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In Honor of Nobel Laureate Dr. Avram Hershko
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SIPS 2024 takes place from October 20 - 24, 2024 at the Out of the Blue Resort in Crete, Greece

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More than 500 abstracts submitted from over 50 countries


Featuring many Nobel Laureates and other Distinguished Guests

ADVANCED PROGRAM

Orals | Summit Plenaries | Round Tables | Posters | Authors Index


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Oral Presentations


8:00 SUMMIT PLENARY - Marika A Ballroom
12:00 LUNCH/POSTERS/EXHIBITION - Red Pepper

SESSION:
IronTuePM1-R9
Leite International Symposium (10th Intl. Symp. on Advanced Sustainable Iron & Steel Making)
Tue. 22 Oct. 2024 / Room: Ariadni C
Session Chairs: Dimas Coura; Gabriela Araujo Gois; Student Monitors: TBA

14:00: [IronTuePM104] OS
STUDY OF MICROHARDNESS, CORROSION RESISTANCE AND WEAR PROPERTIES OF SINTERED Ni-Ti ALLOYS
Gabriela Araujo Gois1; Paulo Assis1; Orimar Reis2
1Federal University of Ouro Preto, Ouro Preto, Brazil; 2Instituto Federal de Minas Gerais, Ouro Preto, Brazil
Paper ID: 265 [Abstract]

The Ni-Ti alloy exhibits exceptional properties that enhance its compatibility with the human body, notably its low density, mechanical strength, corrosion and wear resistance, shape memory effect, and superelasticity. The shape memory effect involves a thermal hysteresis due to phase transitions from martensite to austenite when the alloy is cooled and then heated above its transformation threshold, enabling it to revert to its original shape. The superelasticity effect allows the material to return to its original shape after deformation of up to 10% under applied load. In this study, three samples containing 49.5% Ti and 50.5% Ni were produced using the powder metallurgy technique. The chemical composition of these samples was analyzed. The Ni and Ti metal powder mixture was sintered in a controlled atmosphere furnace at 1118°C in the presence of an inert atmosphere with analytical argon 2.0. Following analysis under an optical microscope and scanning electron microscope (SEM), Vickers microhardness, corrosion, and wear tests were conducted to evaluate the alloy's suitability for prosthetics and orthopedic implants.

References:
[1] ANDRADE, Maria Lúcia Amarante de; CUNHA, Luiz Maurício da Silva; GANDRA, Guilherme Tavares; RIBEIRO, Caio César. Níquel: novos parâmetros de desenvolvimento. Banco Nacional de Desenvolvimento Econômico e Social (BNDES): Rio de Janeiro, maio de 2000.
[2] DEE, Kay C.; PULEO, David A.; BIZIOS, Rena. 2002. An Introduction to Tissue-Biomaterial Interactions: Tissue-Biomaterial. Hoboken, John Wiley & Sons, Inc., 248 p.
[3] BRAGA, Neila de Almeida Braga; FERREIRA, Neidenêi Gomes; CAIRO, Carlos Alberto Alves. Obtenção de titânio metálico com porosidade controlada por metalurgia do pó. Química Nova, v. 30, n. 2, p 450-457, 2007.
[4] GEROLDO, Augusto Césa de Brito. Estudo do efeito de memória de forma de fios ortodônticos da liga NiTi nas condições comercial e após tratamentos térmicos. 2009. Dissetação de Mestrado em Engenharia e Tecnologia de Materiais. Pontifícia Universidade Católica do Rio Grande do Sul. Porto alegre, 2009. 90p.


14:20 POSTERS/EXHIBITION - Ballroom Foyer