Results 31 to 40 of about 35,016 (242)

Tratamentos termoquímicos sequenciais por plasma do aço AISI 1005 [PDF]

, 2015
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Ciência e Engenharia de Materiais, Florianópolis, 2015.Este trabalho apresenta uma nova abordagem sobre o emprego sequencial dos tratamentos
Damin, Keli Vanessa Salvador
core  

Characterization chip formation of commercial steel materials at low speed cylindrical grinding processes

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, Nugroho Sri, Rusnaldy   +2 more
doaj   +1 more source

Sustainable Electrochemical Synthesis of High‐Quality MXenes: Mechanistic Insights, Applications, Challenges, and Technological Prospects

Advanced Functional Materials, EarlyView.
Electrochemical etching provides an eco‐friendly alternative to hazardous HF methods for MXene production. This approach facilitates the selective isolation of the A‐layer from MAX phases with tunable surface terminations. Controlling voltage, electrolytes, temperature, and duration enables the optimal structural integrity. Nevertheless, existing scale
Jagdeep Singh, Madhusudhana M Devadiga, Santosh K. Tiwari, AS Dhaliwal, Gurpreet Singh Selopal   +4 more
wiley   +1 more source

Analysis of microstructural changes during pulsed CO2 laser surface processing of AISI 316L stainless steel [PDF]

, 2009
In the present contribution, a 1.5kW CO2 laser in pulsed wave mode was used to study the effects of laser processing parameters at specific energy fluence.
Chikarakara, Evans, Brabazon, Dermot, Naher, Sumsun   +2 more
core  

Influence of Carbon Nanoparticles on Electrically Induced Wear of Grease‐Lubricated Steels

Advanced Materials Interfaces, EarlyView.
When an electric current enters a pair of rubbing surfaces, enormous damage takes place. In this research, how such damage occurs in the presence of protective grease and the mitigation with added carbon nanoparticles, were investigated. It was discovered that those particles regulate transport and interfacial electrical stability of the grease ...
Mohammad Humaun Kabir, Darrius Dias, Jacob Bons, MD Wasek Foysal, Evan Johnson, Joe Kosmoski, Hong Liang   +6 more
wiley   +1 more source

Tratamentos de superfície e resistência à corrosão por pites dos aços-ferramenta AISI H12 e H13 [PDF]

, 2012
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas, Programa de Pós-Graduação em Química, Florianópolis, 2011A resistência à corrosão por pites dos aços-ferramenta AISI H12 revestido com carbeto de ...
Souza, Fernando Sílvio de
core  

On the Friction and Wear Mechanisms of Electrified Steel Contacts in CO2: Unveiling the Role of Carbon‐Rich Tribofilms Under Dry Sliding Conditions

Advanced Materials Interfaces, EarlyView.
This study investigates friction and wear of AISI 52100 steel under dry sliding in CO2, air, and N2 atmospheres, with and without contact electrification. CO2 forms a stable carbon‐rich tribofilm that reduces friction by ∼30% and wear by ∼85%. High‐resolution TEM, EELS, and molecular dynamics reveal pressure‐dependent lubrication mechanisms, showing ...
Julio A. Cao‐Romero‐Gallegos, Seungjoo Lee, Cagatay Yelkarasi, Leonardo I. Farfan‐Cabrera, Ryuichi Okamoto, Hitoshi Washizu, Ali Erdemir   +6 more
wiley   +1 more source

Indices of systemic inflammation for predicting early infections after major joint arthroplasty

Travmatologiâ i Ortopediâ Rossii
Background. Infectious complications after arthroplasty pose a serious problem for both the patient and the health facility. Therefore, their prognosis is of great clinical importance.
Lyudmila V. Lyubimova, Evgeniya A. Mikishanina, Nikolay S. Nikolaev, Evgeniy A. Lyubimov, Elena V. Preobrazhenskaya   +4 more
doaj   +1 more source

Comparative study of high temperature oxidation behaviour in AISI 304 and AISI 439 stainless steels

Materials Research, 2003
This work deals with a comparison of high temperature oxidation behaviour in AISI 304 austenitic and AISI 439 ferritic stainless steels. The oxidation experiments were performed between 850 and 950 °C, in oxygen and Ar (100 vpm H2). In most cases, it
Antônio Claret Soares Sabioni, Anne-Marie Huntz, Elizete Conceição da Luz, Marc Mantel, Christian Haut   +4 more
doaj   +1 more source

Association of systemic immune-inflammation index (SII) and aggregate index of systemic inflammation (AISI) with thyroid nodules in patients with type 2 diabetes mellitus: a retrospective study

BMC Endocrine Disorders, 2023
Objective This retrospective study aimed to investigate the association between TNs and the systemic immune-inflammation index (SII) and the aggregate index of systemic inflammation (AISI) in patients with T2DM.
Can Cao, Chunyao Li, Xiaoting Li, Weiwei Sun, Yaoxian Wang   +4 more
doaj   +1 more source