EFEITO DO TRATAMENTO DE IMPLANTAÇÃO IÔNICA POR IMERSÃO EM PLASMA NA RESISTÊNCIA AO DESGASTE DA LIGA Ti-6Al-4V*
EFECT OF PLASMA IMMERSION ION IMPLANTATION TREATEMENT IN THE WEAR RESISTANCE OF Ti-6Al-4V ALLOY
Zepka, Susana; Silva, Maria Margareth da; Reis, Danieli Aparecida P.; Ueda, Mário; Reis, Adriano Gonçalves dos
http://dx.doi.org/10.4322/2176-1523.0674
Tecnol. Metal. Mater. Min., vol.12, n2, p.97-101, 2015
Resumo
O objetivo deste trabalho foi a avaliação da resistência ao desgaste da liga Ti-6Al-4V após processo de Implantação Iônica por Imersão em Plasma (IIIP) em diferentes tempos de imersão. A finalidade deste processo foi a modificação das propriedades superficiais da liga Ti-6Al-4V, com intuito de se obter melhorias nas suas propriedades tribológicas. Nesse processo, átomos podem ser injetados na superfície dos materiais, modificando suas propriedades mecânicas na região próxima à superfície independentemente de variáveis termodinâmicas, tais como solubilidade e difusividade. Foram analisadas amostras submetidas a tempos de imersão de 120 e 180 minutos, a temperaturas de 250°C em 3 amostras para cada condição estudada. A análise de desgaste foi realizada pelo processo pin-on-disk, onde foram comparados os volumes perdidos e os coeficentes de desgaste das amostras. A amostra imersa por 180 minutos teve um coeficiente de desgaste com relação à amostra sem tratamento de 35,12% menor, e em relação a amostra de 120 minutos foi de 11,09% menor. Pode-se observar que a amostra com maior tempo de imersão apresentou menor coeficiente de desgaste.
Palavras-chave
Fluência, Ti-6Al-4V, IIIP, Desgaste.
Abstract
The objective of this work was the evaluation of wear resistance of Ti-6Al-4V alloy after plasma immersion ion implantation (PIII) in different immersion times. The goal of this process was the modification of surface properties of the alloy to obtain better tribology properties. In this process, atoms can be injected on the material´s surface changing the mechanical properties in the region near the surface independently of thermodynamics variables, as solubility and difusivity. The samples were submitted to 120 e 180 minutes of implantation at 250°C in the three samples for each condition. The wear analyses were made by pin-on-disk process, where the lost volumes and wear coefficients were compared in the samples. It was observed the decreasing of attrite coefficient and the lost volume of the material during wear test. The implanted sample by 180 minutes has showed the wear coefficient 35.12% lower in comparison of the sample without treatment, and 11.09% lower in comparison of implanted sample by 120 minutes. It can be observed that the sample implanted by 180 minutes showed lower wear coefficient.
Keywords
Creep, Ti-6Al-4V, PIII, Wear.
Referências
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2 Lee WS, Lin CF. High–temperature deformation behavior of Ti-6Al-4V alloy evaluated by strain-rate compression tests. Journal of Materials Processing Technology. 1998;75(1-3):127-136. http://dx.doi.org/10.1016/S09240136(97)00302-6.
3 Welsch G, Kahveci AI. Oxidation of high temperature: intermetallics. Warrendale: TMS; 1988.
4 Silva MM, Ueda M, Pichon L, Reuther H, Lepienski CM. Surface modification of Ti-6Al-4V alloy by PIII at high temperatures: Effects of plasma potential. Nuclear Instruments & Methods in Physics Research. Section B, Beam Interactions with Materials and Atoms. 2007;257(1-2):722-726. http://dx.doi.org/10.1016/j.nimb.2007.01.135.
5 Ueda M, Silva MM, Lepienski CM, Soares PC Jr, Gonçalves JAN, Reuther H. High Temperature Plasma Immersion Ion Implantation of Ti6Al4V. Surface and Coatings Technology. 2007;201(9-11):4953-4956. http://dx.doi.org/10.1016/j.surfcoat.2006.07.074.
6 Mello CB, Ueda M, Silva MM, Reuther H, Pichon L, Lepienski CM. Tribological effects of plasma immersion ion implantation heating treatments on Ti-6Al-4V alloy. Wear. 2009;267(5-8):867-873. http://dx.doi.org/10.1016/j.wear.2008.12.103.
