Results 11 to 20 of about 10,816 (218)
Heat Treatment of Sintered Valve Seat Inserts [PDF]
Materials Research, 2018 The characterization of sintered valve seat inserts (VSIs) after being subjected to different heat treatment operations has been carried out. The VSIs were obtained from three different alloys by mixing iron powder with AISI M3:2, AISI M2 high-speed ...
Maurilio Pereira Gomes +7 more
doaj +1 more source
Proceedings of the Sustainable Concrete Materials and Structures in Construction 2020 [PDF]
, 2020 Seminar on Sustainable Concrete Materials and Structures in Concrete Construction 2020 was held virtually for the first time on 24 August 2020. This event was organized by the Faculty of Civil Engineering and Built Environment (FKAAB), Universiti Tun ...
Mohd Zuki, Sharifah Salwa +3 more
core +1 more source
Development of a fretting-fatigue mapping concept: The effect of material properties and surface treatments [PDF]
, 2009 Fretting-fatigue induced by combined localized cyclic contact motion and external bulk fatigue loadings may result in premature and dramatic failure of the contacting components.
Araújo +32 more
core +1 more source
Pack Siliconizing Optimization of AISI D2 Tool Steel
Silicon, 2022 AbstractThe paper describes the pack siliconizing optimization procedure for AISI D2 tool steel. Pack siliconizing was performed by employing different treating temperatures (falling in the range 650–950 °C) and times (falling in the range 2–4 h). The siliconizing atmosphere was obtained through silicon (at 12 wt.%) with the addition of different ...
Mojtaba Najafizadeh +4 more
openaire +2 more sources
Se Nanopowder Conversion into Lubricious 2D Selenide Layers by Tribochemical Reactions
Advanced Materials, Volume 35, Issue 42, October 19, 2023., 2023 A simple sprinkling of Se nanopowders onto sliding Mo and W thin films leads to the tribochemical in operando formation of lubricious 2D selenides. Due to the thermal and vacuum stability of the Se nanopowders they can be used to replenish sliding components with solid lubricants, avoiding the long‐lasting problem of transition metal ...
Philipp G. Grützmacher +11 more
wiley +1 more source
Advanced Solid Lubrication with COK-47: Mechanistic Insights on the Role of Water and Performance Evaluation. [PDF]
Adv Sci (Weinh)This study is the first to report the solid lubrication performance of the newly discovered Ti‐based MOF (COK‐47) powder. COK‐47 exhibits a remarkably lowest and most stable coefficient of friction compared to typical solid lubricants. The lubrication mechanism involves water molecules from the air participating in tribochemical reactions, forming an ...
Li H +12 more
europepmc +2 more sources
Non-renormalization Theorems without Supersymmetry [PDF]
, 2015 We derive a new class of one-loop non-renormalization theorems that strongly constrain the running of higher dimension operators in a general four-dimensional quantum field theory.
Cheung, Clifford, Shen, Chia-Hsien
core +3 more sources
Metals, 2017 Cryogenic treatments are usually carried out immediately after quenching, but their use can be extended to post tempering in order to improve their fracture toughness.
Ramona Sola +3 more
doaj +1 more source
MATEC Web of Conferences, 2018 Cylindrical grinding is the process of metal removal using multiple cutting point. The objective of the study is to investigate the chip characteristics (shape and width) and surface roughness materials. The materials are AISI 1020, AISI 1045, AISI 1090,
Isti Nugroho Wahyu +2 more
doaj +1 more source
Vpliv podhlajevanja na lomno žilavost martenzitnega nerjavečega jekla AISI 420 [PDF]
, 2017 Cryogenic treatments have been employed over the last three decades in both tool and high-alloy steels to improve wear resistance, mainly through the transformation of retained austenite and the precipitation of fine carbides.
Perez Ipiña, Juan Elias +2 more
core +1 more source