloyings
by Alberto Colella, Paolo Matteazzi - MBN Nanomaterialia SpA, Vascon Di Carbonera (TV)

20) The training of diamond mining technicians in Angola: the role of Italian academic cooperation
di R. Bruno1, G. Raspa2
1 Dipartimento di Ingegneria Civile, Chimica, Ambientale e dei Materiali, UniversitÓ di Bologna
2 Dipartimento Ingegneria Chimica, Materiali Ambiente, UniversitÓ La Sapienza di Roma

21) Performance improvement of PDC and PDC bits by cryogenic treatment
by Jianbo Tu, Xueqi Wang, Wenhao Dai, Baochang Liu - College of Construction Engineering, Jilin University, Changchun, China

22) Influence of cryogenic treatments on metal bonds for diamond tools
by M. Franco, E. Carlet, D. Zandonella Necca - ADI Srl, Thiene

23) orrelation between diamond tools functional behaviour and their metal bonds characteristic parameters
by M. Franco1, E. Carlet1, D. Zandonella Necca1, A. Zambello2, F. Bonollo2
1 ADI Srl, Thiene
2 UniversitÓ di Padova

24) Optimization of complex tool systems by means of multivariable functions, statistics and division of the entire process into homogenous sub components
by S. Sorrentino1, M. Scalari2, E. Trivellin3, E. Pigozzo3, T. Giorgessi3, M. Vason3, D. Zandonella Necca4
1 Surfaces Technological Abrasives Spa
2 Luna Abrasivi S.r.l.
3 Vincent S.r.l.
4 ADI S.r.l.

25) The "Controlled Destruction" with diamond tools applied to modifications and recycling of major steel structures
by V. Parizzi - Consulente per il Taglio e il Carotaggio - NADECO Associazione Nazionale Demolizione ed Economia Circolare per le Costruzioni

26) New triple-layer polycrystalline diamond compact
by M. Mashhadikarimi1, R.B.D. Medeiros1, L.P.P. Barreto2, D.P. Gurgel1, U.U. Gomes1, M. Filgueira3
1 Post Graduate Program in Material Science and Engineering, University of Rio Grande do Norte, Natal, Brasil
2 Post Graduate Program in Chemical Engineering, Federal University of Rio Grande do Norte, Natal, Brasil
3 Science and Technology Center, State University of Norte Fluminense, Campos dos Goytacazes, Brasil

27) Traditional and innovative powder solutions for the diamond tools industry
by Matteo Zanon, Darek Kossakowski, Bernhard Mais - Kymera International/Ecka Granules Germany, Velden, Germania

28) A pin-on-disc study on the wear behavior of PCD-Nb composites dry sliding against ferrous or non-ferrous materials
by D.P. Gurge1, R.B. Dantas de Medeirosa1, L.P. de Paiva Barreto2, R. da Silva Guimaraes3, M. Filgueira3, L. Bichler4, M. Mashhadikarimia1, U.U. Gomes1
1 Post Graduate Program in Material Science and Engineering, University of Rio Grande do Norte, Natal, Brasil
2 Post Graduate Program in Chemical Engineering, Federal University of Rio Grande do Norte, Natal, Brasil
3 Science and Technology Center, State University of Norte Fluminense, Campos dos Goytacazes, Brasil
4 School of Engineering, University of British Columbia, Kelowna, Canada




Stone

64) Successful new start for Stone+tec: the natural stone industry is back in Nuremberg

66) Xiamen Stone Fair 2022, new trends of the stone industry




Mechanics

68) Inspecting ultra-hard materials and processes using Acoustic Micro Imaging (AMI)
by Jack H. Richtsmeier - Nordson SONOSCAN, Elk Grove Village, Illinois, USA

Abstract: Acoustic Micro Imaging (AMI) is a nondestructive inspection technique that utilizes high frequency ultrasound to examine and characterize a wide variety of high-tech materials and processes. The technique can be used to 1) measure empirical material properties such as velocity, layer thickness, porosity and attenuation as well as, 2) detect a wide variety of defects and/or failures within materials such as cracks, voids, dis-bonds and/or delamination's. With source frequencies ranging from 5 to 300 MHz, the technology has the capability to image features as small as 3 to 5 microns in size. Applications range from inspecting ultra-hard materials to ceramics, composites, metals and plastics as well as epoxies, adhesives, solders and pastes. This paper will review the basic theory and principles behind the technology of AMI and cover specific applications within hard materials including the inspection and characterization of synthetic diamond or poly-crystalline diamond (PCD), bond evaluation of PCD to tungsten carbide (WC) cutters and flaw detection in related bonding, cutting and polishing processes.