7 Reis DAP. Efeito do recobrimento cerâmico e da atmosfera de ensaio na fluência de liga refratária [tese de doutorado]. São José dos Campos: Instituto Nacional de Pesquisas Espaciais; 2004.
8 Silva MM. Modificação de propriedades superficiais da liga Ti-6Al-4V por processos assistidos a plasma, em baixas e altas temperaturas [tese de doutorado]. São José dos Campos: Instituto Tecnológico da Aeronáutica; 2007.
9 Savonov GS. Implantação Iônica por Imersão em Plasma em materiais metálicos leves [tese de doutorado]. São José dos Campos: Instituto Nacional de Pesquisas Espaciais; 2010.
10 Fouquet V, Pichon L, Straboni A, Drouet M. Nitridation of Ti6Al4V by PBII: study of the nitrogen diffusion and of the nitride growth mechanism. Surface and Coatings Technology. 2002;186(1-2):34-39. http://dx.doi.org/10.1016/j.surfcoat.2004.04.006.
11 Fouquet V, Pichon L, Drouet M, Straboni A. Plasma assisted nitridation of Ti-6Al-4V. Applied Surface Science. 2004;221(1-4):248-258. http://dx.doi.org/10.1016/S0169-4332(03)00889-4.
12 American Society for Testing and Materials – AS|TM. ASTM G99-95a: standart test method for wear testing with a pin-on-disk apparatus. West Conshohocken; 2000.
13 Zepka S, Reis DAP, Silva MM, Ueda M, Lepienski CM, Neto CM. Study of Creep and Nanoindentation of Ti-6al-4v Alloy after Plasma Immersion Ion Implantation (PIII). In: Sociedade Portuguesa de Materiais. Proceedings of Materiais 2013 Congress – International; 2013, March 25-27; Coimbra, Portugal. Coimbra: SPM; 2013.
14 Ueda M, Silva MM, Otani C, Reuther H, Yatsuzuka M, Lepienski CM, et al. Improvement of tribological properties of Ti6Al4V by nitrogen plasma immersion ion implantation. Surface and Coatings Technology. 2003;169-170:408410. http://dx.doi.org/10.1016/S0257-8972(03)00137-3.
15 Silva LIG, Ueda M, Silva MM, Coaro EN. Results from Experiments on Hybrid Plasma Immersion Ion Implantation/Nitriding Processing of Materials. IEEE Transactions on Plasma Science. 2004;221:34-39.
16 Silva MM, Ueda M, Otani C, Reuther H, Lepienski CM, Soares PC Jr, et al. Hybrid Processing of Ti-6Al-4V Using Plasma Immersion Ion Implantation Combined with Plasma Nitriding. Materials Research. 2006;9(1):97-100. http://dx.doi.org/10.1590/S1516-14392006000100018.
17 Rabinowicz E. Friccion and wear of materials. Massachusetts: John Wiley; 1964.
18 Silva MM, Pichon L, Otubo J. Wear properties studies of NiTi shape memory alloy after nitrogen plasma based treatments. In: Associação Brasileira de Engenharia e Ciências Mecânicas. Proceedings of 21st International Congress of Mechanical Engineering – COBEM; 2011 October 24-28; Natal, Brazil. São Paulo: ABCM; 2011.
19 Raveh A. Mechanisms of r. f. plasma nitriding of Ti-6Al-4V alloy. Materials Science and Engineering A. 1993;167(1‑2):155-164. http://dx.doi.org/10.1016/0921-5093(93)90349-J.
2 Lee WS, Lin CF. High–temperature deformation behavior of Ti-6Al-4V alloy evaluated by strain-rate compression tests. Journal of Materials Processing Technology. 1998;75(1-3):127-136. http://dx.doi.org/10.1016/S09240136(97)00302-6.
3 Welsch G, Kahveci AI. Oxidation of high temperature: intermetallics. Warrendale: TMS; 1988.
4 Silva MM, Ueda M, Pichon L, Reuther H, Lepienski CM. Surface modification of Ti-6Al-4V alloy by PIII at high temperatures: Effects of plasma potential. Nuclear Instruments & Methods in Physics Research. Section B, Beam Interactions with Materials and Atoms. 2007;257(1-2):722-726. http://dx.doi.org/10.1016/j.nimb.2007.01.135.
