May/June_AMP_Digital

4 Editorial 6 Feedback 7 Machine Learning 8 Metals/Polymers/Ceramics 10 Testing/Characterization 12 Emerging Technology 13 Process Technology 14 Nanotechnology 79 Editorial Preview 79 Special Advertising S ection 79 Advertisers Index 80 3D PrintShop TRENDS INDUSTRY NEWS DEPARTMENTS Check out the Digital Edition online at asminternational.org/news/magazines/am-p ASM International serves materials professionals, nontechnical personnel, and managers wordwide by providing high-quality materials information, education and training, networking opportunities, and professional development resources in cost-effective and user-friendly formats. ASM is where materials users, producers, and manufacturers converge to do business. AdvancedMaterials & Processes (ISSN 0882-7958, USPS 762080) publishes eight issues per year: January, February/ March, April, May/June, July/August, September, October, andNovember/December, by ASM International, 9639 Kinsman Road, Materials Park, OH 44073-0002; tel: 440.338.5151; fax: 440.338.4634. Periodicals postage paidat Novelty, Ohio, and additional mailing offices. Vol. 178, No. 4, MAY/JUNE 2020. Copyright © 2020 by ASM International ® . All rights reserved. Distributed at no charge to ASMmembers in the United States, Canada, andMexico. International members can pay a $30 per year surcharge to receive printed issues. Subscriptions: $475. Single copies: $51. POSTMASTER: Send3579 forms to ASM International, Materials Park, OH 44073-0002. Change of address: Request for change should include old address of the subscriber. Missing numbers due to “change of address” cannot be replaced. Claims for nondelivery must be made within 60 days of issue. Canada Post Publications Mail Agreement No. 40732105. Return undeliverable Canadian addresses to: 700 Dowd Ave., Elizabeth, NJ 07201. Printedby Publishers Press Inc., Shepherdsville, Ky. 21 CAN COPPER HELP FIGHT COVID-19? Harold T. Michels and Corinne A. Michels Experts on copper and microbiology recommend the expanded use of copper alloys in public spaces to reduce the spread of COVID-19 and minimize future pandemics. 27 IMPROVED MATRIX MATERIAL FOR DIAMOND CUTTER BITS Jonathan W. Bitler and Samuel Lomasney An investigation into the chemistry and type of tungsten carbide powder used for drill bits has yielded a material with improved transverse rupture strength and interesting microstructural response to thermal cycling. 32 TECHNICAL SPOTLIGHT HARDNESS TESTING RETROSPECTIVE: A CENTURY OF WILSON From its earliest beginnings to today, development of hardness testing has evolved in a parallel manner to the engineering accomplishments of the times. 37 ASM REFERENCE PUBLICATIONS & DIGITAL DATABASES CATALOG Our vast, authoritative reference library offers the most comprehensive and up-to-date information. FEATURES MAY/JUNE 2020 | VOL 178 | NO 4 A D V A N C E D M A T E R I A L S & P R O C E S S E S | M A Y / J U N E 2 0 2 0 3 21 55 32 27 55 HTPro The official newsletter of the ASM Heat Treating Society (HTS). This quarterly supplement focuses on heat treating technology, processes, materials, and equipment, along with HTS news and initiatives.