5 Ueda M, Silva MM, Lepienski CM, Soares PC Jr, Gonçalves JAN, Reuther H. High Temperature Plasma Immersion Ion Implantation of Ti6Al4V. Surface and Coatings Technology. 2007;201(9-11):4953-4956. http://dx.doi.org/10.1016/j.surfcoat.2006.07.074.
6 Mello CB, Ueda M, Silva MM, Reuther H, Pichon L, Lepienski CM. Tribological effects of plasma immersion ion implantation heating treatments on Ti-6Al-4V alloy. Wear. 2009;267(5-8):867-873. http://dx.doi.org/10.1016/j.wear.2008.12.103.
7 Reis DAP. Efeito do recobrimento cerâmico e da atmosfera de ensaio na fluência de liga refratária [tese de doutorado]. São José dos Campos: Instituto Nacional de Pesquisas Espaciais; 2004.
8 Silva MM. Modificação de propriedades superficiais da liga Ti-6Al-4V por processos assistidos a plasma, em baixas e altas temperaturas [tese de doutorado]. São José dos Campos: Instituto Tecnológico da Aeronáutica; 2007.
9 Savonov GS. Implantação Iônica por Imersão em Plasma em materiais metálicos leves [tese de doutorado]. São José dos Campos: Instituto Nacional de Pesquisas Espaciais; 2010.
10 Fouquet V, Pichon L, Straboni A, Drouet M. Nitridation of Ti6Al4V by PBII: study of the nitrogen diffusion and of the nitride growth mechanism. Surface and Coatings Technology. 2002;186(1-2):34-39. http://dx.doi.org/10.1016/j.surfcoat.2004.04.006.
11 Fouquet V, Pichon L, Drouet M, Straboni A. Plasma assisted nitridation of Ti-6Al-4V. Applied Surface Science. 2004;221(1-4):248-258. http://dx.doi.org/10.1016/S0169-4332(03)00889-4.
12 American Society for Testing and Materials – AS|TM. ASTM G99-95a: standart test method for wear testing with a pin-on-disk apparatus. West Conshohocken; 2000.
13 Zepka S, Reis DAP, Silva MM, Ueda M, Lepienski CM, Neto CM. Study of Creep and Nanoindentation of Ti-6al-4v Alloy after Plasma Immersion Ion Implantation (PIII). In: Sociedade Portuguesa de Materiais. Proceedings of Materiais 2013 Congress – International; 2013, March 25-27; Coimbra, Portugal. Coimbra: SPM; 2013.
14 Ueda M, Silva MM, Otani C, Reuther H, Yatsuzuka M, Lepienski CM, et al. Improvement of tribological properties of Ti6Al4V by nitrogen plasma immersion ion implantation. Surface and Coatings Technology. 2003;169-170:408410. http://dx.doi.org/10.1016/S0257-8972(03)00137-3.
15 Silva LIG, Ueda M, Silva MM, Coaro EN. Results from Experiments on Hybrid Plasma Immersion Ion Implantation/Nitriding Processing of Materials. IEEE Transactions on Plasma Science. 2004;221:34-39.
16 Silva MM, Ueda M, Otani C, Reuther H, Lepienski CM, Soares PC Jr, et al. Hybrid Processing of Ti-6Al-4V Using Plasma Immersion Ion Implantation Combined with Plasma Nitriding. Materials Research. 2006;9(1):97-100. http://dx.doi.org/10.1590/S1516-14392006000100018.
17 Rabinowicz E. Friccion and wear of materials. Massachusetts: John Wiley; 1964.
18 Silva MM, Pichon L, Otubo J. Wear properties studies of NiTi shape memory alloy after nitrogen plasma based treatments. In: Associação Brasileira de Engenharia e Ciências Mecânicas. Proceedings of 21st International Congress of Mechanical Engineering – COBEM; 2011 October 24-28; Natal, Brazil. São Paulo: ABCM; 2011.
19 Raveh A. Mechanisms of r. f. plasma nitriding of Ti-6Al-4V alloy. Materials Science and Engineering A. 1993;167(1‑2):155-164. http://dx.doi.org/10.1016/0921-5093(93)90349-J.
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